/* ================================================
     MAIN.CSS CONSOLIDADO Y OPTIMIZADO - VERSIÓN 3.0
     ================================================ */

  /* ================================================
     1. VARIABLES CSS GLOBALES
     ================================================ */
  :root {
    /* Colores principales */
    --primary-color: #087021;
    --primary-gradient: linear-gradient(135deg, #087021 0%, #065318 100%);
    --success-color: #198754;
    --success-gradient: linear-gradient(45deg, #198754, #20c997);
    --warning-color: #ffc107;
    --warning-gradient: linear-gradient(45deg, #ffc107, #ffeb3b);
    --danger-color: #dc3545;
    --danger-gradient: linear-gradient(45deg, #dc3545, #f1556c);

    /* Fondos y bordes */
    --bg-light: #f8f9fa;
    --bg-gradient: linear-gradient(135deg, rgba(224, 247, 250, 0.3) 0%, rgba(8, 112, 33, 0.05) 50%, rgba(8, 112, 33, 0.2) 70%);
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 15px;

    /* Sombras */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.15);

    /* Transiciones y dimensiones */
    --transition: all 0.3s ease;
    --header-height-desktop: 90px;
    --header-height-mobile: 140px;

    /* Navbar universal */
    --universal-navbar-height: 70px;
    --universal-navbar-height-mobile: 60px;
    --universal-navbar-bg: linear-gradient(135deg, #0a0f1e 0%, #0b2416 50%, #0a1628 100%);
    --g-hero:              linear-gradient(135deg, #0a0f1e 0%, #0b2416 50%, #0a1628 100%);
    --universal-brand-color: #087021;
    --universal-brand-hover: #065d1a;

    /* Colores plata premium */
    --platinum-gradient: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 25%, #cbd5e1 50%, #94a3b8 75%, #64748b 100%);
    --platinum-gradient-hover: linear-gradient(135deg, #ffffff 0%, #f1f5f9 25%, #e2e8f0 50%, #cbd5e1 75%, #94a3b8 100%);
    --platinum-shimmer: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.8) 50%, transparent 70%);
    --platinum-shadow: rgba(100, 116, 139, 0.2);
    --platinum-shadow-hover: rgba(100, 116, 139, 0.3);
    --platinum-glow: rgba(148, 163, 184, 0.4);

    /* ── Paleta de marca (opotrinchera) — sincronizada con main.css ── */
    --brand:              #087021;
    --brand-dark:         #065318;
    --brand-light:        #065d1a;
    --brand-neon:         #22c55e;
    --brand-pale:         #d1fae5;

    --accent:             #f97316;
    --accent-amber:       #fbbf24;
    --accent-pale:        #fef3c7;

    --cyber:              #06b6d4;
    --cyber-dark:         #0891b2;
    --cyber-pale:         #e0f2fe;

    --bg-page:            #f0fdf4;
    --bg-surface:         #ffffff;
    --bg-surface-2:       #f8fafc;
    --text-muted-brand:   #64748b;
    --border-brand:       rgba(8, 112, 33, 0.12);

    --g-brand:            linear-gradient(135deg, #087021 0%, #22c55e 100%);
    --g-brand-dark:       linear-gradient(135deg, #087021 0%, #065318 100%);
    --g-cyber:            linear-gradient(135deg, #06b6d4 0%, #087021 100%);
    --g-accent:           linear-gradient(135deg, #f97316 0%, #fbbf24 100%);
    --g-surface:          linear-gradient(135deg, #f8fafc 0%, #f0f9ff 100%);
    --g-success-brand:    linear-gradient(135deg, #10b981 0%, #059669 100%);

    --shadow-brand-sm:    0 2px 8px rgba(8, 112, 33, 0.08);
    --shadow-brand-md:    0 4px 20px rgba(8, 112, 33, 0.12);
    --shadow-brand-lg:    0 8px 40px rgba(8, 112, 33, 0.18);

    --r-sm:  8px;
    --r-md:  12px;
    --r-lg:  18px;
    --r-xl:  24px;
    --r-pill: 50px;

    --t:      all 0.3s ease;
    --t-fast: all 0.18s ease;

    /* Aliases de compatibilidad para estilos de página interna */
    --sas-green-primary:  #087021;
    --sas-green-dark:     #065d1a;
    --sas-green-light:    #d1fae5;
    --sas-blue-primary:   #007bff;
    --sas-blue-light:     #e3f2fd;
    --sas-white:          #ffffff;
    --sas-gray-100:       #f8f9fa;
    --sas-gray-200:       #e9ecef;
    --sas-gray-300:       #dee2e6;
    --gradient-green:     linear-gradient(135deg, #087021 0%, #20c997 100%);
    --gradient-blue:      linear-gradient(135deg, #087021 0%, #065318 100%);
    --gradient-success:   linear-gradient(135deg, #087021 0%, #22c55e 100%);
    --gradient-warning:   linear-gradient(135deg, #ffc107 0%, #ffeb3b 100%);
    --gradient-light:     linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    --shadow-soft:        0 4px 20px rgba(8, 112, 33, 0.08);
    --shadow-medium:      0 8px 30px rgba(8, 112, 33, 0.12);
    --shadow-strong:      0 12px 40px rgba(8, 112, 33, 0.16);
    --radius-sm:          10px;
    --radius-md:          16px;
    --radius-lg:          20px;
    --transition-smooth:  all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  /* ================================================
     2. BASE RESET Y CONFIGURACIÓN GLOBAL
     ================================================ */
  html { scroll-behavior: smooth; }

  body {
    background: linear-gradient(135deg, #f0fdf4 0%, #f0f9ff 50%, #f8fafc 100%);
    background-color: #f0fdf4;
    background-attachment: fixed;
    min-height: 100vh;
    margin: 0;
    position: relative;
  }

  /* Configuración por defecto del header */
  html { scroll-padding-top: var(--header-height-desktop); }
  body { padding-top: var(--header-height-desktop); }

  /* Zona de protección superior por defecto */
  body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height-desktop);
    background: linear-gradient(135deg, #0a0f1e 0%, #0b2416 50%, #0a1628 100%);
    z-index: 1000;
    pointer-events: none;
  }

  /* ================================================
     3. LAYOUTS ESPECIALES
     ================================================ */

  /* Landing Page Reset */
  body.landing-page,
  body.register-page,
  body.esquema-landing-page {
    padding-top: 0 !important;
  }

  body.landing-page .top-right-buttons,
  body.landing-page::before,
  body.register-page .top-right-buttons,
  body.register-page::before,
  body.esquema-landing-page .top-right-buttons,
  body.esquema-landing-page::before {
    display: none !important;
  }

  /* Login Page Reset */
  body.bg-login {
    background-color: var(--bg-light);
    min-height: 100vh;
    padding-top: 0 !important;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  /* Universal Navbar Pages */
  body.universal-navbar-page {
    padding-top: var(--universal-navbar-height) !important;
  }

  body.universal-navbar-page .top-right-buttons,
  body.universal-navbar-page::before {
    display: none !important;
  }

  body.universal-navbar-page > *:first-child:not(.universal-navbar) {
    margin-top: 0 !important;
  }

  /* Duplicates Page */
  .duplicates-page {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%) !important;
    min-height: 100vh;
  }

  /* ================================================
     5. NAVBAR UNIVERSAL
     ================================================ */
  .universal-navbar {
    background: linear-gradient(135deg, #0a0f1e 0%, #0b2416 50%, #0a1628 100%);
    padding: 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1050;
    height: var(--universal-navbar-height);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
  }

  .universal-nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    position: relative;
  }

  /* Brand */
  .universal-nav-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #ffffff;
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 1.5rem;
    transition: all 0.3s ease;
    gap: 8px;
    flex-shrink: 0;
  }
  .universal-nav-brand:hover { color: rgba(255,255,255,0.85); text-decoration: none; transform: translateY(-1px); }
  .universal-nav-brand i { font-size: 1.8rem; color: #ffffff; }

  /* Links centrados absolutamente */
  .universal-nav-left {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 28px;
  }

  .universal-nav-left a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s ease;
    padding: 8px 0;
    position: relative;
    white-space: nowrap;
  }
  .universal-nav-left a::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 2px;
    background: rgba(255, 255, 255, 0.8);
    transition: width 0.3s ease;
  }
  .universal-nav-left a:hover,
  .universal-nav-left a.active { color: #ffffff; text-decoration: none; }
  .universal-nav-left a:hover::after,
  .universal-nav-left a.active::after { width: 100%; }

  /* Botones — derecha */
  .universal-nav-right {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
  }

  /* Botones */
  .universal-btn {
    padding: 7px 16px;
    border-radius: 7px;
    text-decoration: none;
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 13px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    white-space: nowrap;
    letter-spacing: 0.3px;
  }
  .universal-btn i { font-size: 1rem; }

  .universal-btn-outline {
    border: 1.5px solid rgba(255, 255, 255, 0.7);
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
  }
  .universal-btn-outline:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: #ffffff;
    color: #ffffff;
    text-decoration: none;
    transform: translateY(-1px);
  }

  .universal-btn-primary {
    background: rgba(255, 255, 255, 0.2);
    color: #ffffff;
    border: 1.5px solid rgba(255, 255, 255, 0.5);
  }
  .universal-btn-primary:hover {
    background: rgba(255, 255, 255, 0.35);
    color: #ffffff;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  }

  .universal-btn-danger {
    background: rgba(239, 68, 68, 0.85);
    color: white;
    border: 1.5px solid rgba(239, 68, 68, 0.6);
  }
  .universal-btn-danger:hover {
    background: #dc2626;
    border-color: #dc2626;
    color: white;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.4);
  }

  .universal-navbar.scrolled { box-shadow: 0 6px 25px rgba(0, 0, 0, 0.25); }

  /* Texto de botón — oculto en móvil pequeño con .btn-label */
  .btn-label { display: inline; }

  /* ================================================
     6. LANDING PAGE NAVBARS
     ================================================ */
  .landing-navbar {
    background: #fff;
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
  }

  .landing-nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .landing-nav-left {
    display: flex;
    align-items: center;
  }

  .landing-nav-left a {
    text-decoration: none;
    color: #333;
    margin-right: 30px;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
  }

  .landing-nav-left a:hover { color: var(--universal-brand-color); }

  .landing-nav-right {
    display: flex;
    gap: 15px;
  }

  .landing-btn {
    padding: 8px 20px;
    border: none;
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
  }

  .landing-btn-outline {
    border: 2px solid var(--universal-brand-color);
    color: var(--universal-brand-color);
    background: transparent;
  }

  .landing-btn-outline:hover {
    background: var(--universal-brand-color);
    color: white;
    text-decoration: none;
  }

  .landing-btn-primary {
    background: var(--universal-brand-color);
    color: white;
    border: 2px solid var(--universal-brand-color);
  }

  .landing-btn-primary:hover {
    background: var(--universal-brand-hover);
    border-color: var(--universal-brand-hover);
    color: white;
    text-decoration: none;
  }

  .landing-btn-white {
    background: white;
    color: var(--universal-brand-color);
    border: 2px solid white;
    font-weight: 700;
  }

  .landing-btn-white:hover {
    background: #f8f9fa;
    border-color: #f8f9fa;
    color: var(--universal-brand-hover);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  }

  .landing-btn-large {
    padding: 15px 40px;
    font-size: 1.1rem;
    border-radius: var(--border-radius-md);
  }

  /* ================================================
     7. LANDING PAGE SECCIONES
     ================================================ */
  .landing-hero {
    background: linear-gradient(60deg, rgba(224, 247, 250, 0.9) 0%, rgba(8, 112, 33, 0.9) 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
  }

  .landing-hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  .landing-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    font-weight: 700;
  }

  .landing-hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
  }

  .landing-stats {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    padding: 15px 30px;
    border-radius: 50px;
    margin: 20px 0;
    backdrop-filter: blur(5px);
  }

  .landing-features {
    padding: 80px 0;
    background: linear-gradient(180deg, #e0f7fa 0%, #f1f8e9 100%);
  }

  .landing-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  .landing-section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 50px;
    color: #333;
  }

  .landing-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
  }

  .landing-feature-card {
    background: white;
    padding: 30px;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
  }

  .landing-feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
  }

  .landing-feature-card h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.5rem;
    font-weight: 700;
  }

  .landing-feature-card p {
    color: #666;
    line-height: 1.6;
  }

  .landing-cta {
    background: linear-gradient(135deg, var(--universal-brand-color) 0%, var(--universal-brand-hover) 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
  }

  .landing-cta h2 {
    font-size: 2rem;
    margin-bottom: 20px;
  }

  .landing-cta p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    opacity: 0.9;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
  }

  .landing-footer {
    background: linear-gradient(135deg, var(--universal-brand-hover) 0%, #043d11 100%);
    color: white;
    padding: 40px 0;
    text-align: center;
  }

  /* ================================================
     8. COMPONENTES UI
     ================================================ */

  /* Títulos */
  .title-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
  }

  .page-title-label {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
    text-align: center;
    margin-top: 0.5rem;
    margin-bottom: 3rem;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  }

  /* Cards */
  .card-custom,
  .card-login {
    border: none;
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius-md);
    transition: var(--transition);
  }

  .card-custom:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }

  .card-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
  }

  /* Botones */
  .btn-gradient-primary {
    background: var(--primary-gradient);
    border: none;
    color: white;
    transition: var(--transition);
  }

  .btn-gradient-primary:hover {
    background: linear-gradient(45deg, #0056b3, #008ecc);
    color: #e0e0e0;
    transform: translateY(-1px);
  }

  .btn-outline-secondary {
    transition: var(--transition);
  }

  .btn-outline-secondary:hover {
    background-color: #6c757d;
    color: white;
    transform: translateY(-1px);
  }

  /* Texto con gradiente */
  .text-gradient-primary {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .text-gradient-success {
    background: var(--success-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  /* Alerts */
  .alert {
    font-size: 1rem;
    box-shadow: var(--shadow-sm);
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    border: none;
  }

  .alert-success {
    background: linear-gradient(135deg, rgba(25, 135, 84, 0.1), rgba(25, 135, 84, 0.05));
    border-left: 4px solid var(--success-color);
  }

  .alert-danger {
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.1), rgba(220, 53, 69, 0.05));
    border-left: 4px solid var(--danger-color);
  }

  .alert-info {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(59, 130, 246, 0.05));
    border-left: 4px solid #3b82f6;
  }

  .alert-warning {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.1), rgba(255, 193, 7, 0.05));
    border-left: 4px solid var(--warning-color);
  }

  /* ================================================
     9. COMPONENTE QUIZ
     ================================================ */
  /* Contenedor principal de pregunta y respuestas con ancho fijo */
  .contenido-quiz {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    overflow: hidden;
  }

  /* Área de pregunta con altura flexible */
  .pregunta-contenedor {
    min-height: 120px;
    max-height: 300px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 2px solid #dee2e6;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
  }

  .pregunta-area {
    height: 100%;
    width: 100%;
    overflow-y: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
  }

  .pregunta-texto {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #2c3e50;
    font-weight: 500;
    word-wrap: break-word;
    hyphens: auto;
    max-width: 100%;
  }

  /* Área de respuestas con altura fija */
  .respuestas-contenedor {
    height: 250px;
    padding: 1.5rem;
    overflow-y: auto;
    background: white;
  }

  /* Contenedor con espacio reservado para el mensaje de feedback */
  .feedback-container {
    min-height: 70px;
    margin: 0 1rem 1rem 1rem;
    transition: var(--transition);
  }

  .feedback-container .alert {
    margin-bottom: 0;
  }

  .feedback-container:empty {
    min-height: 70px;
  }

  /* Estilos para respuesta correcta */
  .respuesta-correcta {
    font-weight: bold !important;
    color: var(--success-color) !important;
    background-color: rgba(40, 167, 69, 0.1) !important;
    border-left: 4px solid var(--success-color) !important;
    padding-left: 12px !important;
  }

  .respuesta-correcta strong {
    color: var(--success-color) !important;
    font-weight: bold !important;
  }

  .list-group-item strong {
    margin-right: 8px;
  }

  .list-group-item {
    border: 1px solid #dee2e6;
    margin-bottom: 2px;
    border-radius: 4px;
    word-wrap: break-word;
    transition: var(--transition);
  }

  .list-group-item:hover {
    background-color: #f8f9fa;
  }

  /* Scrollbar personalizado */
  .pregunta-area::-webkit-scrollbar,
  .respuestas-contenedor::-webkit-scrollbar {
    width: 8px;
  }

  .pregunta-area::-webkit-scrollbar-track,
  .respuestas-contenedor::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
  }

  .pregunta-area::-webkit-scrollbar-thumb,
  .respuestas-contenedor::-webkit-scrollbar-thumb {
    background: #cbd5e0;
    border-radius: 4px;
  }

  .pregunta-area::-webkit-scrollbar-thumb:hover,
  .respuestas-contenedor::-webkit-scrollbar-thumb:hover {
    background: #a0aec0;
  }

  /* Estilos para información adicional */
  .info-adicional {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-top: 1px solid #dee2e6;
    padding: 1.2rem;
    margin-top: 1rem;
    border-radius: 0.5rem;
  }

  .info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
  }

  .info-item {
    background: white;
    padding: 0.8rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  }

  .info-label {
    font-weight: 600;
    color: #495057;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.3rem;
    display: block;
  }

  .info-value {
    color: #212529;
    font-size: 0.9rem;
    line-height: 1.4;
    word-wrap: break-word;
  }

  .explicacion-item {
    grid-column: 1 / -1;
    border-left-color: var(--success-color);
  }

  .explicacion-texto {
    background-color: rgba(40, 167, 69, 0.05);
    padding: 0.8rem;
    border-radius: 6px;
    border: 1px solid rgba(40, 167, 69, 0.2);
    font-style: italic;
    margin-top: 0.5rem;
    word-wrap: break-word;
    hyphens: auto;
  }

  .temas-lista {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.5rem;
  }

  .tema-badge {
    background: var(--primary-gradient);
    color: white;
    padding: 0.3rem 0.6rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 500;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
  }

  .ia-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
  }

  .ia-badge.creada-ia {
    background: linear-gradient(45deg, #17a2b8, #138496);
    color: white;
  }

  .ia-badge.no-ia {
    background: linear-gradient(45deg, #6c757d, #545b62);
    color: white;
  }

  .revision-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
  }

  .revision-badge.revisada {
    background: var(--success-gradient);
    color: white;
  }

  .revision-badge.no-revisada {
    background: var(--warning-gradient);
    color: #212529;
  }

  .probabilidad-item {
    border-left-color: var(--warning-color);
  }

  .probabilidad-valor {
    font-size: 1.1rem;
    font-weight: bold;
    color: #e0a800;
  }

  .probabilidad-texto {
    background-color: rgba(255, 193, 7, 0.1);
    padding: 0.6rem;
    border-radius: 6px;
    border: 1px solid rgba(255, 193, 7, 0.3);
    margin-top: 0.5rem;
    font-size: 0.85rem;
    word-wrap: break-word;
  }

  .fechas-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
  }

  .fecha-item {
    background: rgba(108, 117, 125, 0.05);
    padding: 0.6rem;
    border-radius: 6px;
    border: 1px solid rgba(108, 117, 125, 0.2);
  }

  .fecha-label {
    font-size: 0.75rem;
    color: #6c757d;
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 0.2rem;
  }

  .fecha-valor {
    font-size: 0.85rem;
    color: #495057;
    font-weight: 500;
  }

  .text-blue {
    color: var(--primary-color) !important;
  }

  .text-blue .bi {
    margin-right: 4px;
  }

  /* Contenedor de mensajes del sistema */
  .messages-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    max-width: 400px;
  }

  .alert-dismissible .btn-close {
    padding: 0.75rem 0.75rem;
  }

  /* ================================================
     10. HERRAMIENTAS CARD PLATINUM
     ================================================ */
  .card-herramientas {
    background: var(--platinum-gradient);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    box-shadow: 0 8px 25px var(--platinum-shadow),
                inset 0 1px 0 rgba(255, 255, 255, 0.6),
                inset 0 -1px 0 rgba(100, 116, 139, 0.15);
  }

  /* Borde y efectos animados */
  .card-herramientas::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg,
      #f8fafc, #e2e8f0, #cbd5e1, #94a3b8,
      #64748b, #94a3b8, #cbd5e1, #e2e8f0, #f8fafc);
    background-size: 300% 300%;
    border-radius: inherit;
    z-index: -1;
    animation: platinum-border-flow 3s ease-in-out infinite;
    opacity: 0.7;
  }

  .card-herramientas::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--platinum-shimmer);
    z-index: 1;
    transition: left 0.6s ease;
    pointer-events: none;
  }

  .card-herramientas:hover {
    transform: translateY(-5px) rotateX(3deg);
    box-shadow: 0 12px 35px var(--platinum-shadow-hover),
                inset 0 2px 0 rgba(255, 255, 255, 0.8),
                inset 0 -2px 0 rgba(100, 116, 139, 0.25);
    background: var(--platinum-gradient-hover);
  }

  .card-herramientas:hover::before {
    opacity: 1;
    animation-duration: 2s;
  }

  .card-herramientas:hover::after {
    left: 100%;
  }

  /* Elementos platinum */
  .card-herramientas .icon-herramientas {
    font-size: 3.5rem !important;
    background: linear-gradient(145deg, #374151, #4b5563, #6b7280, #9ca3af);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 3px 6px rgba(31, 41, 55, 0.3));
    animation: platinum-pulse 2.5s ease-in-out infinite;
    position: relative;
    z-index: 2;
  }

  .card-herramientas .title-herramientas {
    background: linear-gradient(145deg, #1f2937, #374151, #4b5563, #64748b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700 !important;
    position: relative;
    z-index: 2;
    letter-spacing: 0.3px;
  }

  .card-herramientas .btn-herramientas {
    background: linear-gradient(145deg, #f8fafc, #e2e8f0, #cbd5e1) !important;
    border: 2px solid rgba(148, 163, 184, 0.3) !important;
    color: #1f2937 !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    letter-spacing: 0.8px !important;
    padding: 0.75rem 1.5rem !important;
    border-radius: 8px !important;
    position: relative !important;
    overflow: hidden !important;
    z-index: 2 !important;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) !important;
    box-shadow: 0 6px 20px var(--platinum-shadow),
                inset 0 1px 0 rgba(255, 255, 255, 0.7),
                inset 0 -1px 0 rgba(100, 116, 139, 0.15) !important;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.6) !important;
  }

  .card-herramientas .btn-herramientas::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
      transparent,
      rgba(255, 255, 255, 0.3),
      rgba(255, 255, 255, 0.6),
      rgba(255, 255, 255, 0.3),
      transparent);
    transition: left 0.5s ease;
    z-index: -1;
  }

  .card-herramientas .btn-herramientas:hover {
    background: linear-gradient(145deg, #ffffff, #f1f5f9, #e2e8f0) !important;
    transform: translateY(-2px) scale(1.02) !important;
    box-shadow: 0 8px 25px var(--platinum-shadow-hover),
                inset 0 2px 0 rgba(255, 255, 255, 0.9),
                inset 0 -2px 0 rgba(100, 116, 139, 0.2),
                0 0 15px var(--platinum-glow) !important;
    border-color: rgba(148, 163, 184, 0.5) !important;
    color: #111827 !important;
  }

  .card-herramientas .btn-herramientas:hover::before {
    left: 100%;
  }

  .card-herramientas .text-muted {
    color: #374151 !important;
    font-weight: 500;
    position: relative;
    z-index: 2;
  }

  .card-herramientas .text-muted.fw-medium {
    color: #1f2937 !important;
    font-weight: 600 !important;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.4);
  }

  /* Animaciones platinum */
  @keyframes platinum-border-flow {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
  }

  @keyframes platinum-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.95; transform: scale(1.02); }
  }

  /* ================================================
     11. FORMULARIOS
     ================================================ */
  .form-login {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
  }

  .cambiar-contraseña-form {
    max-width: 480px;
    margin: 0 auto;
    padding: 2.5rem 2rem;
    background-color: #fff;
    border-radius: var(--border-radius-md);
    box-shadow: 0 8px 20px rgba(0, 123, 255, 0.1), 0 4px 10px rgba(0, 198, 255, 0.15);
    transition: var(--transition);
  }

  .cambiar-contraseña-form:hover {
    box-shadow: 0 12px 30px rgba(0, 123, 255, 0.15), 0 6px 15px rgba(0, 198, 255, 0.2);
  }

  .cambiar-contraseña-form h2 {
    margin-bottom: 20px;
  }

  .cambiar-contraseña-form input.form-control {
    border: 2px solid #00bfff;
    border-radius: var(--border-radius-sm);
    padding: 0.5rem 1rem;
    transition: var(--transition);
  }

  .cambiar-contraseña-form input.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 8px rgba(0, 123, 255, 0.5);
    outline: none;
  }

  /* ================================================
     12. PÁGINAS ESPECÍFICAS
     ================================================ */

  /* Página de registro */
  .register-container {
    width: 100% !important;
    max-width: 900px !important;
    padding: 2rem !important;
    margin: 30px auto 0 auto !important;
  }

  .register-container .page-title-label {
    background: var(--success-gradient) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
    font-size: 3rem !important;
    margin-bottom: 2rem !important;
  }

  .register-container .card-login {
    box-shadow: 0 8px 25px rgba(25, 135, 84, 0.15) !important;
    border-radius: var(--border-radius-lg) !important;
    max-height: none !important;
    overflow-y: visible !important;
  }

  .register-container .card-login .card-header {
    background: var(--success-gradient) !important;
  }

  .register-container .step-item {
    display: flex !important;
    align-items: flex-start !important;
    padding: 1.2rem !important;
    border-radius: var(--border-radius-md) !important;
    background: linear-gradient(135deg, var(--bg-light), #e9ecef) !important;
    border-left: 4px solid var(--success-color) !important;
    margin-bottom: 1rem !important;
    transition: var(--transition) !important;
    box-shadow: var(--shadow-sm) !important;
  }

  .register-container .step-item:hover {
    transform: translateX(5px) !important;
    box-shadow: 0 4px 15px rgba(25, 135, 84, 0.1) !important;
  }

  .register-container .step-number {
    background: var(--success-gradient) !important;
    color: white !important;
    width: 35px !important;
    height: 35px !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-weight: bold !important;
    margin-right: 1rem !important;
    flex-shrink: 0 !important;
    box-shadow: 0 2px 8px rgba(25, 135, 84, 0.3) !important;
  }

  .register-container .btn-success {
    background: var(--success-gradient) !important;
    border: none !important;
    padding: 0.8rem 1.5rem !important;
    font-weight: 600 !important;
    border-radius: 10px !important;
    transition: var(--transition) !important;
    box-shadow: 0 4px 15px rgba(25, 135, 84, 0.3) !important;
  }

  .register-container .btn-success:hover {
    background: linear-gradient(45deg, #157347, #1aa179) !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 20px rgba(25, 135, 84, 0.4) !important;
  }

  /* Página de estadísticas */
  .bg-gradient-success {
    background: var(--success-gradient) !important;
  }

  .table-striped > tbody > tr:nth-of-type(odd) {
    background-color: #e3f2fd;
  }

  .table-primary {
    background-color: var(--primary-color) !important;
  }

  .table-success {
    background-color: var(--success-color) !important;
  }

  .table-info {
    background-color: #0dcaf0 !important;
  }

  .progress {
    background-color: #d1e7dd;
  }

  /* Carga de preguntas */
  .upload-page {
    padding-top: 20px !important;
  }

  .upload-zone {
    border: 3px dashed var(--primary-color);
    border-radius: var(--border-radius-md);
    padding: 3rem;
    text-align: center;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    transition: var(--transition);
    cursor: pointer;
  }

  .upload-zone:hover {
    border-color: #0056b3;
    background: linear-gradient(135deg, #e9ecef, #dee2e6);
  }

  .upload-zone.dragover {
    border-color: var(--success-color);
    background: linear-gradient(135deg, #d1e7dd, #f8f9fa);
  }

  .info-card {
    border-left: 4px solid var(--primary-color);
  }

  .warning-card {
    border-left: 4px solid var(--warning-color);
  }

  .success-card {
    border-left: 4px solid var(--success-color);
  }

  .estructura-json {
    max-height: 300px;
    overflow-y: auto;
    border-radius: var(--border-radius-sm);
  }

  .estructura-json pre {
    margin: 0;
    font-size: 0.85rem;
    line-height: 1.4;
  }

  .pregunta-card {
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
  }

  .pregunta-card.error {
    border-left-color: var(--danger-color);
  }

  .pregunta-card.warning {
    border-left-color: var(--warning-color);
  }

  .pregunta-card.success {
    border-left-color: var(--success-color);
  }

  .respuesta-item {
    background-color: #f8f9fa;
    border-radius: var(--border-radius-sm);
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.25rem;
    transition: var(--transition);
  }

  .respuesta-item:hover {
    background-color: #e9ecef;
  }

  .estadisticas {
    position: sticky;
    top: 110px;
  }

  .badge-custom {
    font-size: 0.8rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius-sm);
  }

  .resultado-card {
    border: none;
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
  }

  .stats-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: bold;
    color: white;
    margin: 0 auto 1rem;
    box-shadow: var(--shadow-md);
  }

  .success-circle {
    background: var(--success-gradient);
  }

  .error-circle {
    background: var(--danger-gradient);
  }

  .info-circle {
    background: linear-gradient(45deg, #0dcaf0, #6edff6);
  }

  /* Animaciones */
  .animation-success {
    animation: bounceIn 1s ease-out;
  }

  @keyframes bounceIn {
    0% {
      transform: scale(0.3);
      opacity: 0;
    }
    50% {
      transform: scale(1.05);
    }
    70% {
      transform: scale(0.9);
    }
    100% {
      transform: scale(1);
      opacity: 1;
    }
  }

  /* Esquemas */
  .esquema-landing-page .hero-section {
    background: var(--primary-gradient);
    color: white;
    position: relative;
    overflow: hidden;
  }

  .esquema-landing-page .hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(255,255,255,0.1), transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(255,255,255,0.1), transparent 50%);
    opacity: 0.6;
  }

  .esquema-landing-page .min-vh-75 {
    min-height: 75vh;
  }

  .esquema-landing-page .hero-content {
    position: relative;
    z-index: 2;
  }

  .esquema-landing-page .hero-icon {
    font-size: 8rem;
    color: rgba(255,255,255,0.2);
    margin-bottom: 2rem;
    animation: esquema-float 3s ease-in-out infinite;
  }

  .esquema-landing-page .hero-buttons .btn {
    box-shadow: var(--shadow-md);
    transition: var(--transition);
  }

  .esquema-landing-page .hero-buttons .btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
  }

  .esquema-landing-page .generator-section {
    background: linear-gradient(135deg, var(--bg-light) 0%, rgba(224, 247, 250, 0.3) 100%);
  }

  .esquema-landing-page .card {
    border: none;
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius-md);
    transition: var(--transition);
    overflow: hidden;
  }

  .esquema-landing-page .card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }

  .esquema-landing-page .card-header.bg-info {
    background: linear-gradient(135deg, #17a2b8, #20c997) !important;
  }

  .esquema-landing-page .card-header.bg-warning {
    background: var(--warning-gradient) !important;
  }

  .esquema-landing-page .card-header.bg-success {
    background: var(--success-gradient) !important;
  }

  .esquema-landing-page .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
  }

  .esquema-landing-page .form-control-lg {
    border-radius: var(--border-radius-sm);
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  }

  .esquema-landing-page .example-text {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.4;
    border-radius: var(--border-radius-sm);
  }

  .esquema-landing-page .btn-warning {
    background: var(--warning-gradient);
    border: none;
    font-weight: 600;
    transition: var(--transition);
  }

  .esquema-landing-page .btn-warning:hover {
    background: linear-gradient(45deg, #e0a800, #f39c12);
    transform: translateY(-1px);
  }

  .esquema-landing-page .btn-success {
    background: var(--success-gradient);
    border: none;
  }

  .esquema-landing-page .btn-success:hover {
    background: linear-gradient(45deg, #157347, var(--success-color));
  }

  .esquema-landing-page .btn-outline-success:hover {
    background: var(--success-color);
    border-color: var(--success-color);
  }

  .esquema-landing-page .btn-outline-info:hover {
    background: #17a2b8;
    border-color: #17a2b8;
  }

  .esquema-landing-page #charCount {
    font-weight: bold;
  }

  .esquema-landing-page .text-warning {
    color: var(--warning-color) !important;
  }

  .esquema-landing-page .results-section {
    background: linear-gradient(135deg, rgba(25, 135, 84, 0.05) 0%, rgba(25, 135, 84, 0.1) 100%);
  }

  .esquema-landing-page .result-image-container {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
  }

  .esquema-landing-page .result-image {
    max-height: 600px;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
  }

  .esquema-landing-page .result-image:hover {
    transform: scale(1.02);
  }

  .esquema-landing-page .modal-content {
    border: none;
    border-radius: var(--border-radius-md);
  }

  .esquema-landing-page .modal-fullscreen .modal-body {
    background: linear-gradient(135deg, #000, #1a1a1a);
  }

  .esquema-landing-page #modalImage {
    border-radius: var(--border-radius-sm);
    box-shadow: 0 4px 20px rgba(255,255,255,0.1);
  }

  .esquema-landing-page .btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
  }

  .esquema-landing-page .spinner-border {
    width: 1rem;
    height: 1rem;
  }

  @keyframes esquema-float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
  }

  .esquema-landing-page .result-card {
    animation: esquema-slideInUp 0.6s ease-out;
  }

  @keyframes esquema-slideInUp {
    from {
      opacity: 0;
      transform: translateY(30px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Duplicadas */
  .duplicates-page .container {
    --green-primary: #10b981;
    --green-dark: #047857;
    --green-light: #d1fae5;
    --red-primary: #ef4444;
    --red-light: #fef2f2;
  }

  .duplicates-page .page-header {
    background: linear-gradient(135deg, rgba(255,255,255,0.95), rgba(255,255,255,0.9));
    backdrop-filter: blur(10px);
    border: 1px solid rgba(16, 185, 129, 0.1);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  }

  .duplicates-page .page-title {
    background: linear-gradient(135deg, var(--green-primary), var(--green-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .duplicates-page .page-title i {
    color: var(--red-primary) !important;
    -webkit-text-fill-color: var(--red-primary) !important;
  }

  .duplicates-page .oposicion-card {
    border: 1px solid rgba(16, 185, 129, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .duplicates-page .oposicion-card:hover {
    border-color: rgba(16, 185, 129, 0.3);
    box-shadow: 0 20px 25px -5px rgba(16, 185, 129, 0.1);
  }

  .duplicates-page .oposicion-icon {
    background: linear-gradient(135deg, var(--green-primary), var(--green-dark));
  }

  .duplicates-page .toggle-btn {
    background: rgba(16, 185, 129, 0.1);
    color: var(--green-primary);
    border: 1px solid rgba(16, 185, 129, 0.2);
  }

  .duplicates-page .toggle-btn:hover {
    background: rgba(16, 185, 129, 0.2);
  }

  .duplicates-page .temas-container {
    background: linear-gradient(135deg, #f8fdf9, #f0fdf4);
    border-top: 1px solid rgba(16, 185, 129, 0.1);
  }

  .duplicates-page .btn-primary {
    background: linear-gradient(135deg, var(--green-primary), var(--green-dark));
    border: none;
    box-shadow: 0 4px 6px -1px rgba(16, 185, 129, 0.2);
  }

  .duplicates-page .btn-primary:hover {
    background: var(--green-dark);
    box-shadow: 0 10px 15px -3px rgba(16, 185, 129, 0.3);
  }

  .duplicates-page .tema-card {
    transition: all 0.2s ease;
    border: 1px solid #e5e7eb;
  }

  .duplicates-page .tema-card:hover {
    background: rgba(16, 185, 129, 0.05);
    border-color: var(--green-primary);
    transform: translateY(-1px);
  }

  .duplicates-page .tema-card.selected {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--green-primary);
    border-width: 2px;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
  }

  .duplicates-page .tema-numero {
    background: linear-gradient(135deg, var(--green-primary), var(--green-dark));
  }

  .duplicates-page .btn-analyze {
    background: linear-gradient(135deg, var(--green-primary), var(--green-dark));
    box-shadow: 0 10px 15px -3px rgba(16, 185, 129, 0.2);
  }

  .duplicates-page .btn-analyze:hover {
    background: var(--green-dark);
    box-shadow: 0 20px 25px -5px rgba(16, 185, 129, 0.3);
  }

  .duplicates-page .btn-delete {
    background: var(--danger-gradient);
    box-shadow: 0 10px 15px -3px rgba(239, 68, 68, 0.2);
  }

  .duplicates-page .btn-delete:hover {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    box-shadow: 0 20px 25px -5px rgba(239, 68, 68, 0.3);
  }

  .duplicates-page .duplicate-card {
    background: linear-gradient(135deg, var(--red-light), rgba(239, 68, 68, 0.05));
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-left: 4px solid var(--red-primary);
  }

  .duplicates-page .duplicate-themes {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.05));
    border: 1px solid rgba(245, 158, 11, 0.2);
  }

  .duplicates-page .selection-counter {
    background: linear-gradient(135deg, var(--green-primary), var(--green-dark));
    box-shadow: 0 20px 25px -5px rgba(16, 185, 129, 0.2), 0 10px 10px -5px rgba(16, 185, 129, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
  }

  .duplicates-page .selection-counter:hover {
    transform: translateY(-2px);
    box-shadow: 0 25px 35px -5px rgba(16, 185, 129, 0.3);
  }

  .duplicates-page .loading-overlay {
    backdrop-filter: blur(8px);
  }

  .duplicates-page .loading-content {
    background: linear-gradient(135deg, rgba(255,255,255,0.95), rgba(255,255,255,0.9));
    backdrop-filter: blur(10px);
    border: 1px solid rgba(16, 185, 129, 0.1);
  }

  .duplicates-page .spinner {
    border-top-color: var(--green-primary);
  }

  .duplicates-page .btn-action {
    position: relative;
    overflow: hidden;
  }

  .duplicates-page .btn-action::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
  }

  .duplicates-page .btn-action:hover::before {
    left: 100%;
  }

  @keyframes duplicatesFadeIn {
    from {
      opacity: 0;
      transform: translateY(20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .duplicates-page .oposicion-card {
    animation: duplicatesFadeIn 0.5s ease-out;
  }

  .duplicates-page .oposicion-card:nth-child(2) { animation-delay: 0.1s; }
  .duplicates-page .oposicion-card:nth-child(3) { animation-delay: 0.2s; }
  .duplicates-page .oposicion-card:nth-child(4) { animation-delay: 0.3s; }

  /* ================================================
     13. PROTECCIONES Y RESETS
     ================================================ */

  /* Protección platinum - resetear en páginas específicas */
  .upload-page .card-herramientas,
  .register-page .card-herramientas,
  .quiz-page .card-herramientas,
  .exam-page .card-herramientas,
  body.bg-login .card-herramientas {
    background: linear-gradient(135deg, #f8fafc, #f1f5f9) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1) !important;
    border: 1px solid #e2e8f0 !important;
  }

  .upload-page .card-herramientas::before,
  .upload-page .card-herramientas::after,
  .register-page .card-herramientas::before,
  .register-page .card-herramientas::after,
  .quiz-page .card-herramientas::before,
  .quiz-page .card-herramientas::after,
  .exam-page .card-herramientas::before,
  .exam-page .card-herramientas::after,
  body.bg-login .card-herramientas::before,
  body.bg-login .card-herramientas::after {
    display: none !important;
  }

  .upload-page .card-herramientas .icon-herramientas,
  .register-page .card-herramientas .icon-herramientas,
  .quiz-page .card-herramientas .icon-herramientas,
  .exam-page .card-herramientas .icon-herramientas,
  body.bg-login .card-herramientas .icon-herramientas,
  .upload-page .card-herramientas .title-herramientas,
  .register-page .card-herramientas .title-herramientas,
  .quiz-page .card-herramientas .title-herramientas,
  .exam-page .card-herramientas .title-herramientas,
  body.bg-login .card-herramientas .title-herramientas {
    background: var(--g-brand-dark) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    animation: none !important;
    filter: none !important;
  }

  .upload-page .card-herramientas .btn-herramientas,
  .register-page .card-herramientas .btn-herramientas,
  .quiz-page .card-herramientas .btn-herramientas,
  .exam-page .card-herramientas .btn-herramientas,
  body.bg-login .card-herramientas .btn-herramientas {
    background: var(--primary-color) !important;
    color: white !important;
    animation: none !important;
    border: 1px solid var(--primary-color) !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1) !important;
    text-shadow: none !important;
    text-transform: none !important;
    letter-spacing: normal !important;
    font-weight: 500 !important;
  }

  .upload-page .card-herramientas .btn-herramientas:hover,
  .register-page .card-herramientas .btn-herramientas:hover,
  .quiz-page .card-herramientas .btn-herramientas:hover,
  .exam-page .card-herramientas .btn-herramientas:hover,
  body.bg-login .card-herramientas .btn-herramientas:hover {
    background: #0056b3 !important;
    transform: translateY(-1px) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
  }

  .upload-page .card-herramientas .btn-herramientas::before,
  .register-page .card-herramientas .btn-herramientas::before,
  .quiz-page .card-herramientas .btn-herramientas::before,
  .exam-page .card-herramientas .btn-herramientas::before,
  body.bg-login .card-herramientas .btn-herramientas::before {
    display: none !important;
  }

  /* Resetear estilos específicos de página en otras páginas */
  body:not(.duplicates-page) .duplicates-container,
  body:not(.duplicates-page) .page-header,
  body:not(.duplicates-page) .temas-container,
  body:not(.duplicates-page) .selection-counter {
    background: inherit !important;
    border: inherit !important;
    box-shadow: inherit !important;
  }

  .content-wrapper {
    min-height: calc(100vh - var(--header-height-desktop));
    padding-top: 0;
  }

  .universal-content {
    padding-top: 20px;
    min-height: calc(100vh - var(--universal-navbar-height));
  }

  .universal-container {
    width: 100%;
    max-width: 1200px;
    padding: 2rem;
    margin: 0 auto;
  }

  /* ================================================
     14. UTILIDADES GENERALES
     ================================================ */
  .bi {
    vertical-align: -.125em;
  }

  .quiz-page,
  .exam-page,
  .home-page {
    padding-top: 20px !important;
  }

  .actualizar-fijo {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1040;
  }

  .modal-aviso .modal-header {
    background-color: var(--warning-color);
    color: #212529;
  }

  .modal-aviso .modal-body {
    font-size: 1.25rem;
  }

  .logout-btn,
  .logout-btn2 {
    position: static;
    margin: 0;
    padding: 0;
  }

  .logout-btn form {
    margin: 0;
  }

  /* Ejemplo section para esquemas */
  .example-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  }

  .example-image-container {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  }

  .example-image {
    transition: transform 0.3s ease;
  }

  .example-image:hover {
    transform: scale(1.02);
  }

  .rate-limit-warning {
    border-left: 4px solid var(--warning-color);
    background-color: #fff3cd;
    color: #856404;
  }

  .rate-limit-error {
    border-left: 4px solid var(--danger-color);
    background-color: #f8d7da;
    color: #721c24;
  }

  #loadingSpinner {
    animation: spin 1s linear infinite;
  }

  @keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }

  /* ================================================
     15. RESPONSIVE DESIGN
     ================================================ */

  /* Tablet */
  @media (max-width: 992px) {
    .universal-nav-left { gap: 18px; }
  }

  /* Tablet/Móvil — una sola fila */
  @media (max-width: 768px) {
    :root {
      --universal-navbar-height: 60px;
      --header-height-desktop: var(--header-height-mobile);
    }
    html { scroll-padding-top: 64px; }
    body { padding-top: var(--universal-navbar-height); }
    body.universal-navbar-page { padding-top: 64px !important; }

    .universal-navbar { height: var(--universal-navbar-height); min-height: var(--universal-navbar-height); }
    .universal-nav-container { flex-wrap: nowrap; height: 100%; padding: 0 16px; gap: 0; justify-content: space-between; align-items: center; }
    .universal-nav-brand { font-size: 1.1rem; }
    .universal-nav-brand i { font-size: 1.3rem; }

    /* Links — centrado absoluto se mantiene, solo reducir fuente */
    .universal-nav-left { gap: 16px; }
    .universal-nav-left a { font-size: 13px; padding: 2px 0; }

    /* Botones */
    .universal-nav-right { gap: 6px; flex-shrink: 0; }
    .btn-label { display: none; }
    .universal-btn { padding: 6px 10px; font-size: 12px; min-height: 32px; border-radius: 6px; gap: 0; }
    .universal-btn i { font-size: 1.1rem; }

    /* Landing navbar */
    .landing-nav-container { flex-wrap: wrap; gap: 8px; padding: 14px 18px; justify-content: space-between; align-items: center; }
    .landing-nav-brand { font-size: 1.35rem; order: 0; }
    .landing-nav-brand i { font-size: 1.6rem; }
    .landing-nav-left { display: flex !important; flex-wrap: wrap; gap: 14px; font-size: 14px; flex: 0 0 100%; order: 2; justify-content: flex-start; padding: 5px 0 4px; }
    .landing-nav-left a { margin-right: 0; }
    .landing-nav-right { display: flex !important; flex-direction: row !important; flex-wrap: nowrap; gap: 10px; order: 1; margin-left: auto; align-items: center; }
    .landing-nav-right .landing-btn { width: auto !important; padding: 10px 18px; }

    /* Resto de contenido */
    .landing-hero h1 { font-size: 2rem; }
    .landing-hero p { font-size: 1.1rem; }
    .landing-features-grid { grid-template-columns: 1fr; }
    .landing-stats { padding: 12px 25px; font-size: 0.95rem; }
    .landing-btn-large { padding: 12px 30px; font-size: 1rem; }
    .landing-section-title { font-size: 1.75rem; }
    .landing-cta h2 { font-size: 1.75rem; }
    .landing-cta p { font-size: 1rem; }
    .page-title-label { font-size: 2.5rem; }
    .pregunta-contenedor { min-height: 100px; max-height: 250px; padding: 1rem; }
    .pregunta-texto { font-size: 1rem; }
    .respuestas-contenedor { max-height: 270px; padding: 1rem; }
    .info-grid { grid-template-columns: 1fr; }
    .fechas-grid { grid-template-columns: 1fr; }
    .upload-zone { padding: 2rem 1rem; }
    .estadisticas { position: static; margin-bottom: 2rem; }
    .stats-circle { width: 100px; height: 100px; font-size: 2rem; }
    .estructura-json { max-height: 200px; }
    .card-herramientas { margin-bottom: 1.5rem; }
    .card-herramientas:hover { transform: translateY(-3px); }
    .card-herramientas .icon-herramientas { font-size: 3rem !important; }
    .card-herramientas .btn-herramientas { padding: 0.7rem 1.3rem !important; font-size: 0.9rem !important; }
    .universal-container { padding: 1.5rem; }
    .register-container { padding: 1.5rem !important; max-width: 95% !important; margin-top: 20px !important; }
    .register-container .page-title-label { font-size: 2.5rem !important; }
    .esquema-landing-page .hero-icon { font-size: 4rem; }
    .duplicates-page .page-title { font-size: 2rem; }
  }

  /* Móvil pequeño */
  @media (max-width: 576px) {
    :root { --universal-navbar-height: 52px; }
    body.universal-navbar-page { padding-top: 56px !important; }
    html { scroll-padding-top: 52px; }

    .universal-nav-container { padding: 0 12px; gap: 0; }
    .universal-nav-brand { font-size: 1rem; }
    .universal-nav-brand i { font-size: 1.15rem; }
    .universal-nav-left { gap: 12px; }
    .universal-nav-left a { font-size: 12px; }
    .universal-nav-right { gap: 4px; }
    .universal-btn { padding: 5px 8px; min-height: 28px; }
    .universal-btn i { font-size: 1rem; }

    /* Landing navbar */
    .landing-nav-container { padding: 12px 14px; }
    .landing-nav-brand { font-size: 1.2rem; }
    .landing-nav-brand i { font-size: 1.4rem; }
    .landing-nav-left { display: flex !important; gap: 12px; font-size: 13px; flex: 0 0 100%; order: 2; justify-content: flex-start; padding: 5px 0 3px; flex-wrap: wrap; }
    .landing-nav-right { flex-direction: row !important; flex-wrap: nowrap !important; gap: 8px; order: 1; margin-left: auto; }
    .landing-nav-right .landing-btn { width: auto !important; padding: 10px 14px; font-size: 13px; }
  }

  /* Móvil muy pequeño */
  @media (max-width: 400px) {
    :root { --universal-navbar-height: 48px; }
    body.universal-navbar-page { padding-top: 52px !important; }
    .universal-nav-brand .brand-text { display: none; }
    .universal-nav-brand i { font-size: 1.3rem; }
    .universal-nav-right { gap: 3px; }
    .universal-btn { padding: 4px 7px; }
    .top-right-buttons { flex-direction: column; align-items: stretch; }
    .register-container { padding: 1rem !important; }
    .register-container .step-item { flex-direction: column !important; text-align: center !important; }
    .register-container .step-number { margin-right: 0 !important; margin-bottom: 0.5rem !important; }
  }

  /* Landscape móvil */
  @media (max-width: 767px) and (orientation: landscape) {
    :root { --universal-navbar-height: 44px; }
    body.universal-navbar-page { padding-top: 48px !important; }
    html { scroll-padding-top: 44px; }
    .universal-nav-container { padding: 0 12px; }
  }

/* ================================================================
   PAGINA INICIO OPOSICIONES — v5.0 PREMIUM
   Diseño premium. Variables en :root arriba. No toca otras páginas.
   ================================================================ */

/* ── Layout principal ── */
.modern-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem 2rem 2rem;
  min-height: calc(100vh - var(--universal-navbar-height) - 40px);
}

/* ── HERO HEADER ── */
.main-header {
  text-align: center;
  margin-bottom: 2rem;
  padding: 2.8rem 2rem;
  background: linear-gradient(135deg, #0a0f1e 0%, #0b2416 50%, #0a1628 100%);
  border-radius: 24px;
  box-shadow: 0 12px 50px rgba(0,0,0,0.35), 0 0 0 1px rgba(34,197,94,0.08);
  position: relative;
  overflow: hidden;
}
.main-header::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(34,197,94,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34,197,94,0.04) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}
.main-header::after {
  content: '';
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 600px; height: 250px;
  background: radial-gradient(ellipse, rgba(8,112,33,0.22) 0%, transparent 70%);
  pointer-events: none;
}
.main-header h1 {
  font-size: 3rem;
  font-weight: 800;
  color: #fff;
  -webkit-text-fill-color: #fff;
  background: none;
  margin-bottom: 0.75rem;
  letter-spacing: -0.5px;
  position: relative; z-index: 1;
  text-shadow: 0 2px 24px rgba(34,197,94,0.25);
}
.main-header h1 i {
  color: #4ade80;
  -webkit-text-fill-color: #4ade80;
  filter: drop-shadow(0 0 10px rgba(74,222,128,0.6));
}
.main-header p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.65);
  font-weight: 400;
  max-width: 580px;
  margin: 0 auto;
  position: relative; z-index: 1;
  line-height: 1.6;
}
/* Botón X */
.main-header-close {
  position: absolute; top: 1rem; right: 1rem;
  background: rgba(255,255,255,.08);
  border: 1.5px solid rgba(255,255,255,.2);
  color: rgba(255,255,255,.6);
  width: 34px; height: 34px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: all .22s ease;
  z-index: 10; font-size: .9rem; flex-shrink: 0; padding: 0; line-height: 1;
}
.main-header-close:hover {
  background: rgba(255,255,255,.2); border-color: rgba(255,255,255,.6); color: #fff;
  transform: scale(1.1) rotate(90deg);
}
.main-header-close:focus { outline: none; }
/* Botón reabrir */
.main-header-reopen {
  display: none;
  width: 100%;
  padding: .7rem 2rem;
  background: linear-gradient(135deg, #0a0f1e 0%, #0b2416 50%, #0a1628 100%);
  border: 1.5px solid rgba(34,197,94,.25);
  border-radius: 16px;
  color: rgba(255,255,255,.7);
  font-size: .88rem; font-weight: 600; letter-spacing: .3px;
  cursor: pointer;
  margin-bottom: 1.5rem;
  transition: all .22s ease;
  box-shadow: 0 4px 20px rgba(0,0,0,.2);
  align-items: center; justify-content: center; gap: .5rem;
}
.main-header-reopen.is-visible { display: flex; }
.main-header-reopen:hover {
  color: #fff; border-color: rgba(34,197,94,.5);
  box-shadow: 0 6px 25px rgba(8,112,33,.2); transform: translateY(-1px);
}
.main-header-reopen:focus { outline: none; }
@media (max-width: 768px) {
  .main-header-close { display: none !important; }
  .main-header-reopen { display: none !important; }
}

/* ── GRID ── */
.modern-grid {
  display: grid;
  grid-template-columns: 235px 6fr 245px;
  gap: 1.25rem;
  align-items: start;
}

/* ══════════════════════════════════════════════════════
   CARDS — Base premium
══════════════════════════════════════════════════════ */
.modern-card {
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 2px 16px rgba(8,112,33,0.06), 0 0 0 1px rgba(8,112,33,0.06);
  border: none;
  transition: transform 0.28s cubic-bezier(.4,0,.2,1), box-shadow 0.28s cubic-bezier(.4,0,.2,1);
  overflow: hidden;
  position: relative;
  margin-bottom: 1.5rem;
}
.modern-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(8,112,33,0.13), 0 0 0 1px rgba(8,112,33,0.1);
}
/* Barra accent superior */
.modern-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #087021, #22c55e, #4ade80);
}

/* ── Card header ── */
.card-header-modern {
  padding: 1.1rem 1.4rem;
  border-bottom: 1px solid rgba(8,112,33,0.07);
  background: linear-gradient(135deg, #f0fdf4 0%, #f8fafc 100%);
  display: flex; align-items: center;
}
.card-header-modern h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #065318;
  margin: 0;
  display: flex; align-items: center; gap: 0.55rem;
  letter-spacing: 0.1px;
}
.card-header-modern i {
  font-size: 1.15rem;
  color: #087021;
}
/* Card body */
.card-body-modern {
  padding: 1.4rem 1.25rem;
}

/* ── text-muted en cards ── */
.modern-card .text-muted {
  color: #6b7280 !important;
  font-size: 0.85rem;
  line-height: 1.5;
}

/* ══════════════════════════════════════════════════════
   BOTONES — Sistema premium completo
══════════════════════════════════════════════════════ */
.btn-modern {
  padding: 0.65rem 1.1rem;
  border: none;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.22s cubic-bezier(.4,0,.2,1);
  cursor: pointer;
  text-align: center;
  position: relative;
  overflow: hidden;
  max-width: 100%;
  box-sizing: border-box;
  letter-spacing: 0.2px;
  line-height: 1.3;
}
.btn-modern::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.18) 0%, transparent 50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.22s ease;
}
.btn-modern:hover::after { opacity: 1; }
.btn-modern:hover {
  transform: translateY(-2px);
  text-decoration: none;
}
.btn-modern:active { transform: translateY(0); }
.btn-modern i { font-size: 1rem; flex-shrink: 0; }

/* Verde primario */
.btn-primary-modern {
  background: linear-gradient(135deg, #087021 0%, #065d1a 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(8,112,33,0.35), inset 0 1px 0 rgba(255,255,255,0.12);
}
.btn-primary-modern:hover {
  box-shadow: 0 8px 24px rgba(8,112,33,0.5);
  color: #fff;
  background: linear-gradient(135deg, #0a8a28 0%, #087021 100%);
}

/* Verde success */
.btn-success-modern {
  background: linear-gradient(135deg, #059669 0%, #087021 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(5,150,105,0.35), inset 0 1px 0 rgba(255,255,255,0.12);
}
.btn-success-modern:hover {
  box-shadow: 0 8px 24px rgba(5,150,105,0.5);
  color: #fff;
  filter: brightness(1.08);
}

/* Ámbar / warning */
.btn-warning-modern {
  background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(217,119,6,0.35), inset 0 1px 0 rgba(255,255,255,0.12);
}
.btn-warning-modern:hover {
  box-shadow: 0 8px 24px rgba(217,119,6,0.5);
  color: #fff;
}

/* Rojo danger */
.btn-danger-modern {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(220,38,38,0.35), inset 0 1px 0 rgba(255,255,255,0.12);
}
.btn-danger-modern:hover {
  box-shadow: 0 8px 24px rgba(220,38,38,0.5);
  color: #fff;
}

/* Cyan info */
.btn-info-modern {
  background: linear-gradient(135deg, #0891b2 0%, #0e7490 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(8,145,178,0.35), inset 0 1px 0 rgba(255,255,255,0.12);
}
.btn-info-modern:hover {
  box-shadow: 0 8px 24px rgba(8,145,178,0.5);
  color: #fff;
}

/* Outline peligro */
.btn-outline-danger {
  background: rgba(220,38,38,0.06);
  border: 1.5px solid rgba(220,38,38,0.4);
  color: #dc2626;
}
.btn-outline-danger:hover {
  background: linear-gradient(135deg, #dc2626, #b91c1c);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 6px 18px rgba(220,38,38,0.35);
}

/* Outline verde */
.btn-outline-modern {
  background: rgba(8,112,33,0.05);
  border: 1.5px solid rgba(8,112,33,0.35);
  color: #087021;
}
.btn-outline-modern:hover {
  background: linear-gradient(135deg, #087021, #065318);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 6px 18px rgba(8,112,33,0.35);
}

/* Morado */
.btn-purple-modern {
  background: linear-gradient(135deg, #7c3aed 0%, #5b21b6 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(124,58,237,0.35), inset 0 1px 0 rgba(255,255,255,0.12);
}
.btn-purple-modern:hover {
  box-shadow: 0 8px 24px rgba(124,58,237,0.5);
  color: #fff;
}

/* Gris admin */
.btn-admin {
  background: linear-gradient(135deg, #374151 0%, #1f2937 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(31,41,55,0.3), inset 0 1px 0 rgba(255,255,255,0.08);
  width: 100%;
}
.btn-admin:hover {
  box-shadow: 0 8px 22px rgba(31,41,55,0.45);
  color: #fff;
  background: linear-gradient(135deg, #4b5563 0%, #374151 100%);
}

/* Badge ADMIN */
.badge-overlay-admin {
  position: absolute; top: 4px; right: 6px;
  background: rgba(0,0,0,0.4);
  color: rgba(255,255,255,0.92);
  font-size: 0.6rem; font-weight: 800; letter-spacing: 1px;
  padding: 1px 5px; border-radius: 4px; line-height: 1.6;
  text-transform: uppercase;
}

/* ══════════════════════════════════════════════════════
   CARD DESTACADA — Personalizar cuestionario
══════════════════════════════════════════════════════ */
.featured-card {
  background: linear-gradient(160deg, #1c1008 0%, #2d1a0e 40%, #1a1505 100%);
  border: 1px solid rgba(251,191,36,0.2);
  position: relative; overflow: hidden;
}
.featured-card::before {
  background: linear-gradient(90deg, #d97706, #f59e0b, #fbbf24, #f59e0b, #d97706);
  height: 3px;
}
.featured-card::after {
  content: '';
  position: absolute; top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: conic-gradient(from 0deg, transparent 0%, rgba(251,191,36,0.04) 25%, transparent 50%, rgba(251,191,36,0.03) 75%, transparent 100%);
  animation: shimmer-inicio 8s linear infinite;
  pointer-events: none;
}
@keyframes shimmer-inicio {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.featured-card .card-header-modern {
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(251,191,36,0.12);
}
.featured-card .card-header-modern h4 {
  background: linear-gradient(90deg, #fbbf24, #f59e0b, #d97706);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  font-size: 1.05rem;
}
.featured-card .card-header-modern i { color: #f59e0b !important; }
.featured-card .text-muted {
  color: rgba(255,255,255,0.55) !important;
}
.featured-card small.text-muted {
  color: rgba(255,255,255,0.4) !important;
}
.featured-card .row.mb-3.small .col-6 small {
  color: rgba(255,255,255,0.78) !important;
}
.featured-card .text-dark {
  color: rgba(255,255,255,0.88) !important;
}
.featured-card .text-warning {
  color: #fbbf24 !important;
}

/* ══════════════════════════════════════════════════════
   FORMULARIO dentro de cards
══════════════════════════════════════════════════════ */
.form-control-modern {
  border: 1.5px solid rgba(8,112,33,0.2);
  border-radius: 10px;
  padding: 0.7rem 1rem;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  background: #fff;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.04);
}
.form-control-modern:focus {
  border-color: #087021;
  box-shadow: 0 0 0 3px rgba(8,112,33,0.12);
  outline: none;
}
.form-label.fw-semibold {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #374151;
}

/* ══════════════════════════════════════════════════════
   COLUMNA CENTRAL — Acordeones
══════════════════════════════════════════════════════ */
.central-column {
  max-height: calc(100vh - 180px);
  overflow-y: auto;
  padding-right: 0.5rem;
  scroll-behavior: smooth;
}
.central-column::-webkit-scrollbar { width: 5px; }
.central-column::-webkit-scrollbar-track { background: transparent; }
.central-column::-webkit-scrollbar-thumb { background: rgba(8,112,33,0.25); border-radius: 3px; }
.central-column::-webkit-scrollbar-thumb:hover { background: rgba(8,112,33,0.45); }

.accordion-modern { margin-bottom: 1.25rem; }
.accordion-modern .accordion-item {
  border: 1px solid rgba(8,112,33,0.1);
  border-radius: 12px !important;
  margin-bottom: 0.5rem;
  overflow: hidden;
  box-shadow: 0 1px 6px rgba(8,112,33,0.05);
  transition: box-shadow 0.2s ease;
}
.accordion-modern .accordion-item:hover { box-shadow: 0 4px 16px rgba(8,112,33,0.1); }
.accordion-modern .accordion-button {
  background: linear-gradient(135deg, #f8fffe 0%, #f0fdf4 100%);
  border: none;
  padding: 0.9rem 1.25rem;
  font-weight: 700;
  font-size: 0.88rem;
  color: #065318;
  transition: all 0.22s ease;
  letter-spacing: 0.1px;
}
.accordion-modern .accordion-button:not(.collapsed) {
  background: linear-gradient(135deg, #087021 0%, #22c55e 100%);
  color: #fff;
  box-shadow: none;
}
.accordion-modern .accordion-button:not(.collapsed)::after {
  filter: brightness(10);
}
.accordion-modern .accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(8,112,33,0.15);
}
.accordion-modern .accordion-body {
  padding: 1rem 1.25rem;
  background: #fff;
}

/* Tema links */
.tema-link {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.65rem 0.5rem;
  border-bottom: 1px solid rgba(8,112,33,0.07);
  text-decoration: none;
  color: #374151;
  transition: all 0.18s ease;
  border-radius: 8px;
  margin-bottom: 2px;
}
.tema-link:last-child { border-bottom: none; }
.tema-link:hover {
  color: #087021;
  background: linear-gradient(135deg, #f0fdf4, #dcfce7);
  padding-left: 1rem;
  text-decoration: none;
}
.tema-actions {
  display: flex; gap: 0.3rem; opacity: 0.6;
  transition: opacity 0.18s ease; align-items: center; flex-shrink: 0;
}
.tema-link:hover .tema-actions { opacity: 1; }
.tema-btn {
  padding: 0.22rem 0.45rem;
  border-radius: 6px;
  font-size: 0.68rem;
  text-decoration: none;
  transition: all 0.18s ease;
  width: 44px; height: 27px;
  display: flex; align-items: center; justify-content: center; text-align: center;
  font-weight: 600;
}
.tema-btn-view {
  background: rgba(220,38,38,0.08); color: #dc2626;
  border: 1px solid rgba(220,38,38,0.18);
}
.tema-btn-view:hover { background: #dc2626; color: #fff; text-decoration: none; box-shadow: 0 3px 8px rgba(220,38,38,0.3); }
.tema-btn-book {
  background: rgba(37,99,235,0.08); color: #2563eb;
  border: 1px solid rgba(37,99,235,0.18);
}
.tema-btn-book:hover { background: #2563eb; color: #fff; text-decoration: none; box-shadow: 0 3px 8px rgba(37,99,235,0.3); }

/* ══════════════════════════════════════════════════════
   STATS BADGES (estadísticas)
══════════════════════════════════════════════════════ */
.stats-badge {
  background: linear-gradient(135deg, #087021 0%, #22c55e 100%);
  color: #fff;
  padding: 1.1rem 1.25rem;
  border-radius: 14px;
  text-align: center;
  margin-bottom: 0.9rem;
  box-shadow: 0 6px 20px rgba(8,112,33,0.25), inset 0 1px 0 rgba(255,255,255,0.15);
  border: none;
  position: relative; overflow: hidden;
}
.stats-badge::after {
  content: '';
  position: absolute; top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  animation: slide-inicio 4s ease-in-out infinite;
}
@keyframes slide-inicio {
  0%, 100% { left: -100%; }
  50%       { left: 100%; }
}
.stats-badge-success {
  background: linear-gradient(135deg, #059669 0%, #10b981 100%);
  box-shadow: 0 6px 20px rgba(5,150,105,0.25), inset 0 1px 0 rgba(255,255,255,0.15);
}
.stats-number {
  font-size: 2.2rem; font-weight: 800; display: block;
  text-shadow: 0 2px 6px rgba(0,0,0,0.12); line-height: 1;
}
.stats-label {
  font-size: 0.78rem; opacity: 0.88; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.8px; margin-top: 0.3rem; display: block;
}

/* ══════════════════════════════════════════════════════
   TEST DE REPASO — Contadores
══════════════════════════════════════════════════════ */
.repaso-counter {
  display: flex; gap: 0.75rem; margin-bottom: 1.25rem;
}
.counter-item {
  flex: 1;
  background: #fff;
  border-radius: 14px;
  padding: 1rem 0.75rem;
  text-align: center;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  border: 1px solid rgba(0,0,0,0.05);
  transition: all 0.22s ease;
  position: relative; overflow: hidden;
}
.counter-item::before {
  content: '';
  position: absolute; inset: 0;
  opacity: 0.04;
}
.counter-item:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.1); }

.counter-danger  { border-top: 3px solid #ef4444; }
.counter-danger::before  { background: #ef4444; }
.counter-warning { border-top: 3px solid #f59e0b; }
.counter-warning::before { background: #f59e0b; }
.counter-success { border-top: 3px solid #10b981; }
.counter-success::before { background: #10b981; }

.counter-number {
  font-size: 2rem; font-weight: 800; margin-bottom: 0.3rem; line-height: 1;
}
.counter-danger  .counter-number { color: #ef4444; }
.counter-warning .counter-number { color: #f59e0b; }
.counter-success .counter-number { color: #10b981; }
.counter-label { font-size: 0.72rem; color: #9ca3af; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }

/* Contadores revisión */
.revision-counter {
  display: flex; gap: 0.5rem; margin-bottom: 0.75rem;
}
.revision-counter-item {
  flex: 1;
  background: #fff;
  border-radius: 12px;
  padding: 0.75rem 0.4rem;
  text-align: center;
  box-shadow: 0 1px 8px rgba(0,0,0,0.05);
  border: 1px solid rgba(0,0,0,0.05);
  transition: all 0.2s ease;
}
.revision-counter-item:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(0,0,0,0.09); }
.revision-counter-item.counter-danger  { border-top: 3px solid #ef4444; }
.revision-counter-item.counter-warning { border-top: 3px solid #f59e0b; }
.revision-counter-item.counter-success { border-top: 3px solid #10b981; }
.revision-counter-item--info           { border-top: 3px solid #0ea5e9; }
.revision-counter-number { font-size: 1.4rem; font-weight: 800; margin-bottom: 0.2rem; line-height: 1; }
.revision-counter-item.counter-danger  .revision-counter-number { color: #ef4444; }
.revision-counter-item.counter-warning .revision-counter-number { color: #f59e0b; }
.revision-counter-item.counter-success .revision-counter-number { color: #10b981; }
.revision-counter-item--info .revision-counter-number           { color: #0284c7; }
.revision-counter-label { font-size: 0.68rem; color: #9ca3af; font-weight: 600; text-transform: uppercase; letter-spacing: 0.4px; line-height: 1.2; }

/* Botones test de repaso */
.test-repaso-buttons { display: flex; flex-direction: column; gap: 0.6rem; margin-top: 1rem; }
.btn-repaso {
  padding: 0.6rem 0.9rem;
  border: none; border-radius: 10px;
  font-weight: 700; font-size: 0.82rem;
  text-decoration: none;
  display: flex; align-items: center; justify-content: center; gap: 0.45rem;
  transition: all 0.2s cubic-bezier(.4,0,.2,1);
  cursor: pointer; text-align: center;
  max-width: 100%; min-height: 38px; box-sizing: border-box;
  position: relative; overflow: hidden;
  letter-spacing: 0.2px;
}
.btn-repaso::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
  pointer-events: none; opacity: 0; transition: opacity 0.2s;
}
.btn-repaso:hover::after { opacity: 1; }
.btn-repaso-warning {
  background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(217,119,6,0.3);
}
.btn-repaso-warning:hover {
  transform: translateY(-2px); box-shadow: 0 8px 22px rgba(217,119,6,0.45);
  color: #fff; text-decoration: none;
}
.btn-repaso-danger {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(220,38,38,0.3);
}
.btn-repaso-danger:hover {
  transform: translateY(-2px); box-shadow: 0 8px 22px rgba(220,38,38,0.45);
  color: #fff; text-decoration: none;
}
.btn-repaso-row { display: flex; gap: 0.45rem; }
.btn-repaso-row .btn-repaso { flex: 1; font-size: 0.78rem; padding: 0.5rem 0.6rem; min-height: 36px; }

/* ══════════════════════════════════════════════════════
   HERRAMIENTAS ADMIN — columna derecha
══════════════════════════════════════════════════════ */
.admin-tools {
  background: linear-gradient(160deg, #0f172a 0%, #0a1628 60%, #0c1a0e 100%);
  border: 1px solid rgba(255,255,255,0.06) !important;
  box-shadow: 0 8px 32px rgba(0,0,0,0.25) !important;
}
.admin-tools:hover {
  transform: translateY(-3px) !important;
  box-shadow: 0 16px 48px rgba(0,0,0,0.32) !important;
}
.admin-tools::before {
  background: linear-gradient(90deg, #087021, #22c55e, #0891b2, #7c3aed);
}
.admin-tools .card-header-modern {
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.admin-tools .card-header-modern h4 {
  color: rgba(255,255,255,0.88);
  background: none;
  -webkit-text-fill-color: rgba(255,255,255,0.88);
  font-size: 1rem;
}
.admin-tools .card-header-modern i {
  color: #4ade80 !important;
  animation: rotate-inicio 6s linear infinite;
}
@keyframes rotate-inicio { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.admin-tools .card-body-modern { padding: 1.2rem 1rem; }
.admin-tools .card.shadow-sm {
  background: transparent; border: none !important; box-shadow: none !important; border-radius: 0;
}
.admin-tools .text-muted {
  color: rgba(255,255,255,0.45) !important;
  font-size: 0.78rem;
}

/* Botones admin dentro del panel oscuro — más compactos */
.admin-tools .btn-modern {
  margin-bottom: 0.45rem;
  padding: 0.55rem 0.9rem;
  font-size: 0.82rem;
  border-radius: 9px;
  min-height: 38px;
}
/* Estilo especial para grupo de botones en dark card */
.admin-tools .d-grid.gap-2 { gap: 0.45rem !important; }

/* ── Card solicitudes de acceso (dentro de admin-tools) ── */
.card-accent-green {
  background: rgba(255,255,255,0.04) !important;
  border: 1px solid rgba(52,211,153,0.18) !important;
  box-shadow: none;
  border-radius: 14px !important;
  margin-bottom: 0.9rem;
}
.card-accent-green::before { background: linear-gradient(90deg, #059669, #10b981, #34d399) !important; }
.card-accent-green:hover { transform: none; box-shadow: none; }
.card-header-mint {
  background: rgba(52,211,153,0.06) !important;
  border-bottom: 1px solid rgba(52,211,153,0.12) !important;
}
.text-gradient-brand {
  background: linear-gradient(90deg, #34d399, #4ade80);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  font-weight: 700; margin: 0;
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.9rem;
}
.icon-brand { color: #34d399; font-size: 1rem; }

/* Solicitudes items */
.solicitud-no-pending {
  display: flex; align-items: center; gap: 0.5rem;
  color: #34d399; font-weight: 600; font-size: 0.82rem;
  padding: 0.6rem 0.8rem;
  background: rgba(52,211,153,0.08);
  border-radius: 8px; border: 1px solid rgba(52,211,153,0.15);
}
.solicitud-pending-badge {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.65rem 0.8rem;
  background: rgba(245,158,11,0.08);
  border-radius: 10px; border: 1px solid rgba(245,158,11,0.18);
  margin-bottom: 0.75rem;
}
.solicitud-pending-count {
  font-size: 1.8rem; font-weight: 800; color: #fbbf24; line-height: 1; min-width: 2rem; text-align: center;
}
.solicitud-pending-title { display: block; color: #fde68a; font-size: 0.8rem; font-weight: 700; }
.solicitud-pending-sub   { display: block; color: rgba(253,230,138,0.6); font-size: 0.7rem; margin-top: 0.1rem; }
.solicitud-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px; padding: 0.65rem 0.75rem;
  margin-bottom: 0.4rem; transition: background 0.18s ease;
}
.solicitud-item:hover { background: rgba(255,255,255,0.07); }
.solicitud-item:last-child { margin-bottom: 0; }
.solicitud-item-email { font-weight: 600; font-size: 0.82rem; color: rgba(255,255,255,0.85); margin-bottom: 0.15rem; }
.solicitud-item-meta  { font-size: 0.72rem; color: rgba(255,255,255,0.4); margin-bottom: 0.45rem; }
.solicitud-item-actions { display: flex; gap: 0.35rem; }
.btn-aprobar-mini {
  padding: 0.28rem 0.65rem;
  background: linear-gradient(135deg, #059669, #10b981); color: #fff;
  border: none; border-radius: 6px; font-size: 0.72rem; font-weight: 700;
  cursor: pointer; transition: all 0.18s ease; display: inline-flex; align-items: center; gap: 0.2rem;
}
.btn-aprobar-mini:hover { background: linear-gradient(135deg, #047857, #059669); transform: translateY(-1px); box-shadow: 0 3px 8px rgba(5,150,105,0.4); }
.btn-rechazar-mini {
  padding: 0.28rem 0.65rem;
  background: linear-gradient(135deg, #dc2626, #ef4444); color: #fff;
  border: none; border-radius: 6px; font-size: 0.72rem; font-weight: 700;
  cursor: pointer; transition: all 0.18s ease; display: inline-flex; align-items: center; gap: 0.2rem;
}
.btn-rechazar-mini:hover { background: linear-gradient(135deg, #b91c1c, #dc2626); transform: translateY(-1px); box-shadow: 0 3px 8px rgba(220,38,38,0.4); }

/* Reject overlay */
.reject-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.65); backdrop-filter: blur(6px); z-index: 2000;
  align-items: center; justify-content: center;
}
.reject-overlay.is-open { display: flex; }
.reject-dialog {
  background: #1e2937; border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px; padding: 2rem; width: 100%; max-width: 440px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5); margin: 1rem;
}
.reject-dialog h5 { margin-bottom: 0.4rem; font-size: 1.05rem; font-weight: 700; color: #f9fafb; }
.reject-dialog p { color: rgba(255,255,255,0.5); font-size: 0.88rem; margin-bottom: 1rem; }
.reject-dialog label { display: block; font-size: 0.8rem; font-weight: 600; color: rgba(255,255,255,0.65); margin-bottom: 0.4rem; }
.reject-dialog textarea {
  width: 100%; background: rgba(255,255,255,0.06); border: 1.5px solid rgba(255,255,255,0.1);
  color: #f9fafb; border-radius: 10px; padding: 0.7rem 0.9rem; font-size: 0.88rem;
  resize: vertical; min-height: 90px; transition: border-color 0.18s ease; outline: none; box-sizing: border-box;
}
.reject-dialog textarea:focus { border-color: #ef4444; box-shadow: 0 0 0 3px rgba(239,68,68,0.15); }
.reject-dialog-actions { display: flex; gap: 0.6rem; margin-top: 1rem; justify-content: flex-end; }
.btn-reject-cancel {
  padding: 0.55rem 1.2rem; border: 1.5px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.75);
  border-radius: 9px; font-weight: 600; font-size: 0.85rem; cursor: pointer; transition: all 0.18s ease;
}
.btn-reject-cancel:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.3); }
.btn-reject-confirm {
  padding: 0.55rem 1.2rem;
  background: linear-gradient(135deg, #dc2626, #ef4444); color: #fff;
  border: none; border-radius: 9px; font-weight: 700; font-size: 0.85rem; cursor: pointer; transition: all 0.18s ease;
}
.btn-reject-confirm:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(220,38,38,0.4); }

/* ══════════════════════════════════════════════════════
   PROPUESTAS DE MEJORA
══════════════════════════════════════════════════════ */
.card-propuestas {
  background: linear-gradient(160deg, #14082a 0%, #1a0c38 50%, #0f1528 100%);
  border: 1px solid rgba(167,139,250,0.12) !important;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2) !important;
}
.card-propuestas:hover { transform: translateY(-3px) !important; box-shadow: 0 16px 48px rgba(0,0,0,0.28) !important; }
.card-propuestas::before { background: linear-gradient(90deg, #7c3aed, #a855f7, #c084fc, #a855f7, #7c3aed); }
.card-header-translucent {
  background: rgba(124,58,237,0.08) !important;
  border-bottom: 1px solid rgba(124,58,237,0.12) !important;
}
.text-gradient-purple {
  background: linear-gradient(90deg, #c084fc, #a855f7, #7c3aed);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  font-weight: 700; margin: 0; display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem;
}
.icon-purple { color: #a855f7 !important; font-size: 1rem; }
.card-propuestas .btn-purple-modern { margin-top: 0.25rem; }

/* Grid 2×2 stats propuestas */
.propuestas-stats-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; margin-bottom: 0.9rem;
}
.propuesta-stat-item {
  border-radius: 10px; padding: 0.8rem 0.5rem; text-align: center;
  border: 1px solid transparent; transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.propuesta-stat-item:hover { transform: translateY(-2px); }
.propuesta-stat-item--purple { background: rgba(124,58,237,0.1); border-color: rgba(124,58,237,0.18); }
.propuesta-stat-item--green  { background: rgba(16,185,129,0.1); border-color: rgba(16,185,129,0.18); }
.propuesta-stat-item--blue   { background: rgba(59,130,246,0.1); border-color: rgba(59,130,246,0.18); }
.propuesta-stat-item--amber  { background: rgba(245,158,11,0.1); border-color: rgba(245,158,11,0.18); }
.propuesta-stat-num {
  font-size: 1.7rem; font-weight: 800; line-height: 1; margin-bottom: 0.2rem; display: block;
}
.propuesta-stat-num--purple { color: #c084fc; }
.propuesta-stat-num--green  { color: #34d399; }
.propuesta-stat-num--blue   { color: #60a5fa; }
.propuesta-stat-num--amber  { color: #fbbf24; }
.propuesta-stat-label {
  font-size: 0.68rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.4px;
  color: rgba(255,255,255,0.45);
}

/* ══════════════════════════════════════════════════════
   ACCESO RÁPIDO
══════════════════════════════════════════════════════ */
.quick-access { display: flex; flex-direction: column; gap: 0.6rem; }
.quick-btn {
  padding: 0.85rem 1rem;
  border-radius: 12px; text-decoration: none; font-weight: 700; font-size: 0.82rem;
  text-align: center; transition: all 0.22s ease;
  display: flex; align-items: center; justify-content: center; gap: 0.6rem;
  letter-spacing: 0.3px; position: relative; overflow: hidden;
}
.quick-btn::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent 60%);
  pointer-events: none; opacity: 0; transition: opacity 0.2s;
}
.quick-btn:hover::after { opacity: 1; }
.quick-btn-oficial {
  background: linear-gradient(135deg, #dc2626, #991b1b); color: #fff;
  box-shadow: 0 4px 16px rgba(220,38,38,0.3);
}
.quick-btn-mono {
  background: linear-gradient(135deg, #4b5563, #1f2937); color: #fff;
  box-shadow: 0 4px 16px rgba(31,41,55,0.3);
}
.quick-btn-leg {
  background: linear-gradient(135deg, #059669, #065318); color: #fff;
  box-shadow: 0 4px 16px rgba(5,150,105,0.3);
}
.quick-btn:hover { transform: translateY(-3px); text-decoration: none; color: #fff; }
.quick-btn-oficial:hover { box-shadow: 0 8px 28px rgba(220,38,38,0.45); }
.quick-btn-mono:hover    { box-shadow: 0 8px 28px rgba(31,41,55,0.45); }
.quick-btn-leg:hover     { box-shadow: 0 8px 28px rgba(5,150,105,0.45); }

/* ══════════════════════════════════════════════════════
   SPINNER DE CARGA
══════════════════════════════════════════════════════ */
.loading-spinner {
  display: flex; justify-content: center; align-items: center; padding: 2rem;
}
.spinner {
  width: 36px; height: 36px;
  border: 3px solid rgba(8,112,33,0.12);
  border-top: 3px solid #087021;
  border-radius: 50%;
  animation: spin-inicio 0.9s linear infinite;
}
@keyframes spin-inicio { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

/* ══════════════════════════════════════════════════════
   TEMARIOS
══════════════════════════════════════════════════════ */
.temarios-grid { display: flex; flex-direction: column; gap: 0.6rem; }
.temarios-grid .btn-modern {
  width: 100%; min-height: 54px;
  display: flex; align-items: center; justify-content: center;
  text-align: center; white-space: normal; padding: 0.7rem 0.9rem;
}

/* ══════════════════════════════════════════════════════
   FOOTER PREMIUM
══════════════════════════════════════════════════════ */
.main-footer {
  background: linear-gradient(135deg, #0a0f1e 0%, #0b2416 50%, #0a1628 100%);
  border-top: 1px solid rgba(255,255,255,0.06);
  margin-top: 2.5rem;
  padding: 0;
}
.modern-footer-wrapper { padding-top: 0 !important; padding-bottom: 0 !important; }
.main-footer-inner {
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  justify-content: center; padding: 1.25rem 0;
}
.footer-brand {
  color: rgba(255,255,255,0.85); font-weight: 800; font-size: 0.9rem;
  display: flex; align-items: center; gap: 0.35rem;
}
.footer-brand i { color: #4ade80; }
.footer-sep { color: rgba(255,255,255,0.2); font-size: 0.75rem; }
.main-footer-inner p { margin: 0; color: rgba(255,255,255,0.4); font-size: 0.8rem; }
.main-footer-inner a {
  color: rgba(255,255,255,0.45); text-decoration: none; font-size: 0.8rem;
  display: flex; align-items: center; gap: 0.3rem;
  transition: color 0.2s ease; padding: 0.1rem 0;
}
.main-footer-inner a:hover { color: #4ade80; text-decoration: none; }
@media (max-width: 575px) {
  .main-footer-inner { gap: 0.5rem; }
  .footer-sep { display: none; }
}

/* ══════════════════════════════════════════════════════
   RESPONSIVE — pagina_inicio_oposiciones
══════════════════════════════════════════════════════ */
@media (min-width: 1400px) {
  .modern-grid { grid-template-columns: 270px 6fr 270px; gap: 1.5rem; }
  .modern-container { padding: 1.5rem 2.5rem 2rem; }
  .main-header h1 { font-size: 3.4rem; }
  .main-header p  { font-size: 1.25rem; }
}
@media (min-width: 1200px) and (max-width: 1399px) {
  .modern-grid { grid-template-columns: 245px 6fr 255px; gap: 1.25rem; }
}
@media (max-width: 1199px) and (min-width: 992px) {
  .modern-grid { grid-template-columns: 210px 6fr 215px; gap: 1rem; }
  .modern-container { padding: 1rem 1.5rem 1.5rem; }
}
@media (max-width: 991px) {
  .modern-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .modern-container { padding: 1rem 1.25rem 1.5rem; }
  .main-header,
  .main-header-reopen { display: none !important; }
  .central-column { max-height: none; order: 1; }
  .modern-grid > div:nth-child(1) { order: 2; }
  .modern-grid > div:nth-child(3) { order: 3; }
}
@media (max-width: 767px) {
  .modern-container { padding: 0.75rem 0.75rem 1rem; margin-top: 0; }
  .modern-grid { grid-template-columns: 1fr; gap: 1.25rem; }
  .card-header-modern, .card-body-modern { padding: 0.9rem; }
  .card-header-modern h4 { font-size: 0.95rem; }
  .repaso-counter { flex-direction: column; gap: 0.6rem; }
  .revision-counter { flex-direction: column; gap: 0.4rem; }
  .stats-number { font-size: 2rem; }
  .btn-modern { padding: 0.7rem 0.9rem; font-size: 0.85rem; }
  .temarios-grid .btn-modern { min-height: 48px; font-size: 0.82rem; }
  .accordion-modern .accordion-button { padding: 0.85rem 1rem; font-size: 0.88rem; }
  .tema-link { padding: 0.6rem 0.4rem; font-size: 0.88rem; }
  .quick-btn { padding: 0.75rem 0.9rem; font-size: 0.85rem; }
}
@media (max-width: 575px) {
  .modern-container { padding: 0.5rem 0.6rem 0.75rem; }
  .card-header-modern, .card-body-modern { padding: 0.8rem 0.75rem; }
  .card-header-modern h4 { font-size: 0.88rem; }
  .btn-modern { padding: 0.65rem 0.8rem; font-size: 0.82rem; }
  .btn-repaso-row { flex-direction: column; gap: 0.4rem; }
  .counter-number { font-size: 1.7rem; }
  .stats-number { font-size: 1.8rem; }
  .propuestas-stats-grid { gap: 0.4rem; }
}
@media (max-width: 480px) {
  .modern-container { padding: 0.4rem 0.4rem 0.6rem; }
  .btn-modern { padding: 0.6rem 0.7rem; font-size: 0.8rem; }
  .counter-number { font-size: 1.5rem; }
  .stats-number { font-size: 1.6rem; }
}
/* mini-cards PC en columna central */
@media (min-width: 769px) {
  .central-column .accordion-modern .accordion-body { padding: .5rem .6rem .35rem; }
  .central-column .tema-link {
    padding: .75rem .9rem !important; border-radius: 10px !important;
    margin-bottom: .35rem; border: 1px solid rgba(8,112,33,.08) !important;
    border-bottom: 1px solid rgba(8,112,33,.08) !important;
    background: #fff !important; box-shadow: 0 1px 5px rgba(8,112,33,.04);
    transition: all .18s ease !important;
  }
  .central-column .tema-link:last-child { margin-bottom: 0; }
  .central-column .tema-link:hover {
    background: linear-gradient(135deg,#f0fdf4,#dcfce7) !important;
    border-color: rgba(8,112,33,.15) !important;
    padding-left: 1.2rem !important;
    transform: translateX(3px) !important;
    box-shadow: 0 3px 12px rgba(8,112,33,.09) !important;
  }
  .central-column .tema-link > a { font-size: .88rem !important; line-height: 1.45; }
  .central-column .tema-btn { width: 54px !important; height: 32px !important; font-size: .76rem !important; border-radius: 7px !important; }
  .central-column .supuesto-row-pc {
    padding: .7rem .9rem !important; border-radius: 10px;
    border: 1px solid rgba(8,112,33,.08); background: #fff;
    margin-bottom: .35rem; transition: all .18s ease;
    box-shadow: 0 1px 5px rgba(8,112,33,.04);
  }
  .central-column .supuesto-row-pc:hover {
    background: linear-gradient(135deg,#f0fdf4,#dcfce7);
    border-color: rgba(8,112,33,.15);
    transform: translateX(3px); box-shadow: 0 3px 12px rgba(8,112,33,.09);
  }
}
/* Animación propuestas (usada en otros sitios) */
@keyframes propSlide { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
     16. QUIZ UNIVERSAL — compartido entre preguntas
         normales y supuestos (quiz_pregunta_supuesto)
     ================================================ */

  /* ── Animaciones quiz ── */
  @keyframes quiz-shine {
    0%, 100% { left: -100%; }
    50%       { left: 100%; }
  }
  @keyframes quiz-pulso-actual {
    0%, 100% { transform: scale(1); }
    50%       { transform: scale(1.05); }
  }
  @keyframes quiz-pulse-examen {
    0%, 100% { box-shadow: 0 8px 25px rgba(0,0,0,.15), 0 0 0 0 rgba(220,53,69,.7); transform: scale(1); }
    50%       { box-shadow: 0 8px 25px rgba(0,0,0,.15), 0 0 0 10px rgba(220,53,69,0); transform: scale(1.02); }
  }

  /* ── Banner modo examen ── */
  .modo-examen-header {
    text-align: center;
    margin-bottom: 1rem;
    padding: 0 .5rem;
  }
  .modo-examen-banner {
    display: inline-flex;
    align-items: center;
    gap: .8rem;
    padding: 1rem 2rem;
    border-radius: var(--r-lg, 18px);
    font-size: 1.2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    max-width: 100%;
  }
  .modo-examen-banner::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,.2), transparent);
    animation: quiz-shine 3s ease-in-out infinite;
  }

  /* Banner supuesto — verde corporativo (igual que el landing) */
  .modo-banner-supuesto {
    background: linear-gradient(135deg, #087021 0%, #22c55e 100%);
    color: white;
  }

  /* Resto de banners sin cambios */
  .modo-banner-general      { background: linear-gradient(45deg, #007bff, #00c6ff); color: white; }
  .modo-banner-ia           { background: linear-gradient(45deg, #00c6ff, #0072ff); color: white; }
  .modo-banner-examen       { background: linear-gradient(45deg, #dc3545, #f1556c); color: white; animation: quiz-pulse-examen 2s infinite; }
  .modo-banner-estudio      { background: linear-gradient(45deg, #ffc107, #ffeb3b); color: #212529; }
  .modo-banner-personalizar { background: linear-gradient(45deg, #212529, #495057); color: white; }
  .modo-banner-falladas     { background: linear-gradient(45deg, #fd7e14, #e63946); color: white; }
  .modo-banner-temas        { background: linear-gradient(45deg, #6f42c1, #d63384); color: white; }

  /* ── Header verde quiz ── */
  .quiz-header {
    background: var(--g-brand, linear-gradient(135deg,#087021 0%,#22c55e 100%));
    color: white;
    padding: 2rem 0;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
  }
  .quiz-header::before {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(224,247,250,.3) 0%, rgba(8,112,33,.05) 50%, rgba(8,112,33,.2) 70%);
    opacity: .3;
    pointer-events: none;
  }

  /* Header supuesto: mismo verde que el landing (g-brand) */
  .quiz-header-supuesto {
    background: var(--g-brand, linear-gradient(135deg, #087021 0%, #22c55e 100%));
  }

  .quiz-info-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    position: relative;
    z-index: 1;
  }
  .oposicion-info  { justify-self: start; }
  .modo-examen-info{ justify-self: end; }
  .pregunta-counter{ text-align: center; justify-self: center; }

  .oposicion-badge, .modo-badge {
    background: rgba(255,255,255,.25);
    backdrop-filter: blur(15px);
    padding: .8rem 1.4rem;
    border-radius: var(--r-lg, 18px);
    border: 1px solid rgba(255,255,255,.3);
    font-weight: 600;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: .7rem;
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
    transition: var(--t);
  }
  .pregunta-counter h4 {
    margin: 0;
    font-size: 2rem;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0,0,0,.1);
  }
  .pregunta-counter .badge {
    font-size: 1rem;
    padding: .7rem 1.4rem;
    background: rgba(255,255,255,.2);
    color: white;
    border: 1px solid rgba(255,255,255,.3);
    border-radius: var(--r-md, 12px);
    margin-top: .5rem;
  }

  /* ── Tarjeta de supuesto (verde, igual que el landing) ── */
  .supuesto-info-card {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border: 1px solid rgba(8,112,33,.15);
    border-left: 4px solid var(--brand, #087021);
    border-radius: var(--r-md, 12px);
    padding: 1.2rem 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-brand-sm, 0 2px 8px rgba(8,112,33,.08));
    transition: var(--t);
  }
  .supuesto-info-card:hover {
    box-shadow: var(--shadow-brand-md, 0 4px 20px rgba(8,112,33,.12));
    transform: translateY(-1px);
  }
  .supuesto-info-header {
    display: flex;
    align-items: center;
    gap: .8rem;
    margin-bottom: .8rem;
    padding-bottom: .6rem;
    border-bottom: 1px solid rgba(8,112,33,.12);
  }
  .supuesto-info-header h6 {
    margin: 0;
    font-weight: 700;
    color: var(--brand, #087021);
    font-size: 1rem;
  }
  .supuesto-info-badge {
    background: linear-gradient(135deg, #087021 0%, #22c55e 100%);
    color: white;
    padding: .25rem .75rem;
    border-radius: var(--r-pill, 50px);
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .3px;
    flex-shrink: 0;
  }
  .supuesto-enunciado {
    font-size: .9rem;
    line-height: 1.5;
    color: #374151;
    font-style: italic;
    background: rgba(255,255,255,.8);
    padding: .6rem 1rem;
    border-radius: var(--r-sm, 8px);
    border: 1px solid rgba(8,112,33,.1);
  }
  .supuesto-oposicion-tags {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
    margin-top: .7rem;
  }
  .supuesto-oposicion-tag {
    background: linear-gradient(135deg, #087021 0%, #22c55e 100%);
    color: white;
    padding: .2rem .7rem;
    border-radius: var(--r-pill, 50px);
    font-size: .72rem;
    font-weight: 600;
  }
  .supuesto-tema-tag {
    background: linear-gradient(135deg, var(--cyber,#06b6d4), var(--cyber-dark,#0891b2));
    color: white;
    padding: .2rem .7rem;
    border-radius: var(--r-pill, 50px);
    font-size: .72rem;
    font-weight: 600;
  }

  /* ── Contenedor quiz ── */
  .contenido-quiz {
    width: 100%;
    max-width: 1060px;
    margin: 0 auto;
    background: white;
    border-radius: var(--r-md, 12px);
    box-shadow: var(--shadow-md);
    overflow: hidden;
  }

  /* ── Área pregunta ── */
  .pregunta-contenedor {
    min-height: 120px;
    background: linear-gradient(135deg, rgba(224,247,250,.3) 0%, rgba(8,112,33,.05) 50%, rgba(8,112,33,.2) 70%);
    border-bottom: 2px solid rgba(8,112,33,.15);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 2rem;
  }
  /* Supuesto: mismo fondo verde claro del landing */
  .pregunta-contenedor.pregunta-contenedor-supuesto {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 60%, #f0fdf4 100%);
    border-bottom: 2px solid rgba(8,112,33,.15);
  }
  .pregunta-area {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
  }
  .pregunta-texto {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--success-color, #198754);
    font-weight: 600;
    word-wrap: break-word;
    hyphens: auto;
    max-width: 100%;
  }
  /* Supuesto: verde corporativo en lugar de naranja */
  .pregunta-texto-supuesto {
    color: var(--brand, #087021);
  }

  /* ── Área respuestas ── */
  .respuestas-contenedor {
    height: auto;
    max-height: 340px;
    padding: 1.2rem 1.8rem;
    overflow-y: auto;
    background: white;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
  }
  .respuestas-contenedor::-webkit-scrollbar { width: 6px; }
  .respuestas-contenedor::-webkit-scrollbar-track { background: #f1f1f1; border-radius: 3px; }
  .respuestas-contenedor::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #087021, #22c55e);
    border-radius: 3px;
  }

  /* list-group items del quiz */
  .quiz-list-item {
    border: 1px solid rgba(8,112,33,.15);
    margin-bottom: 2px;
    border-radius: var(--r-sm, 8px) !important;
    word-wrap: break-word;
    transition: var(--t);
    min-height: 44px;
    display: flex;
    align-items: center;
    cursor: pointer;
  }
  .quiz-list-item:hover {
    background: linear-gradient(135deg, rgba(240,253,244,.8) 0%, rgba(220,252,231,.6) 100%);
    border-color: var(--brand, #087021);
    transform: translateX(4px);
  }
  .quiz-list-item strong { margin-right: 8px; color: var(--brand, #087021); }

  /* Supuesto: mismo verde que preguntas normales */
  .quiz-list-item.quiz-list-item-supuesto {
    border-color: rgba(8,112,33,.12);
  }
  .quiz-list-item.quiz-list-item-supuesto:hover {
    background: linear-gradient(135deg, rgba(240,253,244,.8) 0%, rgba(220,252,231,.5) 100%);
    border-color: var(--brand, #087021);
  }
  .quiz-list-item.quiz-list-item-supuesto strong { color: var(--brand, #087021); }

  /* ── Feedback ── */
  .feedback-container {
    min-height: 70px;
    margin: 0 1rem 1rem;
    transition: var(--t);
  }
  .feedback-container .alert { margin-bottom: 0; border-radius: var(--r-md, 12px); }
  .respuesta-feedback {
    font-size: 1.2rem;
    font-weight: 700;
    text-align: center;
    padding: 1rem;
    border-radius: var(--r-md, 12px);
    margin: 1rem 0;
  }
  .respuesta-incorrecta-examen {
    background: linear-gradient(135deg, rgba(220,53,69,.1), rgba(248,215,218,.3));
    color: var(--danger-color, #dc3545);
    border: 2px solid rgba(220,53,69,.3);
  }
  .respuesta-correcta-examen {
    background: linear-gradient(135deg, rgba(8,112,33,.1), rgba(220,252,231,.3));
    color: var(--brand, #087021);
    border: 2px solid rgba(8,112,33,.2);
  }

  /* ── Navegación de preguntas ── */
  .preguntas-navegacion {
    background: white;
    border-radius: var(--r-md, 12px);
    box-shadow: var(--shadow-md);
    margin-top: 2rem;
    padding: 1.5rem;
    border: 2px solid rgba(8,112,33,.1);
  }
  .navegacion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: .75rem;
    border-bottom: 2px solid rgba(8,112,33,.1);
  }
  .navegacion-header h5 {
    margin: 0;
    font-weight: 700;
    color: var(--brand, #087021);
    display: flex;
    align-items: center;
    gap: .5rem;
  }
  .navegacion-stats { display: flex; gap: 1rem; font-size: .85rem; }
  .stat-item {
    display: flex;
    align-items: center;
    gap: .3rem;
    padding: .3rem .6rem;
    border-radius: var(--r-sm, 8px);
    font-weight: 600;
  }
  .stat-correctas    { background: rgba(8,112,33,.1);   color: var(--brand, #087021); }
  .stat-incorrectas  { background: rgba(220,53,69,.1);  color: var(--danger-color, #dc3545); }
  .stat-sin-responder{ background: rgba(108,117,125,.1); color: #6c757d; }
  .stat-saltadas     { background: rgba(255,193,7,.1);   color: #856404; }

  .preguntas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: .75rem;
    margin-top: 1rem;
  }
  .pregunta-nav-btn {
    width: 60px; height: 60px;
    border-radius: var(--r-md, 12px);
    border: 2px solid;
    background: white;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 1rem;
    text-decoration: none;
    transition: var(--t);
    cursor: pointer;
  }
  .pregunta-nav-btn:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
  .pregunta-nav-btn.sin-responder { border-color: #dee2e6; color: #6c757d; background: #f8f9fa; }
  .pregunta-nav-btn.correcto      { border-color: var(--brand,#087021); color: white; background: linear-gradient(135deg, #087021, #22c55e); }
  .pregunta-nav-btn.incorrecto    { border-color: var(--danger-color,#dc3545); color: white; background: linear-gradient(45deg,#dc3545,#f1556c); }
  .pregunta-nav-btn.saltada       { border-color: #ffc107; color: #212529; background: linear-gradient(45deg,#ffc107,#ffeb3b); }
  .pregunta-nav-btn.actual        { animation: quiz-pulso-actual 2s infinite; border-width: 3px !important; }

  /* ── Barra de progreso ── */
  .quiz-progress { border-radius: var(--r-lg,18px); box-shadow: var(--shadow-sm); background-color: rgba(8,112,33,.08); }
  .quiz-progress .progress-bar {
    background: linear-gradient(135deg, #087021, #22c55e);
    border-radius: var(--r-lg,18px);
    transition: width .5s ease;
  }
  /* Supuesto: mismo verde */
  .quiz-progress-supuesto { background-color: rgba(8,112,33,.08); }
  .quiz-progress-supuesto .progress-bar {
    background: linear-gradient(135deg, #065318, #087021, #22c55e);
  }

  /* ── Resultado supuesto ── */
  .resultado-supuesto-hero {
    text-align: center;
    padding: 2rem 1rem;
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border-radius: var(--r-lg, 18px);
    border: 2px solid rgba(8,112,33,.15);
    margin-bottom: 2rem;
    box-shadow: var(--shadow-brand-md, 0 4px 20px rgba(8,112,33,.12));
  }
  .resultado-supuesto-hero h1 {
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, #087021, #22c55e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: .5rem;
  }
  .resultado-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
  }
  .resultado-stat-card {
    background: white;
    border-radius: var(--r-md, 12px);
    padding: 1.2rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 2px solid;
    transition: var(--t);
  }
  .resultado-stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
  .resultado-stat-card.stat-verde  { border-color: rgba(8,112,33,.25); }
  .resultado-stat-card.stat-rojo   { border-color: rgba(220,53,69,.25); }
  .resultado-stat-card.stat-gris   { border-color: rgba(108,117,125,.2); }
  .resultado-stat-card.stat-naranja{ border-color: rgba(8,112,33,.2); }  /* verde en supuestos */
  .resultado-stat-num {
    font-size: 2.5rem;
    font-weight: 800;
    display: block;
    line-height: 1;
    margin-bottom: .3rem;
  }
  .stat-verde   .resultado-stat-num { color: var(--brand, #087021); }
  .stat-rojo    .resultado-stat-num { color: var(--danger-color, #dc3545); }
  .stat-gris    .resultado-stat-num { color: #6c757d; }
  .stat-naranja .resultado-stat-num { color: var(--brand, #087021); }    /* verde en supuestos */
  .resultado-stat-label { font-size: .85rem; color: #6c757d; font-weight: 600; }

  /* Accordion resultados supuesto */
  .accordion-supuesto .accordion-button {
    font-weight: 600;
    color: var(--brand, #087021);
    background: #f0fdf4;
    gap: .5rem;
  }
  .accordion-supuesto .accordion-button:not(.collapsed) {
    background: linear-gradient(135deg, #087021, #22c55e);
    color: white;
    box-shadow: none;
  }
  .accordion-supuesto .accordion-button:focus {
    box-shadow: 0 0 0 .2rem rgba(8,112,33,.2);
  }

  /* ── Info adicional supuesto ── */
  .info-adicional-supuesto {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border-top: 1px solid rgba(8,112,33,.12);
  }
  .info-label-supuesto {
    color: var(--brand, #087021);
    font-weight: 600;
    font-size: .85rem;
    text-transform: uppercase;
    letter-spacing: .5px;
    margin-bottom: .3rem;
    display: block;
  }
  .info-item-supuesto {
    border-left-color: var(--brand, #087021) !important;
  }
  .tema-badge-supuesto {
    background: linear-gradient(135deg, #087021, #22c55e);
    color: white;
    padding: .3rem .6rem;
    border-radius: var(--r-pill, 50px);
    font-size: .75rem;
    font-weight: 600;
  }

  /* ── Navbar fix móvil (quiz pages) ── */
  /* Nota: El navbar NO se aplasta en quiz; solo se reduce el padding del contenido quiz */
  @media (max-width: 576px) {
    .quiz-header { padding-top: 1rem; padding-bottom: 1rem; }
  }

  /* ── Responsive quiz ── */
  @media (max-width: 767px) {
    .quiz-header { padding: 1.2rem 0; margin-bottom: 1rem; }
    .quiz-info-container { grid-template-columns: 1fr; text-align: center; gap: .8rem; }
    .oposicion-info, .modo-examen-info { justify-self: center; }
    .oposicion-badge, .modo-badge { padding: .5rem 1rem; font-size: .85rem; gap: .4rem; }
    .pregunta-counter h4 { font-size: 1.5rem; }
    .pregunta-contenedor { min-height: 90px; padding: 1rem; }
    .pregunta-texto { font-size: 1rem; line-height: 1.5; }
    .respuestas-contenedor { max-height: 280px; padding: 1rem; }
    .preguntas-grid { grid-template-columns: repeat(auto-fill, minmax(50px,1fr)); gap: .6rem; }
    .pregunta-nav-btn { width: 50px; height: 50px; font-size: .9rem; }
    .navegacion-stats { flex-wrap: wrap; gap: .5rem; font-size: .75rem; }
    .navegacion-header { flex-direction: column; align-items: center; text-align: center; gap: .5rem; }
    .supuesto-info-card { padding: 1rem; }
    .resultado-stats-grid { grid-template-columns: 1fr 1fr; }
    .resultado-supuesto-hero h1 { font-size: 1.8rem; }
    .modo-examen-banner { font-size: .9rem; padding: .6rem 1.2rem; }
  }
  @media (max-width: 480px) {
    .quiz-header { padding: 1rem 0; margin-bottom: .8rem; }
    .pregunta-contenedor { min-height: 80px; padding: .8rem; }
    .pregunta-texto { font-size: .95rem; line-height: 1.4; }
    .respuestas-contenedor { max-height: 260px; padding: .8rem; }
    .feedback-container { min-height: 50px; margin: 0 .5rem .5rem; }
    .respuesta-feedback { font-size: 1rem; padding: .7rem; }
    .preguntas-navegacion { padding: .8rem; }
    .preguntas-grid { grid-template-columns: repeat(auto-fill, minmax(45px,1fr)); gap: .5rem; }
    .pregunta-nav-btn { width: 45px; height: 45px; font-size: .85rem; }
    .navegacion-stats { flex-direction: column; gap: .3rem; font-size: .7rem; }
    .resultado-stats-grid { grid-template-columns: 1fr 1fr; gap: .7rem; }
    .resultado-stat-num { font-size: 2rem; }
    .modo-examen-banner { font-size: .8rem; padding: .5rem 1rem; }
    .supuesto-info-card { padding: .8rem; margin-bottom: 1rem; }
    .supuesto-enunciado { font-size: .85rem; }
  }
  @media (max-width: 767px) {
    /* Solo se aplica border-radius y min-height al btn global, sin forzar width:100% */
    .btn { border-radius: var(--r-md,12px); transition: var(--t); min-height: 44px; }
  }

  /* ── Botones de acción quiz: siempre en una sola línea en móvil ── */
  .acciones-quiz-btns {
    flex-wrap: nowrap !important;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 2px;
  }
  .acciones-quiz-btns::-webkit-scrollbar { display: none; }
  .acciones-quiz-btns .btn {
    flex-shrink: 0;
    white-space: nowrap;
  }

  /* Móvil grande / tablet pequeña (≤767px): botones compactos */
  @media (max-width: 767px) {
    .acciones-quiz-btns {
      justify-content: flex-start;
      gap: .35rem !important;
    }
    .acciones-quiz-btns .btn {
      font-size: .8rem;
      padding: .45rem .7rem;
      min-height: 40px;
    }
  }

  /* Móvil pequeño (≤576px): botones más compactos */
  @media (max-width: 576px) {
    .acciones-quiz-btns .btn {
      font-size: .75rem;
      padding: .4rem .55rem;
      min-height: 38px;
    }
    .acciones-quiz-btns .btn .btn-texto { font-size: .72rem; }
  }

  /* Móvil muy pequeño (≤420px): solo iconos, sin texto */
  @media (max-width: 420px) {
    .acciones-quiz-btns .btn .btn-texto { display: none !important; }
    .acciones-quiz-btns .btn i { margin: 0 !important; }
    .acciones-quiz-btns .btn {
      padding: .45rem .6rem;
      min-width: 40px;
      justify-content: center;
    }
  }

  /* ================================================
     FIN SECCIÓN QUIZ UNIVERSAL
     ================================================ */

/* ====================================================================
   MEJORAS UX v4.1
   1. Botón X para colapsar/expandir el main-header (solo PC ≥769px)
   2. Columna central: items de temas como mini-cards en PC
   ==================================================================== */

/* ── Botón X dentro del header ── */
.main-header-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255,255,255,.12);
  border: 1.5px solid rgba(255,255,255,.28);
  color: rgba(255,255,255,.75);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .22s ease;
  z-index: 10;
  font-size: .95rem;
  flex-shrink: 0;
  padding: 0;
  line-height: 1;
}
.main-header-close:hover {
  background: rgba(255,255,255,.26);
  border-color: rgba(255,255,255,.7);
  color: #fff;
  transform: scale(1.1) rotate(90deg);
}
.main-header-close:focus { outline: none; }
.main-header-close:focus-visible {
  outline: 2px solid rgba(255,255,255,.6);
  outline-offset: 2px;
}

/* ── Botón para reabrir el header ── */
.main-header-reopen {
  display: none;
  width: 100%;
  padding: .65rem 1.8rem;
  background: linear-gradient(135deg, #0a0f1e 0%, #0b2416 50%, #0a1628 100%);
  border: 1.5px solid rgba(8,112,33,.35);
  border-radius: var(--radius-md, 16px);
  color: rgba(255,255,255,.75);
  font-size: .88rem;
  font-weight: 600;
  letter-spacing: .3px;
  cursor: pointer;
  margin-bottom: 1.5rem;
  transition: all .22s ease;
  box-shadow: 0 2px 10px rgba(0,0,0,.18);
  align-items: center;
  justify-content: center;
  gap: .5rem;
}
.main-header-reopen.is-visible { display: flex; }
.main-header-reopen:hover {
  color: #fff;
  border-color: rgba(34,197,94,.55);
  box-shadow: 0 4px 18px rgba(8,112,33,.22);
  transform: translateY(-1px);
}
.main-header-reopen:focus { outline: none; }
.main-header-reopen i { font-size: 1rem; }

/* En móvil: el botón X y el botón reabrir se ocultan */
@media (max-width: 768px) {
  .main-header-close  { display: none !important; }
  .main-header-reopen { display: none !important; }
}

/* ── Columna central: mini-cards en PC ≥769px ── */
@media (min-width: 769px) {

  /* Cuerpo del accordion: menos padding vertical */
  .central-column .accordion-modern .accordion-body {
    padding: .6rem .7rem .4rem;
  }

  /* Cada fila de tema → mini-card */
  .central-column .tema-link {
    padding: .85rem 1rem !important;
    border-radius: 9px !important;
    margin-bottom: .4rem;
    border: 1px solid rgba(8,112,33,.1) !important;
    border-bottom: 1px solid rgba(8,112,33,.1) !important;
    background: #fff !important;
    box-shadow: 0 1px 4px rgba(8,112,33,.05);
    transition: all .18s ease !important;
  }
  .central-column .tema-link:last-child { margin-bottom: 0; }
  .central-column .tema-link:hover {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%) !important;
    border-color: rgba(8,112,33,.2) !important;
    padding-left: 1.3rem !important;
    transform: translateX(3px) !important;
    box-shadow: 0 3px 10px rgba(8,112,33,.1) !important;
  }

  /* Texto del tema levemente más grande */
  .central-column .tema-link > a {
    font-size: .91rem !important;
    line-height: 1.45;
  }

  /* Botones de acción más cómodos */
  .central-column .tema-btn {
    width: 56px  !important;
    height: 34px !important;
    font-size: .8rem !important;
    border-radius: 7px !important;
  }

  /* Filas de supuestos individuales → misma mini-card */
  .central-column .supuesto-row-pc {
    padding: .8rem 1rem !important;
    border-radius: 9px;
    border: 1px solid rgba(8,112,33,.1);
    background: #fff;
    margin-bottom: .4rem;
    transition: all .18s ease;
    box-shadow: 0 1px 4px rgba(8,112,33,.05);
  }
  .central-column .supuesto-row-pc:hover {
    background: linear-gradient(135deg,#f0fdf4,#dcfce7);
    border-color: rgba(8,112,33,.2);
    transform: translateX(3px);
    box-shadow: 0 3px 10px rgba(8,112,33,.1);
  }
  .central-column .supuesto-row-pc span {
    font-size: .91rem !important;
  }
}