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

/* ================================================
   1. VARIABLES CSS GLOBALES
   ================================================ */
:root {
  /* Colores principales */
  --primary-color: #0d6efd;
  --primary-gradient: linear-gradient(45deg, #007bff, #00c6ff);
  --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: 120px;
--universal-navbar-bg: #ffffff;
--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);
}

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

body {
  background: var(--bg-gradient);
  background-color: var(--bg-light);
  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, rgba(248, 249, 250, 0.95) 0%, rgba(224, 247, 250, 0.95) 100%);
  backdrop-filter: blur(8px);
  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: var(--universal-navbar-bg);
  padding: 0;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--universal-navbar-height);
  border-bottom: 1px solid rgba(8, 112, 33, 0.1);
  backdrop-filter: blur(8px);
  transition: var(--transition);
}

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

.universal-nav-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--universal-brand-color);
  font-weight: 800;
  font-size: 1.5rem;
  transition: var(--transition);
}

.universal-nav-brand:hover {
  color: var(--universal-brand-hover);
  text-decoration: none;
  transform: translateY(-1px);
}

.universal-nav-brand i { margin-right: 8px; font-size: 1.8rem; }

.universal-nav-left {
  display: flex;
  align-items: center;
  gap: 30px;
}

.universal-nav-left a {
  text-decoration: none;
  color: #333;
  font-weight: 600;
  font-size: 16px;
  transition: var(--transition);
  padding: 8px 0;
  position: relative;
}

.universal-nav-left a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--universal-brand-color);
  transition: width 0.3s ease;
}

.universal-nav-left a:hover {
  color: var(--universal-brand-color);
  text-decoration: none;
}

.universal-nav-left a:hover::after { width: 100%; }

.universal-nav-right {
  display: flex;
  align-items: center;
  gap: 15px;
}

/* Botones del navbar universal */
.universal-btn {
  padding: 8px 20px;
  border: none;
  border-radius: var(--border-radius-sm);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  white-space: nowrap;
}

.universal-btn i { font-size: 1.1rem; }

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

.universal-btn-outline:hover {
  background: var(--universal-brand-color);
  color: white;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(8, 112, 33, 0.2);
}

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

.universal-btn-primary:hover {
  background: var(--universal-brand-hover);
  border-color: var(--universal-brand-hover);
  color: white;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(8, 112, 33, 0.3);
}

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

.universal-btn-danger:hover {
  background: #c82333;
  border-color: #c82333;
  color: white;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
}

/* ================================================
   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: linear-gradient(145deg, var(--primary-color), #0ea5e9) !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
   ================================================ */

/* Mobile (768px y menos) */
@media (max-width: 768px) {
  :root {
    --header-height-desktop: var(--header-height-mobile);
    --universal-navbar-height: 60px;
  }

  html { scroll-padding-top: var(--header-height-mobile); }
  body { padding-top: var(--header-height-mobile); }
  body::before { height: var(--header-height-mobile); }

  body > *:first-child:not(.top-right-buttons) {
    margin-top: var(--header-height-mobile);
  }

  .content-wrapper {
    min-height: calc(100vh - var(--header-height-mobile));
  }

  .top-right-buttons {
    right: 10px;
    left: 10px;
    top: 10px;
    justify-content: center;
    padding: 10px;
  }

  .top-right-buttons a.btn,
  .top-right-buttons button {
    min-width: 90px;
    font-size: 0.7rem;
    padding: 0.4rem 0.6rem;
    height: 34px;
  }

  .page-title-label {
    font-size: 2.5rem;
  }

  .pregunta-contenedor {
    min-height: 100px;
    max-height: 250px;
    padding: 1rem;
  }

  .pregunta-texto {
    font-size: 1rem;
  }

  .respuestas-contenedor {
    height: 250px;
    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 .icon-herramientas {
    font-size: 3rem !important;
  }

  .card-herramientas {
    margin-bottom: 1.5rem;
  }

  .card-herramientas:hover {
    transform: translateY(-3px) rotateX(1deg);
  }

  .card-herramientas .btn-herramientas {
    padding: 0.7rem 1.3rem !important;
    font-size: 0.9rem !important;
  }

  .universal-nav-container {
    padding: 0 15px;
  }

  .universal-nav-left {
    gap: 15px;
  }

  .universal-nav-left a {
    font-size: 14px;
  }

  .universal-nav-brand {
    font-size: 1.3rem;
  }

  .universal-nav-brand i {
    font-size: 1.6rem;
  }

  .universal-btn {
    padding: 6px 16px;
    font-size: 13px;
  }

  .universal-container {
    padding: 1.5rem;
  }

  .landing-nav-container {
    flex-direction: column;
    gap: 20px;
  }

  .landing-nav-left {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }

  .landing-nav-left a {
    margin-right: 0;
  }

  .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;
  }

  .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;
  }

  .esquema-landing-page .display-4 {
    font-size: 2rem;
  }

  .esquema-landing-page .result-image {
    max-height: 400px;
  }

  .esquema-landing-page .result-image-container {
    min-height: 250px;
  }

  .esquema-landing-page .hero-buttons {
    text-align: center;
  }

  .esquema-landing-page .hero-buttons .btn {
    width: 100%;
    max-width: 280px;
    margin-bottom: 10px;
  }

  .duplicates-page .page-title {
    font-size: 2rem;
  }

  .duplicates-page .page-title i {
    font-size: 2.5rem;
  }

  .duplicates-page .btn-action {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
}

/* Pequeño Mobile (480px y menos) */
@media (max-width: 480px) {
  .top-right-buttons {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 12px;
  }

  .top-right-buttons a.btn,
  .top-right-buttons button {
    min-width: 100%;
    height: 36px;
  }

  .page-title-label {
    font-size: 2rem;
  }

  .upload-zone {
    padding: 1.5rem 1rem;
  }

  .upload-zone i {
    font-size: 2rem !important;
  }

  .upload-zone h4 {
    font-size: 1.25rem;
  }

  .stats-circle {
    width: 80px;
    height: 80px;
    font-size: 1.5rem;
  }

  .card-herramientas .icon-herramientas {
    font-size: 2.5rem !important;
  }

  .card-herramientas .btn-herramientas {
    font-size: 0.85rem !important;
    padding: 0.65rem 1.1rem !important;
    letter-spacing: 0.5px !important;
  }

  .card-herramientas:hover {
    transform: translateY(-2px);
  }

  .universal-nav-container {
    flex-direction: column;
    height: auto;
    padding: 10px 15px;
  }

  .universal-navbar {
    height: auto;
    min-height: var(--universal-navbar-height);
  }

  body.universal-navbar-page {
    padding-top: calc(var(--universal-navbar-height) + 20px);
  }

  .universal-nav-left {
    order: 2;
    margin-top: 10px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .universal-nav-right {
    order: 1;
    margin-top: 8px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .universal-btn {
    margin: 2px;
    flex: 1;
    min-width: 120px;
    justify-content: center;
  }

  .universal-container {
    padding: 1rem;
  }

  .landing-hero {
    padding: 60px 0;
  }

  .landing-hero h1 {
    font-size: 1.75rem;
  }

  .landing-features {
    padding: 60px 0;
  }

  .landing-feature-card {
    padding: 25px;
  }

  .landing-cta {
    padding: 50px 0;
  }

  .landing-btn {
    padding: 10px 15px;
    font-size: 0.9rem;
  }

  .landing-btn-large {
    padding: 12px 25px;
    font-size: 0.95rem;
  }

  .landing-nav-right {
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }

  .landing-nav-right .landing-btn {
    text-align: center;
    width: 100%;
  }

  .register-container {
    padding: 1rem !important;
    margin-top: 15px !important;
  }

  .register-container .page-title-label {
    font-size: 2rem !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;
  }

  .esquema-landing-page .hero-icon {
    font-size: 3rem;
  }

  .esquema-landing-page .card-body {
    padding: 1rem;
  }

  .esquema-landing-page .example-text {
    font-size: 0.8rem;
  }
}

/* Large Mobile (992px y menos) */
@media (max-width: 992px) {
  .universal-nav-left {
    gap: 20px;
  }

  .universal-nav-left a {
    font-size: 15px;
  }

  .universal-nav-brand {
    font-size: 1.4rem;
  }
}

/* Tablet (576px y menos) */
@media (max-width: 576px) {
  .example-image-container {
    margin-bottom: 1rem;
  }

  .results-section {
    scroll-margin-top: 10px;
  }
}

/* ================================================
   FIN DEL CSS CONSOLIDADO
   ================================================ */
/* ================================================
   FIX NAVBAR UNIVERSAL EN MÓVILES
   ================================================ */

/* Actualizar variables base del navbar */
:root {
  /* Navbar universal - alturas actualizadas */
  --universal-navbar-height: 70px;
  --universal-navbar-height-mobile: 70px; /* Nueva variable para móviles */
  --universal-navbar-bg: #ffffff;
  --universal-brand-color: #087021;
  --universal-brand-hover: #065d1a;
}

/* ================================================
   NAVBAR UNIVERSAL BASE (Desktop)
   ================================================ */
.universal-navbar {
  background: var(--universal-navbar-bg);
  padding: 0;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--universal-navbar-height);
  border-bottom: 1px solid rgba(8, 112, 33, 0.1);
  backdrop-filter: blur(8px);
  transition: var(--transition);
}

/* Páginas con navbar universal - padding base */
body.universal-navbar-page {
  padding-top: var(--universal-navbar-height) !important;
}

/* Contenido universal con margen adicional */
.universal-content {
  padding-top: 0px;
  min-height: calc(100vh - var(--universal-navbar-height));
}

.modern-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 2rem;  /* Reducido el padding vertical */
  min-height: calc(100vh - var(--universal-navbar-height) - 40px);
}

/* ================================================
   RESPONSIVE MÓVILES - NAVBAR FIXES
   ================================================ */

/* Tablets y móviles grandes (768px y menos) */
@media (max-width: 768px) {
  :root {
    --universal-navbar-height: var(--universal-navbar-height-mobile);
  }

  /* Navbar más alto en móviles */
  .universal-navbar {
    height: var(--universal-navbar-height-mobile);
    min-height: var(--universal-navbar-height-mobile);
  }

  /* Contenedor del navbar - layout vertical */
  .universal-nav-container {
    flex-direction: column;
    height: 100%;
    padding: 10px 15px;
    justify-content: center;
    gap: 8px;
  }

  /* Marca del navbar */
  .universal-nav-brand {
    font-size: 1.3rem;
    order: 1;
  }

  .universal-nav-brand i {
    font-size: 1.5rem;
  }

  /* Enlaces de navegación */
  .universal-nav-left {
    order: 3;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
    margin: 0;
  }

  .universal-nav-left a {
    font-size: 13px;
    padding: 4px 0;
  }

  /* Botones del navbar */
  .universal-nav-right {
    order: 2;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
    margin: 0;
  }

  /* Ajuste de padding para páginas con navbar universal */
  body.universal-navbar-page {
    padding-top: var(--universal-navbar-height-mobile) !important;
  }

  /* Contenido universal con altura ajustada */
  .universal-content {
  min-height: calc(100vh - var(--universal-navbar-height-mobile));
  padding-top: 5px;
}

  /* Container moderno ajustado */
  .modern-container {
    padding: 1.5rem;
    margin-top: 0;
    min-height: calc(100vh - var(--universal-navbar-height-mobile) - 30px);
  }

  /* Botones universales más pequeños */
  .universal-btn {
    padding: 6px 12px;
    font-size: 12px;
    min-width: 80px;
    white-space: nowrap;
  }

  .universal-btn i {
    font-size: 1rem;
  }
}

/* Móviles pequeños (576px y menos) */
@media (max-width: 576px) {
  :root {
    --universal-navbar-height-mobile: 140px;
  }

  .universal-navbar {
    height: var(--universal-navbar-height-mobile);
    min-height: var(--universal-navbar-height-mobile);
  }

  .universal-nav-container {
    padding: 8px 10px;
    gap: 6px;
  }

  .universal-nav-brand {
    font-size: 1.2rem;
  }

  .universal-nav-brand i {
    font-size: 1.4rem;
  }

  .universal-nav-left a {
    font-size: 12px;
  }

  .universal-btn {
    padding: 5px 10px;
    font-size: 11px;
    min-width: 70px;
  }

  /* Ajuste de padding */
  body.universal-navbar-page {
    padding-top: var(--universal-navbar-height-mobile) !important;
  }

  .universal-content {
    min-height: calc(100vh - var(--universal-navbar-height-mobile));
    padding-top: 10px;
  }

  .modern-container {
    padding: 1rem;
    min-height: calc(100vh - var(--universal-navbar-height-mobile) - 20px);
  }
}

/* Móviles muy pequeños (480px y menos) */
@media (max-width: 480px) {
  :root {
    --universal-navbar-height-mobile: 160px;
  }

  .universal-navbar {
    height: var(--universal-navbar-height-mobile);
    min-height: var(--universal-navbar-height-mobile);
  }

  .universal-nav-container {
    padding: 6px 8px;
    gap: 4px;
  }

  .universal-nav-left {
    gap: 10px;
  }

  .universal-nav-left a {
    font-size: 11px;
  }

  .universal-nav-right {
    gap: 6px;
  }

  .universal-btn {
    padding: 4px 8px;
    font-size: 10px;
    min-width: 60px;
  }

  /* Botones en dos filas si es necesario */
  .universal-nav-right {
    flex-direction: column;
    width: 100%;
  }

  .universal-nav-right .universal-btn {
    width: 100%;
    max-width: 200px;
    margin: 1px 0;
  }

  /* Ajuste de padding */
  body.universal-navbar-page {
    padding-top: var(--universal-navbar-height-mobile) !important;
  }

  .universal-content {
    min-height: calc(100vh - var(--universal-navbar-height-mobile));
    padding-top: 8px;
  }

  .modern-container {
    padding: 0.8rem;
    min-height: calc(100vh - var(--universal-navbar-height-mobile) - 16px);
  }
}

/* ================================================
   PROTECCIÓN PARA SCROLL Y CONTENIDO
   ================================================ */

/* Ajuste de scroll padding para móviles */
@media (max-width: 768px) {
  html {
    scroll-padding-top: var(--universal-navbar-height-mobile);
  }
}

/* Asegurar que el primer elemento tenga margen */
body.universal-navbar-page > *:first-child:not(.universal-navbar) {
  margin-top: 0 !important;
  padding-top: 0 !important;
}

/* Protección adicional para contenido que pueda quedar oculto */
.universal-navbar-page .main-header,
.universal-navbar-page .page-title-label,
.universal-navbar-page .container:first-of-type {
  position: relative;
  z-index: 1;
}

/* ================================================
   ORIENTACIÓN LANDSCAPE EN MÓVILES
   ================================================ */
@media (max-width: 767px) and (orientation: landscape) {
  :root {
    --universal-navbar-height-mobile: 100px;
  }

  .universal-navbar {
    height: var(--universal-navbar-height-mobile);
  }

  .universal-nav-container {
    flex-direction: row;
    justify-content: space-between;
    padding: 5px 15px;
  }

  .universal-nav-left {
    order: 2;
    gap: 20px;
  }

  .universal-nav-right {
    order: 3;
    flex-direction: row;
    gap: 8px;
  }

  .universal-btn {
    padding: 4px 10px;
    font-size: 11px;
  }

  body.universal-navbar-page {
    padding-top: var(--universal-navbar-height-mobile) !important;
  }

  .modern-container {
    padding: 1rem;
    min-height: calc(100vh - var(--universal-navbar-height-mobile) - 20px);
  }
}

/* ================================================
   DEBUGGING Y VERIFICACIÓN
   ================================================ */

/* Solo para debugging - remover en producción */
/*
.universal-navbar::after {
  content: 'Navbar Height: ' attr(style);
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  background: red;
  color: white;
  padding: 2px 8px;
  font-size: 10px;
  border-radius: 4px;
  z-index: 9999;
}
*/