/* ========================================
   VARIABLES DE TEMA (Optimizado para Blanco + Morado en Claro)
   ======================================== */
:root {
  /* Tema Claro: Blanco Puro con Morado Vibrante */
  --background: 0 0% 100%;      /* Blanco puro */
  --foreground: 240 10% 3.9%;   /* Negro/gris muy oscuro para contraste alto */
  --card: 0 0% 100%;            /* Blanco puro para cards */
  --border: 240 5.3% 91.4%;     /* Gris muy claro (casi blanco) para bordes */
  --primary: 270 80% 50%;       /* Morado vibrante e intenso */
  --primary-foreground: 0 0% 100%; /* Blanco puro para texto en primary */
  --accent: 0 0% 98%;           /* Blanco/gris casi invisible para accents */
  --accent-foreground: 240 10% 3.9%; /* Negro para texto en accent */
}

[data-theme="dark"] {
  /* Tema Oscuro: Mantiene el original (gris oscuro con morado claro) */
  --background: 222.2 84% 4.9%; /* Gris oscuro */
  --foreground: 210 40% 98%;    /* Blanco/gris claro */
  --card: 222.2 84% 4.9%;       /* Gris oscuro para cards */
  --border: 217.2 32.6% 17.5%;  /* Gris más oscuro para bordes */
  --primary: 270 70% 65%;       /* Morado más claro en dark */
  --primary-foreground: 0 0% 98%; /* Blanco */
  --accent: 217.2 32.6% 17.5%;  /* Gris oscuro para accents */
  --accent-foreground: 210 40% 98%; /* Blanco */
}

/* ========================================
   ESTILOS BASE (Mejorados para Blanco/Morado)
   ======================================== */
html {
  color-scheme: light dark;
  scroll-behavior: smooth;
}

body {
  background-color: hsl(var(--background)); /* Blanco puro en claro */
  color: hsl(var(--foreground)); /* Texto oscuro en claro */
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  min-height: 100vh;
}

/* Reset para Tailwind con énfasis en blanco/morado */
@layer base {
  h1 { @apply text-4xl font-bold text-foreground; }
  h2 { @apply text-3xl font-bold text-foreground; }
  h3 { @apply text-2xl font-bold text-foreground; }
  
  /* Enlaces con morado en claro */
  a { 
    @apply text-primary hover:text-primary/80 transition-colors; 
  }
}

/* ========================================
   TOAST NOTIFICATIONS (Acentos morados en claro)
   ======================================== */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 400px;
}

.toast {
  padding: 12px 16px;
  border-radius: 8px;
  color: white;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transform: translateX(100%);
  transition: transform 0.3s ease, opacity 0.3s ease;
  opacity: 0;
  min-width: 300px;
  word-wrap: break-word;
  border-left: 4px solid hsl(var(--primary)); /* Borde morado en todos los toasts */
}

.toast.show {
  transform: translateX(0);
  opacity: 1;
}

.toast.success {
  background: hsl(142, 71%, 45%); /* Verde */
}

.toast.error {
  background: hsl(0, 84%, 60%); /* Rojo */
}

.toast.info {
  background: hsl(var(--primary)); /* Morado vibrante para info */
}

.toast.warning {
  background: hsl(45, 100%, 55%); /* Amarillo */
}

/* ========================================
   NAVBAR (Blanca con Morado en Claro)
   ======================================== */
nav {
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background-color: hsl(var(--background)) !important; /* Blanco puro en claro */
  border-bottom-color: hsl(var(--border)); /* Borde gris claro */
}

nav a[href*="index.html"] {
  color: hsl(var(--primary)) !important; /* Morado en "Inicio" */
}

#areas-dropdown-toggle {
  color: hsl(var(--primary)) !important; /* Morado en "Áreas" */
}

#areas-dropdown-menu {
  background-color: hsl(var(--card)) !important; /* Blanco en claro */
  border-color: hsl(var(--border)); /* Borde gris claro */
}

#areas-dropdown-menu a {
  color: hsl(var(--foreground)) !important; /* Texto oscuro */
  background-color: hsl(var(--accent)) !important; /* Hover casi blanco */
}

#areas-dropdown-menu a:hover {
  background-color: hsl(var(--primary)/0.1) !important; /* Hover con morado sutil */
  color: hsl(var(--primary)) !important;
}

/* Logo con gradiente morado más intenso */
nav .bg-gradient-to-br {
  background: linear-gradient(to bottom right, hsl(var(--primary)), hsl(270 80% 40%)) !important;
}

/* ========================================
   CARRUSEL (Blanco con Morado en Claro - Solo index.html)
   ======================================== */
#carousel {
  transition: opacity 1s ease;
  background-color: hsl(var(--background)); /* Blanco */
}

.carousel-slide {
  transition: opacity 1s ease-in-out;
  opacity: 0;
  background: linear-gradient(135deg, hsl(var(--background)), hsl(var(--primary)/0.05)); /* Gradiente sutil morado */
}

.carousel-slide.active {
  opacity: 1;
}

.carousel-indicator.active {
  background-color: hsl(var(--primary)) !important; /* Indicadores morados */
}

/* ========================================
   CARDS Y SECCIONES (Blancas con Morado en Hover)
   ======================================== */
.card {
  background-color: hsl(var(--card)) !important; /* Blanco puro */
  border-color: hsl(var(--border)); /* Borde gris claro */
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(147, 51, 234, 0.15); /* Sombra morada sutil (hsl(270 80% 50%)) */
  border-color: hsl(var(--primary)); /* Borde morado en hover */
}

/* Cards de áreas con gradiente morado */
.area-card {
  background: linear-gradient(to bottom, hsl(var(--card)), hsl(var(--primary)/0.02)) !important; /* Gradiente blanco-morado sutil */
}

.area-card:hover {
  border-color: hsl(var(--primary)) !important;
  box-shadow: 0 16px 40px rgba(147, 51, 234, 0.2) !important; /* Sombra morada */
}

/* Hero y secciones con acentos morados */
.hero-section {
  background: linear-gradient(135deg, hsl(var(--primary)/0.08), hsl(var(--background))); /* Gradiente morado-blanco */
  border-color: hsl(var(--primary)/0.2);
}

.practice-section, .content-section {
  background-color: hsl(var(--card)) !important; /* Blanco */
  border-color: hsl(var(--border));
}

.practice-btn, button[type="submit"] {
  background-color: hsl(var(--primary)) !important; /* Morado vibrante */
  border-color: hsl(var(--primary));
}

.practice-btn:hover, button[type="submit"]:hover {
  background-color: hsl(270 80% 45%) !important; /* Morado más oscuro en hover */
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(147, 51, 234, 0.3) !important; /* Sombra morada */
}

/* ========================================
   MODAL DE SIMULACRO (Blanco con Morado en Claro)
   ======================================== */
.test-modal-overlay {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
}

.test-modal-content {
  background-color: hsl(var(--card)) !important; /* Blanco */
  border-color: hsl(var(--border));
  box-shadow: 0 20px 40px rgba(147, 51, 234, 0.2) !important; /* Sombra morada */
}

.question-card {
  background-color: hsl(var(--card)) !important; /* Blanco */
  border-color: hsl(var(--border));
}

.question-card:hover {
  border-color: hsl(var(--primary)) !important; /* Morado en hover */
}

.option {
  background-color: hsl(var(--background)) !important; /* Blanco */
  border-color: hsl(var(--border));
}

.option:hover {
  border-color: hsl(var(--primary)) !important; /* Morado */
  background-color: hsl(var(--primary)/0.05) !important; /* Fondo morado sutil */
}

.option.selected {
  background-color: hsl(var(--primary)) !important; /* Morado lleno */
  border-color: hsl(var(--primary));
  color: hsl(var(--primary-foreground)) !important;
}

.progress-fill {
  background: linear-gradient(to right, hsl(var(--primary)), hsl(270 80% 40%)) !important; /* Gradiente morado */
}

/* Círculo de score en resultados */
.score-circle {
  background: conic-gradient(hsl(var(--primary)) 0deg var(--score-deg), hsl(var(--accent)) var(--score-deg) 360deg) !important;
}

.score-circle::after {
  background-color: hsl(var(--background)) !important; /* Blanco en centro */
  color: hsl(var(--primary)) !important; /* Morado en texto de score */
}

/* ========================================
   FORMULARIOS (Morado en Inputs y Botones)
   ======================================== */
.form-input {
  background-color: hsl(var(--background)) !important; /* Blanco */
  border-color: hsl(var(--border));
  color: hsl(var(--foreground));
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus {
  outline: none;
  border-color: hsl(var(--primary)) !important; /* Morado en focus */
  box-shadow: 0 0 0 3px hsl(var(--primary)/0.2) !important; /* Glow morado */
}

select.form-input option {
  background-color: hsl(var(--background)) !important; /* Blanco en opciones */
  color: hsl(var(--foreground)) !important;
}

/* ========================================
   FOOTER (Blanco con Morado Sutil)
   ======================================== */
footer {
  backdrop-filter: blur(10px);
  background-color: hsl(var(--card)/0.8) !important; /* Blanco translúcido */
  border-top-color: hsl(var(--border));
}

/* ========================================
   ANIMACIONES Y RESPONSIVE (Sin Cambios Mayores)
   ======================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

@media (max-width: 768px) {
  .toast {
    min-width: 250px;
    right: 10px;
    left: 10px;
    margin: 0 auto;
  }

  .test-modal-content {
    margin: 1rem;
    max-height: 95vh;
  }

  nav {
    background-color: hsl(var(--background)) !important; /* Blanco en mobile claro */
  }
}

/* ========================================
   THEME TOGGLE BUTTON (Mejorado con Iconos)
   ======================================== */
#theme-toggle {
  position: relative;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background-color: hsl(var(--card));
  border: 2px solid hsl(var(--border));
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#theme-toggle:hover {
  border-color: hsl(var(--primary));
  box-shadow: 0 4px 12px rgba(147, 51, 234, 0.2);
  transform: scale(1.05);
}

#theme-toggle:active {
  transform: scale(0.95);
}

/* Iconos del tema (sol y luna) */
.theme-icon {
  position: absolute;
  width: 1.5rem;
  height: 1.5rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Icono de sol (tema claro) */
.theme-icon.sun-icon {
  color: hsl(45, 100%, 50%);
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

[data-theme="dark"] .theme-icon.sun-icon {
  opacity: 0;
  transform: rotate(180deg) scale(0);
}

/* Icono de luna (tema oscuro) */
.theme-icon.moon-icon {
  color: hsl(220, 80%, 70%);
  opacity: 0;
  transform: rotate(-180deg) scale(0);
}

[data-theme="dark"] .theme-icon.moon-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* Soporte para imágenes PNG personalizadas */
.theme-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Animación de rotación al cambiar tema */
#theme-toggle.rotating {
  animation: rotateTheme 0.5s ease;
}

@keyframes rotateTheme {
  0% { transform: rotate(0deg) scale(1); }
  50% { transform: rotate(180deg) scale(0.8); }
  100% { transform: rotate(360deg) scale(1); }
}

/* Accesibilidad: Reduced motion y focus */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  #theme-toggle, .theme-icon {
    transition: none !important;
  }
}

*:focus-visible {
  outline: 2px solid hsl(var(--primary)) !important; /* Morado en focus */
  outline-offset: 2px;
}

/* ========================================
   ESTILOS ESPECÍFICOS PARA PÁGINAS (Blanco/Morado)
   ======================================== */
.area-hero {
  background: linear-gradient(135deg, hsl(var(--primary)/0.1), hsl(var(--background))); /* Morado-blanco */
  border-color: hsl(var(--primary)/0.3);
}

.content-section ul li {
  color: hsl(var(--foreground)); /* Texto oscuro en listas blancas */
}

.content-section ul li::marker {
  color: hsl(var(--primary)); /* Marcadores morados en listas */
}