/* =========================
   MYTHICAPP - SISTEMA DE DISEÑO
   ========================= */

:root {
  /* ESPACIADO - Sistema de espaciado consistente */
  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 20px;
  --space-5: 28px;
  
  /* LAYOUT - Alturas fijas de componentes */
  --nav-h: 60px;
  --footer-h: 48px;
  
  /* EFECTOS - Radios, blur y transiciones */
  --radius: 12px;
  --radius-large: 20px;
  --blur: blur(20px);
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  
  /* COLORES MODO CLARO - WCAG AA COMPLIANT */
  --bg-primary: #faf9f7;
  --bg-secondary: #f5f2ee;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --bg-surface: rgba(242, 242, 247, 0.9);
  
  --text-primary: #1d1d1f;
  --text-secondary: #515154; /* MEJORADO: Ratio 7:1 (antes 4.5:1) */
  --text-tertiary: #6e6e73; /* MEJORADO: Ratio 4.6:1 (antes 3.2:1) */
  
  /* Acento dorado para modo claro */
  --accent: #b8860b;
  --accent-light: #daa520;
  --accent-dark: #996515;
  
  --border: rgba(0, 0, 0, 0.08);
  --shadow: rgba(0, 0, 0, 0.12);
  
  /* Estados */
  --success: #30a14e; /* MEJORADO: Contraste mejorado */
  --error: #d73a49; /* MEJORADO: Contraste mejorado */
}

/* COLORES MODO OSCURO - WCAG AA COMPLIANT */
[data-theme="dark"] {
  --bg-primary: #0a0a0b;
  --bg-secondary: #16161a;
  --bg-glass: rgba(22, 22, 26, 0.92);
  --bg-surface: rgba(28, 28, 32, 0.95);
  
  --text-primary: #f5f5f7;
  --text-secondary: #c9c9ce; /* MEJORADO: Ratio 7:1 */
  --text-tertiary: #a1a1a6; /* MEJORADO: Ratio 4.6:1 */
  
  /* Dorado más brillante y vibrante para modo oscuro */
  --accent: #ffd700;
  --accent-light: #ffed4e;
  --accent-dark: #daa520;
  
  --border: rgba(255, 255, 255, 0.12);
  --shadow: rgba(0, 0, 0, 0.5);
  
  --success: #3fb950;
  --error: #ff6b6b;
}

/* =========================
   RESET Y BASE
   ========================= */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", system-ui, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.47059;
  font-size: 17px;
  min-height: 100vh;
  overflow-x: hidden;
  padding-bottom: var(--footer-h);
  transition: background 0.3s ease, color 0.3s ease;
}

/* OVERLAY DE GRADIENTE DE FONDO */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(184, 134, 11, 0.1), transparent),
    radial-gradient(ellipse 60% 80% at 50% 120%, rgba(184, 134, 11, 0.06), transparent);
  pointer-events: none;
  z-index: -1;
  opacity: 1;
  transition: opacity 0.3s ease;
}

[data-theme="dark"] body::before {
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(255, 215, 0, 0.15), transparent),
    radial-gradient(ellipse 60% 80% at 50% 120%, rgba(255, 215, 0, 0.08), transparent);
}

/* =========================
   TIPOGRAFÍA
   ========================= */

.display {
  font-size: 64px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
}

.headline {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.125;
  letter-spacing: -0.003em;
}

.body {
  font-size: 17px;
  line-height: 1.47059;
  letter-spacing: -0.022em;
}

.subhead {
  font-size: 15px;
  line-height: 1.4;
  letter-spacing: -0.016em;
  color: var(--text-secondary);
}

.caption {
  font-size: 13px;
  line-height: 1.38462;
  letter-spacing: -0.008em;
  color: var(--text-tertiary);
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 22px;
}

/* =========================
   ACCESIBILIDAD
   ========================= */

.visually-hidden {
  position: absolute !important;
  height: 1px;
  width: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
  border: 0;
  padding: 0;
  margin: -1px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  z-index: 9999;
  padding: 12px 20px;
  background: var(--bg-glass);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid var(--accent);
}

.skip-link:focus {
  left: 16px;
  top: 16px;
  width: auto;
  height: auto;
}

/* =========================
   NAVEGACIÓN
   ========================= */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--nav-h);
  background: var(--bg-glass);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  max-width: 980px;
  margin: 0 auto;
  padding: 0 22px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  transition: var(--transition);
}

.logo:hover {
  opacity: 0.8;
}

.logo-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  box-shadow: 0 4px 16px rgba(255, 215, 0, 0.35);
  padding: 4px;
  transition: var(--transition);
}

[data-theme="dark"] .logo-icon {
  box-shadow: 
    0 4px 20px rgba(255, 215, 0, 0.5),
    0 0 40px rgba(255, 215, 0, 0.2);
}

.logo:hover .logo-icon {
  transform: scale(1.08);
  box-shadow: 0 6px 20px rgba(255, 215, 0, 0.45);
}

[data-theme="dark"] .logo:hover .logo-icon {
  box-shadow: 
    0 6px 24px rgba(255, 215, 0, 0.6),
    0 0 50px rgba(255, 215, 0, 0.3);
}

.logo-medusa {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.logo-text {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-links {
  display: flex;
  gap: 4px;
  align-items: center;
}

.nav-link {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
}

.nav-link:hover {
  background: var(--bg-surface);
}

.nav-link.active {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  color: #000;
  font-weight: 600;
}

[data-theme="dark"] .nav-link.active {
  color: #000;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  z-index: 1001;
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 2px;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-primary);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: var(--transition);
  position: relative;
}

.theme-toggle:hover {
  background: var(--bg-glass);
  border-color: var(--accent);
  transform: scale(1.05);
}

.sun-icon,
.moon-icon {
  position: absolute;
  transition: all 0.3s ease;
}

.sun-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.moon-icon {
  opacity: 0;
  transform: rotate(90deg) scale(0);
}

[data-theme="dark"] .sun-icon {
  opacity: 0;
  transform: rotate(-90deg) scale(0);
}

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

/* =========================
   MAIN - CONTENIDO PRINCIPAL
   ========================= */

.main {
  padding-top: var(--nav-h);
}

.section {
  display: block;
  padding: 20px 0;
}

[hidden] {
  display: none !important;
}

/* =========================
   HOME - PÁGINA DE INICIO
   ========================= */

#home {
  min-height: calc(100vh - var(--nav-h) - var(--footer-h));
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  padding: 40px 0;
}

.hero {
  text-align: center;
  width: 100%;
  max-width: 800px;
  padding: 0;
}

.hero-image {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.medusa-icon {
  width: 280px;
  height: 280px;
  object-fit: contain;
  filter: drop-shadow(0 10px 30px rgba(255, 215, 0, 0.25));
  transition: var(--transition);
}

[data-theme="dark"] .medusa-icon {
  filter: drop-shadow(0 12px 36px rgba(255, 215, 0, 0.4));
}

.medusa-icon:hover {
  transform: scale(1.06) rotate(-3deg);
  filter: drop-shadow(0 14px 40px rgba(255, 215, 0, 0.35));
}

[data-theme="dark"] .medusa-icon:hover {
  filter: drop-shadow(0 16px 48px rgba(255, 215, 0, 0.55));
}

/* =========================
   TÍTULO HERO CON TEXTURA METÁLICA
   ========================= */

.hero-title {
  position: relative;
  font-weight: 900;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  margin-bottom: 16px;
  
  background: linear-gradient(
    135deg,
    #b8860b 0%,
    #daa520 15%,
    #f0e68c 30%,
    #daa520 50%,
    #b8860b 65%,
    #8b7355 80%,
    #b8860b 100%
  );
  background-size: 200% auto;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  
  filter: drop-shadow(2px 4px 8px rgba(139, 115, 85, 0.3));
  animation: bronze-shine 4s ease-in-out infinite;
}

@keyframes bronze-shine {
  0%, 100% {
    background-position: 0% center;
  }
  50% {
    background-position: 100% center;
  }
}

[data-theme="dark"] .hero-title {
  background: linear-gradient(
    135deg,
    #ffed4e 0%,
    #ffd700 10%,
    #ffffff 20%,
    #ffed4e 30%,
    #ffd700 40%,
    #daa520 50%,
    #ffd700 60%,
    #ffed4e 70%,
    #ffffff 80%,
    #ffd700 90%,
    #ffed4e 100%
  );
  background-size: 200% auto;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  
  animation: gold-shine 3s ease-in-out infinite;
  
  filter:
    drop-shadow(0 0 20px rgba(255, 215, 0, 0.6))
    drop-shadow(0 0 40px rgba(255, 215, 0, 0.4))
    drop-shadow(0 4px 12px rgba(0, 0, 0, 0.5))
    contrast(1.2)
    brightness(1.3);
  
  -webkit-text-stroke: 1px rgba(255, 215, 0, 0.15);
}

@keyframes gold-shine {
  0%, 100% {
    background-position: 0% center;
    filter:
      drop-shadow(0 0 20px rgba(255, 215, 0, 0.6))
      drop-shadow(0 0 40px rgba(255, 215, 0, 0.4))
      drop-shadow(0 4px 12px rgba(0, 0, 0, 0.5))
      contrast(1.2)
      brightness(1.3);
  }
  50% {
    background-position: 100% center;
    filter:
      drop-shadow(0 0 30px rgba(255, 215, 0, 0.8))
      drop-shadow(0 0 60px rgba(255, 215, 0, 0.5))
      drop-shadow(0 4px 12px rgba(0, 0, 0, 0.5))
      contrast(1.3)
      brightness(1.4);
  }
}

.hero-tagline {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}

[data-theme="dark"] .hero-tagline {
  color: var(--accent-light);
  text-shadow: 0 2px 8px rgba(255, 215, 0, 0.3);
}

.hero-subtitle {
  max-width: 620px;
  margin: 0 auto 32px;
  color: var(--text-secondary);
  font-size: 18px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* =========================
   BOTONES
   ========================= */

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  color: #000;
  border: none;
  padding: 16px 32px;
  border-radius: var(--radius);
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(184, 134, 11, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

[data-theme="dark"] .btn-primary {
  background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
  box-shadow: 
    0 4px 20px rgba(255, 215, 0, 0.4),
    0 0 30px rgba(255, 215, 0, 0.2);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(184, 134, 11, 0.45);
}

[data-theme="dark"] .btn-primary:hover {
  box-shadow: 
    0 8px 36px rgba(255, 215, 0, 0.6),
    0 0 50px rgba(255, 215, 0, 0.3);
}

.btn-primary:active {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(184, 134, 11, 0.3);
}

[data-theme="dark"] .btn-primary:active {
  box-shadow: 0 4px 20px rgba(255, 215, 0, 0.4);
}

.btn-large {
  padding: 18px 36px;
  font-size: 19px;
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 2px solid var(--border);
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 17px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.btn-secondary:hover {
  background: var(--bg-glass);
  border-color: var(--accent);
  transform: translateY(-1px);
}

.btn-secondary:active {
  transform: translateY(0);
}

.btn-secondary:disabled,
.btn-secondary[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* =========================
   ESTADOS DE FOCO (ACCESIBILIDAD)
   ========================= */

.nav-link:focus-visible,
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.tab:focus-visible,
.option:focus-visible,
.expand-button:focus-visible,
.theme-toggle:focus-visible,
.mobile-menu-toggle:focus-visible,
.search-box:focus-visible,
.logo:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* =========================
   CARDS
   ========================= */

.card {
  background: var(--bg-glass);
  backdrop-filter: var(--blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
  padding: 28px;
  margin: 16px 0;
}

/* =========================
   BADGE DE PUNTUACIÓN
   ========================= */

.score-badge {
  background: var(--bg-glass);
  backdrop-filter: var(--blur);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 24px;
  display: inline-block;
  margin-bottom: 24px;
}

.score-label {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-bottom: 4px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.score-value {
  font-size: 28px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* =========================
   QUIZ
   ========================= */

.quiz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.progress-container {
  flex: 1;
  min-width: 200px;
}

.progress-bar {
  height: 8px;
  background: var(--bg-surface);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-light) 100%);
  border-radius: 4px;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-text {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.question-card {
  margin-bottom: 20px;
}

.question-meta {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  color: #000;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

[data-theme="dark"] .question-meta {
  box-shadow: 0 2px 8px rgba(255, 215, 0, 0.3);
}

.question-text {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.options {
  display: grid;
  gap: 12px;
}

.option {
  background: var(--bg-surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
  font-size: 17px;
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text-primary);
  font-weight: 500;
  min-height: 64px; /* MEJORA: Target size para touch */
}

[data-theme="dark"] .option {
  background: rgba(28, 28, 32, 0.98);
  border-color: rgba(255, 215, 0, 0.2);
  color: #f5f5f7;
}

.option:hover:not(.disabled):not([aria-disabled="true"]) {
  background: var(--bg-glass);
  border-color: var(--accent);
  transform: translateY(-2px);
}

[data-theme="dark"] .option:hover:not(.disabled):not([aria-disabled="true"]) {
  background: rgba(40, 40, 45, 0.98);
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(255, 215, 0, 0.2);
}

.option-number {
  width: 32px;
  height: 32px;
  background: var(--accent);
  color: #000;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
  flex-shrink: 0;
}

[data-theme="dark"] .option-number {
  background: linear-gradient(135deg, #ffd700, #ffed4e);
  box-shadow: 0 2px 8px rgba(255, 215, 0, 0.4);
}

.option.correct {
  background: rgba(48, 161, 78, 0.15);
  border-color: var(--success);
  color: var(--text-primary);
}

[data-theme="dark"] .option.correct {
  background: rgba(63, 185, 80, 0.2);
  border-color: var(--success);
  color: #f5f5f7;
}

.option.correct .option-number {
  background: var(--success);
  color: #fff;
}

.option.incorrect {
  background: rgba(215, 58, 73, 0.15);
  border-color: var(--error);
  color: var(--text-primary);
}

[data-theme="dark"] .option.incorrect {
  background: rgba(255, 107, 107, 0.2);
  border-color: var(--error);
  color: #f5f5f7;
}

.option.incorrect .option-number {
  background: var(--error);
  color: #fff;
}

.option.disabled,
.option[aria-disabled="true"] {
  pointer-events: none;
  opacity: 0.8;
}

/* MEJORA: Contenedor de feedback */
.feedback-container {
  min-height: 56px;
  margin-top: 16px;
}

.feedback {
  padding: 16px 20px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  line-height: 1.5;
}

.feedback-icon {
  font-size: 20px;
  flex-shrink: 0;
}

.feedback.correct {
  background: rgba(48, 161, 78, 0.15);
  color: var(--success);
  border: 2px solid var(--success);
}

[data-theme="dark"] .feedback.correct {
  background: rgba(63, 185, 80, 0.2);
  color: #3fb950;
  border-color: #3fb950;
}

.feedback.incorrect {
  background: rgba(215, 58, 73, 0.15);
  color: var(--error);
  border: 2px solid var(--error);
}

[data-theme="dark"] .feedback.incorrect {
  background: rgba(255, 107, 107, 0.2);
  color: #ff6b6b;
  border-color: #ff6b6b;
}

.quiz-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 16px;
}

/* =========================
   TABS
   ========================= */

.tabs {
  display: flex;
  background: var(--bg-surface);
  border-radius: var(--radius);
  padding: 4px;
  margin-bottom: 18px;
  overflow-x: auto;
}

.tab {
  background: none;
  border: none;
  padding: 10px 16px;
  border-radius: 10px;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  min-height: 44px; /* MEJORA: Touch target size */
}

.tab[aria-selected="true"] {
  background: var(--bg-glass);
  color: var(--accent);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .tab[aria-selected="true"] {
  color: var(--accent-light);
  box-shadow: 0 2px 12px rgba(255, 215, 0, 0.2);
}

.tab:hover {
  color: var(--accent);
}

/* =========================
   BÚSQUEDA
   ========================= */

.search-box {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: 15px;
  margin-bottom: 20px;
  background: var(--bg-surface);
  color: var(--text-primary);
  transition: var(--transition);
  min-height: 48px; /* MEJORA: Touch target */
}

.search-box:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-glass);
  box-shadow: 0 0 0 3px rgba(184, 134, 11, 0.1);
}

[data-theme="dark"] .search-box:focus {
  box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.2);
}

.search-box::placeholder {
  color: var(--text-tertiary);
}

/* =========================
   GRID DE CONTENIDO
   ========================= */

.content-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* MEJORA: Indicador de carga */
.content-grid[aria-busy="true"] {
  opacity: 0.6;
  pointer-events: none;
  position: relative;
}

.content-grid[aria-busy="true"]::after {
  content: 'Cargando...';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--bg-glass);
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  color: var(--text-primary);
  box-shadow: 0 4px 16px var(--shadow);
}

.content-item {
  background: var(--bg-glass);
  backdrop-filter: var(--blur);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: var(--transition);
}

.content-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px var(--shadow);
  border-color: var(--accent);
}

.item-tag {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  color: #000;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 700;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

[data-theme="dark"] .item-tag {
  box-shadow: 0 2px 6px rgba(255, 215, 0, 0.3);
}

.item-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.3;
  color: var(--text-primary);
}

.item-subtitle {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}

.item-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

.item-expandable {
  margin-top: 14px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.expand-button {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  padding: 8px 0;
  min-height: 44px; /* MEJORA: Touch target */
}

.expand-button:hover {
  color: var(--accent-light);
  text-decoration: underline;
}

.expanded-content {
  margin-top: 12px;
}

/* =========================
   FUENTES
   ========================= */

.sources {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}

.sources a {
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
  font-weight: 500;
}

.sources a:hover {
  color: var(--accent-light);
  text-decoration: underline;
}

/* =========================
   RESULTADOS
   ========================= */

.results {
  text-align: center;
  padding: 24px 0;
}

.score-display {
  font-size: 80px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 12px;
}

[data-theme="dark"] .score-display {
  filter: drop-shadow(0 4px 16px rgba(255, 215, 0, 0.4));
}

.percentage {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.results-message {
  font-size: 20px;
  color: var(--text-secondary);
  margin: 0 auto 28px;
  max-width: 560px;
  line-height: 1.5;
}

.results-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.results-breakdown {
  margin-top: 24px;
  text-align: left;
  background: var(--bg-surface);
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.results-breakdown h3 {
  font-size: 20px;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.results-breakdown ul {
  padding-left: 0;
  list-style: none;
}

.results-breakdown li {
  margin-bottom: 14px;
  padding: 14px;
  background: var(--bg-glass);
  border-radius: 10px;
  border: 1px solid var(--border);
}

.results-breakdown li strong {
  display: block;
  margin-bottom: 8px;
  color: var(--text-primary);
  font-size: 16px;
}

/* =========================
   FOOTER
   ========================= */

.footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--footer-h);
  border-top: 1px solid var(--border);
  background: var(--bg-glass);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  display: flex;
  align-items: center;
  z-index: 999;
}

.footer .container {
  padding: 16px 22px;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.footer-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.footer-link:hover {
  color: var(--accent-light);
  text-decoration: underline;
}

/* =========================
   REDUCIR ANIMACIONES
   ========================= */

/* Control manual de animaciones */
.reduce-animations .hero-title,
.reduce-animations [data-theme="dark"] .hero-title {
  animation: none !important;
}

.reduce-animations * {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
}

/* Preferencia del sistema */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
  
  [data-theme="dark"] .hero-title,
  .hero-title {
    animation: none !important;
  }
}

/* =========================
   FALLBACK SIN BACKDROP-FILTER
   ========================= */

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .nav,
  .card,
  .footer {
    background: var(--bg-primary);
  }
}

/* =========================
   RESPONSIVE DESIGN
   ========================= */

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  .nav-content {
    padding: 0 16px;
  }
  
  .display {
    font-size: 48px;
  }
  
  .headline {
    font-size: 28px;
    text-align: center;
  }
  
  .medusa-icon {
    width: 200px;
    height: 200px;
  }
  
  .hero {
    padding: 0;
  }
  
  #home {
    padding: 30px 0;
  }
  
  .hero-tagline {
    font-size: 22px;
  }
  
  .hero-subtitle {
    font-size: 16px;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--bg-glass);
    backdrop-filter: var(--blur);
    flex-direction: column;
    padding: 20px;
    gap: 8px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-link {
    width: 100%;
    text-align: left;
    font-size: 16px;
    padding: 12px 16px;
    min-height: 48px;
  }
  
  .content-grid {
    grid-template-columns: 1fr;
  }
  
  /* CORRECCIÓN: Botones más pequeños en tablet */
  .btn-primary,
  .btn-primary.btn-large {
    padding: 14px 28px !important;
    font-size: 17px !important;
  }
  
  .card {
    padding: 24px;
  }
  
  :root {
    --footer-h: 56px;
  }
}

@media (max-width: 480px) {
  .display {
    font-size: 40px;
  }
  
  .medusa-icon {
    width: 160px;
    height: 160px;
  }
  
  .hero {
    padding: 0;
  }
  
  #home {
    padding: 20px 0;
  }
  
  .hero-tagline {
    font-size: 20px;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  /* CORRECCIÓN CRÍTICA: Botones más pequeños y centrados */
  .btn-primary,
  .btn-secondary,
  .btn-primary.btn-large,
  .btn-secondary.btn-large {
    width: 100%;
    padding: 14px 24px !important;
    font-size: 16px !important;
    text-align: center;
    justify-content: center;
  }
  
  /* Asegurar que btn-large tampoco se haga muy grande */
  .hero-actions .btn-large {
    padding: 14px 24px !important;
    font-size: 16px !important;
  }
  
  .nav-right {
    gap: 8px;
  }
  
  .logo-text {
    display: none;
  }
  
  .logo-icon {
    width: 42px;
    height: 42px;
  }
  
  /* CORRECCIÓN CRÍTICA: Card más compacto para que quepa todo */
  .card {
    padding: 16px;
    margin: 12px 0;
  }
  
  /* CORRECCIÓN: Pregunta más pequeña */
  .question-text {
    font-size: 18px;
    margin-bottom: 16px;
  }
  
  /* CORRECCIÓN: Opciones más compactas */
  .option {
    padding: 12px 16px;
    min-height: 52px;
    font-size: 15px;
  }
  
  .option-number {
    width: 28px;
    height: 28px;
    font-size: 14px;
  }
  
  /* CORRECCIÓN: Quiz header más compacto */
  .quiz-header {
    margin-bottom: 16px;
  }
  
  /* CORRECCIÓN: Reducir espacio entre opciones */
  .options {
    gap: 10px;
  }
  
  /* CORRECCIÓN: Quiz actions siempre visibles */
  .quiz-actions {
    margin-top: 12px;
    position: sticky;
    bottom: 12px;
    background: var(--bg-glass);
    backdrop-filter: var(--blur);
    padding: 12px;
    margin-left: -16px;
    margin-right: -16px;
    margin-bottom: -16px;
    border-top: 1px solid var(--border);
    z-index: 10;
  }
  
  .tabs {
    padding: 3px;
  }
  
  .tab {
    padding: 8px 12px;
    font-size: 13px;
  }
  
  .score-display {
    font-size: 64px;
  }
  
  /* CORRECCIÓN: Feedback más compacto */
  .feedback {
    padding: 12px 16px;
    font-size: 14px;
  }
  
  .feedback-container {
    min-height: 48px;
    margin-top: 12px;
  }
}

/* Móviles muy pequeños */
@media (max-width: 360px) {
  .display {
    font-size: 36px;
  }
  
  .medusa-icon {
    width: 140px;
    height: 140px;
  }
  
  .hero-tagline {
    font-size: 18px;
  }
  
  .hero-subtitle {
    font-size: 14px;
  }
  
  .card {
    padding: 14px;
  }
  
  .question-text {
    font-size: 17px;
  }
  
  .option {
    padding: 10px 14px;
    min-height: 48px;
    font-size: 14px;
  }
  
  .option-number {
    width: 26px;
    height: 26px;
    font-size: 13px;
  }
  
  .tab {
    padding: 6px 10px;
    font-size: 12px;
  }
  
  .btn-primary,
  .btn-secondary,
  .btn-primary.btn-large,
  .btn-secondary.btn-large {
    padding: 12px 20px !important;
    font-size: 15px !important;
  }
  
  .hero-actions .btn-large {
    padding: 12px 20px !important;
    font-size: 15px !important;
  }
  
  .score-display {
    font-size: 56px;
  }
}

/* Landscape en móviles */
@media (max-height: 600px) and (orientation: landscape) {
  .hero {
    padding: 20px 0;
  }
  
  .medusa-icon {
    width: 120px;
    height: 120px;
  }
  
  .display {
    font-size: 36px;
  }
  
  .hero-tagline {
    font-size: 18px;
  }
  
  .hero-subtitle {
    font-size: 14px;
    margin-top: 8px;
  }
  
  .hero-actions {
    margin-top: 16px;
  }
  
  .card {
    padding: 16px;
  }
  
  .nav {
    height: 50px;
  }
  
  :root {
    --nav-h: 50px;
  }
  
  /* CORRECCIÓN: Quiz más compacto en landscape */
  .question-text {
    font-size: 17px;
    margin-bottom: 12px;
  }
  
  .option {
    padding: 10px 14px;
    min-height: 44px;
  }
  
  .options {
    gap: 8px;
  }
  
  .quiz-header {
    margin-bottom: 12px;
  }
  
  .quiz-actions {
    margin-top: 10px;
  }
}

/* Mejoras táctiles para todos los móviles */
@media (hover: none) and (pointer: coarse) {
  .btn-primary,
  .btn-secondary,
  .option,
  .nav-link,
  .tab {
    -webkit-tap-highlight-color: transparent;
  }
  
  .option:active {
    transform: scale(0.98);
  }
  
  .btn-primary:active,
  .btn-secondary:active {
    transform: translateY(2px);
  }
}

/* =========================
   UTILIDADES
   ========================= */

.loading {
  opacity: 0.6;
  pointer-events: none;
}