/* ============================================
   STYLES.CSS - COLEGIO VENECIA EMS.21
   Con Animaciones y Transiciones 
   ============================================ */

/* === VARIABLES CSS === */
:root {
  --primary: #1a73e8;
  --primary-dark: #0c47a1;
  --primary-light: #e6f0ff;
  --accent: #ff6b35;
  --success: #10b981;
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --bg-light: #f5f8fa;
  --bg-main: #ffffff;
  --white: #ffffff;
  --card-bg: #ffffff;
  --header-bg: #ffffff;
  --footer-bg: linear-gradient(135deg, var(--primary), var(--primary-dark));
  --input-bg: #f5f8fa;
  --border-color: #e5e7eb;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 6px 20px rgba(0,0,0,0.12);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.18);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === MODO OSCURO === */
[data-theme="dark"] {
  --primary: #60a5fa;
  --primary-dark: #3b82f6;
  --primary-light: #1e3a5f;
  --accent: #f97316;
  --text-dark: #f3f4f6;
  --text-light: #9ca3af;
  --bg-light: #111827;
  --bg-main: #0f172a;
  --white: #1e293b;
  --card-bg: #1e293b;
  --header-bg: #0f172a;
  --input-bg: #1e293b;
  --border-color: #374151;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 6px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
}

/* === THEME TOGGLE BUTTON === */
.theme-toggle {
  position: fixed;
  top: 100px;
  right: 25px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  z-index: 1001;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: var(--card-bg);
  color: var(--text-dark);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.theme-toggle:hover {
  transform: scale(1.1) rotate(15deg);
  box-shadow: var(--shadow-lg);
}

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

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  position: absolute;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.theme-toggle .icon-moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}

[data-theme="dark"] .theme-toggle .icon-sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}

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

/* Tooltip para el toggle */
.theme-toggle::after {
  content: 'Modo oscuro';
  position: absolute;
  right: 70px;
  background: var(--card-bg);
  color: var(--text-dark);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transform: translateX(10px);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .theme-toggle::after {
  content: 'Modo claro';
}

.theme-toggle:hover::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

/* === SMOOTH SCROLL GLOBAL === */
html {
  scroll-behavior: smooth;
}

html, body {
  min-height: 100%;
  margin: 0;
}

main {
  flex: 1;
}

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

body {
  font-family: 'Segoe UI', 'Inter', sans-serif;
  line-height: 1.6;
  background: var(--bg-main);
  color: var(--text-dark);
  overflow-x: hidden;
  transition: background-color 0.4s ease, color 0.4s ease;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* === PRELOADER === */
.preloader {
  position: fixed;
  inset: 0;
  background: var(--bg-main);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--primary-light);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* === HEADER CON ANIMACIÓN === */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: var(--header-bg);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  animation: slideDown 0.6s ease;
  transition: background-color 0.4s ease, box-shadow 0.4s ease;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: bold;
  font-size: 1.5rem;
  color: var(--primary);
}

.logo img {
  height: 80px;
  width: auto;
  transition: transform var(--transition-normal);
}

.logo:hover img {
  transform: scale(1.05) rotate(-2deg);
}

.logo span {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* === NAVEGACIÓN CON UNDERLINE ANIMADO === */
.nav-list {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-list li a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 600;
  font-size: 1.1rem;
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

.nav-list li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  transition: width var(--transition-normal);
}

.nav-list li a:hover {
  color: var(--primary);
}

.nav-list li a:hover::after,
.nav-list li a.active::after {
  width: 100%;
}

/* === HERO SECTION CON PARALLAX Y ANIMACIONES === */
.hero, .ingles {
  min-height: 100vh;
  background: linear-gradient(rgba(0,0,0,0.55), rgba(0,0,0,0.55)), url('fondoindex1.jpg') center/cover no-repeat ;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 70%, rgba(26, 115, 232, 0.3) 0%, transparent 50%),
              radial-gradient(circle at 70% 30%, rgba(255, 107, 53, 0.2) 0%, transparent 50%);
  animation: gradientPulse 8s ease infinite;
}

@keyframes gradientPulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

.overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.4);
}

.hero-content {
  position: relative;
  z-index: 1;
  animation: fadeInUp 1s ease 0.3s both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero h1 {
  font-size: 3.2rem;
  margin-bottom: 1.5rem;
  line-height: 1.2;
  animation: fadeInUp 0.8s ease 0.5s both;
}

/* Efecto de escritura para el título */
.hero h1.typing {
  overflow: hidden;
  border-right: 3px solid var(--accent);
  white-space: nowrap;
  animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
  from { width: 0; }
  to { width: 100%; }
}

@keyframes blink-caret {
  from, to { border-color: transparent; }
  50% { border-color: var(--accent); }
}

.hero p {
  font-size: 1.4rem;
  margin-bottom: 2.5rem;
  opacity: 0.95;
  animation: fadeInUp 0.8s ease 0.7s both;
}

/* === BOTÓN CON RIPPLE EFFECT === */
.btn {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  padding: 1rem 2rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  display: inline-block;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  box-shadow: 0 4px 15px rgba(26, 115, 232, 0.4);
  animation: fadeInUp 0.8s ease 0.9s both;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255,255,255,0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 25px rgba(26, 115, 232, 0.5);
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn:active {
  transform: translateY(-1px) scale(0.98);
}

/* === SECCIONES === */
.section {
  padding: 5rem 2rem;
  text-align: center;
}

/* === ASIGNATURAS === */
.asignaturas h2 {
  margin-bottom: 3rem;
  font-size: 2.5rem;
  color: var(--primary);
  position: relative;
  display: inline-block;
}

.asignaturas h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
}

/* === CARDS CON ANIMACIÓN SCROLL REVEAL === */
.card-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), background-color 0.4s ease;
  opacity: 0;
  transform: translateY(30px);
}

.card.reveal {
  animation: cardReveal 0.6s ease forwards;
}

@keyframes cardReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.card:hover::before {
  transform: scaleX(1);
}

.card h3 {
  color: var(--primary);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.card h3 a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

.card h3 a:hover {
  color: var(--accent);
}

.card p {
  color: var(--text-light);
  line-height: 1.7;
}

/* Stagger animation para cards */
.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:nth-child(4) { animation-delay: 0.4s; }
.card:nth-child(5) { animation-delay: 0.5s; }

/* === FOOTER === */
.footer {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  text-align: center;
  padding: 2rem 1rem;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 50%);
  animation: footerGlow 10s linear infinite;
}

@keyframes footerGlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.footer p {
  position: relative;
  z-index: 1;
}

/* === SLIDER SECTION MEJORADO === */
.slider-section {
  position: relative;
  overflow: hidden;
  height: 60vh;
  background: var(--text-dark);
}

.slider {
   display: flex;
  width: 100%;
  height: 100%;
  animation: slide 25s infinite linear;
  flex-shrink: 0;
}

.slider:hover {
  animation-play-state: paused;
}

.slide {
  min-width: 100vw;
  height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slide img {
  max-width: 100%;
  max-height: 100%;
  object-fit: cover;
  display: block;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-normal);
}

.slide img:hover {
  transform: scale(1.02);
}

@keyframes slide {
  0% { transform: translateX(0); }
  16% { transform: translateX(0); }

  20% { transform: translateX(-100vw); }
  36% { transform: translateX(-100vw); }

  40% { transform: translateX(-200vw); }
  56% { transform: translateX(-200vw); }

  60% { transform: translateX(-300vw); }
  76% { transform: translateX(-300vw); }

  80% { transform: translateX(-400vw); }
  96% { transform: translateX(-400vw); }

  100% { transform: translateX(0); } /* reinicia suave */
}
/*===================================================== ===== CONTENIDO DEL SLIDE (TEXTO ENCIMA DE LA IMAGEN) ===== */
.slide {
  position: relative; /* IMPORTANTE */
}

.slide-content {
  position: absolute;
  bottom: 20%;
  left: 5%;
  z-index: 2;
  color: white;
  max-width: 600px;
   text-shadow: 0 2px 10px rgba(0,0,0,0.7);
}

/* TEXTO MÁS VISIBLE */
.slide-content h2 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.slide-content p {
  font-size: 1.2rem;
}

/* CAPA OSCURA PARA MEJOR CONTRASTE */
.slide-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.10); /* oscurece imagen */
  z-index: 1;
}

/* Indicadores del slider */
.slider-indicators {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}

.slider-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.slider-dot.active,
.slider-dot:hover {
  background: var(--white);
  transform: scale(1.2);
}

/* === PRESENTACIÓN DESTACADA === */
.section#presentacion-ingles {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--bg-main) 100%);
  padding: 5rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: background 0.6s ease;
}

.section#presentacion-ingles::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(26, 115, 232, 0.1) 0%, transparent 70%);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}

#presentacion-ingles h2 {
  font-size: 2.4rem;
  color: var(--primary);
  margin-bottom: 1.5rem;
  position: relative;
}

#presentacion-ingles p {
  font-size: 1.2rem;
  max-width: 800px;
  margin: 0 auto;
  color: var(--text-dark);
  line-height: 1.9;
}

/* === OBJETIVOS DE APRENDIZAJE === */
.section#objetivos {
  background-color: var(--card-bg);
  padding: 5rem 2rem;
  text-align: center;
  transition: background-color 0.4s ease;
}

#objetivos h2 {
  font-size: 2.2rem;
  margin-bottom: 2.5rem;
  color: var(--primary-dark);
}

#objetivos ul {
  list-style: none;
  padding: 0;
  max-width: 800px;
  margin: 0 auto;
  text-align: left;
}

#objetivos ul li {
  background: var(--bg-light);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  border-left: 5px solid var(--primary);
  border-radius: var(--radius-sm);
  color: var(--text-dark);
  font-size: 1.1rem;
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateX(-30px);
  transition: all var(--transition-normal), background-color 0.4s ease;
}

#objetivos ul li.reveal {
  animation: slideInLeft 0.5s ease forwards;
}

@keyframes slideInLeft {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

#objetivos ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--primary-light), transparent);
  transition: width var(--transition-normal);
}

#objetivos ul li:hover {
  border-left-color: var(--accent);
  transform: translateX(10px);
}

#objetivos ul li:hover::before {
  width: 100%;
}

/* Stagger para objetivos */
#objetivos ul li:nth-child(1) { animation-delay: 0.1s; }
#objetivos ul li:nth-child(2) { animation-delay: 0.2s; }
#objetivos ul li:nth-child(3) { animation-delay: 0.3s; }
#objetivos ul li:nth-child(4) { animation-delay: 0.4s; }

/* === FLIP CARDS MEJORADAS === */
.asignaturas .asignaturas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  justify-items: center;
  max-width: 1400px;
  margin: 0 auto;
}

.asignaturas .flip-card {
  width: 300px;
  height: 320px;
  perspective: 1200px;
  cursor: pointer;
}

.asignaturas .flip-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.asignaturas .flip-card:hover .flip-inner {
  transform: rotateY(180deg);
  box-shadow: var(--shadow-lg);
}

.asignaturas .flip-front,
.asignaturas .flip-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--card-bg);
  display: grid;
  place-items: center;
  padding: 1.5rem;
  transition: background-color 0.4s ease;
}

.asignaturas .flip-front {
  background: linear-gradient(135deg, var(--card-bg), var(--bg-light));
}

.asignaturas .flip-front img {
  width: 65%;
  max-height: 65%;
  object-fit: contain;
  transition: transform var(--transition-normal);
}

.asignaturas .flip-card:hover .flip-front img {
  transform: scale(1.1) rotate(-5deg);
}

.asignaturas .flip-back {
  transform: rotateY(180deg);
  text-align: center;
  padding: 1.5rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.asignaturas .flip-back h3 {
  margin-bottom: 0.75rem;
  color: var(--white);
  font-size: 1.3rem;
  
}

.asignaturas .flip-back p {
  color: rgba(255,255,255,0.9);
  line-height: 1.6;
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

/* Enlaces dentro de flip cards */
.flip-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: auto;
}

.flip-link {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.2);
  color: white;
  text-decoration: none;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: all var(--transition-fast);
}

.flip-link:hover {
  background: rgba(255, 255, 255, 0.35);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.flip-link:active {
  transform: translateY(0);
}

/* === GALERÍA MEJORADA === */
.galeria h2 {
  margin-bottom: 2rem;
  font-size: 2.5rem;
  color: var(--primary);
}

/* Carpetas con bounce effect */
.folders {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin: 2rem auto;
  max-width: 1100px;
  padding: 0 1rem;
}

.folder {
  background: var(--card-bg);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.folder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary-light), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.folder:hover {
  transform: translateY(-5px) scale(1.02);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.folder:hover::before {
  opacity: 1;
}

.folder:active {
  transform: translateY(-2px) scale(0.98);
}

.folder-icon {
  width: 50px;
  height: 36px;
  position: relative;
  display: inline-block;
  background: linear-gradient(135deg, #ffd700, #ffc107);
  border: 2px solid #f1c27d;
  border-radius: 6px 6px 12px 12px;
  transition: transform var(--transition-normal);
  z-index: 1;
}

.folder-icon::before {
  content: '';
  position: absolute;
  left: 6px;
  top: -12px;
  width: 24px;
  height: 14px;
  background: linear-gradient(135deg, #ffe29b, #ffd54f);
  border: 2px solid #f1c27d;
  border-bottom: none;
  border-radius: 6px 6px 0 0;
}

.folder:hover .folder-icon {
  transform: rotate(-5deg) scale(1.1);
}

.folder-name {
  font-weight: 700;
  color: var(--primary-dark);
  position: relative;
  z-index: 1;
  font-size: 1.1rem;
}

/* Álbumes con slide animation */
.albums {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.album {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin: 0 auto 1.5rem;
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transform: translateY(-20px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.album.is-open {
  max-height: 2000px;
  opacity: 1;
  transform: translateY(0);
}

.album-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid #eef2fb;
  background: linear-gradient(135deg, var(--primary-light), var(--white));
}

.album-header h3 {
  color: var(--primary);
  margin: 0;
  font-size: 1.3rem;
}

.album-actions {
  display: flex;
  gap: 0.75rem;
}

.play-album, .close-album {
  border: none;
  background: var(--white);
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 1.2rem;
  color: var(--text-light);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.play-album:hover, .close-album:hover {
  background: var(--primary);
  color: var(--white);
  transform: scale(1.1);
}

/* Grid de imágenes con hover zoom */
.album-grid {
  padding: 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.album-grid img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  cursor: zoom-in;
  transition: all var(--transition-normal);
}

.album-grid img:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
  filter: brightness(1.05);
}

/* Lightbox mejorado */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 1rem;
  backdrop-filter: blur(10px);
}

.lightbox.is-open {
  display: flex;
  animation: lightboxFade 0.3s ease;
}

@keyframes lightboxFade {
  from { opacity: 0; }
  to { opacity: 1; }
}

#lightbox-img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  animation: lightboxZoom 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes lightboxZoom {
  from {
    transform: scale(0.8);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.lightbox-close, .lightbox-prev, .lightbox-next {
  position: absolute;
  border: none;
  background: rgba(255,255,255,0.95);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.5rem;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
}

.lightbox-close { top: 20px; right: 20px; }
.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }

.lightbox-close:hover, .lightbox-prev:hover, .lightbox-next:hover {
  background: var(--primary);
  color: var(--white);
  transform: scale(1.1);
}

/* === VIDEO GRID MEJORADO === */
.videoGrid {
  margin-top: 2.5rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

@media (max-width: 1000px) { .videoGrid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .videoGrid { grid-template-columns: 1fr; } }

.vidCard {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: #000;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transform: translateY(0) scale(1);
  transition: all var(--transition-normal);
  aspect-ratio: 16/10;
  opacity: 0;
}

.vidCard.reveal {
  animation: cardReveal 0.6s ease forwards;
}

.vidCard img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scale(1.02);
  transition: transform 0.5s ease, filter 0.5s ease;
  filter: brightness(0.9) saturate(0.95);
}

.vidCard:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-lg);
}

.vidCard:hover img {
  transform: scale(1.1);
  filter: brightness(1) saturate(1.05);
}

.vidMeta {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 1rem;
  background: linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,0.7) 100%);
  color: #fff;
  font-weight: 700;
}

.vidMeta h3 {
  font-size: 1.1rem;
  margin: 0;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.playIcon {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: rgba(255,255,255,0.95);
  color: #111;
  font-size: 1.3rem;
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
  transform: scale(1);
  transition: all var(--transition-normal);
}

.vidCard:hover .playIcon {
  transform: scale(1.15);
  background: var(--primary);
  color: var(--white);
}

/* Stagger para videos */
.vidCard:nth-child(1) { animation-delay: 0.1s; }
.vidCard:nth-child(2) { animation-delay: 0.2s; }
.vidCard:nth-child(3) { animation-delay: 0.3s; }
.vidCard:nth-child(4) { animation-delay: 0.4s; }

/* Modal de video */
.vidModal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
}

.vidModal.is-open {
  pointer-events: auto;
}

.vidBackdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.vidModal.is-open .vidBackdrop {
  opacity: 1;
}

.vidDialog {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  transform: scale(0.9);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.vidModal.is-open .vidDialog {
  transform: scale(1);
  opacity: 1;
}

.vidDialog video {
  width: min(950px, 92vw);
  height: auto;
  max-height: 80vh;
  background: #000;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.vidClose {
  position: absolute;
  top: 20px;
  right: 25px;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,0.95);
  color: #111;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  z-index: 1;
  transition: all var(--transition-fast);
}

.vidClose:hover {
  background: var(--accent);
  color: var(--white);
  transform: scale(1.1) rotate(90deg);
}

.body-noScroll {
  overflow: hidden;
}

/* === FORMULARIO DE CONTACTO MEJORADO === */
.contact-section {
  max-width: 600px;
  margin: 60px auto;
  background: var(--card-bg);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  transition: background-color 0.4s ease;
}

.contact-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.contact-section h2 {
  text-align: center;
  color: var(--primary);
  margin-bottom: 2rem;
  font-size: 1.8rem;
}

.form-group {
  margin-bottom: 1.5rem;
  position: relative;
}

.form-group label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
  display: block;
  transition: color var(--transition-fast);
}

.form-group input {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  outline: none;
  transition: all var(--transition-normal);
  background: var(--input-bg);
  color: var(--text-dark);
}

.form-group input:focus {
  border-color: var(--primary);
  background: var(--card-bg);
  box-shadow: 0 0 0 4px rgba(26, 115, 232, 0.15);
}

[data-theme="dark"] .form-group input:focus {
  box-shadow: 0 0 0 4px rgba(96, 165, 250, 0.2);
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label {
  color: var(--primary);
}

/* Floating labels */
.form-group.floating {
  position: relative;
  margin-top: 1.5rem;
}

.form-group.floating label {
  position: absolute;
  left: 16px;
  top: 14px;
  transition: all var(--transition-normal);
  pointer-events: none;
  background: transparent;
  padding: 0 4px;
}

.form-group.floating input:focus ~ label,
.form-group.floating input:not(:placeholder-shown) ~ label {
  top: -10px;
  font-size: 0.85rem;
  color: var(--primary);
  background: var(--white);
}

.btn-enviar {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  font-weight: 700;
  font-size: 1.1rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.btn-enviar::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255,255,255,0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.btn-enviar:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(26, 115, 232, 0.4);
}

.btn-enviar:hover::before {
  width: 400px;
  height: 400px;
}

.btn-enviar:active {
  transform: translateY(-1px);
}

/* Mensaje de éxito con animación */
.mensaje-exito {
  text-align: center;
  color: var(--success);
  margin-top: 1.5rem;
  font-weight: bold;
  font-size: 1.1rem;
  padding: 1rem;
  background: rgba(16, 185, 129, 0.1);
  border-radius: var(--radius-sm);
  animation: successPop 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes successPop {
  0% {
    transform: scale(0.8);
    opacity: 0;
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Checkmark animado */
.success-checkmark {
  width: 60px;
  height: 60px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: var(--success);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: successPop 0.5s ease;
}

.success-checkmark::after {
  content: '✓';
  color: white;
  font-size: 2rem;
  font-weight: bold;
}

/* === BACK TO TOP BUTTON === */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-normal);
  z-index: 1000;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.back-to-top:active {
  transform: translateY(-2px);
}

/* === CURSOR PERSONALIZADO === */
.custom-cursor {
  width: 20px;
  height: 20px;
  border: 2px solid var(--primary);
  border-radius: 50%;
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
  transform: translate(-50%, -50%);
}

.custom-cursor.hover {
  transform: translate(-50%, -50%) scale(1.5);
  background: rgba(26, 115, 232, 0.2);
  border-color: var(--accent);
}

/* === MENÚ HAMBURGUESA MÓVIL === */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  padding: 8px;
  cursor: pointer;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
  z-index: 1002;
}

.hamburger:hover {
  background: var(--bg-light);
}

.hamburger-line {
  width: 24px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: center;
}

.hamburger-line:nth-child(1) {
  margin-bottom: 5px;
}

.hamburger-line:nth-child(3) {
  margin-top: 5px;
}

/* Animación del hamburger a X */
.hamburger.active .hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.active .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Menú móvil overlay */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Estilos del nav en móvil */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }
  
  .mobile-menu-overlay {
    display: block;
  }
  
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--card-bg);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.15);
    z-index: 1001;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    padding-top: 80px;
  }
  
  .nav.active {
    right: 0;
  }
  
  .nav-list {
    flex-direction: column;
    gap: 0;
    padding: 0;
  }
  
  .nav-list li {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.3s ease, transform 0.3s ease;
  }
  
  .nav.active .nav-list li {
    opacity: 1;
    transform: translateX(0);
  }
  
  /* Stagger animation para items del menú */
  .nav.active .nav-list li:nth-child(1) { transition-delay: 0.1s; }
  .nav.active .nav-list li:nth-child(2) { transition-delay: 0.15s; }
  .nav.active .nav-list li:nth-child(3) { transition-delay: 0.2s; }
  .nav.active .nav-list li:nth-child(4) { transition-delay: 0.25s; }
  .nav.active .nav-list li:nth-child(5) { transition-delay: 0.3s; }
  
  .nav-list li a {
    display: block;
    padding: 1.25rem 2rem;
    font-size: 1.2rem;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
  }
  
  .nav-list li a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: var(--primary);
    transform: scaleY(0);
    transition: transform 0.3s ease;
  }
  
  .nav-list li a:hover::before,
  .nav-list li a.active::before {
    transform: scaleY(1);
  }
  
  .nav-list li a::after {
    display: none;
  }
  
  /* Header ajustes móvil */
  .header {
    padding: 0.75rem 1rem;
  }
  
  .logo {
    font-size: 1.1rem;
  }
  
  .logo img {
    height: 50px;
  }
  
  .logo span {
    max-width: 150px;
    font-size: 0.95rem;
    line-height: 1.2;
  }
  
  /* Cerrar menú cuando se hace click en un link */
  .nav-list li a {
    transition: background var(--transition-fast), color var(--transition-fast);
  }
  
  .nav-list li a:active {
    background: var(--primary-light);
  }
  
  /* Ajuste del theme toggle en móvil */
  .theme-toggle {
    top: auto;
    bottom: 100px;
    right: 20px;
    width: 50px;
    height: 50px;
  }
  
  .theme-toggle::after {
    display: none;
  }
}

/* Extra small devices */
@media (max-width: 400px) {
  .nav {
    width: 100%;
    right: -100%;
  }
  
  .logo span {
    display: none;
  }
  
  .logo img {
    height: 45px;
  }
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .header {
    flex-direction: row;
    justify-content: space-between;
    gap: 0;
    padding: 0.75rem 1rem;
  }
  .nav-list {
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .hero p {
    font-size: 1.1rem;
  }
  
  .card-container {
    grid-template-columns: 1fr;
  }
  
  .asignaturas .flip-card {
    width: 100%;
    max-width: 320px;
    height: 280px;
  }
  
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }
  
  .section {
    padding: 3rem 1rem;
  }
  
  .album-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .album-grid img {
    height: 150px;
  }
}

/* === ANIMACIONES DE UTILIDAD === */
.fade-in {
  animation: fadeIn 0.6s ease;
}

.slide-up {
  animation: fadeInUp 0.6s ease;
}

.scale-in {
  animation: scaleIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes scaleIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

/* Shake animation para errores */
.shake {
  animation: shake 0.5s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-5px); }
  40%, 80% { transform: translateX(5px); }
}

/* Pulse animation */
.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* Bounce animation */
.bounce {
  animation: bounce 1s ease infinite;
}

@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    transform: translateY(0);
  }
  40%, 43% {
    transform: translateY(-15px);
  }
  70% {
    transform: translateY(-7px);
  }
  90% {
    transform: translateY(-3px);
  }
}
/* seccion gracias */
/* MAIN */
.gracias-main {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 60px 20px;
}

.gracias-section {
  width: 100%;
  max-width: 900px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.gracias-card {
  background: var(--card-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 50px 35px;
  text-align: center;
  width: 100%;
  max-width: 650px;
  animation: aparecer 0.7s ease;
}

.check-circle {
  width: 90px;
  height: 90px;
  margin: 0 auto 25px;
  border-radius: 50%;
  background: linear-gradient(135deg, #16a34a, #22c55e);
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 8px 20px rgba(34, 197, 94, 0.3);
}

.check-circle span {
  color: white;
  font-size: 2.5rem;
  font-weight: bold;
}

.gracias-card h1 {
  font-size: 2rem;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.mensaje-principal {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--text-color);
}

.mensaje-secundario {
  font-size: 1rem;
  margin-bottom: 30px;
  color: #666;
}

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

.btn {
  text-decoration: none;
  padding: 14px 24px;
  border-radius: 10px;
  font-weight: bold;
  transition: all 0.3s ease;
  display: inline-block;
}

.btn-principal {
  background: var(--primary-color);
  color: white;
}

.btn-principal:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
}

.btn-secundario {
  background: var(--secondary-color);
  color: white;
}

.btn-secundario:hover {
  background: var(--secondary-hover);
  transform: translateY(-2px);
}

/* === TARJETAS PDW ENCIMA DEL JUEGO === secccion giovanny y carlos  */

.pdw-recursos-web {
  width: 100%;
  padding: 4rem 2rem;
  background: var(--bg-main);
  text-align: center;
}

.pdw-recursos-web h2 {
  font-size: 2.4rem;
  color: var(--primary);
  margin-bottom: 2.5rem;
}

.pdw-recursos-container {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}


.pdw-recurso-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  overflow: visible;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.35s ease;
}

.pdw-recurso-card:hover {
  transform: translateY(-12px) scale(1.03);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.pdw-recurso-img {
  height: 220px;
  background: linear-gradient(135deg, var(--primary-light), var(--bg-main));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.pdw-recurso-img img {
  width: 80%;
  max-width: 220px;
  height: 160px;
  object-fit: contain;
  display: block;
  transition: transform 0.35s ease;
}

.pdw-recurso-card:hover .pdw-recurso-img img {
  transform: scale(1.12) rotate(-3deg);
}

.pdw-recurso-content {
  padding: 1.5rem;
}

.pdw-recurso-content h3 {
  color: var(--primary);
  font-size: 1.35rem;
  margin-bottom: 0.7rem;
}

.pdw-recurso-content p {
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.pdw-recurso-content span {
  color: var(--accent);
  font-weight: 700;
}

@media (max-width: 768px) {
  .pdw-recursos-container {
    grid-template-columns: 1fr;
  }
}


/* === TARJETA 8 CON CUATRO QR AL FRENTE SECTION PDW=== secccion carlos y giovanny  */

.qr-card {
  position: relative;
  z-index: 10;
}

.qr-card:hover {
  z-index: 999;
}

/* Evita que se corte el despliegue */
.asignaturas,
.asignaturas .asignaturas-grid {
  overflow: visible;
}

/* Contenedor de las 4 tarjetas QR */
.qr-subcards-menu {
  position: absolute;
  top: 180%;
  left: 50%;
  width: 620px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  transform: translate(-50%, -50%) scale(0.3);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  z-index: 1000;
  transition: all 0.45s ease;
}

/* Al pasar el cursor aparecen al frente seccion de cartas de allison  */
.qr-card:hover .qr-subcards-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, -145%) scale(1);
}

/* Tarjetas pequeñas QR */
.qr-subcard {
  background: white;
  text-decoration: none;
  color: var(--text-dark);
  border-radius: 16px;
  padding: 14px;
  box-shadow: 0 12px 35px rgba(0,0,0,0.25);
  border: 2px solid var(--primary-light);
  text-align: center;
  transition: all 0.3s ease;
}

.qr-subcard:hover {
  transform: translateY(-10px) scale(1.05);
  border-color: var(--accent);
}

.qr-subcard img {
  width: 100%;
  max-width: 110px;
  height: 110px;
  object-fit: contain;
  margin-bottom: 8px;
}

.qr-subcard h4 {
  font-size: 0.9rem;
  color: var(--primary);
  margin: 0;
}

/* Responsive */
@media (max-width: 768px) {
  .qr-subcards-menu {
    width: 300px;
    grid-template-columns: repeat(2, 1fr);
  }

  .qr-card:hover .qr-subcards-menu {
    transform: translate(-50%, -125%) scale(1);
  }

  .qr-subcard img {
    max-width: 90px;
    height: 90px;
  }
}
.pdw-recursos-web,
.pdw-recursos-container,
.pdw-recurso-card,
.pdw-card-desplegable {
  overflow: visible !important;
}

.pdw-card-desplegable {
  position: relative;
  z-index: 50;
}

.pdw-card-desplegable.activa {
  z-index: 99999;
}

.pdw-menu-desplegable {
  position: absolute;
  left: 50%;
  bottom: 110%;
  width: 780px;

  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;

  opacity: 0;
  visibility: hidden;
  pointer-events: none;

  transform: translateX(-50%) translateY(20px) scale(0.85);
  transition: all 0.35s ease;

  z-index: 999999;
}

.pdw-card-desplegable.activa .pdw-menu-desplegable {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;

  transform: translateX(-50%) translateY(0) scale(1);
}

.pdw-subcard {
  min-height: 140px;
  background: linear-gradient(
  135deg,
  #0f172a,
  #1e293b
);
  color: var(--primary);
  text-decoration: none;
  border-radius: 18px;
  padding: 1rem;
  box-shadow: 0 18px 40px rgba(0,0,0,0.35);
  border: 2px solid var(--primary-light);
  font-weight: 700;

  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;

  transition: all 0.3s ease;
}

.pdw-subcard:hover {
  transform: translateY(-10px) scale(1.06);
  border-color: var(--accent);
  color: var(--accent);
}

@media (max-width: 768px) {
  .pdw-menu-desplegable {
    width: 340px;
    grid-template-columns: repeat(2, 1fr);
  }
}
.pdw-card-desplegable.activa .pdw-menu-desplegable,
.pdw-menu-desplegable:hover {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* === RESEARCH LINE GALERÍA Y VIDEOS seccion de viviana y oscar=== */

.rl-media-section {
  padding: 5rem 2rem;
  background: var(--bg-main);
  text-align: center;
  overflow: visible;
}

.rl-media-section h2 {
  color: var(--primary);
  font-size: 2.3rem;
  margin-bottom: 2rem;
}

.rl-gallery {
  max-width: 1100px;
  margin: 0 auto 4rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  overflow: visible;
}

.rl-gallery img {
  width: 100%;
  height: 230px;
  object-fit: cover;
  border-radius: 22px;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: all 0.35s ease;
}

.rl-gallery img:hover {
  transform: translateY(-18px) scale(1.15);
  box-shadow: var(--shadow-lg);
  z-index: 20;
}

/* LIGHTBOX IMÁGENES seccion de viviana y oscar */

.rl-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.35s ease;
  z-index: 999999;
}

.rl-lightbox.active {
  opacity: 1;
  visibility: visible;
}

.rl-lightbox img {
  max-width: 85vw;
  max-height: 85vh;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}

.rl-close,
.rl-prev,
.rl-next {
  position: absolute;
  width: 55px;
  height: 55px;
  border: none;
  border-radius: 50%;
  background: white;
  cursor: pointer;
  font-size: 1.6rem;
  font-weight: bold;
  z-index: 5;
}

.rl-close {
  top: 30px;
  right: 30px;
}

.rl-prev {
  left: 30px;
}

.rl-next {
  right: 30px;
}

.rl-close:hover,
.rl-prev:hover,
.rl-next:hover {
  background: var(--primary);
  color: white;
}

/* VIDEOS THUMBNAILS */

.rl-video-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.rl-video-card {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: 22px;
  box-shadow: var(--shadow-md);
  aspect-ratio: 16 / 9;
  background: #000;
  transition: all 0.35s ease;
}

.rl-video-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.75);
  transition: all 0.35s ease;
}

.rl-video-card span {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: white;
  font-size: 3rem;
}

.rl-video-card:hover {
  transform: translateY(-14px) scale(1.08);
  box-shadow: var(--shadow-lg);
}

.rl-video-card:hover img {
  filter: brightness(1);
  transform: scale(1.12);
}

/* MODAL VIDEO */

.rl-video-modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.35s ease;
  z-index: 999999;
}

.rl-video-modal.active {
  opacity: 1;
  visibility: visible;
}

.rl-video-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(8px);
}

.rl-video-container {
  position: relative;
  z-index: 5;
  width: 80vw;
  max-width: 1000px;
}

.rl-video-container video {
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.rl-video-close {
  position: absolute;
  top: -60px;
  right: 0;
  width: 50px;
  height: 50px;
  border: none;
  border-radius: 50%;
  background: white;
  font-size: 1.5rem;
  font-weight: bold;
  cursor: pointer;
}

.rl-video-close:hover {
  background: var(--accent);
  color: white;
}

@media (max-width: 768px) {
  .rl-gallery,
  .rl-video-grid {
    grid-template-columns: 1fr;
  }
}
/* === TARJETAS 3D RESEARCH LINE === */

.rl-3d-section {
  padding: 5rem 2rem;
  background: var(--bg-main);
  text-align: center;
}

.rl-3d-section h2 {
  color: var(--primary);
  font-size: 2.4rem;
  margin-bottom: 3rem;
}

.rl-3d-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.rl-3d-card {
  height: 320px;
  perspective: 1200px;
  cursor: pointer;
}

.rl-3d-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.75s ease;
  transform-style: preserve-3d;
  border-radius: 22px;
}

.rl-3d-card:hover .rl-3d-inner {
  transform: rotateY(180deg);
}

.rl-3d-front,
.rl-3d-back {
  position: absolute;
  inset: 0;
  border-radius: 22px;
  backface-visibility: hidden;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.rl-3d-front {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: white;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.rl-3d-front h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: white;
}

.rl-3d-front p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.85);
}

.rl-3d-back {
  transform: rotateY(180deg);
}

.rl-3d-back img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 900px) {
  .rl-3d-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .rl-3d-grid {
    grid-template-columns: 1fr;
  }
}

/*galeria de imagenes de RL*/
/* === GALERÍA RESEARCH LINE CON TRANSICIÓN === */

.rl-carousel-gallery {
  width: 100%;
  max-width: 1200px;
  margin: 2rem auto 4rem;
  overflow: hidden;
  border-radius: 22px;
  padding: 1rem 0;
  background: linear-gradient(135deg, var(--primary-light), var(--bg-main));
  box-shadow: var(--shadow-lg);
}

.rl-carousel-track {
  display: flex;
  gap: 1.2rem;
  width: max-content;
  animation: rlGalleryMove 35s linear infinite;
}

.rl-carousel-gallery:hover .rl-carousel-track {
  animation-play-state: paused;
}

.rl-carousel-track img {
  width: 280px;
  height: 190px;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: var(--shadow-md);
  transition: transform 0.35s ease, filter 0.35s ease;
  cursor: pointer;
}

.rl-carousel-track img:hover {
  transform: scale(1.08);
  filter: brightness(1.08);
}

@keyframes rlGalleryMove {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

@media (max-width: 768px) {
  .rl-carousel-track img {
    width: 220px;
    height: 150px;
  }

  .rl-carousel-track {
    animation-duration: 28s;
  }
}
.rl-gallery-img {
    cursor: pointer;
}

/* Animación al abrir */
.rl-lightbox img {
    animation: zoomFoto .3s ease;
}

@keyframes zoomFoto {
    from{
        transform: scale(.8);
        opacity:0;
    }

    to{
        transform: scale(1);
        opacity:1;
    }
}
/* === VIDEO REPRODUCTOR EN LA MISMA SECCIÓN === */

.rl-video-card {
  cursor: pointer;
}

.rl-video-inline {
  display: none;
  position: relative;
  max-width: 900px;
  margin: 2rem auto 0;
  padding: 1rem;
  background: #000;
  border-radius: 22px;
  box-shadow: var(--shadow-lg);
  animation: videoAparece 0.4s ease;
}

.rl-video-inline.active {
  display: block;
}

.rl-video-inline video {
  width: 100%;
  max-height: 520px;
  border-radius: 16px;
  display: block;
  background: #000;
}

.rl-video-inline-close {
  position: absolute;
  top: -18px;
  right: -18px;
  width: 42px;
  height: 42px;
  border: none;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  font-size: 1.3rem;
  font-weight: bold;
  cursor: pointer;
  z-index: 5;
  box-shadow: var(--shadow-md);
  transition: transform 0.25s ease, background 0.25s ease;
}

.rl-video-inline-close:hover {
  transform: scale(1.1) rotate(90deg);
  background: var(--primary);
}

@keyframes videoAparece {
  from {
    opacity: 0;
    transform: scale(0.92) translateY(20px);
  }

  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* === SUBTARJETA QR PARA AUGMENTED REALITY === */

.qr-ar-menu {
  width: 170px;
  grid-template-columns: 1fr;
}

.qr-card:hover .qr-ar-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, -145%) scale(1);
}

/* QR pequeño solo para la tarjeta 7 */
.mini-qr-ar {
  width: 80px;
  height: 80px;
  object-fit: contain;
  background: white;
  padding: 5px;
  border-radius: 10px;
  margin: 6px auto 8px;
  display: block;
  box-shadow: 0 4px 10px rgba(0,0,0,0.25);
}


/* para el rsponsive*/

@media (max-width: 768px) {
  .slider-section,
  .slide {
    height: 55vh;
  }

  .slide img {
    width: 100%;
    height: 100%;
    border-radius: 0;
  }

  .slide-content {
    left: 1rem;
    right: 1rem;
    bottom: 12%;
    max-width: 90%;
  }

  .slide-content h2 {
    font-size: 1.6rem;
  }

  .slide-content p {
    font-size: 1rem;
  }
}
/* menu hamburguesa*/

/* Evita el desplazamiento cuando el menú está abierto */
body.menu-open {
  overflow: hidden;
}

/* Botón hamburguesa */
.hamburger {
  display: none;
  position: relative;
  z-index: 1101;
  width: 44px;
  height: 44px;
  padding: 8px;
  border: none;
  background: transparent;
  cursor: pointer;
}

.hamburger-line {
  display: block;
  width: 28px;
  height: 3px;
  margin: 5px auto;
  border-radius: 3px;
  background-color: currentColor;
  transition:
    transform 0.3s ease,
    opacity 0.3s ease;
}

/* Transformación de hamburguesa a X */
.hamburger.active .hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Fondo oscuro */
.mobile-menu-overlay {
  display: none;
}

/* Versión móvil */
@media (max-width: 768px) {
  .header {
    position: relative;
    z-index: 1100;
  }

  .hamburger {
    display: block;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    z-index: 1100;
    width: min(82%, 320px);
    height: 100vh;
    padding: 90px 25px 30px;
    background-color: var(--background-color, #ffffff);
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.2);
    transition: right 0.3s ease;
    overflow-y: auto;
  }

  .nav.active {
    right: 0;
  }

  .nav-list {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .nav-list li {
    width: 100%;
  }

  .nav-list a {
    display: block;
    width: 100%;
    padding: 14px 12px;
  }

  .mobile-menu-overlay {
    position: fixed;
    inset: 0;
    z-index: 1090;
    display: block;
    visibility: hidden;
    background-color: rgba(0, 0, 0, 0.55);
    opacity: 0;
    transition:
      opacity 0.3s ease,
      visibility 0.3s ease;
  }

  .mobile-menu-overlay.active {
    visibility: visible;
    opacity: 1;
  }
}

/* === AJUSTE EXCLUSIVO OLIMPIADAS STEAM: 5 TARJETAS CENTRADAS === */
.asignaturas .steam-cards-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  justify-items: center;
  align-items: stretch;
}

.asignaturas .steam-cards-grid .flip-card {
  width: 100%;
  max-width: 300px;
}

/* Primera fila: 3 tarjetas */
.asignaturas .steam-cards-grid .flip-card:nth-child(1) {
  grid-column: 1 / span 2;
}

.asignaturas .steam-cards-grid .flip-card:nth-child(2) {
  grid-column: 3 / span 2;
}

.asignaturas .steam-cards-grid .flip-card:nth-child(3) {
  grid-column: 5 / span 2;
}

/* Segunda fila: 2 tarjetas centradas */
.asignaturas .steam-cards-grid .flip-card:nth-child(4) {
  grid-column: 2 / span 2;
}

.asignaturas .steam-cards-grid .flip-card:nth-child(5) {
  grid-column: 4 / span 2;
}

@media (max-width: 900px) {
  .asignaturas .steam-cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: 700px;
  }

  .asignaturas .steam-cards-grid .flip-card:nth-child(n) {
    grid-column: auto;
  }

  .asignaturas .steam-cards-grid .flip-card:nth-child(5) {
    grid-column: 1 / -1;
    justify-self: center;
  }
}

@media (max-width: 600px) {
  .asignaturas .steam-cards-grid {
    grid-template-columns: 1fr;
    max-width: 340px;
  }

  .asignaturas .steam-cards-grid .flip-card:nth-child(n) {
    grid-column: auto;
    justify-self: center;
  }
}
/* ============================================
   FOOTER EMS XXI
   ============================================ */

.footer {
    background: linear-gradient(
        135deg,
        var(--primary),
        var(--primary-dark)
    );

    color: white;
    padding: 2rem 4rem 1rem;
    position: relative;
    overflow: hidden;
}

/* Efecto de fondo que ya tenía tu página */
.footer::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;

    background: radial-gradient(
        circle,
        rgba(255,255,255,0.10) 0%,
        transparent 50%
    );

    animation: footerGlow 10s linear infinite;
    pointer-events: none;
}

@keyframes footerGlow {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}


/* ============================================
   CONTENEDOR PRINCIPAL
   ============================================ */

.footer-container {
    max-width: 1400px;
    margin: 0 auto;

    display: grid;

    /* Aprovecha todo el ancho disponible */
    grid-template-columns: 1.5fr 1fr 1.5fr;

    align-items: center;
    gap: 3rem;

    position: relative;
    z-index: 2;
}


/* ============================================
   IZQUIERDA - NOMBRE
   ============================================ */

.footer-brand {
    text-align: left;
}

.footer-brand h3 {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 700;
}

.footer-brand p {
    margin: 4px 0 0;
    font-size: 0.95rem;
    opacity: 0.85;
}


/* ============================================
   CENTRO - MENSAJE
   ============================================ */

.footer-message {
    text-align: center;
    line-height: 1.4;
}

.footer-message p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.85;
}

.footer-message strong {
    font-size: 1.05rem;
}


/* ============================================
   DERECHA - REDES SOCIALES
   ============================================ */

.footer-social {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 18px;
}


/* Cada red social */

.social-item {
    display: flex;
    align-items: center;
    gap: 9px;

    padding: 9px 14px;

    color: white;
    text-decoration: none;

    background: rgba(255,255,255,0.12);

    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 50px;

    transition:
        transform 0.3s ease,
        background 0.3s ease,
        box-shadow 0.3s ease;
}


/* Imagen */

.social-item img {
    width: 30px;
    height: 30px;
    object-fit: contain;

    transition: transform 0.3s ease;
}


/* Nombre Instagram / TikTok */

.social-item span {
    font-size: 0.9rem;
    font-weight: 600;
}


/* Efecto hover */

.social-item:hover {
    transform: translateY(-4px);

    background: rgba(255,255,255,0.24);

    box-shadow:
        0 8px 20px rgba(0,0,0,0.20);
}

.social-item:hover img {
    transform: scale(1.15);
}


/* ============================================
   PARTE INFERIOR
   ============================================ */

.footer-bottom {
    max-width: 1400px;
    margin: 1.5rem auto 0;

    padding-top: 1rem;

    border-top: 1px solid rgba(255,255,255,0.20);

    text-align: center;

    position: relative;
    z-index: 2;
}

.footer-bottom p {
    margin: 0;
    font-size: 0.82rem;
    opacity: 0.75;
}


/* ============================================
   TABLET
   ============================================ */

@media (max-width: 900px) {

    .footer {
        padding: 2rem;
    }

    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
    }

    .footer-message {
        display: none;
    }

}


/* ============================================
   CELULAR
   ============================================ */

@media (max-width: 600px) {

    .footer {
        padding: 1.7rem 1.2rem 1rem;
    }

    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 1.3rem;
    }

    .footer-brand {
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }

    .social-item span {
        display: none;
    }

    .social-item {
        width: 50px;
        height: 50px;
        padding: 0;
        justify-content: center;
    }

    .social-item img {
        width: 27px;
        height: 27px;
    }

    .footer-bottom {
        margin-top: 1.2rem;
    }
}
.footer-brand h3 {
    margin: 0;
    font-size: 1.3rem;
    font-weight: 700;
    font-family: inherit;
}

.footer-brand p {
    margin: 4px 0 0;
    font-size: 0.95rem;
    font-weight: 400;
    font-family: inherit;
    opacity: 0.9;
}

.footer-message {
    text-align: center;
    line-height: 1.5;
    font-family: inherit;
}

.footer-message p {
    margin: 0;
    font-size: 0.95rem;
    font-weight: 400;
    opacity: 0.9;
}

.footer-message strong {
    font-size: 1rem;
    font-weight: 600;
}

.social-item span {
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
}

.footer-bottom p {
    margin: 0;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 400;
    opacity: 0.85;
}

/* ==========================================================
   EVENTOS Y EXPERIENCIAS EMS21
   ========================================================== */


/* --------------------------
   ENCABEZADO
-------------------------- */

.eventos-encabezado {
    padding: 90px 25px 75px;

    background:
        radial-gradient(
            circle at 85% 20%,
            rgba(26, 115, 232, 0.10),
            transparent 32%
        ),
        linear-gradient(
            180deg,
            #ffffff 0%,
            #f5f9ff 100%
        );

    text-align: center;
}


.eventos-encabezado-contenido {
    max-width: 900px;
    margin: 0 auto;
}


.eventos-mini-titulo {
    display: inline-block;

    margin-bottom: 16px;

    color: var(--primary);

    font-size: 0.85rem;
    font-weight: 700;

    letter-spacing: 1.5px;
    text-transform: uppercase;
}


.eventos-encabezado h1 {
    margin: 0 0 22px;

    color: var(--text-dark);

    font-size: clamp(2.4rem, 5vw, 4rem);

    line-height: 1.1;
}


.eventos-encabezado h1 span {
    color: var(--primary);
}


.eventos-encabezado p {
    max-width: 780px;

    margin: 0 auto;

    color: var(--text-light);

    font-size: 1.08rem;
    line-height: 1.8;
}



/* --------------------------
   CONTENEDOR
-------------------------- */

.eventos-contenedor {
    max-width: 1250px;

    margin: 0 auto;

    padding: 75px 25px;
}



/* --------------------------
   TÍTULO DEL AÑO
-------------------------- */

.eventos-anio {
    margin-bottom: 40px;
}


.eventos-anio > span {
    color: var(--primary);

    font-size: 0.82rem;
    font-weight: 700;

    text-transform: uppercase;

    letter-spacing: 1.5px;
}


.eventos-anio h2 {
    margin: 5px 0 12px;

    color: var(--primary-dark);

    font-size: 2.3rem;
}


.eventos-linea {
    width: 55px;
    height: 4px;

    background: linear-gradient(
        90deg,
        var(--primary),
        #62a7ff
    );

    border-radius: 20px;
}



/* ==========================================================
   EVENTO PRINCIPAL
========================================================== */

.evento-principal {
    display: grid;

    grid-template-columns: 1.05fr 1fr;

    margin-bottom: 55px;

    background: white;

    border: 1px solid rgba(26, 115, 232, 0.10);

    border-radius: 24px;

    overflow: hidden;

    box-shadow:
        0 15px 45px rgba(12, 71, 161, 0.10);

    transition:
        transform 0.3s ease,
        box-shadow 0.3s ease;
}


.evento-principal:hover {
    transform: translateY(-5px);

    box-shadow:
        0 22px 55px rgba(12, 71, 161, 0.15);
}



/* IMAGEN */

.evento-principal-imagen {
    position: relative;

    min-height: 520px;

    overflow: hidden;
}


.evento-principal-imagen img {
    width: 100%;
    height: 100%;

    display: block;

    object-fit: cover;

    transition: transform 0.6s ease;
}


.evento-principal:hover
.evento-principal-imagen img {
    transform: scale(1.04);
}



/* ETIQUETA PRÓXIMO EVENTO */

.evento-estado {
    position: absolute;

    top: 22px;
    left: 22px;

    padding: 9px 17px;

    background: white;

    color: var(--primary-dark);

    border-radius: 30px;

    font-size: 0.78rem;
    font-weight: 700;

    text-transform: uppercase;

    letter-spacing: 0.7px;

    box-shadow:
        0 5px 18px rgba(0,0,0,0.15);
}



/* INFORMACIÓN */

.evento-principal-info {
    display: flex;

    flex-direction: column;

    justify-content: center;

    padding: 45px;
}


.evento-tipo {
    color: var(--primary);

    font-size: 0.78rem;
    font-weight: 700;

    letter-spacing: 1px;

    text-transform: uppercase;
}


.evento-principal-info h2 {
    margin: 10px 0 25px;

    color: var(--primary-dark);

    font-size: 2.25rem;

    line-height: 1.2;
}


.evento-principal-info p {
    margin: 0 0 17px;

    color: var(--text-light);

    line-height: 1.75;
}



/* DATOS */

.evento-datos {
    display: grid;

    grid-template-columns: 1fr 1fr;

    gap: 12px;

    margin-bottom: 25px;
}


.evento-dato {
    padding: 14px 16px;

    background: #f4f8ff;

    border-radius: 12px;
}


.dato-titulo {
    display: block;

    margin-bottom: 4px;

    color: var(--primary);

    font-size: 0.72rem;
    font-weight: 700;

    text-transform: uppercase;
}


.evento-dato strong {
    color: var(--text-dark);

    font-size: 0.87rem;

    line-height: 1.4;
}



/* BOTÓN PRINCIPAL */

.btn-evento {
    display: inline-flex;

    align-items: center;

    gap: 12px;

    align-self: flex-start;

    margin-top: 10px;

    padding: 13px 23px;

    background:
        linear-gradient(
            135deg,
            var(--primary),
            var(--primary-dark)
        );

    color: white;

    border-radius: 30px;

    text-decoration: none;

    font-size: 0.92rem;
    font-weight: 600;

    transition:
        transform 0.3s ease,
        box-shadow 0.3s ease;
}


.btn-evento:hover {
    transform: translateY(-3px);

    box-shadow:
        0 9px 22px rgba(26,115,232,0.28);
}



/* ==========================================================
   EVENTO HORIZONTAL
========================================================== */

.evento-horizontal {
    display: grid;

    grid-template-columns: 380px 1fr;

    background: #f5f9ff;

    border-radius: 20px;

    overflow: hidden;
}


.evento-horizontal-imagen {
    min-height: 350px;

    overflow: hidden;
}


.evento-horizontal-imagen img {
    width: 100%;
    height: 100%;

    display: block;

    object-fit: cover;

    transition: transform 0.5s ease;
}


.evento-horizontal:hover img {
    transform: scale(1.05);
}


.evento-horizontal-contenido {
    padding: 35px 40px;
}


.evento-superior {
    display: flex;

    justify-content: space-between;

    align-items: center;

    gap: 15px;
}


.evento-realizado {
    padding: 6px 12px;

    background: white;

    color: var(--primary-dark);

    border: 1px solid rgba(26,115,232,0.20);

    border-radius: 20px;

    font-size: 0.75rem;
    font-weight: 600;
}


.evento-horizontal h3 {
    margin: 10px 0 5px;

    color: var(--primary-dark);

    font-size: 1.65rem;
}


.evento-subtitulo {
    margin-bottom: 18px !important;

    color: var(--primary) !important;

    font-size: 0.9rem;

    font-weight: 600;
}


.evento-horizontal p {
    color: var(--text-light);

    line-height: 1.7;
}



/* ETIQUETAS */

.evento-tags {
    display: flex;

    flex-wrap: wrap;

    gap: 8px;

    margin: 20px 0;
}


.evento-tags span {
    padding: 6px 13px;

    background: white;

    color: var(--primary-dark);

    border-radius: 20px;

    font-size: 0.78rem;

    box-shadow:
        0 3px 10px rgba(12,71,161,0.08);
}



/* ENLACES */

.evento-enlace {
    display: inline-block;

    margin-top: 8px;

    color: var(--primary);

    text-decoration: none;

    font-weight: 700;

    transition: transform 0.2s ease;
}


.evento-enlace:hover {
    transform: translateX(4px);
}



/* ==========================================================
   2025
========================================================== */

.eventos-2025 {
    background: #f5f8fc;
}



/* GRID */

.eventos-grid {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 30px;
}



/* TARJETAS */

.evento-card {
    background: white;

    border-radius: 20px;

    overflow: hidden;

    box-shadow:
        0 8px 28px rgba(12,71,161,0.08);

    transition:
        transform 0.3s ease,
        box-shadow 0.3s ease;
}


.evento-card:hover {
    transform: translateY(-6px);

    box-shadow:
        0 15px 35px rgba(12,71,161,0.14);
}



/* IMAGEN */

.evento-card-imagen {
    position: relative;

    height: 300px;

    overflow: hidden;
}


.evento-card-imagen img {
    width: 100%;
    height: 100%;

    display: block;

    object-fit: cover;

    transition: transform 0.5s ease;
}


.evento-card:hover
.evento-card-imagen img {
    transform: scale(1.05);
}


.evento-card-imagen > span {
    position: absolute;

    left: 20px;
    bottom: 20px;

    padding: 8px 14px;

    background: rgba(255,255,255,0.95);

    color: var(--primary-dark);

    border-radius: 25px;

    font-size: 0.75rem;
    font-weight: 700;
}



/* CONTENIDO */

.evento-card-contenido {
    padding: 28px;
}


.evento-card-fecha {
    margin: 0 0 7px;

    color: var(--primary);

    font-size: 0.78rem;

    font-weight: 700;

    letter-spacing: 1px;
}


.evento-card h3 {
    margin: 0 0 8px;

    color: var(--primary-dark);

    font-size: 1.5rem;
}


.evento-card-lugar {
    margin-bottom: 17px;

    color: var(--text-light);

    font-size: 0.85rem;

    font-weight: 600;
}


.evento-card-contenido > p:not(.evento-card-fecha):not(.evento-card-lugar) {
    color: var(--text-light);

    line-height: 1.7;
}



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

@media (max-width: 950px) {

    .evento-principal {
        grid-template-columns: 1fr;
    }


    .evento-principal-imagen {
        min-height: 400px;
    }


    .evento-horizontal {
        grid-template-columns: 1fr;
    }


    .evento-horizontal-imagen {
        height: 400px;
    }

}



@media (max-width: 700px) {

    .eventos-encabezado {
        padding:
            65px 20px
            55px;
    }


    .eventos-encabezado p {
        font-size: 1rem;
    }


    .eventos-contenedor {
        padding:
            55px 18px;
    }


    .evento-principal-info {
        padding: 28px 22px;
    }


    .evento-principal-info h2 {
        font-size: 1.75rem;
    }


    .evento-principal-imagen {
        min-height: 300px;
    }


    .evento-datos {
        grid-template-columns: 1fr;
    }


    .evento-horizontal-contenido {
        padding: 27px 22px;
    }


    .evento-horizontal-imagen {
        height: 300px;
    }


    .evento-superior {
        align-items: flex-start;

        flex-direction: column;
    }


    .eventos-grid {
        grid-template-columns: 1fr;
    }


    .evento-card-imagen {
        height: 260px;
    }

}
/* =====================================================
   ANIMACIONES AL HACER SCROLL
===================================================== */

.reveal {
    opacity: 0;
    transform: translateY(45px);
    transition:
        opacity 0.8s ease,
        transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}


/* Las tarjetas aparecen ligeramente escalonadas */

.eventos-grid .evento-card:nth-child(2) {
    transition-delay: 0.15s;
}


/* Accesibilidad: elimina animaciones si el usuario
   tiene activada la reducción de movimiento */

@media (prefers-reduced-motion: reduce) {

    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }

}
/* =====================================================
   MAYOR CONTRASTE DE TEXTOS - EVENTOS
===================================================== */

/* Texto introductorio */

.eventos-encabezado p {
    color: #374151;
}


/* Descripciones */

.evento-principal-info p,
.evento-horizontal p,
.evento-card-contenido > p {
    color: #374151;
}


/* Lugar y datos secundarios */

.evento-card-lugar {
    color: #4b5563;
}


/* Información de fecha y lugar */

.evento-dato strong {
    color: #1f2937;
}


/* Títulos */

.evento-principal-info h2,
.evento-horizontal h3,
.evento-card h3,
.eventos-anio h2 {
    color: var(--primary-dark);
}

/* =========================================
   POPUP INFORMATIVO - EDUCACIÓN MEDIA
========================================= */

/* Fondo oscuro */
.popup-info {
    display: none;
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.80);
    z-index: 20000;
    justify-content: center;
    align-items: center;
    padding: 15px;
    box-sizing: border-box;
}

/* Mostrar popup */
.popup-info.visible {
    display: flex;
}

/* Ventana del popup */
.popup-info-contenido {
    position: relative;
    background: #ffffff;
    width: 100%;
    max-width: 800px;
    max-height: 92vh;
    overflow-y: auto;
    border-radius: 16px;
    padding: 25px;
    box-sizing: border-box;
    text-align: center;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
    animation: aparecerPopup 0.4s ease;
}

/* Animación de apertura */
@keyframes aparecerPopup {
    from {
        opacity: 0;
        transform: scale(0.92);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Botón cerrar */
.popup-info-cerrar {
    position: absolute;
    top: 10px;
    right: 15px;
    background: transparent;
    border: none;
    color: #333333;
    font-size: 32px;
    font-weight: bold;
    cursor: pointer;
    z-index: 2;
    line-height: 1;
}

.popup-info-cerrar:hover {
    color: #e53935;
}

/* Título principal */
.popup-titulo-principal {
    font-size: 1.5rem;
    color: #173b68;
    margin: 5px 30px 20px;
    font-weight: 700;
}

/* Contenedor de imágenes */
.popup-info-imagenes {
    position: relative;
    width: 100%;
    height: 380px;
    background: #f3f5f8;
    border-radius: 10px;
    overflow: hidden;
}

/* Imágenes */
.popup-info-imagen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease;
}

/* Imagen visible */
.popup-info-imagen.activa {
    opacity: 1;
    visibility: visible;
}

/* Contenedor de descripciones */
.popup-descripciones {
    margin-top: 18px;
    padding: 0 15px;
}

/* Descripción oculta */
.popup-descripcion {
    display: none;
}

/* Descripción visible */
.popup-descripcion.activa {
    display: block;
    animation: aparecerDescripcion 0.6s ease;
}

/* Título del evento */
.popup-descripcion h3 {
    font-size: 1.35rem;
    color: #173b68;
    margin-bottom: 10px;
    font-weight: 700;
}

/* Texto descriptivo */
.popup-descripcion p {
    font-size: 1rem;
    color: #444444;
    line-height: 1.6;
    margin: 0;
}

/* Animación de descripción */
@keyframes aparecerDescripcion {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Indicadores de imágenes */
.popup-info-indicadores {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.popup-info-indicadores span {
    display: block;
    width: 10px;
    height: 10px;
    background: #cccccc;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.popup-info-indicadores span.activo {
    width: 25px;
    border-radius: 10px;
    background: #173b68;
}

/* =========================================
   DISEÑO RESPONSIVE PARA CELULARES
========================================= */

@media (max-width: 600px) {

    .popup-info {
        padding: 10px;
    }

    .popup-info-contenido {
        padding: 18px 12px;
        max-height: 90vh;
        border-radius: 12px;
    }

    .popup-titulo-principal {
        font-size: 1.15rem;
        margin: 12px 25px 15px;
    }

    .popup-info-imagenes {
        height: 260px;
    }

    .popup-descripciones {
        padding: 0 8px;
    }

    .popup-descripcion h3 {
        font-size: 1.1rem;
        color:#000;
    }

    .popup-descripcion p {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .popup-info-cerrar {
        font-size: 28px;
        top: 8px;
        right: 10px;
    }
}


/* ===== CONTACTO EMS21: estilos exclusivos de los dos formularios ===== */
.contact-section.ems-contact { max-width: 920px; width: calc(100% - 32px); margin: 48px auto; padding: clamp(18px, 4vw, 42px); overflow: visible; }
.ems-contact-intro { text-align: center; margin-bottom: 26px; }
.ems-contact .ems-eyebrow { display: inline-block; color: var(--primary); font-size: .85rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 8px; }
.ems-contact .ems-contact-intro h2 { margin: 0 0 12px; }
.ems-contact-intro p { max-width: 700px; margin: auto; color: var(--text-light); }
.ems-form-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 25px 0; }
.ems-form-option { display: flex; align-items: center; text-align: left; gap: 12px; border: 2px solid var(--border-color); border-radius: 14px; background: var(--card-bg); color: var(--text-dark); padding: 17px; cursor: pointer; font: inherit; transition: border-color .2s, background .2s, transform .2s; }
.ems-form-option:hover { border-color: var(--primary); transform: translateY(-2px); }
.ems-form-option.is-active { border-color: var(--primary); background: var(--primary-light); }
.ems-form-option:focus-visible, .ems-contact a:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.ems-option-icon { display: grid; place-items: center; flex: 0 0 43px; height: 43px; background: var(--primary); color: #fff; border-radius: 12px; font-size: 1.4rem; }
.ems-form-option strong, .ems-form-option small { display: block; }
.ems-form-option small { margin-top: 4px; color: var(--text-light); font-size: .84rem; line-height: 1.4; }
.ems-form-panel { border: 1px solid var(--border-color); border-radius: 16px; padding: clamp(16px, 3vw, 30px); background: var(--card-bg); }
.ems-form-panel[hidden] { display: none !important; }
.ems-form-panel h3 { color: var(--primary); font-size: 1.45rem; margin-bottom: 8px; }
.ems-form-panel > p { color: var(--text-light); margin-bottom: 18px; }
.ems-form-panel .ems-form-hint { font-size: .9rem; }
.ems-form-panel .ems-form-warning { padding: 12px 14px; border-left: 4px solid var(--accent); background: var(--bg-light); border-radius: 8px; color: var(--text-dark); }
.ems-form-panel .form-group { margin-bottom: 17px; }
.ems-form-panel .form-group input, .ems-form-panel .form-group select, .ems-form-panel .form-group textarea { display: block; width: 100%; min-height: 46px; padding: 12px 14px; border: 2px solid var(--border-color); border-radius: 8px; background: var(--input-bg); color: var(--text-dark); font: inherit; }
.ems-form-panel .form-group textarea { min-height: 120px; resize: vertical; }
.ems-form-panel .form-group input:focus, .ems-form-panel .form-group select:focus, .ems-form-panel .form-group textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,115,232,.12); }
.ems-form-panel .form-group small { display: block; margin-top: 6px; color: var(--text-light); font-size: .85rem; }
.ems-consent { display: flex; align-items: flex-start; gap: 10px; margin: 20px 0; color: var(--text-dark); line-height: 1.45; cursor: pointer; }
.ems-consent input { flex: 0 0 auto; width: 18px; height: 18px; margin-top: 3px; accent-color: var(--primary); }
.ems-form-panel .btn-enviar { color: #fff; }
.ems-submit-note { margin: 10px 0 0; text-align: center; color: var(--text-light); font-size: .85rem; }
.ems-channels { margin-top: 34px; padding-top: 28px; border-top: 1px solid var(--border-color); text-align: center; }
.ems-channels h3 { color: var(--primary); font-size: 1.5rem; margin-bottom: 10px; }
.ems-channels > p { max-width: 690px; margin: 0 auto 18px; color: var(--text-light); }
.ems-channel-links { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.ems-channel-links a { display: inline-flex; align-items: center; justify-content: center; gap: 9px; padding: 12px 16px; border: 1px solid var(--primary); border-radius: 10px; background: var(--primary); color: #fff; font-weight: 600; text-decoration: none; transition: transform .2s, opacity .2s; }
.ems-channel-links a:hover { transform: translateY(-2px); opacity: .9; }
.ems-channel-links a span { font-size: 1.25rem; }
.ems-channels .ems-channel-email { margin: 17px auto 0; overflow-wrap: anywhere; }
.ems-channel-email a { color: var(--primary); }
@media (max-width: 620px) { .ems-form-options { grid-template-columns: 1fr; } .ems-channel-links { flex-direction: column; } .ems-channel-links a { width: 100%; } }
/* ===== FIN DE CAMBIOS EXCLUSIVOS DE CONTACTO ===== */

/* Ajuste puntual de contraste en botones de contacto */
[data-theme="dark"] .ems-form-option.is-active { color: var(--text-dark); }
.ems-form-option { appearance: none; -webkit-appearance: none; }