/* ============================================
   QUANTUM ACADEMY - GLOBAL STYLES
   Variables globales para toda la aplicación
============================================ */

@font-face {
  font-family: 'Sora';
  src: url('../assets/fonts/Sora/Sora-VariableFont_wght.ttf') format('truetype');
  font-weight: 100 900;
  font-style: normal;
}

@font-face {
  font-family: 'Outfit';
  src: url('../assets/fonts/Outfit/Outfit-VariableFont_wght.ttf') format('truetype');
  font-weight: 100 900;
  font-style: normal;
}

:root {
  /* === COLORES PRINCIPALES === */
  --color-primary: #000000;
  /* Azul oscuro profundo */
  --color-secondary: #2e6a6c;
  /* Índigo vibrante */
  --color-accent: #2e6a6c;
  /* Púrpura */
  --color-highlight: #2e6a6c;
  /* Cyan */

  /* === COLORES DE FONDO === */
  --bg-primary: #FCF6F3;
  --bg-secondary: #F8FAFC;
  --bg-dark: #0F172A;
  --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);

  /* === COLORES DE TEXTO === */
  --text-primary: #000000;
  --text-secondary: #64748B;
  --text-light: #94A3B8;
  --text-white: #FFFFFF;

  /* === COLORES DE ESTADO === */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;

  /* === TIPOGRAFÍA === */
  --font-primary: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Sora', sans-serif;

  /* === TAMAÑOS DE FUENTE === */
  --font-size-xs: 1rem;
  /* 16px */
  --font-size-sm: 1.125rem;
  /* 18px */
  --font-size-base: 1.25rem;
  /* 20px - ESTÁNDAR AUMENTADO */
  --font-size-lg: 1.5rem;
  /* 24px */
  --font-size-xl: 1.875rem;
  /* 30px */
  --font-size-2xl: 2.25rem;
  /* 36px */
  --font-size-3xl: 3rem;
  /* 48px */
  --font-size-4xl: 4rem;
  /* 64px */
  --font-size-5xl: 5rem;
  /* 80px */
  --font-size-6xl: 6rem;
  /* 96px */
  --font-size-7xl: 7.5rem;
  /* 120px */

  /* === PESOS DE FUENTE === */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* === ESPACIADO === */
  --spacing-xs: 0.5rem;
  /* 8px */
  --spacing-sm: 0.75rem;
  /* 12px */
  --spacing-md: 1rem;
  /* 16px */
  --spacing-lg: 1.5rem;
  /* 24px */
  --spacing-xl: 2rem;
  /* 32px */
  --spacing-2xl: 3rem;
  /* 48px */
  --spacing-3xl: 4rem;
  /* 64px */
  --spacing-4xl: 6rem;
  /* 96px */
  --spacing-5xl: 8rem;
  /* 128px */

  /* === BORDER RADIUS === */
  --radius-sm: 0.375rem;
  /* 6px */
  --radius-md: 0.5rem;
  /* 8px */
  --radius-lg: 0.75rem;
  /* 12px */
  --radius-xl: 1rem;
  /* 16px */
  --radius-2xl: 1.5rem;
  /* 24px */
  --radius-full: 9999px;

  /* === SOMBRAS === */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* === TRANSICIONES === */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;

  /* === CONTENEDORES === */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1400px;

  /* === Z-INDEX === */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

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

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-extrabold);
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-5xl);
}

h2 {
  font-size: var(--font-size-4xl);
}

h3 {
  font-size: var(--font-size-3xl);
}

h4 {
  font-size: var(--font-size-2xl);
}

h5 {
  font-size: var(--font-size-xl);
}

h6 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ============================================
   CONTENEDORES
============================================ */

.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-lg);
}

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

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-xl);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-secondary);
  color: var(--text-white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: var(--color-accent);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

.btn-tertiary {
  background-color: transparent;
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 4px;
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-sm) 0;
}

.btn-tertiary:hover {
  color: var(--color-secondary);
}

.btn-large {
  padding: var(--spacing-md) var(--spacing-2xl);
  font-size: var(--font-size-lg);
}

.btn-small {
  padding: var(--spacing-xs) var(--spacing-lg);
  font-size: var(--font-size-sm);
}

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

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: var(--z-fixed);
  transition: all var(--transition-base);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: var(--container-xl);
  margin: 0 auto;
}

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

.nav-logo img {
  height: 80px;
  width: auto;
}

.footer-brand img {
  height: 120px;
  width: auto;
  margin-bottom: var(--spacing-sm);
}

.nav-links {
  display: flex;
  gap: var(--spacing-xl);
  list-style: none;
}

.nav-link {
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-secondary);
}

/* ============================================
   SECCIONES
============================================ */

.section {
  padding: var(--spacing-5xl) 0;
}

.section-sm {
  padding: var(--spacing-3xl) 0;
}

.section-lg {
  padding: var(--spacing-5xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
  max-width: 700px;
  margin: 0 auto var(--spacing-2xl);
}

/* ============================================
   UTILITIES
============================================ */

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

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

.text-right {
  text-align: right;
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.mb-2xl {
  margin-bottom: var(--spacing-2xl);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mt-xl {
  margin-top: var(--spacing-xl);
}

.mt-2xl {
  margin-top: var(--spacing-2xl);
}

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

/* Mobile Background Logic */
.section,
.hero {
  background-image: var(--bg-desk);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

@media (max-width: 768px) {
  :root {
    /* Responsive Typography */
    --font-size-7xl: 3.5rem;
    --font-size-6xl: 3rem;
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.5rem;
    --font-size-xl: 1.25rem;
    --font-size-lg: 1.125rem;
    --font-size-base: 1rem;

    /* Responsive Spacing */
    --spacing-5xl: 4rem;
    --spacing-4xl: 3rem;
    --spacing-3xl: 2.5rem;
  }

  /* Apply Mobile Background — never show desktop image on mobile */
  .section,
  .hero {
    background-image: var(--bg-mob, none);
    background-color: var(--bg-mob-color, transparent);
  }

  .nav-links {
    display: none;
  }

  .section {
    padding: var(--spacing-3xl) 0;
  }

  /* Flexible Layouts */
  .container {
    padding: 0 var(--spacing-md);
  }

  /* Touch-Friendly Buttons */
  .btn {
    width: 100%;
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }
}

/* ============================================
   COMMON NAVIGATION & FOOTER (MOVED FROM HOME)
============================================ */

/* === NAVIGATION MOBILE === */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  transition: all var(--transition-base);
}

/* === FOOTER === */
.footer {
  background-color: var(--bg-primary);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  gap: var(--spacing-xl);
}

.footer-brand h3 {
  font-size: var(--font-size-xl);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
}

.footer-logo img {
  height: 120px;
  width: auto;
  margin-bottom: var(--spacing-sm);
}

.footer-links {
  display: flex;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
  list-style: none;
  /* Asegurar que no tenga puntos de lista */
}

.footer-links a {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-secondary);
}

.footer-bottom {
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  padding-top: var(--spacing-lg);
  text-align: center;
}

.footer-bottom p {
  color: var(--text-light);
  font-size: var(--font-size-sm);
  margin: 0;
}

/* === FOOTER SOCIAL MEDIA === */
.footer-social {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
  flex-wrap: wrap;
}

.footer-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  background-color: rgba(46, 106, 108, 0.08);
  color: var(--text-secondary);
  transition: all var(--transition-base);
  position: relative;
  z-index: 2;
  cursor: pointer;
}

.footer-social-link:hover {
  background-color: var(--color-secondary);
  color: var(--text-white);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.footer-social-link svg {
  width: 18px;
  height: 18px;
  pointer-events: none;
}

/* === FOOTER LEGAL LINKS === */
.footer-legal {
  text-align: center;
  padding: var(--spacing-md) 0;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  margin-bottom: var(--spacing-sm);
}

.footer-legal a {
  color: var(--text-light);
  font-size: var(--font-size-xs);
  transition: color var(--transition-fast);
}

.footer-legal a:hover {
  color: var(--color-secondary);
}

.footer-legal-divider {
  color: var(--text-light);
  margin: 0 var(--spacing-sm);
  font-size: var(--font-size-xs);
}

/* === SHARED RESPONSIVE FOR COMMON ELEMENTS === */
@media (max-width: 768px) {
  .nav-container {
    padding: 0 5% !important;
    height: 75px !important;
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    width: 100% !important;
  }

  /* SIDE DRAWER STYLES (MATCHING DARIUS-GANT) */
  .nav-links {
    position: fixed !important;
    top: 0 !important;
    right: -100% !important;
    width: 80% !important;
    height: 100vh !important;
    background: #ffffff !important;
    flex-direction: column !important;
    justify-content: center !important;
    align-items: center !important;
    gap: 2rem !important;
    padding: 2rem !important;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.1) !important;
    transition: 0.4s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    opacity: 0;
    visibility: hidden;
    z-index: 1000 !important;
    list-style: none;
    display: flex;
    /* Force display for flex layout */
  }

  .nav-links.active {
    right: 0 !important;
    opacity: 1 !important;
    visibility: visible !important;
  }

  .nav-links li {
    width: 100%;
    text-align: center;
  }

  .nav-links li a {
    font-size: 1.5rem !important;
    font-weight: 500;
    display: block;
    color: var(--text-dark);
    text-decoration: none;
  }

  /* Mobile CTA inside Nav (Match Darius-Gant) */
  .nav-links li.enroll-btn-container,
  .nav-links li:last-child {
    margin-top: 2rem !important;
    width: 100% !important;
  }

  .nav-links .enroll-btn-container a,
  .nav-links li:last-child a {
    background: var(--color-secondary) !important;
    color: #ffffff !important;
    padding: 1.2rem !important;
    border-radius: 50px !important;
    font-weight: 600;
    text-align: center;
  }

  .nav-toggle {
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    align-items: flex-end !important;
    cursor: pointer !important;
    z-index: 1001 !important;
    padding: 10px !important;
    background: none;
    border: none;
    order: 2 !important;
    /* Force to right side */
  }

  .nav-toggle span {
    width: 30px !important;
    height: 3px !important;
    background: var(--text-dark) !important;
    margin: 3px 0 !important;
    transition: 0.3s !important;
  }

  .nav-logo {
    order: 1 !important;
    /* Force to left side */
    margin-right: auto !important;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

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

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

/* === BACK TO TOP BUTTON === */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  background-color: var(--color-secondary);
  color: var(--text-white);
  border: none;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
}

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

.back-to-top:hover {
  background-color: var(--color-accent);
  transform: translateY(-4px);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}