/* Academia Artic Dynamics - Estilos principales */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
  --primary: #E60000;
  --primary-dark: #cc0000;
  --primary-light: #ff3333;
  --dark: #0a0a0f;
  --dark-soft: #12121a;
  --gray-50: #f8f9fc;
  --gray-100: #f1f3f8;
  --gray-200: #e4e7ed;
  --gray-300: #d1d5df;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --white: #ffffff;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 40px -10px rgba(0,0,0,0.15);
  --glow-red: 0 0 40px rgba(230,0,0,0.3);
  --glass: rgba(255,255,255,0.03);
  --glass-border: rgba(255,255,255,0.08);
  --card-bg: rgba(255,255,255,0.04);
  --card-border: rgba(255,255,255,0.08);
  --text-primary: rgba(255,255,255,0.95);
  --text-secondary: rgba(255,255,255,0.7);
  --text-muted: rgba(255,255,255,0.5);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  color: var(--text-primary);
  background: var(--dark);
  background-image: 
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 56px 56px;
  background-attachment: fixed;
  line-height: 1.6;
  min-height: 100vh;
}

/* Header - glassmorphism tech */
.site-header {
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: white;
  padding: 0 1.5rem;
  height: 64px;
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 800;
  font-size: 1.25rem;
  color: white;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo:hover {
  color: var(--primary);
  transition: color 0.2s;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-header nav a {
  color: rgba(255,255,255,0.9);
  text-decoration: none;
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.site-header nav a:hover {
  color: white;
  background: rgba(255,255,255,0.08);
}

.site-header nav .btn-primary {
  background: var(--primary);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
}

.site-header nav .btn-primary:hover {
  background: var(--primary-light);
  color: white;
}

.header-search {
  flex: 1;
  max-width: 400px;
  margin: 0 2rem;
}
.header-search input {
  width: 100%;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.08);
  color: white;
  font-size: 0.9rem;
}
.header-search input::placeholder { color: rgba(255,255,255,0.5); }

.header-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.5rem;
}
.header-user-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.65rem 0.35rem 0.35rem;
  border-radius: var(--radius-sm);
  max-width: 220px;
}
.header-user-chip:hover {
  color: white;
  background: rgba(255,255,255,0.1);
}
.header-avatar-img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(255,255,255,0.2);
  flex-shrink: 0;
}
.header-avatar-fallback {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #8b0000);
  color: white;
  font-size: 0.8rem;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.header-user-text {
  font-size: 0.88rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: rgba(255,255,255,0.95);
}

/* Perfil (dentro del layout principal) */
.profile-main .section-header { margin-bottom: 1.5rem; }
.profile-editor-card {
  max-width: 560px;
  padding: 1.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
}
.profile-avatar-row {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.profile-avatar-preview {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--card-border);
}
.profile-avatar-preview--fallback {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), #6a0000);
  color: white;
  font-size: 2rem;
  font-weight: 800;
}
.profile-avatar-fields { flex: 1; min-width: 200px; }
.profile-avatar-fields label { display: block; font-size: 0.9rem; margin-bottom: 0.35rem; color: var(--text-secondary); }
.profile-avatar-fields input[type="file"] {
  width: 100%;
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.profile-remove-avatar {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
  cursor: pointer;
}
.profile-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}
@media (max-width: 520px) {
  .profile-form-grid { grid-template-columns: 1fr; }
}
.profile-editor-form label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.profile-editor-form input:not([type="file"]),
.profile-editor-form textarea,
.input-disabled {
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  background: rgba(255,255,255,0.06);
  color: var(--text-primary);
  font-size: 1rem;
}
.input-disabled { opacity: 0.7; cursor: not-allowed; }
.profile-editor-form textarea { resize: vertical; min-height: 100px; }
.text-soft { font-weight: 400; opacity: 0.75; }

/* Main content */
.site-main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  min-height: calc(100vh - 180px);
  color: var(--text-primary);
}
.site-main > p,
.site-main p {
  color: var(--text-secondary);
}
.site-main a:not(.btn):not(.course-card):not(.school-card) {
  color: var(--primary-light);
  text-decoration: none;
}
.site-main a:not(.btn):not(.course-card):not(.school-card):hover {
  text-decoration: underline;
}

/* Landing - estilo Platzi */
.site-main.landing-main { max-width: 100%; padding: 0; }

.landing-hero {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  padding: 5rem 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.landing-hero-inner {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.landing-hero h1 {
  margin: 0 0 1rem;
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
}
.landing-hero h1 .highlight { color: var(--primary); }
.landing-hero p {
  margin: 0 0 1.5rem;
  font-size: 1.1rem;
  color: rgba(255,255,255,0.8);
}
.hero-search {
  display: flex;
  gap: 0.5rem;
  max-width: 560px;
  margin: 0 auto 1.5rem;
}
.hero-search input {
  flex: 1;
  padding: 0.875rem 1.25rem;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.05);
  color: white;
  font-size: 1rem;
  transition: all 0.3s ease;
}
.hero-search input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(230,0,0,0.2);
}
.hero-search input::placeholder { color: rgba(255,255,255,0.5); }
.hero-search .btn { flex-shrink: 0; }
.landing-hero .user-greeting {
  margin-top: 1rem;
  font-size: 0.95rem;
  color: rgba(255,255,255,0.9);
}
.landing-hero .user-greeting a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}
.landing-hero .alert-success { max-width: 100%; }

.hero-ecosystem {
  margin: 2rem 0 0;
  font-size: 0.95rem;
  color: rgba(255,255,255,0.7);
}
.hero-ecosystem a {
  color: var(--primary-light);
  text-decoration: underline;
  font-weight: 600;
}
.hero-ecosystem a:hover {
  color: white;
}

.landing-section {
  padding: 3rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}
.landing-schools {
  color: white;
  position: relative;
}
.landing-schools h2 {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
  font-weight: 800;
  text-align: center;
  letter-spacing: -0.02em;
  position: relative;
}
.schools-subtitle {
  margin: 0 0 2rem;
  text-align: center;
  color: rgba(255,255,255,0.7);
  font-size: 1rem;
}
.schools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  position: relative;
  z-index: 1;
}
.school-card {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding: 1.5rem;
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.08);
  text-decoration: none;
  color: white;
  transition: all 0.3s ease;
}
.school-card-roadmap {
  flex-direction: column;
  align-items: stretch;
  padding: 1.75rem;
}
.school-card-roadmap .school-icon {
  align-self: flex-start;
  margin-bottom: 0.25rem;
}
.school-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(230,0,0,0.35);
  box-shadow: 0 8px 32px rgba(0,0,0,0.2), 0 0 0 1px rgba(230,0,0,0.1);
  transform: translateY(-2px);
}
.school-icon {
  width: 52px;
  height: 52px;
  min-width: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius-sm);
  font-weight: 800;
  font-size: 1.25rem;
  box-shadow: 0 4px 16px rgba(230,0,0,0.25);
  flex-shrink: 0;
}
.school-body {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 0;
}
.school-name {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.school-goal {
  font-size: 0.9rem;
  color: var(--primary-light);
  font-weight: 600;
}
.school-techs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0.5rem 0;
}
.school-tech {
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  color: rgba(255,255,255,0.9);
  transition: all 0.2s;
}
.school-card:hover .school-tech {
  background: rgba(230,0,0,0.1);
  border-color: rgba(230,0,0,0.25);
  color: white;
}
.school-link {
  font-size: 0.9rem;
  color: var(--primary-light);
  font-weight: 500;
  transition: color 0.2s;
  margin-top: 0.25rem;
}
.school-card:hover .school-link { color: #ff6666; }

/* Instructores */
.landing-instructors {
  color: white;
  position: relative;
}
.landing-instructors h2 {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
  font-weight: 800;
  text-align: center;
  letter-spacing: -0.02em;
  position: relative;
  z-index: 1;
}
.landing-instructors > p {
  margin: 0 auto 2.5rem;
  text-align: center;
  color: rgba(255,255,255,0.75);
  font-size: 1.05rem;
  max-width: 560px;
  position: relative;
  z-index: 1;
  line-height: 1.5;
}
.instructors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 300px));
  gap: 2rem;
  justify-content: center;
  position: relative;
  z-index: 1;
}
.instructor-card {
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.08);
  transition: all 0.3s ease;
  position: relative;
}
.instructor-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  border-radius: 2px;
  opacity: 0;
  transition: opacity 0.3s;
}
.instructor-card:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(230,0,0,0.3);
  box-shadow: 0 12px 40px rgba(0,0,0,0.25), 0 0 30px rgba(230,0,0,0.1);
  transform: translateY(-4px);
}
.instructor-card:hover::after {
  opacity: 1;
}
.instructor-avatar {
  width: 88px;
  height: 88px;
  margin: 0 auto 1.25rem;
  background: linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(255,255,255,0.9) 100%);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  box-shadow: 0 4px 24px rgba(230,0,0,0.25), 0 0 0 3px rgba(255,255,255,0.1);
  transition: all 0.3s ease;
}
.instructor-card:hover .instructor-avatar {
  transform: scale(1.06);
  box-shadow: 0 6px 28px rgba(230,0,0,0.35), 0 0 0 3px rgba(230,0,0,0.2);
}
.instructor-info {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.instructor-info strong {
  display: block;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.instructor-info span {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

/* Testimonios */
.landing-testimonials {
  color: white;
  position: relative;
}
.landing-testimonials h2 { margin: 0 0 0.5rem; font-size: 1.75rem; font-weight: 800; text-align: center; letter-spacing: -0.02em; position: relative; z-index: 1; }
.landing-testimonials > p { margin: 0 0 2rem; text-align: center; color: rgba(255,255,255,0.75); position: relative; z-index: 1; }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  position: relative;
  z-index: 1;
}
.testimonial-card {
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid rgba(255,255,255,0.08);
  position: relative;
  transition: all 0.3s ease;
}
.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 1rem;
  left: 1.25rem;
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  color: rgba(230,0,0,0.2);
  font-family: Georgia, serif;
}
.testimonial-card:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(230,0,0,0.2);
  box-shadow: 0 8px 32px rgba(0,0,0,0.15), 0 0 20px rgba(230,0,0,0.05);
  transform: translateY(-2px);
}
.testimonial-content {
  margin-bottom: 1.25rem;
  font-style: italic;
  color: rgba(255,255,255,0.92);
  font-size: 1.02rem;
  line-height: 1.6;
  padding-left: 0.5rem;
}
.testimonial-author { display: flex; flex-direction: column; gap: 0.15rem; }
.testimonial-name { font-weight: 600; font-size: 1rem; }
.testimonial-role { font-size: 0.9rem; color: rgba(255,255,255,0.6); }

/* Planes y precios */
.landing-pricing {
  color: white;
  position: relative;
}
.landing-pricing h2 { margin: 0 0 0.5rem; font-size: 1.75rem; font-weight: 800; text-align: center; color: white; }
.landing-pricing > p { margin: 0 0 2rem; text-align: center; color: var(--text-secondary); }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  position: relative;
  z-index: 1;
}
.pricing-card {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--card-border);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  color: white;
}
.pricing-card.featured { border-color: var(--primary); box-shadow: 0 0 0 2px var(--primary); }
.pricing-badge {
  position: absolute;
  top: -10px;
  background: var(--primary);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}
.pricing-card h3 { margin: 0 0 0.5rem; font-size: 1.25rem; }
.pricing-tier-list {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  width: 100%;
  text-align: left;
}
.pricing-tier-item {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--card-border);
  font-size: 0.95rem;
}
.pricing-tier-item:last-child { border-bottom: none; }
.pricing-tier-label { color: var(--text-secondary); font-weight: 600; }
.pricing-tier-amount { font-weight: 800; color: var(--primary-light); font-size: 1.05rem; }
.pricing-tier-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-light);
  text-decoration: none;
  white-space: nowrap;
}
.pricing-tier-link:hover { text-decoration: underline; color: white; }
.pricing-price { font-size: 2rem; font-weight: 800; color: var(--primary); margin-bottom: 1rem; }
.pricing-features {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  text-align: left;
  width: 100%;
}
.pricing-features li { padding: 0.35rem 0; font-size: 0.95rem; color: var(--text-secondary); }
.pricing-features a { color: var(--primary-light); }

.landing-cta {
  color: white;
  padding: 5rem 1.5rem;
  text-align: center;
  position: relative;
}
.landing-cta-inner { position: relative; z-index: 1; }
.landing-cta h2 { margin: 0 0 0.5rem; font-size: 2rem; font-weight: 800; letter-spacing: -0.03em; }
.landing-cta p { margin: 0 0 2rem; color: rgba(255,255,255,0.75); font-size: 1.05rem; }
.landing-cta .btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  box-shadow: var(--glow-red);
  transition: all 0.3s ease;
}
.landing-cta .btn-lg:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 60px rgba(230,0,0,0.4);
}
.btn-lg { padding: 0.875rem 2rem; font-size: 1.1rem; }
.admin-quick-link {
  padding: 1rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}
.admin-quick-link .btn-secondary { background: var(--card-bg); color: white; border: 1px solid var(--card-border); }
.admin-quick-link .btn-secondary:hover { background: rgba(255,255,255,0.1); color: white; }

/* Hero legacy (para otras vistas) */
.hero {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-soft) 100%);
  color: white;
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  margin-bottom: 2.5rem;
  position: relative;
  overflow: hidden;
}
.hero h1 { margin: 0 0 0.75rem; font-size: 2.25rem; font-weight: 800; }
.hero p { margin: 0 0 1.5rem; font-size: 1.1rem; color: rgba(255,255,255,0.85); }
.hero .btn-primary { display: inline-flex; padding: 0.75rem 1.5rem; }
.hero .user-greeting a { color: var(--primary); text-decoration: none; font-weight: 600; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  font-size: 0.9rem;
  font-family: inherit;
  transition: all 0.2s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(230,0,0,0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
  color: white;
  box-shadow: 0 6px 20px rgba(230,0,0,0.35);
}

.btn-secondary {
  background: rgba(255,255,255,0.1);
  color: white;
  border: 1px solid rgba(255,255,255,0.2);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.18);
  color: white;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
}

/* Alerts */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.alert-success {
  background: rgba(34,197,94,0.15);
  color: #86efac;
  border: 1px solid rgba(34,197,94,0.3);
}

.alert-danger {
  background: rgba(239,68,68,0.15);
  color: #fca5a5;
  border: 1px solid rgba(239,68,68,0.3);
}

.alert-info {
  background: rgba(59,130,246,0.15);
  color: #93c5fd;
  border: 1px solid rgba(59,130,246,0.3);
}

/* Catalog - Course cards */
.section-header {
  margin-bottom: 1.5rem;
}

.section-header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
}

.section-header p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 1rem;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.course-card {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.25s ease;
  text-decoration: none;
  color: inherit;
  display: block;
  border: 1px solid var(--card-border);
}

.course-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3), 0 0 0 1px rgba(230,0,0,0.2);
  border-color: rgba(230,0,0,0.3);
}

.course-card .cover {
  height: 180px;
  background: linear-gradient(135deg, var(--dark) 0%, var(--gray-700) 100%);
  position: relative;
}

.course-card .cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.3) 100%);
}

.course-card .body {
  padding: 1.25rem;
}

.course-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
}

.course-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.course-card .meta {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.course-card .price {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--primary);
  margin-top: 0.75rem;
}

/* Student dashboard */
.enrollment-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.enrollment-card {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  border: 1px solid var(--card-border);
  transition: all 0.2s;
}

.enrollment-card:hover {
  border-color: rgba(230,0,0,0.3);
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

.enrollment-card .cover-mini {
  width: 140px;
  height: 80px;
  background: linear-gradient(135deg, var(--dark) 0%, var(--gray-700) 100%);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.enrollment-card .progress-bar {
  height: 8px;
  background: rgba(255,255,255,0.1);
  border-radius: 4px;
  margin-top: 0.75rem;
  overflow: hidden;
}

.enrollment-card .progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: 4px;
  transition: width 0.3s ease;
}

/* Course content - Módulos y lecciones */
.module-section {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
  border: 1px solid var(--card-border);
}

.module-section h3 {
  margin: 0;
  padding: 1rem 1.25rem;
  background: rgba(255,255,255,0.04);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.lesson-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.lesson-list li {
  border-top: 1px solid var(--card-border);
}

.lesson-list a {
  display: flex;
  align-items: center;
  padding: 0.875rem 1.25rem;
  text-decoration: none;
  color: var(--text-primary);
  transition: background 0.2s;
}

.lesson-list a:hover {
  background: rgba(255,255,255,0.06);
}

.lesson-list .completed {
  color: var(--primary);
  font-weight: 600;
}

.lesson-list .duration {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-left: auto;
}
.lesson-list li span {
  display: flex;
  align-items: center;
  padding: 0.875rem 1.25rem;
  color: var(--text-muted);
}

/* Lesson view */
.lesson-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2rem;
}

@media (max-width: 900px) {
  .lesson-layout {
    grid-template-columns: 1fr;
  }
}

.lesson-main {
  min-width: 0;
}

.video-container {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  background: #000;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-lg);
}

.video-container iframe,
.video-container video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* YouTube: iframe API + controles propios; escudo evita clics en la UI del embed */
.video-container.video-container--youtube-custom .custom-yt-root {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.video-container.video-container--youtube-custom .custom-yt-frame {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 180px;
}

.video-container.video-container--youtube-custom .custom-yt-placeholder {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.video-container.video-container--youtube-custom .custom-yt-placeholder iframe {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
  border: 0;
  pointer-events: none;
}

.video-container.video-container--youtube-custom .custom-yt-shield {
  position: absolute;
  inset: 0;
  z-index: 2;
  cursor: default;
}

.video-container.video-container--youtube-custom .custom-yt-controls {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.65rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.82));
}

.video-container.video-container--youtube-custom .custom-yt-progress-wrap {
  flex: 1;
  position: relative;
  height: 10px;
  cursor: pointer;
  min-width: 48px;
}

.video-container.video-container--youtube-custom .custom-yt-progress-bg {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.22);
  border-radius: 4px;
}

.video-container.video-container--youtube-custom .custom-yt-progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 0%;
  max-width: 100%;
  background: var(--primary);
  border-radius: 4px;
  pointer-events: none;
}

.video-container.video-container--youtube-custom .custom-yt-btn {
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.14);
  border: none;
  color: #fff;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.95rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.video-container.video-container--youtube-custom .custom-yt-btn:hover {
  background: rgba(255, 255, 255, 0.26);
}

.video-container.video-container--youtube-custom .custom-yt-time {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.92);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.lesson-sidebar {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  height: fit-content;
  position: sticky;
  top: 1rem;
  border: 1px solid var(--card-border);
}

.lesson-sidebar h4 {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.lesson-sidebar .lesson-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 400px;
  overflow-y: auto;
}

.lesson-sidebar .lesson-nav li {
  border-bottom: 1px solid var(--card-border);
}

.lesson-sidebar .lesson-nav a {
  display: block;
  padding: 0.6rem 0;
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.lesson-sidebar .lesson-nav a:hover {
  color: var(--primary);
}

.lesson-sidebar .lesson-nav .current {
  font-weight: 600;
  color: var(--primary);
}

/* Footer - estilo Platzi */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 2.5rem 1.5rem 0;
  margin-top: 2rem;
  font-size: 0.9rem;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
}
.footer-brand strong { display: block; color: white; margin-bottom: 0.5rem; }
.footer-brand a { color: var(--primary); text-decoration: none; }
.footer-brand a:hover { text-decoration: underline; }
.footer-links { display: flex; gap: 2rem; flex-wrap: wrap; }
.footer-col h4 {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.9);
  text-transform: uppercase;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  margin-bottom: 0.4rem;
}
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  margin-top: 2rem;
  padding: 1rem 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  color: rgba(255,255,255,0.5);
  font-size: 0.85rem;
}

/* Suscripción / Culqi */
.subscription-plans-pick {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}
.subscription-plan-option {
  cursor: pointer;
  display: block;
}
.subscription-plan-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.subscription-plan-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border: 2px solid var(--card-border);
  background: var(--card-bg);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.subscription-plan-option input:checked + .subscription-plan-card {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px rgba(230,0,0,0.25);
}
.subscription-plan-price {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary-light);
}
.subscription-plan-warn {
  font-size: 0.8rem;
  color: #fca5a5;
}
.subscription-billing-title {
  font-size: 1.1rem;
  margin: 1.5rem 0 0.75rem;
}
.subscription-billing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}
.subscription-billing-grid label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.subscription-billing-grid input {
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  background: rgba(255,255,255,0.06);
  color: var(--text-primary);
}
.subscription-tyc {
  margin: 1rem 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
}
.subscription-pay-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin-top: 0.5rem;
}
.pe-pending-card {
  max-width: 32rem;
  margin: 0 auto 1.5rem;
  padding: 1.75rem;
  border-radius: var(--radius-md);
  border: 2px solid rgba(255, 204, 0, 0.45);
  background: rgba(255, 204, 0, 0.08);
  text-align: center;
}
.pe-pending-label {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.pe-pending-cip {
  margin: 0 0 1rem;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  font-variant-numeric: tabular-nums;
  color: #ffcc00;
  word-break: break-all;
}
.pe-pending-amount { margin: 0 0 0.35rem; font-size: 1.1rem; }
.pe-pending-expires { margin: 0; font-size: 0.9rem; color: var(--text-secondary); }
.pe-pending-id {
  margin: 1rem 0 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.pe-pending-id code {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
}
.pe-pending-help { max-width: 40rem; margin-left: auto; margin-right: auto; }
.pe-official-link {
  margin: 0.75rem 0 0;
  font-size: 0.95rem;
}
.pe-official-link a { color: var(--primary-light); }
.pe-official-link a:hover { color: #fff; text-decoration: underline; }
.pe-hosted-hero {
  margin: 1rem 0 0;
}
.pe-hosted-hero .btn { display: inline-flex; }
.pe-pending-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  align-items: center;
  margin-top: 1.5rem;
}

/* WhatsApp floating button */
.whatsapp-fab {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 56px;
  height: 56px;
  background: #25D366;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,0.5), 0 0 30px rgba(37,211,102,0.3);
  transition: transform 0.2s, box-shadow 0.2s;
  z-index: 999;
  text-decoration: none;
}
.whatsapp-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px rgba(37,211,102,0.6), 0 0 40px rgba(37,211,102,0.4);
  color: white;
}
.whatsapp-fab svg {
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .footer-inner { grid-template-columns: 1fr; }
  .header-search { display: none; }
}