/* Homepage — Hero + How it works + Features + Catalog */

/* ══════════════════════════════════════ */
/* HERO                                  */
/* ══════════════════════════════════════ */
.hero {
  text-align: center;
  padding: 72px 24px 56px;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(59, 130, 246, 0.12) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(139, 92, 246, 0.08) 0%, transparent 60%);
  border-radius: var(--radius-lg);
  margin-bottom: 0;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
}
.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 24px;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.25);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
}
.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  margin-bottom: 16px;
  line-height: 1.15;
  color: var(--text);
}
.hero-gradient {
  background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 640px;
  margin-inline: auto;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  padding: 14px 32px;
}
.hero-btn-icon { font-size: 0.9em; }

/* Glow button */
.btn-glow {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border: none;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.btn-glow:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(59, 130, 246, 0.35);
  color: white;
}
.btn-glow::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.12) 50%, transparent 60%);
  animation: shimmer 3s infinite;
}
@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Floating cards in hero */
.hero-visual {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: transform var(--transition), border-color var(--transition);
  animation: float-up 0.6s ease-out both;
}
.hero-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  color: var(--text);
}
.hc-icon { font-size: 1.3rem; }
.hc-1 { animation-delay: 0.1s; }
.hc-2 { animation-delay: 0.2s; }
.hc-3 { animation-delay: 0.3s; }
.hc-4 { animation-delay: 0.4s; }

@keyframes float-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 600px) {
  .hero-title { font-size: 2.2rem; }
  .hero-subtitle { font-size: 1rem; }
  .hero { padding: 48px 16px 40px; }
  .hero-btn { padding: 12px 24px; font-size: 0.9rem; }
}

/* ══════════════════════════════════════ */
/* SECTION TITLES                        */
/* ══════════════════════════════════════ */
.section { margin-top: 56px; }
.section-title {
  font-size: 1.8rem;
  font-weight: 800;
}
.section-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-top: 6px;
}

/* ══════════════════════════════════════ */
/* HOW IT WORKS — STEPS                  */
/* ══════════════════════════════════════ */
.how-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
}
.steps-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.step-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  flex: 1;
  min-width: 200px;
  max-width: 280px;
  position: relative;
  transition: transform var(--transition), border-color var(--transition);
}
.step-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
}
.step-num {
  position: absolute;
  top: -14px;
  right: 50%;
  transform: translateX(50%);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  font-weight: 700;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-icon-big {
  font-size: 2.5rem;
  margin-bottom: 12px;
}
.step-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.step-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.step-arrow {
  font-size: 1.5rem;
  color: var(--text-muted);
  flex-shrink: 0;
}
@media (max-width: 768px) {
  .step-arrow { display: none; }
  .steps-grid { flex-direction: column; }
  .step-card { max-width: 100%; }
}

/* ══════════════════════════════════════ */
/* FEATURES GRID                         */
/* ══════════════════════════════════════ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 28px;
}
@media (max-width: 900px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .features-grid { grid-template-columns: 1fr; } }

.feat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform var(--transition), border-color var(--transition);
}
.feat-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary);
}
.feat-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}
.feat-card h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.feat-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ══════════════════════════════════════ */
/* CREATOR CTA                           */
/* ══════════════════════════════════════ */
.creator-cta-section {
  margin-top: 64px;
}
.creator-cta {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.06), rgba(139, 92, 246, 0.06));
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
}
@media (max-width: 768px) {
  .creator-cta { grid-template-columns: 1fr; padding: 32px 24px; }
}
.creator-cta-text h2 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 14px;
}
.creator-cta-text p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 20px;
}
.creator-perks {
  list-style: none;
  padding: 0;
  margin-bottom: 28px;
}
.creator-perks li {
  padding: 6px 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.creator-perks li::before {
  content: '\2713';
  color: var(--success);
  font-weight: 700;
  font-size: 1rem;
}

/* Pipeline visual */
.cta-pipeline {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.pipe-step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 180px;
  justify-content: center;
  transition: all var(--transition);
}
.pipe-step.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-color: transparent;
  color: white;
  font-weight: 700;
  transform: scale(1.05);
}
.pipe-step span { font-size: 1.2rem; }
.pipe-arrow {
  color: var(--text-muted);
  font-size: 1rem;
}

/* ══════════════════════════════════════ */
/* AI MAGIC SECTION                      */
/* ══════════════════════════════════════ */
.ai-magic-section {
  margin-top: 72px;
}
.ai-magic-container {
  position: relative;
  text-align: center;
  padding: 64px 32px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(139, 92, 246, 0.3);
  background:
    radial-gradient(ellipse 70% 50% at 50% 100%, rgba(139, 92, 246, 0.1) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 20% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 60%),
    var(--bg-card);
  overflow: hidden;
}
.ai-magic-glow {
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--secondary), var(--primary), var(--secondary), transparent);
  animation: glow-pulse 3s ease-in-out infinite;
}
@keyframes glow-pulse {
  0%, 100% { opacity: 0.5; width: 40%; }
  50% { opacity: 1; width: 70%; }
}
.ai-magic-badge {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(59, 130, 246, 0.15));
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: var(--secondary);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  margin-bottom: 28px;
}
.ai-magic-title {
  font-size: 2.8rem;
  font-weight: 900;
  margin-bottom: 18px;
  line-height: 1.2;
  color: var(--text);
}
.ai-magic-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.8;
}
.ai-magic-desc strong {
  color: var(--text);
}
.ai-magic-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
  max-width: 800px;
  margin-inline: auto;
}
.ai-magic-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 16px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.ai-magic-card:hover {
  transform: translateY(-6px);
  border-color: var(--secondary);
  box-shadow: 0 12px 32px rgba(139, 92, 246, 0.15);
}
.ai-magic-card-icon {
  font-size: 2rem;
  margin-bottom: 10px;
}
.ai-magic-card-num {
  font-size: 1.3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}
.ai-magic-card-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}
.ai-magic-proof {
  margin-bottom: 28px;
}
.ai-magic-proof span {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 24px;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: #f87171;
  font-size: 0.9rem;
  font-weight: 600;
  animation: pulse-subtle 2s ease-in-out infinite;
}
@keyframes pulse-subtle {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}
.ai-magic-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
@media (max-width: 768px) {
  .ai-magic-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-magic-title { font-size: 2rem; }
  .ai-magic-container { padding: 40px 20px; }
}
@media (max-width: 480px) {
  .ai-magic-grid { grid-template-columns: 1fr; max-width: 260px; }
  .ai-magic-title { font-size: 1.7rem; }
}

/* ══════════════════════════════════════ */
/* STATS BAR                             */
/* ══════════════════════════════════════ */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding: 36px 24px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}
.stat-item { text-align: center; }
.stat-value {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ══════════════════════════════════════ */
/* BOTTOM CTA                            */
/* ══════════════════════════════════════ */
.bottom-cta {
  text-align: center;
  padding: 56px 24px;
  margin-bottom: 40px;
}
.bottom-cta h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 10px;
}
.bottom-cta p {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* ══════════════════════════════════════ */
/* CHIPS (categories)                    */
/* ══════════════════════════════════════ */
.chip-group {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-decoration: none;
  transition: all var(--transition);
}
.chip:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-bg);
}
.chip-count {
  background: var(--bg-surface);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.75rem;
}

/* ══════════════════════════════════════ */
/* COURSE CARDS                          */
/* ══════════════════════════════════════ */
.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.course-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.course-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 12px 32px rgba(0,0,0,0.25);
  color: inherit;
}
.course-thumb {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.course-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.thumb-text {
  color: white;
  font-size: 1.1rem;
  font-weight: 700;
  text-align: center;
  padding: 16px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.course-card-body { padding: 16px; }
.course-card-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
  line-height: 1.3;
}
.course-card-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.course-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.creator-name { font-weight: 500; }
.course-rating { color: var(--warning); }
.course-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.course-price {
  font-weight: 700;
  font-size: 1rem;
}
.course-price.free {
  color: var(--success);
}
.course-stats {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ══════════════════════════════════════ */
/* CATALOG PAGE                          */
/* ══════════════════════════════════════ */
.catalog-page { }
.catalog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}
.catalog-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
}
@media (max-width: 768px) { .catalog-layout { grid-template-columns: 1fr; } }
.catalog-sidebar h3 {
  font-size: 1rem;
  margin-bottom: 12px;
}
.cat-filter-item {
  display: block;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-decoration: none;
  margin-bottom: 4px;
  transition: all var(--transition);
}
.cat-filter-item:hover { background: var(--bg-hover); color: var(--text); }
.cat-filter-item.active {
  background: var(--primary-bg);
  color: var(--primary);
  font-weight: 600;
}

/* ══════════════════════════════════════ */
/* COURSE DETAIL PAGE                    */
/* ══════════════════════════════════════ */
.course-detail { display: grid; grid-template-columns: 1fr 340px; gap: 32px; }
@media (max-width: 900px) { .course-detail { grid-template-columns: 1fr; } }

.course-sidebar {
  position: sticky;
  top: 88px;
  height: fit-content;
}
.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.sidebar-price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--success);
  margin-bottom: 16px;
}
.sidebar-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.sidebar-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Syllabus */
.syllabus { margin-top: 32px; }
.syllabus-module {
  margin-bottom: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.module-header {
  padding: 14px 16px;
  background: var(--bg-surface);
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  cursor: pointer;
}
.module-header:hover { background: var(--bg-hover); }
.lesson-list { }
.lesson-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  transition: background var(--transition);
}
.lesson-item:hover { background: var(--bg-hover); }
a.lesson-item { text-decoration: none; color: inherit; cursor: pointer; }
a.lesson-item:hover { background: var(--primary-bg); }
a.lesson-item .lesson-title { color: var(--primary); }
.lesson-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  flex-shrink: 0;
}
.lesson-title { flex: 1; }
.lesson-duration { color: var(--text-muted); font-size: 0.8rem; }
.lesson-preview-badge {
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--primary-bg);
  color: var(--primary);
}

/* Reviews */
.review-card {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}
.review-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.review-stars { color: var(--warning); }
.review-author { font-weight: 500; font-size: 0.9rem; }
.review-date { color: var(--text-muted); font-size: 0.8rem; margin-right: auto; }
.review-text { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.5; }