/* === Reset & Base === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --indigo-50: #EEF2FF;
  --indigo-100: #E0E7FF;
  --indigo-200: #C7D2FE;
  --indigo-400: #818CF8;
  --indigo-500: #6366F1;
  --indigo-600: #4F46E5;
  --indigo-900: #1E1B4B;
  --indigo-950: #13103A;
  --green-400: #4ADE80;
  --purple-400: #A78BFA;
  --neutral-50: #FAFAF9;
  --neutral-100: #F5F5F4;
  --neutral-200: #E7E5E4;
  --neutral-300: #D6D3D1;
  --neutral-400: #A8A29E;
  --neutral-500: #78716C;
  --neutral-600: #57534E;
  --neutral-700: #44403C;
  --neutral-800: #292524;
  --neutral-900: #1C1917;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--neutral-800);
  background: var(--neutral-50);
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* === Nav === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 250, 249, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 17px;
  color: var(--indigo-900);
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14px;
  font-weight: 500;
  color: var(--neutral-600);
}

.nav-links a:hover {
  color: var(--indigo-500);
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.btn-sm {
  padding: 8px 20px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 15px;
}

.btn-primary {
  background: var(--indigo-500);
  color: #fff;
  box-shadow: 0 2px 12px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
  background: var(--indigo-600);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.45);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--neutral-600);
  border: 1.5px solid var(--neutral-300);
}

.btn-ghost:hover {
  border-color: var(--indigo-400);
  color: var(--indigo-500);
}

.nav-links .btn {
  background: var(--indigo-500);
  color: #fff;
}

.nav-links .btn:hover {
  background: var(--indigo-600);
}

/* === Gradient Text === */
.gradient-text {
  background: linear-gradient(135deg, var(--indigo-500), var(--purple-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* === Hero === */
.hero {
  position: relative;
  padding: 140px 0 80px;
  overflow: hidden;
  background: linear-gradient(180deg, var(--neutral-50) 0%, var(--indigo-50) 100%);
}

.hero-glow {
  position: absolute;
  top: -200px;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  background: rgba(99, 102, 241, 0.1);
  color: var(--indigo-500);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: 52px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--indigo-900);
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 17px;
  color: var(--neutral-500);
  max-width: 460px;
  line-height: 1.7;
  margin-bottom: 32px;
}

.hero-ctas {
  display: flex;
  gap: 12px;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
}

.stat-num {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: var(--indigo-900);
}

.stat-label {
  font-size: 13px;
  color: var(--neutral-500);
}

.stat-divider {
  width: 1px;
  height: 32px;
  background: var(--neutral-300);
}

/* === Phone Mockup === */
.hero-phone {
  display: flex;
  justify-content: center;
}

.phone-frame {
  width: 280px;
  background: var(--indigo-900);
  border-radius: 36px;
  padding: 12px;
  box-shadow:
    0 20px 60px rgba(30, 27, 75, 0.3),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset;
  transform: perspective(800px) rotateY(-5deg) rotateX(2deg);
  transition: transform 0.4s ease;
}

.phone-frame:hover {
  transform: perspective(800px) rotateY(0deg) rotateX(0deg);
}

.phone-screen {
  background: linear-gradient(180deg, #1a1635 0%, var(--indigo-900) 100%);
  border-radius: 26px;
  overflow: hidden;
  padding: 16px;
  min-height: 520px;
}

.mock-status-bar {
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 11px;
  font-weight: 600;
  margin-bottom: 20px;
}

.mock-greeting {
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
  margin-bottom: 4px;
}

.mock-title {
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.mock-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 24px;
  aspect-ratio: 16 / 10;
}

.mock-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mock-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mock-card-cat {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--green-400);
  font-weight: 600;
}

.mock-card-name {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}

.mock-card-dur {
  color: rgba(255, 255, 255, 0.6);
  font-size: 11px;
}

.mock-section-title {
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 10px;
}

.mock-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mock-list-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 12px;
}

.mock-thumb {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
}

.mock-list-text {
  flex: 1;
  min-width: 0;
}

.mock-list-name {
  display: block;
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mock-list-meta {
  font-size: 10px;
  color: rgba(255, 255, 255, 0.4);
}

.mock-play-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--indigo-500);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

/* === Section Shared === */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-badge {
  display: inline-block;
  background: rgba(99, 102, 241, 0.1);
  color: var(--indigo-500);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--indigo-900);
}

.section-sub {
  font-size: 16px;
  color: var(--neutral-500);
  max-width: 480px;
  margin: 16px auto 0;
}

/* === Features === */
.features {
  padding: 100px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: #fff;
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all 0.25s;
}

.feature-card:hover {
  border-color: var(--indigo-200);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.08);
  transform: translateY(-2px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--indigo-50);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--indigo-500);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--indigo-900);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--neutral-500);
  line-height: 1.6;
}

/* === Sessions === */
.sessions {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--neutral-50) 0%, var(--indigo-50) 50%, var(--neutral-50) 100%);
}

.sessions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.session-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  cursor: pointer;
  transition: transform 0.3s;
}

.session-card:hover {
  transform: translateY(-4px);
}

.session-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

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

.session-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px 16px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.75));
  color: #fff;
}

.session-cat {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--green-400);
  font-weight: 600;
}

.session-overlay h4 {
  font-size: 15px;
  font-weight: 600;
  margin: 4px 0 2px;
}

.session-dur {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
}

/* === Categories === */
.categories {
  padding: 80px 0;
}

.categories-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.cat-pill {
  padding: 10px 24px;
  border-radius: var(--radius-full);
  background: #fff;
  border: 1.5px solid var(--neutral-200);
  font-size: 14px;
  font-weight: 500;
  color: var(--neutral-600);
  transition: all 0.2s;
  cursor: pointer;
}

.cat-pill:hover {
  border-color: var(--indigo-400);
  color: var(--indigo-500);
  background: var(--indigo-50);
}

/* === CTA Section === */
.cta-section {
  padding: 100px 0;
}

.cta-inner {
  position: relative;
  background: var(--indigo-900);
  border-radius: 28px;
  padding: 80px 40px;
  text-align: center;
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 300px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.3) 0%, transparent 70%);
  pointer-events: none;
}

.cta-inner h2 {
  font-size: 40px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
}

.cta-inner p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.6);
  max-width: 400px;
  margin: 0 auto 36px;
  position: relative;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  position: relative;
}

.store-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  transition: all 0.2s;
}

.store-badge:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.store-badge small {
  display: block;
  font-size: 10px;
  color: rgba(255, 255, 255, 0.6);
  text-align: left;
}

.store-badge strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
}

/* === Footer === */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--neutral-200);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 16px;
  color: var(--indigo-900);
}

.footer-logo {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.footer-tagline {
  color: var(--neutral-400);
  font-weight: 400;
  font-size: 13px;
}

.footer-links {
  display: flex;
  gap: 24px;
  font-size: 13px;
  color: var(--neutral-500);
}

.footer-links a:hover {
  color: var(--indigo-500);
}

.footer-copy {
  font-size: 12px;
  color: var(--neutral-400);
}

/* === Responsive === */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 42px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .sessions-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 100px 0 60px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-sub {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-ctas {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero h1 {
    font-size: 36px;
  }

  .phone-frame {
    width: 240px;
    transform: none;
  }

  .phone-frame:hover {
    transform: none;
  }

  .section-header h2 {
    font-size: 32px;
  }

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

  .sessions-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cta-inner {
    padding: 60px 24px;
  }

  .cta-inner h2 {
    font-size: 32px;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .nav-links a:not(.btn) {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 30px;
  }

  .hero-stats {
    gap: 16px;
  }

  .stat-num {
    font-size: 20px;
  }

  .sessions-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .phone-frame {
    width: 220px;
  }

  .phone-screen {
    min-height: 440px;
    padding: 12px;
  }
}