@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap");

/* =============================================
   SPOTIFY UHD — Custom Properties
   ============================================= */
:root {
  --sp-black: #121212;
  --sp-dark: #191414;
  --sp-surface: #1a1a1a;
  --sp-surface-hover: #282828;
  --sp-border: rgba(255, 255, 255, 0.08);
  --sp-green: #1db954;
  --sp-green-dark: #1aa34a;
  --sp-green-glow: rgba(29, 185, 84, 0.25);
  --sp-green-subtle: rgba(29, 185, 84, 0.08);
  --sp-purple: #8b5cf6;
  --sp-purple-glow: rgba(139, 92, 246, 0.2);
  --sp-text: #ffffff;
  --sp-muted: #b3b3b3;
  --sp-dim: #535353;
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-hover: rgba(255, 255, 255, 0.07);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 36px;
}

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

html {
  scroll-behavior: auto;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--sp-black);
  color: var(--sp-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  line-height: 1.6;
}

/* =============================================
   CANVAS BACKGROUND
   ============================================= */
#mesh-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* =============================================
   UTILITY CLASSES
   ============================================= */
.reveal {
  opacity: 0;
  transform: translateY(30px);
}

section {
  position: relative;
  z-index: 1;
  padding: 120px 1.5rem;
}

.section-container {
  max-width: 72rem;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 3.5rem;
}

.section-title {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 1.25rem;
  background: linear-gradient(180deg, #ffffff 0%, #a0a0a0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-desc {
  font-size: 1.15rem;
  color: var(--sp-muted);
  max-width: 520px;
  line-height: 1.6;
}

/* =============================================
   TAGS
   ============================================= */
.tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 1.5rem;
}

.tag-green {
  background: var(--sp-green-subtle);
  color: var(--sp-green);
  border: 1px solid rgba(29, 185, 84, 0.15);
}

/* =============================================
   BUTTONS
   ============================================= */
.btn-primary {
  display: inline-block;
  padding: 16px 40px;
  border-radius: 500px;
  font-weight: 700;
  font-size: 1rem;
  font-family: inherit;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  letter-spacing: 0.01em;
}

.btn-green {
  background: var(--sp-green);
  color: #000;
}

.btn-green:hover {
  background: #1ed760;
  transform: scale(1.04);
  box-shadow: 0 8px 30px var(--sp-green-glow);
}

.btn-secondary {
  display: inline-block;
  padding: 16px 40px;
  border-radius: 500px;
  font-weight: 700;
  font-size: 1rem;
  font-family: inherit;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  background: transparent;
  color: var(--sp-text);
  border: 2px solid rgba(255, 255, 255, 0.3);
  letter-spacing: 0.01em;
}

.btn-secondary:hover {
  border-color: #fff;
  transform: scale(1.04);
}

.btn-glow {
  box-shadow: 0 0 40px var(--sp-green-glow), 0 0 80px rgba(29, 185, 84, 0.1);
}

/* =============================================
   GLASS CARD
   ============================================= */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 48px;
  transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.glass-card:hover {
  background: var(--glass-hover);
  border-color: rgba(255, 255, 255, 0.14);
}

/* =============================================
   SECTION 1: HERO
   ============================================= */
.hero-section {
  height: 100vh;
  min-height: 700px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 0 1.5rem;
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 2.5rem;
  opacity: 0;
}

.hero-brand {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero-title {
  font-size: clamp(3.5rem, 12vw, 9rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.05em;
  background: linear-gradient(180deg, #ffffff 20%, rgba(255, 255, 255, 0.6) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1.5rem;
  opacity: 0;
  transform: scale(0.9);
  filter: blur(10px);
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: var(--sp-muted);
  font-weight: 400;
  margin-bottom: 2.5rem;
  opacity: 0;
}

.hero-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  opacity: 0;
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--sp-dim);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-weight: 700;
  opacity: 0;
  z-index: 2;
}

.scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, var(--sp-green), transparent);
}

/* =============================================
   SECTION 2: PLAYLIST SHOWCASE
   ============================================= */
.playlist-section {
  padding: 140px 1.5rem;
}

.playlist-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}

.playlist-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(30px);
}

.playlist-card:hover {
  background: var(--glass-hover);
  border-color: rgba(255, 255, 255, 0.14);
  transform: translateY(-6px);
}

.playlist-card:hover .play-btn {
  opacity: 1;
  transform: translateY(0);
}

/* CSS-only album art */
.playlist-art {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.art-icon {
  position: relative;
  z-index: 2;
  opacity: 0.5;
}

.art-shape {
  position: absolute;
  pointer-events: none;
}

/* Card 1 — Chill: teal/blue gradient */
.art-chill {
  background: linear-gradient(135deg, #0d4f3c 0%, #1a6b5a 30%, #2d9f90 60%, #1db954 100%);
}

.art-chill .art-shape-circle {
  width: 60%;
  height: 60%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(29, 185, 84, 0.4), transparent 70%);
  top: 20%;
  left: 20%;
}

.art-chill .art-shape-wave {
  width: 120%;
  height: 40%;
  bottom: -5%;
  left: -10%;
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.3));
  border-radius: 50% 50% 0 0;
}

/* Card 2 — Hip Hop: orange/red gradient */
.art-hiphop {
  background: linear-gradient(135deg, #3d1c02 0%, #8b3a0f 30%, #d4651e 60%, #ff8c42 100%);
}

.art-hiphop .art-shape-diamond {
  width: 50%;
  height: 50%;
  background: rgba(255, 255, 255, 0.08);
  top: 25%;
  left: 25%;
  transform: rotate(45deg);
}

.art-hiphop .art-shape-bars {
  width: 100%;
  height: 30%;
  bottom: 0;
  left: 0;
  background: repeating-linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.06) 0px,
    rgba(255, 255, 255, 0.06) 4px,
    transparent 4px,
    transparent 12px
  );
}

/* Card 3 — Electronic: purple/blue gradient */
.art-electronic {
  background: linear-gradient(135deg, #1a0533 0%, #4c1d95 30%, #7c3aed 60%, #a78bfa 100%);
}

.art-electronic .art-shape-rings {
  width: 70%;
  height: 70%;
  top: 15%;
  left: 15%;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  box-shadow: inset 0 0 0 12px transparent, inset 0 0 0 14px rgba(255, 255, 255, 0.06), inset 0 0 0
    26px transparent, inset 0 0 0 28px rgba(255, 255, 255, 0.04);
}

.art-electronic .art-shape-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  top: 48%;
  left: 48%;
}

/* Card 4 — Indie: pink/coral gradient */
.art-indie {
  background: linear-gradient(135deg, #4a1942 0%, #893168 30%, #c2527a 60%, #e87ea1 100%);
}

.art-indie .art-shape-triangle {
  width: 0;
  height: 0;
  border-left: 40px solid transparent;
  border-right: 40px solid transparent;
  border-bottom: 70px solid rgba(255, 255, 255, 0.08);
  top: 20%;
  left: calc(50% - 40px);
}

.art-indie .art-shape-cross {
  width: 60%;
  height: 2px;
  background: rgba(255, 255, 255, 0.1);
  top: 50%;
  left: 20%;
}

.art-indie .art-shape-cross::after {
  content: "";
  position: absolute;
  width: 2px;
  height: 60px;
  background: rgba(255, 255, 255, 0.1);
  top: -30px;
  left: 50%;
}

/* Card 5 — Jazz: amber/gold gradient */
.art-jazz {
  background: linear-gradient(135deg, #3b2506 0%, #78500f 30%, #b8860b 60%, #daa520 100%);
}

.art-jazz .art-shape-arc {
  width: 80%;
  height: 80%;
  top: 10%;
  left: 10%;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  border-bottom-color: transparent;
  border-left-color: transparent;
  transform: rotate(-20deg);
}

.art-jazz .art-shape-lines {
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent 0px,
    transparent 14px,
    rgba(255, 255, 255, 0.03) 14px,
    rgba(255, 255, 255, 0.03) 15px
  );
}

/* Card 6 — Workout: red/orange gradient */
.art-workout {
  background: linear-gradient(135deg, #3b0a0a 0%, #8b1a1a 30%, #dc2626 60%, #f87171 100%);
}

.art-workout .art-shape-bolt {
  width: 40px;
  height: 60px;
  top: 20%;
  left: calc(50% - 20px);
  background: rgba(255, 255, 255, 0.1);
  clip-path: polygon(50% 0%, 0% 50%, 35% 50%, 15% 100%, 100% 40%, 60% 40%);
}

.art-workout .art-shape-stripe {
  width: 200%;
  height: 30%;
  bottom: 10%;
  left: -50%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
  transform: rotate(-15deg);
}

/* Playlist info */
.playlist-info {
  margin-bottom: 4px;
}

.playlist-name {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--sp-text);
}

.playlist-meta {
  font-size: 0.8rem;
  color: var(--sp-dim);
}

.play-btn {
  position: absolute;
  bottom: 92px;
  right: 28px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--sp-green);
  color: #000;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(8px);
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.play-btn:hover {
  transform: scale(1.08) translateY(0);
  background: #1ed760;
}

.play-btn svg {
  margin-left: 2px;
}

/* =============================================
   SECTION 3: HOW IT WORKS (PINNED)
   ============================================= */
.how-section {
  padding: 0;
  position: relative;
}

.how-track {
  height: 300vh;
  position: relative;
}

.how-inner {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 80px;
  padding: 0 2rem;
  max-width: 72rem;
  margin: 0 auto;
}

.how-text {
  flex: 1;
  max-width: 480px;
}

.steps-container {
  position: relative;
  min-height: 200px;
}

.step-card {
  opacity: 0;
  transform: translateY(20px);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  transition: opacity 0.5s ease, transform 0.5s ease;
  pointer-events: none;
}

.step-card.active {
  opacity: 1;
  transform: translateY(0);
  position: relative;
  pointer-events: auto;
}

.step-number {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--sp-green);
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.step-title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.step-desc {
  font-size: 1.05rem;
  color: var(--sp-muted);
  line-height: 1.6;
}

.step-dots {
  display: flex;
  gap: 10px;
  margin-top: 2rem;
}

.step-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--sp-dim);
  transition: all 0.4s ease;
  cursor: pointer;
}

.step-dot.active {
  background: var(--sp-green);
  box-shadow: 0 0 12px var(--sp-green-glow);
  transform: scale(1.2);
}

/* How visual — mini phones */
.how-visual {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  max-width: 320px;
  height: 500px;
}

.mini-phone {
  position: absolute;
  width: 220px;
  height: 440px;
  background: var(--sp-dark);
  border-radius: 30px;
  border: 2px solid rgba(255, 255, 255, 0.1);
  padding: 40px 14px 20px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s ease, transform 0.6s ease;
  overflow: hidden;
}

.mini-phone.active {
  opacity: 1;
  transform: scale(1);
}

.mini-phone-notch {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.15);
}

.mini-phone-screen {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Mini phone 1: Browse */
.mini-search-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 10px;
  color: var(--sp-muted);
}

.mini-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  flex: 1;
}

.mini-tile {
  border-radius: 8px;
  min-height: 60px;
}

.mini-tile-1 {
  background: linear-gradient(135deg, #1db954, #064e2b);
}
.mini-tile-2 {
  background: linear-gradient(135deg, #8b5cf6, #3b1f7a);
}
.mini-tile-3 {
  background: linear-gradient(135deg, #e74c3c, #6b1d1d);
}
.mini-tile-4 {
  background: linear-gradient(135deg, #f39c12, #6b4406);
}
.mini-tile-5 {
  background: linear-gradient(135deg, #3498db, #153d5e);
}
.mini-tile-6 {
  background: linear-gradient(135deg, #e91e63, #601230);
}

/* Mini phone 2: Play */
.mini-now-playing {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding-top: 20px;
}

.mini-album-art {
  width: 140px;
  height: 140px;
  border-radius: 12px;
  background: linear-gradient(135deg, #1db954, #191414, #8b5cf6);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.mini-song-info {
  text-align: center;
}

.mini-song-title {
  width: 100px;
  height: 10px;
  background: rgba(255, 255, 255, 0.7);
  border-radius: 5px;
  margin: 0 auto 6px;
}

.mini-song-artist {
  width: 70px;
  height: 8px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 4px;
  margin: 0 auto;
}

.mini-progress {
  width: 85%;
  height: 3px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
}

.mini-progress::after {
  content: "";
  display: block;
  width: 40%;
  height: 100%;
  background: var(--sp-green);
  border-radius: 2px;
}

.mini-controls {
  display: flex;
  align-items: center;
  gap: 20px;
}

.mini-ctrl-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.mini-ctrl-play {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #fff;
  color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mini-ctrl-play svg {
  margin-left: 2px;
}

/* Mini phone 3: Discover */
.mini-discover {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 10px;
}

.mini-discover-title {
  width: 70%;
  height: 10px;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 5px;
}

.mini-discover-row {
  display: flex;
  gap: 8px;
}

.mini-disc-card {
  flex: 1;
  height: 80px;
  border-radius: 8px;
}

.mini-disc-1 {
  background: linear-gradient(135deg, #ff6b6b, #ee5a24);
}
.mini-disc-2 {
  background: linear-gradient(135deg, #1db954, #0a8f3f);
}
.mini-disc-3 {
  background: linear-gradient(135deg, #a29bfe, #6c5ce7);
}
.mini-disc-4 {
  background: linear-gradient(135deg, #fdcb6e, #e17055);
}

/* Equalizer bars */
.equalizer {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 4px;
  height: 40px;
  margin-top: auto;
  padding-bottom: 10px;
}

.eq-bar {
  width: 4px;
  background: var(--sp-green);
  border-radius: 2px;
  animation: eq-bounce 1.2s ease-in-out infinite;
}

.eq-bar:nth-child(1) {
  height: 16px;
  animation-delay: 0s;
}
.eq-bar:nth-child(2) {
  height: 28px;
  animation-delay: 0.15s;
}
.eq-bar:nth-child(3) {
  height: 20px;
  animation-delay: 0.3s;
}
.eq-bar:nth-child(4) {
  height: 32px;
  animation-delay: 0.45s;
}
.eq-bar:nth-child(5) {
  height: 12px;
  animation-delay: 0.6s;
}

@keyframes eq-bounce {
  0%,
  100% {
    transform: scaleY(0.4);
  }
  50% {
    transform: scaleY(1);
  }
}

/* =============================================
   SECTION 4: STATS COUNTER
   ============================================= */
.stats-section {
  padding: 160px 1.5rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 48px;
  text-align: center;
  margin-top: 3rem;
}

.stat-item {
  padding: 40px 20px;
}

.stat-number {
  font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  background: linear-gradient(180deg, #ffffff 0%, var(--sp-green) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
  line-height: 1;
}

.stat-label {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--sp-text);
}

.stat-desc {
  font-size: 0.9rem;
  color: var(--sp-dim);
  max-width: 260px;
  margin: 0 auto;
  line-height: 1.5;
}

/* =============================================
   SECTION 5: PREMIUM FEATURES
   ============================================= */
.premium-section {
  padding: 140px 1.5rem;
}

.premium-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 3.5rem;
}

.premium-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  opacity: 0;
  transform: translateY(30px);
}

.premium-card:hover {
  background: var(--glass-hover);
  border-color: rgba(29, 185, 84, 0.2);
  transform: translateY(-6px);
}

.premium-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--sp-green-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--sp-green);
}

.premium-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.premium-desc {
  font-size: 0.95rem;
  color: var(--sp-muted);
  line-height: 1.6;
}

/* =============================================
   SECTION 6: APP SHOWCASE (PHONE MOCKUP)
   ============================================= */
.app-section {
  padding: 140px 1.5rem;
}

.app-layout {
  display: flex;
  align-items: center;
  gap: 80px;
  flex-wrap: wrap;
  justify-content: center;
}

.app-text {
  flex: 1;
  min-width: 300px;
  max-width: 480px;
}

.app-features {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 2rem;
}

.app-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--sp-muted);
}

/* Phone Mockup */
.phone-container {
  perspective: 1200px;
}

.phone-mockup {
  width: 300px;
  height: 620px;
  background: var(--sp-dark);
  border-radius: var(--radius-xl);
  border: 3px solid rgba(255, 255, 255, 0.1);
  padding: 50px 18px 24px;
  position: relative;
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05), inset 0 1px 0
    rgba(255, 255, 255, 0.06);
  transform-style: preserve-3d;
  transition: transform 0.3s ease;
}

.phone-notch {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.12);
}

.phone-screen {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Now Playing UI */
.np-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  color: var(--sp-muted);
}

.np-playlist-name {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.np-album-art {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 24px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}

.np-art-inner {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #0d3320, #1db954, #064e2b, #8b5cf6, #2d1b69);
  background-size: 200% 200%;
  animation: art-shift 8s ease-in-out infinite;
  position: relative;
  overflow: hidden;
}

@keyframes art-shift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.np-art-shape {
  position: absolute;
  border-radius: 50%;
}

.np-art-shape-1 {
  width: 60%;
  height: 60%;
  top: 20%;
  left: 20%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1), transparent 70%);
}

.np-art-shape-2 {
  width: 30%;
  height: 30%;
  bottom: 10%;
  right: 10%;
  background: radial-gradient(circle, rgba(29, 185, 84, 0.3), transparent 70%);
}

.np-art-shape-3 {
  width: 40%;
  height: 40%;
  top: 5%;
  left: 5%;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.2), transparent 70%);
}

.np-song-details {
  margin-bottom: 16px;
}

.np-song-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.np-song-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.np-song-artist {
  font-size: 0.85rem;
  color: var(--sp-muted);
}

.np-heart {
  cursor: pointer;
  transition: transform 0.2s ease;
}

.np-heart:hover {
  transform: scale(1.2);
}

/* Progress bar */
.np-progress {
  margin-bottom: 16px;
}

.np-progress-bar {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 2px;
  position: relative;
  margin-bottom: 8px;
}

.np-progress-fill {
  width: 38%;
  height: 100%;
  background: var(--sp-green);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.np-progress-dot {
  position: absolute;
  top: 50%;
  left: 38%;
  transform: translate(-50%, -50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #fff;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.np-progress:hover .np-progress-dot {
  opacity: 1;
}

.np-times {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: var(--sp-dim);
}

/* Controls */
.np-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-top: auto;
}

.np-ctrl {
  background: none;
  border: none;
  color: var(--sp-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease, transform 0.2s ease;
  padding: 0;
}

.np-ctrl:hover {
  color: var(--sp-text);
  transform: scale(1.1);
}

.np-play {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #fff;
  color: #000;
}

.np-play:hover {
  transform: scale(1.06);
  color: #000;
}

.np-play svg {
  margin-left: 3px;
}

.np-shuffle,
.np-repeat {
  color: var(--sp-dim);
}

/* =============================================
   SECTION 7: FINAL CTA
   ============================================= */
.cta-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 90vh;
  overflow: hidden;
  position: relative;
  padding: 120px 1.5rem;
}

.cta-content {
  position: relative;
  z-index: 2;
}

.cta-title {
  margin-bottom: 1rem;
}

.cta-subtitle {
  font-size: 1.15rem;
  color: var(--sp-muted);
  margin-bottom: 2.5rem;
}

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

.cta-rings {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(29, 185, 84, 0.06);
}

.ring-1 {
  width: 300px;
  height: 300px;
}
.ring-2 {
  width: 520px;
  height: 520px;
}
.ring-3 {
  width: 740px;
  height: 740px;
}

.cta-orbs {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.cta-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.15;
}

.cta-orb-1 {
  width: 500px;
  height: 500px;
  background: var(--sp-green);
  top: 10%;
  left: -10%;
}

.cta-orb-2 {
  width: 400px;
  height: 400px;
  background: var(--sp-purple);
  bottom: 10%;
  right: -10%;
}

/* =============================================
   REDUCED MOTION
   ============================================= */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .hero-title {
    opacity: 1;
    transform: none;
    filter: none;
  }

  .hero-subtitle,
  .hero-logo,
  .hero-buttons,
  .scroll-indicator {
    opacity: 1;
  }

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

  .playlist-card,
  .premium-card {
    opacity: 1;
    transform: none;
  }

  .step-card {
    position: relative;
    opacity: 1;
    transform: none;
  }

  .mini-phone {
    opacity: 1;
    transform: none;
  }

  .eq-bar {
    animation: none;
    transform: none;
  }

  .np-art-inner {
    animation: none;
  }
}

/* =============================================
   RESPONSIVE: 1024px
   ============================================= */
@media (max-width: 1024px) {
  .how-inner {
    gap: 40px;
    padding: 0 1.5rem;
  }

  .app-layout {
    gap: 48px;
  }

  .phone-mockup {
    width: 270px;
    height: 560px;
  }

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

/* =============================================
   RESPONSIVE: 768px
   ============================================= */
@media (max-width: 768px) {
  section {
    padding: 80px 1rem;
  }

  .how-inner {
    flex-direction: column;
    gap: 40px;
    text-align: center;
    padding: 0 1rem;
  }

  .how-text {
    max-width: 100%;
  }

  .how-visual {
    max-width: 200px;
    height: 360px;
  }

  .mini-phone {
    width: 170px;
    height: 340px;
    padding: 32px 10px 16px;
    border-radius: 22px;
  }

  .step-dots {
    justify-content: center;
  }

  .app-layout {
    flex-direction: column;
    gap: 40px;
    text-align: center;
  }

  .app-text {
    min-width: 0;
  }

  .app-features {
    align-items: center;
  }

  .section-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .phone-mockup {
    width: 260px;
    height: 540px;
    padding: 44px 16px 20px;
  }

  .playlist-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
  }

  .playlist-card {
    padding: 14px;
  }

  .play-btn {
    width: 40px;
    height: 40px;
    bottom: 76px;
    right: 22px;
  }

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

  .premium-card {
    padding: 28px 24px;
  }

  .glass-card {
    padding: 28px;
    border-radius: var(--radius-lg);
  }

  .stats-grid {
    gap: 24px;
  }

  .stat-item {
    padding: 24px 12px;
  }

  .ring-1 {
    width: 200px;
    height: 200px;
  }
  .ring-2 {
    width: 360px;
    height: 360px;
  }
  .ring-3 {
    width: 520px;
    height: 520px;
  }
}

/* =============================================
   RESPONSIVE: 480px
   ============================================= */
@media (max-width: 480px) {
  .hero-title {
    font-size: clamp(2.8rem, 14vw, 5rem);
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
    padding: 0 1rem;
  }

  .hero-buttons .btn-primary,
  .hero-buttons .btn-secondary {
    width: 100%;
    text-align: center;
  }

  .section-title {
    font-size: clamp(2rem, 9vw, 3.5rem);
  }

  .playlist-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .playlist-card {
    padding: 10px;
    border-radius: var(--radius-md);
  }

  .playlist-name {
    font-size: 0.85rem;
  }

  .play-btn {
    width: 36px;
    height: 36px;
    bottom: 64px;
    right: 16px;
  }

  .phone-mockup {
    width: 240px;
    height: 500px;
    padding: 40px 14px 18px;
  }

  .np-album-art {
    margin-bottom: 16px;
  }

  .np-controls {
    gap: 16px;
  }

  .np-play {
    width: 48px;
    height: 48px;
  }

  .stat-number {
    font-size: clamp(2.5rem, 12vw, 4rem);
  }

  .how-track {
    height: 250vh;
  }

  .how-visual {
    max-width: 160px;
    height: 300px;
  }

  .mini-phone {
    width: 140px;
    height: 280px;
    padding: 28px 8px 12px;
    border-radius: 18px;
  }

  .mini-album-art {
    width: 100px;
    height: 100px;
  }

  .cta-section {
    min-height: 70vh;
  }
}

// =============================================
// 1. Canvas gradient mesh — green/purple orbs
// =============================================
(function () {
  const canvas = document.getElementById("mesh-bg");
  if (!canvas) return;
  const ctx = canvas.getContext("2d");
  let w, h;

  function resize() {
    w = canvas.width = window.innerWidth;
    h = canvas.height = window.innerHeight;
  }
  resize();
  window.addEventListener("resize", resize);

  const orbs = [
    { x: 0.2, y: 0.3, r: 0.45, color: [29, 185, 84], speed: 0.0003, phase: 0 },
    { x: 0.75, y: 0.6, r: 0.4, color: [139, 92, 246], speed: 0.00025, phase: 2 },
    { x: 0.5, y: 0.8, r: 0.35, color: [29, 185, 84], speed: 0.00035, phase: 4 },
    { x: 0.85, y: 0.2, r: 0.3, color: [88, 60, 180], speed: 0.0002, phase: 1 },
    { x: 0.15, y: 0.7, r: 0.25, color: [16, 130, 60], speed: 0.00028, phase: 3 },
  ];

  function draw(t) {
    ctx.clearRect(0, 0, w, h);
    ctx.fillStyle = "#121212";
    ctx.fillRect(0, 0, w, h);

    for (const orb of orbs) {
      const ox = (orb.x + Math.sin(t * orb.speed + orb.phase) * 0.08) * w;
      const oy = (orb.y + Math.cos(t * orb.speed * 0.7 + orb.phase) * 0.06) * h;
      const or = orb.r * Math.min(w, h);

      const grad = ctx.createRadialGradient(ox, oy, 0, ox, oy, or);
      grad.addColorStop(0, `rgba(${orb.color[0]}, ${orb.color[1]}, ${orb.color[2]}, 0.12)`);
      grad.addColorStop(0.5, `rgba(${orb.color[0]}, ${orb.color[1]}, ${orb.color[2]}, 0.04)`);
      grad.addColorStop(1, `rgba(${orb.color[0]}, ${orb.color[1]}, ${orb.color[2]}, 0)`);

      ctx.fillStyle = grad;
      ctx.beginPath();
      ctx.arc(ox, oy, or, 0, Math.PI * 2);
      ctx.fill();
    }

    // Vignette overlay
    const vignette = ctx.createRadialGradient(w / 2, h / 2, w * 0.2, w / 2, h / 2, w * 0.8);
    vignette.addColorStop(0, "rgba(18, 18, 18, 0)");
    vignette.addColorStop(1, "rgba(18, 18, 18, 0.6)");
    ctx.fillStyle = vignette;
    ctx.fillRect(0, 0, w, h);

    requestAnimationFrame(draw);
  }

  requestAnimationFrame(draw);
})();

// =============================================
// 2. Lenis + GSAP setup
// =============================================
const lenis = new Lenis({
  duration: 1.2,
  easing: (t) => Math.min(1, 1.001 - Math.pow(2, -10 * t)),
  smoothWheel: true,
  autoRaf: false,
});

gsap.registerPlugin(ScrollTrigger);

lenis.on("scroll", ScrollTrigger.update);
gsap.ticker.add((time) => {
  lenis.raf(time * 1000);
});
gsap.ticker.lagSmoothing(0);

const reduced = window.matchMedia("(prefers-reduced-motion: reduce)").matches;
const dur = (d) => (reduced ? 0 : d);

// =============================================
// 3. Hero entrance timeline
// =============================================
const heroTl = gsap.timeline({ defaults: { ease: "power4.out" } });

heroTl
  .to(".hero-logo", {
    opacity: 1,
    y: 0,
    duration: dur(1.2),
    delay: dur(0.3),
  })
  .to(
    ".hero-title",
    {
      opacity: 1,
      scale: 1,
      filter: "blur(0px)",
      duration: dur(2),
    },
    "-=0.8"
  )
  .to(
    ".hero-subtitle",
    {
      opacity: 1,
      y: 0,
      duration: dur(1.2),
    },
    "-=1.5"
  )
  .to(
    ".hero-buttons",
    {
      opacity: 1,
      y: 0,
      duration: dur(1),
    },
    "-=0.8"
  )
  .to(
    ".scroll-indicator",
    {
      opacity: 1,
      y: 0,
      duration: dur(0.8),
    },
    "-=0.5"
  );

// =============================================
// 4. Hero parallax on scroll
// =============================================
gsap.to(".hero-content", {
  scale: 1.15,
  opacity: 0,
  filter: "blur(16px)",
  scrollTrigger: {
    trigger: ".hero-section",
    start: "top top",
    end: "80% top",
    scrub: true,
  },
});

gsap.to(".scroll-indicator", {
  opacity: 0,
  scrollTrigger: {
    trigger: ".hero-section",
    start: "15% top",
    end: "30% top",
    scrub: true,
  },
});

// =============================================
// 5. Generic .reveal scroll animation
// =============================================
const revealElements = gsap.utils.toArray(".reveal");
revealElements.forEach((el) => {
  gsap.fromTo(
    el,
    { opacity: 0, y: 40 },
    {
      opacity: 1,
      y: 0,
      duration: dur(1.2),
      ease: "power3.out",
      scrollTrigger: {
        trigger: el,
        start: "top 85%",
        toggleActions: "play none none none",
      },
    }
  );
});

// =============================================
// 6. Playlist cards stagger reveal
// =============================================
const playlistGrid = document.querySelector(".playlist-grid");
if (playlistGrid) {
  gsap.fromTo(
    ".playlist-card",
    { opacity: 0, y: 40, scale: 0.95 },
    {
      opacity: 1,
      y: 0,
      scale: 1,
      duration: dur(0.8),
      stagger: 0.1,
      ease: "power3.out",
      scrollTrigger: {
        trigger: playlistGrid,
        start: "top 80%",
        toggleActions: "play none none none",
      },
    }
  );
}

// =============================================
// 7. Pinned scroll section — How It Works
// =============================================
const howTrack = document.querySelector(".how-track");
const stepCards = document.querySelectorAll(".step-card");
const stepDots = document.querySelectorAll(".step-dot");
const miniPhones = document.querySelectorAll(".mini-phone");

function setActiveStep(index) {
  stepCards.forEach((card, i) => {
    card.classList.toggle("active", i === index);
  });
  stepDots.forEach((dot, i) => {
    dot.classList.toggle("active", i === index);
  });
  miniPhones.forEach((phone, i) => {
    phone.classList.toggle("active", i === index);
  });
}

if (howTrack && stepCards.length > 0) {
  ScrollTrigger.create({
    trigger: howTrack,
    start: "top top",
    end: "bottom bottom",
    scrub: true,
    onUpdate: (self) => {
      const progress = self.progress;
      const totalSteps = stepCards.length;
      const stepIndex = Math.min(totalSteps - 1, Math.floor(progress * totalSteps));
      setActiveStep(stepIndex);
    },
  });
}

// =============================================
// 8. Stat counter count-up
// =============================================
const statNumbers = document.querySelectorAll(".stat-number[data-target]");
statNumbers.forEach((el) => {
  const target = parseInt(el.dataset.target, 10);
  const suffix = el.dataset.suffix || "";

  if (isNaN(target) || target <= 0) return;

  el.textContent = "0" + suffix;

  ScrollTrigger.create({
    trigger: el,
    start: "top 85%",
    once: true,
    onEnter: () => {
      gsap.to(
        { val: 0 },
        {
          val: target,
          duration: dur(2.5),
          ease: "power2.out",
          onUpdate: function () {
            el.textContent = Math.round(this.targets()[0].val) + suffix;
          },
        }
      );
    },
  });
});

// =============================================
// 9. Premium features stagger reveal
// =============================================
const premiumGrid = document.querySelector(".premium-grid");
if (premiumGrid) {
  gsap.fromTo(
    ".premium-card",
    { opacity: 0, y: 40, scale: 0.95 },
    {
      opacity: 1,
      y: 0,
      scale: 1,
      duration: dur(0.8),
      stagger: 0.15,
      ease: "power3.out",
      scrollTrigger: {
        trigger: premiumGrid,
        start: "top 80%",
        toggleActions: "play none none none",
      },
    }
  );
}

// =============================================
// 10. Phone mockup mouse-tilt parallax
// =============================================
const phoneMockup = document.querySelector(".phone-mockup");
if (phoneMockup && !reduced) {
  const phoneContainer = document.querySelector(".phone-container");

  window.addEventListener("mousemove", (e) => {
    if (!phoneContainer) return;
    const rect = phoneContainer.getBoundingClientRect();
    // Only apply tilt if the phone is visible in the viewport
    if (rect.top > window.innerHeight || rect.bottom < 0) return;

    const centerX = rect.left + rect.width / 2;
    const centerY = rect.top + rect.height / 2;
    const x = (e.clientX - centerX) / (rect.width / 2);
    const y = (e.clientY - centerY) / (rect.height / 2);

    // Clamp to prevent extreme angles
    const clampedX = Math.max(-1, Math.min(1, x));
    const clampedY = Math.max(-1, Math.min(1, y));

    gsap.to(phoneMockup, {
      rotateY: clampedX * 12,
      rotateX: -clampedY * 8,
      duration: 0.6,
      ease: "power2.out",
    });
  });

  // Scroll parallax for phone
  gsap.to(phoneMockup, {
    y: -30,
    scrollTrigger: {
      trigger: ".app-section",
      start: "top bottom",
      end: "bottom top",
      scrub: true,
    },
  });
}

// =============================================
// 11. CTA rings expansion
// =============================================
gsap.utils.toArray(".ring").forEach((ring, i) => {
  gsap.fromTo(
    ring,
    { scale: 0.4, opacity: 0 },
    {
      scale: 1,
      opacity: 1,
      duration: dur(1.8),
      delay: i * 0.2,
      ease: "power3.out",
      scrollTrigger: {
        trigger: ".cta-section",
        start: "top 80%",
        toggleActions: "play none none none",
      },
    }
  );
});

// CTA orb parallax
gsap.to(".cta-orb-1", {
  y: -80,
  x: 40,
  scrollTrigger: {
    trigger: ".cta-section",
    start: "top bottom",
    end: "bottom top",
    scrub: 1,
  },
});

gsap.to(".cta-orb-2", {
  y: 60,
  x: -40,
  scrollTrigger: {
    trigger: ".cta-section",
    start: "top bottom",
    end: "bottom top",
    scrub: 1,
  },
});