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

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --text-primary: #ffffff;
  --text-secondary: #888888;
  --text-tertiary: #555555;
  --border: rgba(255, 255, 255, 0.08);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ---------- NAV ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 24px 0;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav.scrolled {
  padding: 16px 0;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  color: var(--text-primary);
  text-decoration: none;
}

.logo-img {
  height: 32px;
  width: auto;
  display: block;
  border-radius: 20%;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover { color: var(--text-primary); }

.github-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--bg-tertiary);
  border-radius: 100px;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.github-link:hover {
  background: var(--bg-secondary);
  border-color: rgba(255, 255, 255, 0.2);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-primary);
  transition: all 0.3s ease;
}

.menu-toggle.open span:first-child { transform: rotate(45deg) translate(4px, 4px); }
.menu-toggle.open span:last-child  { transform: rotate(-45deg) translate(4px, -4px); }

/* ---------- HERO ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 40px 80px;
  max-width: 1400px;
  margin: 0 auto;
  gap: 80px;
}

.hero-content { flex: 1; max-width: 600px; }

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.dot {
  width: 6px; height: 6px;
  background: #4ade80;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.5; }
}

.hero-title {
  font-size: clamp(48px, 6vw, 72px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -3px;
  margin-bottom: 28px;
}

.gradient-text {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  border: none;
}

.btn-primary { background: var(--text-primary); color: var(--bg-primary); }
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 40px rgba(255, 255, 255, 0.1);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-large { padding: 18px 36px; font-size: 16px; }

/* ---------- PLAYER MOCKUP ---------- */
.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.player-mockup {
  width: 340px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.5);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-15px); }
}

.player-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.player-dots { display: flex; gap: 6px; }
.player-dots span {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--bg-tertiary);
}
.player-dots span:first-child   { background: #ff5f57; }
.player-dots span:nth-child(2)  { background: #febc2e; }
.player-dots span:nth-child(3)  { background: #28c840; }

.player-content {
  padding: 32px 24px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.album-art {
  position: relative;
  width: 180px; height: 180px;
  margin-bottom: 24px;
}

.album-glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(circle, rgba(102, 126, 234, 0.3) 0%, transparent 70%);
  filter: blur(20px);
}

.album-inner {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 16px;
  object-fit: cover;
  display: block;
  box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
}

.track-info { text-align: center; margin-bottom: 20px; }
.track-title { font-size: 17px; font-weight: 600; margin-bottom: 4px; }
.track-artist { font-size: 14px; color: var(--text-secondary); }

.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: 2px;
  margin-bottom: 24px;
  overflow: hidden;
}

.progress-fill {
  width: 35%;
  height: 100%;
  background: var(--text-primary);
  border-radius: 2px;
}

.player-controls {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--text-secondary);
}

.play-btn {
  width: 56px; height: 56px;
  background: var(--text-primary);
  color: var(--bg-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.2s ease;
}
.play-btn:hover { transform: scale(1.05); }

/* ---------- FEATURES ---------- */
.features {
  padding: 120px 40px;
  max-width: 1400px;
  margin: 0 auto;
}

.section-header { margin-bottom: 64px; }

.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.section-header h2,
.about-content h2,
.cta-content h2 {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 600;
  letter-spacing: -2px;
  line-height: 1.1;
}

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

.feature-card {
  padding: 40px 32px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 20px;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.feature-card:hover {
  background: var(--bg-tertiary);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
}

.feature-icon {
  width: 56px; height: 56px;
  background: var(--bg-tertiary);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---------- STATS ---------- */
.stats {
  padding: 80px 40px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-grid {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}

.stat-value {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 600;
  letter-spacing: -2px;
  margin-bottom: 8px;
}

.stat-label { font-size: 14px; color: var(--text-secondary); }

/* ---------- ABOUT ---------- */
.about {
  padding: 120px 40px;
  max-width: 1400px;
  margin: 0 auto;
}

.about-content { max-width: 720px; }

.about-content p {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-top: 24px;
}

.about-quote {
  margin-top: 48px;
  padding-left: 24px;
  border-left: 2px solid var(--text-tertiary);
  font-size: 20px;
  font-style: italic;
  color: var(--text-primary);
}

/* ---------- CTA ---------- */
.cta {
  padding: 160px 40px;
  text-align: center;
  background: radial-gradient(ellipse at center, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
}

.cta-content { max-width: 700px; margin: 0 auto; }

.cta-content p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-top: 20px;
  margin-bottom: 40px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.platforms {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  color: var(--text-tertiary);
  font-size: 14px;
}

.platform-icons { display: flex; gap: 16px; color: var(--text-secondary); }

/* ---------- FOOTER ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 80px 40px 40px;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 80px;
  flex-wrap: wrap;
}

.footer-brand { max-width: 280px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.footer-links { display: flex; gap: 80px; flex-wrap: wrap; }

.footer-column h4 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-tertiary);
  margin-bottom: 20px;
}

.footer-column a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 12px;
  transition: color 0.3s ease;
}
.footer-column a:hover { color: var(--text-primary); }

.footer-bottom {
  max-width: 1400px;
  margin: 60px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-tertiary);
  flex-wrap: wrap;
  gap: 16px;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .hero { flex-direction: column; text-align: center; gap: 60px; }
  .hero-content { max-width: 100%; }
  .hero-description { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-content { padding: 0 24px; }
  .menu-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: 280px;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 100px 32px 32px;
    gap: 24px;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    border-left: 1px solid var(--border);
  }
  .nav-links.open { transform: translateX(0); }
  .hero { padding: 100px 24px 60px; }
  .hero-title { letter-spacing: -2px; }
  .features, .about, .cta { padding-left: 24px; padding-right: 24px; }
  .features-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .footer-content { flex-direction: column; gap: 48px; }
  .footer-links { gap: 48px; }
  .cta { padding: 100px 24px; }
  .player-mockup { width: 300px; }
  .album-art { width: 150px; height: 150px; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; width: 100%; }
  .btn { justify-content: center; width: 100%; }
  .cta-actions { flex-direction: column; }
  .stats-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}