:root {
  /* Surface scale */
  --bg-color: #121212;
  --side-nav-bg: #181818;
  --topbar-bg: #1c1c1c;
  --border-color: #282828;
  --text-color: #e5e5e5;
  --muted-text: #a0a0a0;

  /* Accent — default cyan/blue, matches app icon (single fixed choice, no picker on landing page) */
  --accent: #25b4d2;
  --accent-hover: #03aae1;
  --hover-bg: rgba(37, 180, 210, 0.25);

  /* Glass */
  --glass-bg: color-mix(in srgb, var(--bg-color) 55%, transparent);
  --glass-blur: blur(20px) saturate(1.2);

  /* Radius scale */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --radius-full: 999px;

  /* Shadow scale */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.4);

  /* Typography */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, Cantarell, sans-serif;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg-color);
  color: var(--text-color);
  min-height: 100vh;
  overflow-x: hidden;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 3rem;
  background: var(--topbar-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}

.nav-links {
  display: flex;
  align-items: center; /* centers vertically */
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.nav-links a {
  color: var(--muted-text);
  text-decoration: none;
  transition: color 0.3s;
  font-size: 0.95rem;
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-color);
  cursor: pointer;
  padding: 0.4rem;
  align-items: center;
  justify-content: center;
}

.nav-toggle svg {
  width: 24px;
  height: 24px;
}

.hero {
  max-width: 1400px;
  margin: 0 auto;
  padding: 5rem 3rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-content h1 .brand {
  color: var(--accent);
}

.hero-content .subtitle {
  font-size: 1.25rem;
  color: var(--muted-text);
  line-height: 1.6;
  margin-bottom: 2.5rem;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  padding: 0.875rem 2rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--side-nav-bg);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.player-mockup {
  width: 100%;
  max-width: 420px;
  padding: 1.1rem 1.25rem 1rem;
  border-radius: var(--radius-xl);
  background-color: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 0.85rem;
  row-gap: 0.9rem;
  animation: floatMockup 6s ease-in-out infinite;
}

@keyframes floatMockup {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-14px);
  }
}

.mockup-cover {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.9);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
}

.mockup-cover svg {
  width: 22px;
  height: 22px;
}

.mockup-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.mockup-title {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-color);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mockup-artist {
  font-size: 0.8rem;
  color: var(--muted-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mockup-controls {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.mockup-icon-btn {
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-color);
  opacity: 0.75;
  cursor: default;
  transition:
    background-color 0.2s ease,
    transform 0.15s ease,
    opacity 0.2s ease;
}

.mockup-icon-btn svg {
  width: 17px;
  height: 17px;
}

.mockup-play {
  transform: scale(1.15);
  opacity: 1;
  color: var(--accent);
}

.player-mockup:hover .mockup-icon-btn {
  opacity: 1;
}

.player-mockup:hover .mockup-play {
  filter: drop-shadow(0 0 8px var(--accent));
}

.mockup-progress {
  grid-column: 1 / -1;
  height: 4px;
  border-radius: var(--radius-full);
  background: var(--border-color);
  overflow: hidden;
}

.mockup-progress-fill {
  height: 100%;
  width: 38%;
  border-radius: var(--radius-full);
  background: var(--accent);
}

.nav-update {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-update svg {
  width: 16px;
  height: 16px;
  stroke-width: 2;
}

.features {
  max-width: 1400px;
  margin: 4rem auto;
  padding: 0 3rem 4rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background: var(--side-nav-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 2rem;
  transition: all 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--hover-bg);
  color: var(--accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: #fff;
}

.feature-card p {
  color: var(--muted-text);
  line-height: 1.6;
  font-size: 0.95rem;
}

@property --border-angle {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0deg;
}

.feature-card.featured {
  position: relative;
  z-index: 0;
}

.feature-card.featured::before {
  content: "";
  position: absolute;
  inset: -2px;
  z-index: -1;
  border-radius: calc(var(--radius-lg) + 2px);
  padding: 2px;
  background: conic-gradient(
    from var(--border-angle, 0deg),
    var(--accent),
    var(--accent-hover),
    var(--accent)
  );
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: rotate-border-angle 4s linear infinite;
}

@keyframes rotate-border-angle {
  to {
    --border-angle: 360deg;
  }
}

footer {
  text-align: center;
  padding: 1.5rem;
  border-top: 1px solid var(--border-color);
  color: var(--muted-text);
  font-size: 0.9rem;
}

.screenshots {
  max-width: 1400px;
  margin: 4rem auto;
  padding: 0 3rem 4rem;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 2rem;
  text-align: center;
  font-weight: 700;
  color: var(--text-color);
}

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

.screenshot-card {
  background: var(--side-nav-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 1rem;
  transition: all 0.3s ease;
}

.screenshot-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
}

.screenshot-card .terminal-header {
  margin-bottom: 0.75rem;
}

.screenshot-card img {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: contain;
  border-radius: var(--radius-md);
  background: var(--bg-color);
  cursor: pointer;
}

.screenshot-card figcaption {
  margin-top: 0.75rem;
  color: var(--muted-text);
  font-size: 0.9rem;
  text-align: center;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.section-divider {
  border: none;
  height: 1px;
  margin: 4rem auto;
  max-width: 1200px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--border-color),
    transparent
  );
}

/* Lightbox */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 10, 20, 0.9);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.3s ease;
}

.lightbox.hidden {
  display: none;
}

#lightbox-img {
  max-width: 90%;
  max-height: 85vh;
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
  animation: zoomIn 0.3s ease;
}

.lightbox-close {
  position: absolute;
  top: 25px;
  right: 35px;
  font-size: 3rem;
  color: white;
  cursor: pointer;
  user-select: none;
  transition: opacity 0.2s;
}

.lightbox-close:hover {
  opacity: 0.7;
}

@keyframes zoomIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.cli-section {
  padding: 80px 20px;
  background: var(--side-nav-bg);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin: 4rem auto;
  max-width: 1000px;
}
.terminal-window {
  background: var(--topbar-bg);
  border-radius: var(--radius-md);
  padding: 20px;
  font-family: "Courier New", Courier, monospace;
  position: relative;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
}
.terminal-header {
  display: flex;
  gap: 8px;
  margin-bottom: 15px;
}
.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.red {
  background: #ff5f56;
}
.yellow {
  background: #ffbd2e;
}
.green {
  background: #27c93f;
}
.command {
  color: var(--accent-hover);
  margin-bottom: 10px;
}
.command-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}
.command-line .command {
  margin-bottom: 0;
}
.copy-btn {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--muted-text);
  cursor: pointer;
  transition: all 0.2s;
}
.copy-btn svg {
  width: 16px;
  height: 16px;
}
.copy-btn:hover {
  color: var(--text-color);
  border-color: var(--accent);
  background: var(--hover-bg);
}
.copy-btn.copied {
  color: #27c93f;
  border-color: #27c93f;
}
.output {
  color: var(--muted-text);
}
.cli-badge {
  background: var(--accent);
  color: white;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  margin-bottom: 15px;
  display: inline-block;
}

@media (max-width: 768px) {
  .navbar {
    padding: 1rem 1.25rem;
    position: relative;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--topbar-bg);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    width: 100%;
    padding: 0.9rem 1.25rem;
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .nav-links a:hover {
    background: var(--hover-bg);
  }

  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.5rem;
    padding: 3rem 1.5rem;
  }

  .hero-content h1 {
    font-size: 2.25rem;
  }

  .cta-buttons {
    justify-content: center;
    flex-direction: column;
  }

  .cta-buttons .btn {
    width: 100%;
    text-align: center;
    min-height: 44px;
  }

  .player-mockup {
    max-width: 340px;
    padding: 1rem;
  }

  .features,
  .screenshots {
    padding: 0 1.5rem 3rem;
  }

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

  .screenshot-card img {
    height: 180px;
  }

  .cli-section {
    padding: 40px 20px;
  }

  .command-line {
    flex-wrap: nowrap;
  }

  .command-line .command {
    font-size: 0.85rem;
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
  }

  .copy-btn {
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 1.85rem;
  }

  .player-mockup {
    max-width: 280px;
  }

  .mockup-icon-btn svg {
    width: 15px;
    height: 15px;
  }

  .cli-section {
    padding: 32px 14px;
  }
}