:root {
  --bg: #090b0e;
  --panel: #101419;
  --panel-2: #151a20;
  --line: #252b33;
  --line-strong: #3a444f;
  --text: #f4f6f8;
  --muted: #9ca6b1;
  --muted-2: #6d7782;
  --accent: #72e1c4;
  --accent-soft: #b8f2e3;
  --danger: #ff8f8f;
  --ink: #07110d;
  --radius: 22px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  letter-spacing: -0.015em;
}
button, input, select, textarea { font: inherit; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 48px 48px;
}

.topbar,
main,
footer {
  width: min(calc(100% - 36px), var(--max));
  margin-inline: auto;
}

.topbar {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-weight: 820;
  letter-spacing: .07em;
  font-size: 14px;
}

.brand-symbol {
  width: 30px;
  height: 30px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
}
.brand-symbol i {
  display: block;
  width: 2px;
  border-radius: 99px;
  background: var(--accent);
}
.brand-symbol i:nth-child(1) { height: 8px; }
.brand-symbol i:nth-child(2) { height: 15px; }
.brand-symbol i:nth-child(3) { height: 11px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 25px;
  color: var(--muted);
  font-size: 14px;
}
.nav-links a:hover, .text-button:hover { color: var(--text); }
.text-button {
  border: 0;
  background: none;
  padding: 0;
  cursor: pointer;
  color: inherit;
}

.hero { padding: 88px 0 92px; }
.hero-copy { max-width: 920px; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}
.eyebrow span, .status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}
.hero h1 {
  margin: 0;
  font-size: clamp(58px, 9vw, 112px);
  line-height: .91;
  letter-spacing: -.075em;
  font-weight: 850;
}
.lede {
  max-width: 770px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(19px, 2.2vw, 25px);
  line-height: 1.45;
}

.player-card {
  margin-top: 60px;
  border: 1px solid var(--line);
  border-radius: 28px;
  overflow: hidden;
  background: #0c1014;
  box-shadow: 0 26px 90px rgba(0,0,0,.28);
}
.player-topline {
  min-height: 48px;
  padding: 0 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}
.player-topline > div { display: flex; align-items: center; gap: 8px; }
.status-dot.busy { background: #f3c978; }
.status-dot.error { background: var(--danger); }
.model-label { color: var(--muted-2); }
.player-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr); }
.player-main { padding: 38px; border-right: 1px solid var(--line); min-width: 0; }
.session-panel { padding: 32px; background: #0e1216; }
.micro-label {
  margin: 0 0 10px;
  color: var(--muted-2);
  font-size: 11px;
  letter-spacing: .14em;
  font-weight: 820;
}
.player-main h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 50px);
  line-height: 1;
  letter-spacing: -.05em;
}
.track-meta { margin: 11px 0 0; color: var(--muted); font-size: 14px; }

.waveform-wrap {
  position: relative;
  height: 142px;
  margin: 42px 0 28px;
  cursor: grab;
  touch-action: none;
  user-select: none;
  background: var(--panel);
  border-radius: 14px;
  border: 1px solid var(--line);
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.waveform-wrap:active { cursor: grabbing; }
.waveform-wrap:hover,
.waveform-wrap:active {
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(114,225,196,.08);
}
.waveform {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 3px;
  overflow: hidden;
  padding: 0 10px;
}
.waveform span {
  flex: 0 0 3px;
  min-height: 10px;
  border-radius: 99px;
  background: var(--muted-2);
  opacity: .35;
  transition: background .12s ease, opacity .12s ease, transform .12s ease;
}
.waveform span.active {
  background: var(--accent);
  opacity: 1;
}

.scrubber-playhead {
  position: absolute;
  top: 0;
  width: 2px;
  height: 100%;
  background: var(--accent);
  pointer-events: none;
  opacity: .6;
  transition: opacity .15s ease;
  box-shadow: 0 0 10px var(--accent);
}
.waveform-wrap:hover .scrubber-playhead,
.waveform-wrap:active .scrubber-playhead { opacity: 1; }

.time-row {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  padding: 0 2px;
}
.transport { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 23px; }
.primary-control, .secondary-control {
  min-height: 44px;
  border-radius: 999px;
  padding: 0 17px;
  border: 1px solid var(--line-strong);
  cursor: pointer;
  font-weight: 760;
  transition: transform .16s ease, border-color .16s ease, background .16s ease;
}
.primary-control { background: var(--accent); color: var(--ink); border-color: var(--accent); }
.secondary-control { background: var(--panel); }
.primary-control:hover:not(:disabled), .secondary-control:hover:not(:disabled) { transform: translateY(-1px); }
.secondary-control:hover:not(:disabled) { border-color: #56626e; }
button:disabled { opacity: .42; cursor: not-allowed; }
.message { min-height: 24px; margin-top: 16px; color: var(--muted); font-size: 13px; }
.message.error { color: var(--danger); }

.duration-display { display: flex; align-items: baseline; gap: 9px; margin: 5px 0 20px; }
.duration-display strong { font-size: 52px; letter-spacing: -.055em; line-height: 1; }
.duration-display span { color: var(--muted); }
input[type="range"] { width: 100%; accent-color: var(--accent); }
.preset-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 7px; margin-top: 16px; }
.preset-row button {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}
.preset-row button.active { color: var(--text); border-color: var(--accent); background: rgba(114,225,196,.07); }
.field-label { display: block; margin-top: 26px; }
select, textarea, input[type="password"], input[type="text"] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #0b0f13;
  color: var(--text);
  outline: none;
}
select, input[type="password"], input[type="text"] { min-height: 44px; padding: 0 13px; }
textarea { padding: 12px 13px; resize: vertical; }
select:focus, textarea:focus, input:focus { border-color: var(--line-strong); }
.saved-state {
  margin-top: 25px;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: 15px;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  font-size: 13px;
}
.saved-state span { color: var(--muted); text-align: right; }

.content-section { padding: 100px 0; border-top: 1px solid var(--line); }
.section-label { color: var(--accent); font-size: 11px; letter-spacing: .16em; font-weight: 830; }
.section-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, .95fr);
  gap: 70px;
  align-items: end;
  margin: 18px 0 48px;
}
.section-intro h2 {
  margin: 0;
  font-size: clamp(40px, 5.5vw, 68px);
  line-height: 1.02;
  letter-spacing: -.055em;
}
.section-intro p { margin: 0; color: var(--muted); font-size: 18px; }
.timeline { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.timeline article {
  min-height: 94px;
  display: grid;
  grid-template-columns: 140px 180px 1fr;
  align-items: center;
  gap: 25px;
  padding: 20px 26px;
  border-bottom: 1px solid var(--line);
}
.timeline article:last-child { border-bottom: 0; }
.timeline span { color: var(--accent); font-weight: 800; font-variant-numeric: tabular-nums; }
.timeline strong { font-size: 18px; }
.timeline p { margin: 0; color: var(--muted); }
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.feature-grid article { min-height: 210px; padding: 26px; border: 1px solid var(--line); border-radius: 20px; background: rgba(16,20,25,.82); }
.feature-grid article > span { color: var(--muted-2); font-size: 11px; font-weight: 800; letter-spacing: .12em; }
.feature-grid h3 { margin: 42px 0 7px; font-size: 22px; letter-spacing: -.035em; }
.feature-grid p { margin: 0; color: var(--muted); }
.statement-section { margin: 15px 0 105px; padding: clamp(35px, 6vw, 70px); border: 1px solid var(--line); border-radius: 28px; background: var(--panel); }
.statement-section p, .statement-section strong { display: block; margin: 0; font-size: clamp(34px, 5.8vw, 72px); line-height: 1.04; letter-spacing: -.055em; }
.statement-section p { color: var(--muted); }
.statement-section strong { color: var(--accent); }

footer { min-height: 92px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--muted-2); font-size: 12px; }
.build-version { opacity: 0.4; font-size: 10px; font-variant-numeric: tabular-nums; margin-inline-start: auto; letter-spacing: .04em; }

.library-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.library-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  cursor: pointer;
  transition: border-color .16s ease, transform .16s ease;
}
.library-card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.library-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.library-card-header { margin-bottom: 10px; }
.library-card-header strong { display: block; font-size: 16px; letter-spacing: -.02em; margin-bottom: 2px; color: var(--text); }
.library-card-meta { color: var(--muted); font-size: 12px; }
.library-card-stats { display: flex; gap: 14px; color: var(--muted-2); font-size: 12px; margin-bottom: 12px; }
.library-card-feedback { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.library-empty { color: var(--muted); font-size: 14px; grid-column: 1 / -1; text-align: center; padding: 40px 0; }

.star-rating { display: flex; gap: 1px; }
.star-btn {
  background: none;
  border: none;
  color: var(--muted-2);
  font-size: 18px;
  cursor: pointer;
  padding: 2px;
  line-height: 1;
  transition: color .12s ease;
  font-family: system-ui, -apple-system, sans-serif;
}
.star-btn:hover, .star-btn.active { color: #f3c978; }

.vote-buttons { display: flex; gap: 6px; }
.vote-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 12px;
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
  font-family: system-ui, -apple-system, sans-serif;
  transition: border-color .12s ease, color .12s ease;
}
.vote-btn:hover { border-color: var(--line-strong); color: var(--text); }
.vote-btn.heart-btn:hover { color: #ff6b8a; border-color: #ff6b8a; }
.vote-btn.skip-btn:hover { color: var(--danger); border-color: var(--danger); }
.vote-icon { font-size: 14px; line-height: 1; }
.vote-count { font-size: 11px; font-variant-numeric: tabular-nums; }

.generation-mode-row { display: flex; gap: 14px; margin-top: 10px; }
.radio-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 13px;
  cursor: pointer;
  font-size: 13px;
  color: var(--muted);
  transition: border-color .12s ease, color .12s ease;
}
.radio-option:has(input:checked) { border-color: var(--accent); color: var(--text); }
.radio-option input[type="radio"] { accent-color: var(--accent); }

dialog {
  width: min(560px, calc(100% - 28px));
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 24px;
  background: #0f1318;
  color: var(--text);
  box-shadow: 0 30px 100px rgba(0,0,0,.5);
}
dialog::backdrop { background: rgba(0,0,0,.72); }
.settings-card { padding: 28px; }
.settings-head { display: flex; align-items: start; justify-content: space-between; gap: 20px; }
.settings-head h2 { margin: 0; font-size: 34px; letter-spacing: -.045em; }
.close-button { border: 0; background: transparent; color: var(--muted); font-size: 30px; cursor: pointer; line-height: 1; }
.settings-copy { color: var(--muted); font-size: 14px; margin: 20px 0 24px; }
.settings-card label { display: block; margin-bottom: 8px; font-size: 13px; font-weight: 740; }
.key-row { display: grid; grid-template-columns: 1fr auto; gap: 8px; }
.settings-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 22px; }

@media (max-width: 860px) {
  .nav-links a { display: none; }
  .hero { padding-top: 58px; }
  .player-grid { grid-template-columns: 1fr; }
  .player-main { border-right: 0; border-bottom: 1px solid var(--line); }
  .section-intro { grid-template-columns: 1fr; gap: 20px; }
  .timeline article { grid-template-columns: 110px 1fr; }
  .timeline article p { grid-column: 1 / -1; }
  .feature-grid { grid-template-columns: 1fr; }
  .library-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
}

@media (max-width: 560px) {
  .topbar, main, footer { width: min(calc(100% - 24px), var(--max)); }
  .topbar { height: 66px; }
  .hero h1 { font-size: clamp(54px, 17vw, 78px); }
  .player-main, .session-panel { padding: 23px; }
  .waveform-wrap { height: 105px; margin-top: 30px; border-radius: 10px; }
  .transport { display: grid; grid-template-columns: 1fr 1fr; }
  .primary-control { grid-column: 1 / -1; }
  .timeline article { grid-template-columns: 1fr; gap: 7px; }
  .timeline article p { grid-column: auto; }
  .content-section { padding: 74px 0; }
  footer { align-items: flex-start; flex-direction: row; flex-wrap: wrap; justify-content: center; gap: 8px; padding: 24px 0; }
  .key-row { grid-template-columns: 1fr; }
  .settings-actions { flex-direction: column-reverse; }
  .library-grid { grid-template-columns: 1fr; gap: 10px; }
  .library-card { padding: 16px; border-radius: 12px; }
  .library-card-header strong { font-size: 15px; }
  .library-card-stats { gap: 10px; flex-wrap: wrap; }
  .library-card-feedback { flex-wrap: wrap; gap: 8px; }
  .star-btn { font-size: 20px; }
  .vote-btn { font-size: 13px; padding: 5px 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}