:root {
  --bg: #0b0d12;
  --bg-2: #11151d;
  --surface: #171d28;
  --surface-2: #1b2330;
  --surface-3: #242e3d;
  --border: rgba(255, 255, 255, 0.08);
  --text: #eef3ff;
  --text-dim: #a7b2c7;
  --accent: #7c5cff;
  --accent-2: #22d3ee;
  --accent-3: #ff9a62;
  --shadow: 0 28px 60px rgba(4, 6, 12, 0.55);
  --shadow-soft: 0 18px 34px rgba(14, 18, 30, 0.34);
  --radius: 20px;
  --radius-sm: 12px;
  --font: "Inter", sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background:
    radial-gradient(900px 500px at 10% -10%, rgba(124, 92, 255, 0.22), transparent 42%),
    radial-gradient(800px 480px at 100% 0%, rgba(34, 211, 238, 0.12), transparent 38%),
    var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, canvas { display: block; max-width: 100%; }
a { color: inherit; }
button, input, select, textarea { font: inherit; }
[hidden] { display: none !important; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.page-shell {
  width: min(1260px, calc(100% - 24px));
  margin: 0 auto;
  padding: 18px 0 40px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: rgba(14, 18, 26, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-soft);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-size: 0.8rem;
  box-shadow: 0 12px 28px rgba(124, 92, 255, 0.3);
}

.brand-copy {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.brand-copy h1 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.brand-sub {
  color: var(--text-dim);
  font-size: 0.75rem;
  font-weight: 600;
}

.site-nav {
  display: none;
  align-items: center;
  gap: 22px;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.site-nav a {
  text-decoration: none;
  transition: color 0.15s ease;
}

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

.api-key-box {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px 6px 10px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255,255,255,0.02);
}

.api-key-box input {
  width: 170px;
  min-height: 38px;
  border: 0;
  border-radius: 8px;
  padding: 8px 10px;
  color: var(--text);
  background: rgba(10, 13, 19, 0.9);
}

.api-key-box input::placeholder {
  color: #8a93a8;
}

.api-key-box button,
.primary-btn,
.secondary-btn,
.btn,
.btn-primary {
  border: 0;
  cursor: pointer;
  text-decoration: none;
}

.api-key-box button {
  min-height: 38px;
  padding: 8px 12px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-weight: 700;
}

.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.15s ease, box-shadow 0.2s ease;
}

.primary-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 18px 30px rgba(124, 92, 255, 0.28);
}

.secondary-btn {
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
  color: var(--text);
}

.primary-btn:hover,
.secondary-btn:hover,
.api-key-box button:hover {
  transform: translateY(-1px);
}

.page-main {
  padding-top: 18px;
}

.card-panel {
  border: 1px solid var(--border);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,0.018), rgba(255,255,255,0.014));
  box-shadow: var(--shadow-soft);
}

.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: center;
  padding: 26px 16px;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.eyebrow {
  display: inline-flex;
  align-self: flex-start;
  padding: 7px 12px;
  border: 1px solid rgba(124, 92, 255, 0.35);
  border-radius: 999px;
  background: rgba(124, 92, 255, 0.1);
  color: #d9d0ff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-copy h2 {
  margin: 0;
  max-width: 700px;
  font-size: clamp(2.5rem, 6vw, 4.9rem);
  letter-spacing: -0.08em;
  line-height: 0.96;
}

.hero-copy p {
  margin: 0;
  max-width: 620px;
  color: var(--text-dim);
  font-size: 1.04rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

.stat-box {
  min-width: 120px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255,255,255,0.02);
}

.stat-box strong,
.stat-box span {
  display: block;
}

.stat-box strong {
  font-size: 1.1rem;
  letter-spacing: -0.04em;
}

.stat-box span {
  color: var(--text-dim);
  font-size: 0.72rem;
  text-transform: lowercase;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.dashboard-panel {
  width: min(100%, 560px);
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(20, 25, 35, 0.96), rgba(10, 13, 18, 0.98));
  box-shadow: var(--shadow);
}

.dashboard-topbar {
  display: flex;
  gap: 10px;
  padding-bottom: 12px;
}

.dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-purple { background: #8b5cf6; }
.dot-cyan { background: #22d3ee; }
.dot-orange { background: #ff9a62; }

.dashboard-screen {
  padding: 16px;
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(17,22,32,0.96), rgba(12,14,20,0.96));
}

.screen-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.screen-badge {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(34, 211, 238, 0.25);
  background: rgba(34, 211, 238, 0.12);
  color: #d6fbff;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.screen-text {
  color: var(--text-dim);
  font-size: 0.8rem;
  font-weight: 600;
}

.screen-visual {
  position: relative;
  height: 260px;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
  background: linear-gradient(140deg, rgba(13,17,25,0.96), rgba(79,47,95,0.73), rgba(13,18,27,0.98));
}

.visual-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(8px);
}

.glow-one {
  width: 200px;
  height: 200px;
  left: 32px;
  top: 20px;
  background: radial-gradient(circle, rgba(255,154,98,0.95), rgba(255,154,98,0.18) 58%, transparent 72%);
}

.glow-two {
  width: 230px;
  height: 230px;
  right: -20px;
  bottom: -18px;
  background: radial-gradient(circle, rgba(34,211,238,0.85), rgba(34,211,238,0.2) 55%, transparent 70%);
}

.visual-bar {
  position: absolute;
  left: 12%;
  right: 12%;
  top: 52%;
  height: 2px;
  background: linear-gradient(90deg, rgba(255,255,255,0), rgba(255,255,255,0.9), rgba(255,255,255,0));
  box-shadow: 0 0 24px rgba(255,255,255,0.3);
}

.screen-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.screen-stats div {
  padding: 12px 10px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255,255,255,0.02);
}

.screen-stats span {
  display: block;
  color: var(--text-dim);
  font-size: 0.7rem;
  margin-bottom: 4px;
}

.screen-stats strong {
  font-size: 1rem;
  letter-spacing: -0.04em;
}

.feature-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  padding: 26px 0 0;
}

.feature-card {
  padding: 20px 18px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(255,255,255,0.02);
  box-shadow: var(--shadow-soft);
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  margin-bottom: 12px;
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.18), rgba(34, 211, 238, 0.12));
  font-size: 1.3rem;
}

.feature-card h3 {
  margin: 0 0 8px;
  font-size: 1.12rem;
}

.feature-card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.demo-shell {
  margin-top: 28px;
  overflow: hidden;
}

.section-head {
  padding: 18px 18px 0;
}

.section-head h2 {
  margin: 10px 0 0;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  letter-spacing: -0.06em;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  padding-top: calc(10px + env(safe-area-inset-top));
  background: rgba(11, 13, 18, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.topbar .brand h1 {
  margin: 0;
  font-size: 1.08rem;
}

.topbar .brand-sub { display: none; }

.topbar-actions { display: flex; align-items: center; }

.workspace {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 12px;
  min-height: 0;
}

.statusbar {
  padding: 8px 14px;
  border-top: 1px solid var(--border);
  background: var(--bg-2);
  color: var(--text-dim);
  font-size: 0.85rem;
}

.statusbar p { margin: 0; }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  box-shadow: var(--shadow-soft);
  min-width: 0;
}

.panel-title {
  margin: 0 0 12px;
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.sub-title {
  margin: 16px 0 8px;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--text);
}

.stage { display: flex; flex-direction: column; align-items: center; }
.controls { display: flex; flex-direction: column; gap: 12px; }

.canvas-wrap {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #000;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px;
  overflow: hidden;
}

#previewCanvas {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 52vh;
  max-height: 52dvh;
  background: #000;
  border-radius: 8px;
  object-fit: contain;
  touch-action: manipulation;
}

.transport {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
}

.transport input[type="range"] { flex: 1; min-width: 0; }

.time-label {
  min-width: 90px;
  font-variant-numeric: tabular-nums;
  font-size: 0.8rem;
  color: var(--text-dim);
  white-space: nowrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 10px 16px;
  font: inherit;
  font-weight: 700;
  color: var(--text);
  background: var(--surface-3);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: background 0.15s ease, transform 0.1s ease;
}

.btn:hover { background: #2a3345; }
.btn:active { transform: translateY(1px); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.55; cursor: not-allowed; }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #5d72ff);
  border-color: transparent;
  color: #fff;
}

.btn-block { width: 100%; }

.btn-row { display: flex; flex-wrap: wrap; gap: 8px; }
.btn-row .btn { flex: 1 1 140px; }

.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.field > label, .field > span { font-size: 0.84rem; font-weight: 600; color: var(--text-dim); }
.field-inline { flex-direction: row; align-items: center; gap: 8px; margin: 0; }
.field-inline > span { display: none; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

input[type="text"],
input[type="number"],
select,
textarea,
input[type="file"] {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  font: inherit;
  color: var(--text);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
}

select { appearance: none; -webkit-appearance: none; padding-right: 32px; background-image: linear-gradient(45deg, transparent 50%, var(--text-dim) 50%), linear-gradient(135deg, var(--text-dim) 50%, transparent 50%); background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%; background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }
textarea { min-height: 96px; resize: vertical; }
input::placeholder, textarea::placeholder { color: #7d869a; }
input[type="file"] { padding: 8px; cursor: pointer; }
input[type="file"]::file-selector-button { margin-right: 10px; padding: 8px 12px; font: inherit; font-weight: 700; color: var(--text); background: var(--surface-3); border: 1px solid var(--border); border-radius: 8px; cursor: pointer; }
input[type="color"] { width: 100%; height: 44px; padding: 4px; background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px; cursor: pointer; }
input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 28px; background: transparent; cursor: pointer; }
input[type="range"]::-webkit-slider-runnable-track { height: 6px; background: var(--surface-3); border-radius: 999px; }
input[type="range"]::-moz-range-track { height: 6px; background: var(--surface-3); border-radius: 999px; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 20px; height: 20px; margin-top: -7px; border: 2px solid #fff; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-2)); }
input[type="range"]::-moz-range-thumb { width: 16px; height: 16px; border: 2px solid #fff; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-2)); }
.slider-field { margin-bottom: 8px; }
.hint { color: var(--text-dim); font-size: 0.8rem; margin: 4px 0 0; }
.stat { margin: 10px 0 0; color: var(--text-dim); }
.stat strong { color: var(--accent-2); font-variant-numeric: tabular-nums; }
#exportProgress { width: 100%; height: 12px; appearance: none; -webkit-appearance: none; border: 0; border-radius: 999px; overflow: hidden; background: var(--surface-3); }
#exportProgress::-webkit-progress-bar { background: var(--surface-3); border-radius: 999px; }
#exportProgress::-webkit-progress-value { background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: 999px; }
#exportProgress::-moz-progress-bar { background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: 999px; }

.tabs { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 4px; border-bottom: 1px solid var(--border); }
.tab { flex: 0 0 auto; min-height: 44px; padding: 10px 14px; font: inherit; font-weight: 600; color: var(--text-dim); background: transparent; border: 0; border-bottom: 3px solid transparent; border-radius: 8px 8px 0 0; cursor: pointer; }
.tab:hover { color: var(--text); background: var(--surface-2); }
.tab[aria-selected="true"] { color: var(--text); background: var(--surface-2); border-bottom-color: var(--accent-2); }
.tab-panel { padding-top: 6px; animation: fadeIn 0.2s ease; }
.tab-panel[hidden] { display: none !important; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }

.chips { display: flex; flex-wrap: wrap; gap: 6px; padding-top: 4px; }
.chip { display: inline-flex; align-items: center; padding: 5px 12px; border: 1px solid var(--border); border-radius: 999px; color: var(--text-dim); background: var(--surface-2); font-size: 0.78rem; font-weight: 600; }

#presetGrid, .preset-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 8px; max-height: 340px; overflow-y: auto; padding: 2px; margin-bottom: 12px; }
.preset-card { display: flex; flex-direction: column; justify-content: flex-end; gap: 2px; min-height: 72px; padding: 10px; text-align: left; color: var(--text); background: linear-gradient(160deg, var(--surface-2), var(--bg-2)); border: 1px solid var(--border); border-radius: 10px; cursor: pointer; transition: border-color 0.15s ease, transform 0.12s ease; }
.preset-card:hover { border-color: rgba(124,92,255,0.7); transform: translateY(-1px); }
.preset-card.active { border-color: var(--accent-2); background: linear-gradient(160deg, rgba(124,92,255,0.18), rgba(34,211,238,0.08)); box-shadow: inset 0 0 0 1px rgba(34,211,238,0.28); }
.user-presets, .clip-list { list-style: none; margin: 0 0 12px; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.user-presets li, .clip-list li { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 10px; background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px; font-size: 0.88rem; }
.clip-list li.selected, .clip-list li[aria-selected="true"] { border-color: var(--accent-2); }
#timeline, .timeline { display: flex; flex-direction: column; gap: 6px; padding: 8px; background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px; overflow-x: auto; }
.tl-track { position: relative; display: flex; align-items: stretch; gap: 3px; min-height: 48px; padding: 4px; background: repeating-linear-gradient(90deg, rgba(255,255,255,0.03) 0 1px, transparent 1px 40px), var(--surface); border-radius: 8px; }
.tl-clip { position: relative; flex: 0 0 auto; min-width: 36px; padding: 6px 8px; font-size: 0.72rem; font-weight: 700; color: #fff; background: linear-gradient(135deg, #4b3fb8, #6c60f9); border: 1px solid rgba(255,255,255,0.16); border-radius: 7px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; cursor: pointer; }
.tl-clip.selected { border-color: var(--accent-2); box-shadow: 0 0 0 2px rgba(34,211,238,0.35); }
.tl-track[data-track="audio"] .tl-clip { background: linear-gradient(135deg, #0e7c91, #1cc3d3); }

@media (min-width: 640px) {
  .site-nav { display: flex; }
  .brand-sub { display: inline; }
  .field-inline > span { display: inline; }
  .field-inline select { width: auto; min-width: 150px; }
}

@media (min-width: 960px) {
  .hero { grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.9fr); }
  .workspace { display: grid; grid-template-columns: minmax(280px, 1fr) minmax(340px, 440px); align-items: start; padding: 16px; gap: 16px; }
  .stage { position: sticky; top: 72px; }
  #previewCanvas { max-height: calc(100vh - 260px); }
  .controls { max-height: calc(100vh - 150px); overflow-y: auto; }
}

@media (min-width: 1280px) {
  .workspace { grid-template-columns: 300px minmax(320px, 1fr) 420px; }
  #presetGrid, .preset-grid { max-height: 420px; }
}

@media (max-width: 640px) {
  .page-shell { width: min(100%, calc(100% - 14px)); }
  .site-header { flex-wrap: wrap; justify-content: space-between; padding: 10px 12px; }
  .site-nav { display: none; }
  .api-key-box { width: 100%; order: 3; }
  .api-key-box input { width: 100%; }
  .hero-copy h2 { max-width: 100%; }
  .screen-stats { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

.noscript {
  margin: 16px;
  padding: 12px 16px;
  border: 1px solid rgba(255, 92, 122, 0.45);
  border-radius: 10px;
  background: rgba(255, 92, 122, 0.06);
  color: var(--text);
}

@media (forced-colors: active) {
  .btn, .tab, .preset-card, .tl-clip { border: 1px solid ButtonText; }
  .tab[aria-selected="true"], .preset-card.active, .tl-clip.selected { outline: 2px solid Highlight; }
}