:root {
  color-scheme: light;
  --bg: #f4f4f4;
  --surface: #ffffff;
  --surface-raised: #f1f1f1;
  --text: #0a0a0a;
  --muted: #686868;
  --border: #d6d6d6;
  --strong-border: #9a9a9a;
  --button-text: #ffffff;
  --danger: #b42318;
  --radius: 12px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0a0a0a;
  --surface: #111111;
  --surface-raised: #1b1b1b;
  --text: #f5f5f5;
  --muted: #999999;
  --border: #303030;
  --strong-border: #656565;
  --button-text: #0a0a0a;
  --danger: #ff8a80;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { width: 100%; height: 100%; overflow: hidden; }

body {
  min-width: 320px;
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

button, input, select, textarea { font: inherit; }
button, select, label { -webkit-tap-highlight-color: transparent; }

.app-shell {
  display: grid;
  width: min(1400px, 100%);
  height: 100dvh;
  margin: 0 auto;
  padding: clamp(12px, 2vw, 24px);
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: clamp(10px, 1.5vw, 18px);
}

.hero {
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand, .header-actions, .section-heading > div {
  display: flex;
  align-items: center;
}

.brand { gap: 12px; }
.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  place-items: center;
  background: var(--text);
  color: var(--surface);
  font-weight: 800;
}
.brand h1 { margin: 0; font-size: 1.12rem; letter-spacing: -0.03em; }
.brand p { margin: 2px 0 0; color: var(--muted); font-size: 0.75rem; }
.header-actions { gap: 8px; }

.workspace {
  display: grid;
  min-height: 0;
  grid-template-columns: minmax(320px, 0.8fr) minmax(400px, 1.2fr);
  gap: clamp(10px, 1.5vw, 18px);
}

.control-column {
  display: grid;
  min-height: 0;
  grid-template-rows: minmax(240px, 1.1fr) minmax(320px, 1fr);
  gap: clamp(10px, 1.5vw, 18px);
}

.card {
  min-width: 0;
  min-height: 0;
  padding: clamp(16px, 2vw, 24px);
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}
.section-heading > div { gap: 9px; }
.step { color: var(--muted); font: 600 0.67rem/1 ui-monospace, monospace; }
h2 { margin: 0; font-size: 1rem; letter-spacing: -0.02em; }
.file-name { max-width: 52%; overflow: hidden; color: var(--muted); font-size: 0.75rem; text-overflow: ellipsis; white-space: nowrap; }

.badge, .icon-button {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
}
.badge { padding: 6px 10px; font-size: 0.7rem; }
.icon-button { display: grid; width: 32px; height: 32px; cursor: pointer; place-items: center; color: var(--text); }
.icon-button:hover { border-color: var(--strong-border); }
.theme-icon { font-size: 1rem; line-height: 1; }

.audio-card { display: flex; flex-direction: column; overflow: auto; }
.drop-zone {
  display: flex;
  min-height: 78px;
  flex: 0 0 auto;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border: 1px dashed var(--strong-border);
  border-radius: 9px;
  color: var(--muted);
  transition: background 150ms, border-color 150ms;
}
.drop-zone:hover, .drop-zone.dragging { border-color: var(--text); background: var(--surface-raised); }
.drop-zone:focus-within { outline: 2px solid var(--text); outline-offset: 3px; }
.drop-zone input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }
.upload-icon { font-size: 1.35rem; color: var(--text); }
.drop-copy { display: flex; flex-direction: column; gap: 2px; }
.drop-copy strong { color: var(--text); font-size: 0.84rem; }
.drop-copy small { font-size: 0.72rem; }

.audio-panel { margin-top: 10px; }
audio { display: block; width: 100%; height: 34px; }
.metadata { display: grid; margin: 8px 0 0; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.metadata div { display: flex; min-width: 0; justify-content: space-between; gap: 5px; padding: 7px 8px; border-radius: 6px; background: var(--surface-raised); }
.metadata dt { color: var(--muted); font-size: 0.62rem; text-transform: uppercase; }
.metadata dd { margin: 0; overflow: hidden; font-size: 0.68rem; font-variant-numeric: tabular-nums; text-overflow: ellipsis; white-space: nowrap; }

.queue-panel { display: flex; flex-direction: column; min-height: 100px; flex: 1; margin-top: 12px; }
.queue-heading { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 6px; }
.queue-heading h3 { margin: 0; font-size: 0.75rem; }
#queue-summary { color: var(--muted); font-size: 0.68rem; }
.queue-list { margin: 0; padding: 0; overflow: auto; list-style: none; }
.queue-item { display: flex; align-items: center; gap: 6px; border-bottom: 1px solid var(--border); }
.queue-select { display: flex; flex: 1; flex-direction: column; gap: 3px; min-width: 0; padding: 8px; border: 0; border-radius: 6px; background: transparent; color: var(--text); text-align: left; cursor: pointer; }
.queue-select:hover, .queue-select[aria-pressed="true"] { background: var(--surface-raised); }
.queue-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 0.76rem; }
.queue-status { color: var(--muted); font-size: 0.67rem; }
.queue-item[data-status="failed"] .queue-status { color: var(--danger); }
.queue-action { flex: 0 0 auto; }
.audio-panel { flex: 0 0 auto; }

.settings-card { display: flex; flex-direction: column; overflow: auto; }
.controls-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.controls-grid label:not(.checkbox-label) { display: flex; flex-direction: column; gap: 5px; color: var(--muted); font-size: 0.72rem; }
select {
  width: 100%;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 7px;
  outline: 0;
  background: var(--surface-raised);
  color: var(--text);
  padding: 0 10px;
}
select:focus, textarea:focus { border-color: var(--text); }
.checkbox-label { display: flex; align-items: center; gap: 8px; grid-column: 1 / -1; cursor: pointer; color: var(--muted); font-size: 0.76rem; }
.checkbox-label input { width: 15px; height: 15px; margin: 0; accent-color: var(--text); }

.button-row { display: grid; margin-top: 12px; grid-template-columns: 1fr 1fr; gap: 8px; }
.button { height: 38px; cursor: pointer; border: 1px solid var(--text); border-radius: 7px; padding: 0 12px; font-size: 0.78rem; font-weight: 650; }
.button:disabled { cursor: not-allowed; opacity: 0.35; }
.button.primary { background: var(--text); color: var(--button-text); }
.button.secondary { background: transparent; color: var(--text); }
.button:hover:not(:disabled) { opacity: 0.72; }

.save-options { margin: 12px 0; }
.save-options p { margin: 5px 0 0; color: var(--muted); font-size: 0.7rem; line-height: 1.45; }
.status-block { margin-top: auto; flex: 0 0 auto; padding: 11px; border-radius: 8px; background: var(--surface-raised); }
.status-line { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 9px; color: var(--muted); font-size: 0.78rem; }
.status-line.error { color: var(--danger); }
.status-message, .status-meta { display: flex; min-width: 0; align-items: center; gap: 7px; }
.status-meta { flex: 0 0 auto; font-variant-numeric: tabular-nums; }
.activity-indicator { width: 8px; height: 8px; flex: 0 0 auto; border-radius: 50%; background: var(--strong-border); }
.status-line.working .activity-indicator { background: var(--text); animation: pulse 1s ease-in-out infinite alternate; }
#status-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
progress { display: block; width: 100%; height: 5px; overflow: hidden; border: 0; border-radius: 100px; background: var(--border); }
progress::-webkit-progress-bar { background: var(--border); }
progress::-webkit-progress-value { background: var(--text); }
progress::-moz-progress-bar { background: var(--text); }
progress:not([value]) { background: linear-gradient(90deg, var(--surface-raised), var(--text), var(--surface-raised)); background-size: 200% 100%; animation: loading 1.2s linear infinite; }
.progress-track { position: relative; overflow: hidden; border-radius: 100px; }
.progress-activity { display: none; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(90deg, transparent 0%, var(--strong-border) 50%, transparent 100%); width: 30%; opacity: 0.65; }
.progress-track.working .progress-activity { display: block; animation: progress-sweep 1.5s ease-in-out infinite; }
.queue-progress-block { margin-top: 12px; }
#queue-progress-label { display: block; margin-bottom: 7px; color: var(--muted); font-size: 0.7rem; }
.progress-detail { display: block; min-height: 1em; margin-top: 7px; color: var(--muted); font-size: 0.7rem; overflow-wrap: anywhere; line-height: 1.45; }
@keyframes progress-sweep { from { transform: translateX(-100%); } to { transform: translateX(340%); } }
@keyframes loading { to { background-position: -200% 0; } }
@keyframes pulse { to { opacity: 0.25; transform: scale(0.75); } }

.result-card { display: flex; flex-direction: column; }
.result-card .section-heading { flex: 0 0 auto; }
.result-actions { gap: 10px !important; flex-wrap: wrap; justify-content: flex-end; }
.result-file-name { margin: 0 0 10px; color: var(--muted); font-size: 0.76rem; overflow-wrap: anywhere; }
.result-note { margin: 10px 0 0; color: var(--muted); font-size: 0.7rem; line-height: 1.45; overflow-wrap: anywhere; }
.result-note:empty { display: none; }
.result-note.error { color: var(--danger); }
textarea {
  width: 100%;
  min-height: 0;
  flex: 1 1 auto;
  resize: none;
  border: 0;
  border-radius: 8px;
  outline: 0;
  background: var(--surface-raised);
  color: var(--text);
  padding: clamp(14px, 2vw, 22px);
  font-size: clamp(0.86rem, 1.2vw, 1rem);
  line-height: 1.65;
}
textarea::placeholder { color: var(--muted); }
.text-button { cursor: pointer; border: 0; background: transparent; color: var(--text); font-size: 0.72rem; text-decoration: underline; text-underline-offset: 3px; }
.text-button:disabled { cursor: default; color: var(--muted); opacity: 0.45; }
.segments-panel { max-height: 34%; margin-top: 10px; overflow: auto; border-top: 1px solid var(--border); padding-top: 8px; }
.segments-panel h3 { margin: 0 0 4px; color: var(--muted); font-size: 0.68rem; text-transform: uppercase; }
.segments-panel ol { margin: 0; padding: 0; list-style: none; }
.segments-panel li { display: grid; grid-template-columns: 105px 1fr; gap: 10px; padding: 6px 0; border-bottom: 1px solid var(--border); font-size: 0.75rem; line-height: 1.35; }
.timestamp { color: var(--muted); font: 0.67rem/1.5 ui-monospace, monospace; }

footer { color: var(--muted); text-align: center; font-size: 0.65rem; }

@media (max-width: 760px) {
  .app-shell { padding: 10px; gap: 8px; }
  .brand p, footer { display: none; }
  .workspace { grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 8px; }
  .control-column { grid-template-rows: minmax(220px, 1fr) minmax(320px, 1fr); gap: 8px; }
  .card { padding: 12px; }
  .section-heading { margin-bottom: 10px; }
  .file-name { display: none; }
  .drop-zone { flex-direction: column; gap: 3px; text-align: center; }
  .upload-icon { font-size: 1rem; }
  .metadata { display: none; }
  .controls-grid { grid-template-columns: 1fr; gap: 7px; }
  .checkbox-label { grid-column: 1; }
  .button-row { margin-top: 8px; }
  .button { padding: 0 6px; font-size: 0.7rem; }
}

@media (max-width: 520px) {
  html, body { height: auto; overflow: auto; }
  .app-shell { height: auto; min-height: 100dvh; }
  .workspace { grid-template-columns: minmax(0, 1fr); }
  .control-column { grid-template-rows: auto auto; }
  .audio-card, .settings-card { overflow: visible; }
  .queue-list { max-height: 220px; }
  .result-card { min-height: 350px; }
  .result-card textarea { min-height: 220px; }
  .brand-mark { width: 32px; height: 32px; font-size: 0.8rem; }
  .brand h1 { font-size: 1rem; }
  .badge { display: none; }
  .card { padding: 10px; }
  .step { display: none; }
  h2 { font-size: 0.88rem; }
  select { height: 34px; padding: 0 6px; font-size: 0.68rem; }
  .button-row { grid-template-columns: 1fr 1fr; gap: 5px; }
  .button { height: 32px; }
  .drop-copy strong { font-size: 0.72rem; }
  .drop-copy small { font-size: 0.62rem; }
  .audio-panel audio { height: 28px; }
  .segments-panel li { grid-template-columns: 1fr; gap: 2px; }
}

@media (max-height: 620px) {
  .app-shell { padding-top: 8px; padding-bottom: 8px; gap: 7px; }
  .hero { min-height: 34px; }
  .brand-mark { width: 32px; height: 32px; }
  .control-column { gap: 7px; }
  .card { padding-top: 10px; padding-bottom: 10px; }
  .section-heading { margin-bottom: 8px; }
  .drop-zone { min-height: 55px; }
  .status-block { padding-top: 7px; }
  footer { display: none; }
}

@media (min-width: 521px) and (max-height: 720px) {
  .control-column { grid-template-rows: minmax(0, 1fr) minmax(0, 1.3fr); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}