:root {
  --bg: #f6f6f3;
  --surface: #ffffff;
  --surface-2: #f1f1ec;
  --border: #e3e2dc;
  --text: #1c1c1a;
  --muted: #6d6c66;
  --accent: #4f46e5;
  --accent-soft: #eef0ff;
  --accent-text: #ffffff;
  --ok: #15803d;
  --danger: #c0262d;
  --danger-soft: #fdf0f0;
  --shadow: 0 1px 2px rgb(0 0 0 / 0.04), 0 4px 16px rgb(0 0 0 / 0.04);
  --radius: 14px;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --s0: #4f46e5;
  --s1: #c2410c;
  --s2: #0f766e;
  --s3: #a21caf;
  --s4: #1d4ed8;
  --s5: #4d7c0f;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141413;
    --surface: #1d1d1b;
    --surface-2: #262624;
    --border: #33332f;
    --text: #ecebe6;
    --muted: #9b9a93;
    --accent: #8b8ff8;
    --accent-soft: #25264a;
    --accent-text: #141413;
    --ok: #4ade80;
    --danger: #f87171;
    --danger-soft: #3a1f1f;
    --shadow: none;
    --s0: #a5a8fb;
    --s1: #fdba74;
    --s2: #5eead4;
    --s3: #f0abfc;
    --s4: #93c5fd;
    --s5: #bef264;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

[hidden] { display: none !important; }

button, input { font: inherit; color: inherit; }

h2 { font-size: 1rem; margin: 0; font-weight: 600; }

.page {
  max-width: 860px;
  margin: 0 auto;
  padding-inline: 20px;
  padding-block: 20px 64px;
}

main { display: grid; gap: 16px; }

.muted { color: var(--muted); }
.small { font-size: 0.82rem; font-weight: 400; }

/* ---------- Header ---------- */

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand img { border-radius: 8px; display: block; }
.brand-name { font-weight: 650; letter-spacing: -0.01em; }
.brand-sub { font-size: 0.8rem; color: var(--muted); line-height: 1.2; }

.key-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.85rem;
  cursor: pointer;
  white-space: nowrap;
}
.key-chip:hover { border-color: var(--accent); }
.key-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); flex: none; }
.key-chip.bad .key-dot { background: var(--danger); }

/* ---------- Cards & buttons ---------- */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
}

.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }

.hint { color: var(--muted); font-size: 0.87rem; margin: 6px 0 14px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 10px;
  padding: 8px 14px;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.15s, background 0.15s;
}
.btn:hover { border-color: var(--accent); }
.btn:disabled { opacity: 0.55; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 550; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btn.small { padding: 5px 10px; font-size: 0.85rem; border-radius: 8px; }

.icon-btn {
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 8px;
  color: var(--muted);
  line-height: 1;
}
.icon-btn:hover { background: var(--surface-2); color: var(--text); }

/* ---------- Key panel ---------- */

.key-form { display: flex; gap: 8px; flex-wrap: wrap; }

.key-input-wrap {
  flex: 1 1 260px;
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  padding-right: 4px;
}
.key-input-wrap:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.key-input-wrap input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  padding: 8px 12px;
  font-family: var(--mono);
  font-size: 0.9rem;
}

.key-footer { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 10px; min-height: 28px; }
.key-status { font-size: 0.87rem; color: var(--muted); }
.key-status.ok { color: var(--ok); }
.key-status.bad { color: var(--danger); }

/* ---------- Drop zone ---------- */

.drop {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 36px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  outline: none;
}
.drop:hover, .drop:focus-visible { border-color: var(--accent); }
.drop.dragover { border-color: var(--accent); background: var(--accent-soft); }
.drop.disabled { pointer-events: none; opacity: 0.5; }
.drop-icon { color: var(--accent); margin-bottom: 8px; }
.drop-title { font-weight: 550; }
.drop-sub { color: var(--muted); font-size: 0.85rem; margin-top: 6px; max-width: 520px; margin-inline: auto; }
.link { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Progress ---------- */

.progress-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }

.steps { list-style: none; padding: 0; margin: 14px 0 12px; display: grid; gap: 8px; }
.step { display: flex; align-items: baseline; gap: 10px; color: var(--muted); }
.step-dot {
  width: 10px; height: 10px; border-radius: 50%;
  border: 2px solid var(--border);
  flex: none;
  transform: translateY(1px);
}
.step-label { flex: none; }
.step-detail { font-size: 0.85rem; font-variant-numeric: tabular-nums; margin-left: auto; text-align: right; }
.step.active { color: var(--text); }
.step.active .step-dot { border-color: var(--accent); background: var(--accent); animation: pulse 1.4s ease-in-out infinite; }
.step.done .step-dot { border-color: var(--ok); background: var(--ok); }
.step.failed { color: var(--danger); }
.step.failed .step-dot { border-color: var(--danger); background: var(--danger); }

@keyframes pulse { 50% { opacity: 0.45; } }

.bar { height: 6px; border-radius: 99px; background: var(--surface-2); overflow: hidden; }
.bar-fill { height: 100%; width: 0; background: var(--accent); border-radius: inherit; transition: width 0.3s; }
.bar.indeterminate .bar-fill { width: 30%; animation: slide 1.3s ease-in-out infinite; }
@keyframes slide { from { transform: translateX(-100%); } to { transform: translateX(340%); } }

.alert {
  margin-top: 14px;
  background: var(--danger-soft);
  color: var(--danger);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 0.9rem;
}
.alert-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.alert .btn.ghost { color: var(--text); }

/* ---------- Result ---------- */

.result {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.result-head { padding: 18px 20px 10px; }

.title-input {
  width: 100%;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  font-size: 1.35rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  padding: 2px 6px;
  margin-left: -7px;
}
.title-input:hover { border-color: var(--border); }
.title-input:focus { outline: 0; border-color: var(--accent); }

.meta { color: var(--muted); font-size: 0.87rem; }

.toolbar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 10px;
  padding: 10px 20px;
  background: var(--surface);
  border-block: 1px solid var(--border);
}
.spacer { flex: 1; }

.switch { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; user-select: none; font-size: 0.9rem; }
.switch input { accent-color: var(--accent); width: 16px; height: 16px; margin: 0; }

.names { padding: 0 20px; border-bottom: 1px solid var(--border); }
.names summary { cursor: pointer; padding: 10px 0; color: var(--muted); font-size: 0.9rem; }
.names-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; padding-bottom: 14px; }
.name-field { display: flex; align-items: center; gap: 8px; }
.name-field span { width: 10px; height: 10px; border-radius: 50%; flex: none; }
.name-field input {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  padding: 6px 10px;
}
.name-field input:focus { outline: 0; border-color: var(--accent); }

.transcript { padding: 18px 20px 26px; }
.transcript .empty { color: var(--muted); }

.para {
  display: grid;
  grid-template-columns: 5.2rem minmax(0, 1fr);
  column-gap: 14px;
  margin-bottom: 14px;
}
.transcript.no-time .para { grid-template-columns: minmax(0, 1fr); }
.para .speaker { grid-column: -2; font-weight: 600; font-size: 0.9rem; margin-top: 10px; margin-bottom: 2px; }
.para .time {
  grid-column: 1;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  padding-top: 0.2rem;
  font-variant-numeric: tabular-nums;
}
.para p { grid-column: -2; margin: 0; font-size: 1rem; line-height: 1.65; }

.c0 { color: var(--s0); } .c1 { color: var(--s1); } .c2 { color: var(--s2); }
.c3 { color: var(--s3); } .c4 { color: var(--s4); } .c5 { color: var(--s5); }
.bg0 { background: var(--s0); } .bg1 { background: var(--s1); } .bg2 { background: var(--s2); }
.bg3 { background: var(--s3); } .bg4 { background: var(--s4); } .bg5 { background: var(--s5); }

/* ---------- History ---------- */

.history h2 { margin: 8px 0 10px; }
.history-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.history-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 4px 6px 4px 14px;
}
.history-item.current { border-color: var(--accent); }
.history-open {
  flex: 1;
  min-width: 0;
  text-align: left;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 6px 0;
}
.history-title { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 550; }
.history-meta { display: block; color: var(--muted); font-size: 0.8rem; }

/* ---------- Toast ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg);
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 0.9rem;
  z-index: 10;
  max-width: calc(100vw - 32px);
}

/* ---------- Narrow screens ---------- */

@media (max-width: 560px) {
  .page { padding-inline: 16px; padding-block: 14px 48px; }
  .card, .result-head, .transcript { padding-inline: 16px; }
  .toolbar, .names { padding-inline: 16px; }
  .brand-sub { display: none; }
  .para { grid-template-columns: minmax(0, 1fr); }
  .para .time { padding-top: 0; }
  .para .speaker { grid-column: 1; }
  .para p { grid-column: 1; }
  .step { flex-wrap: wrap; }
  .step-detail { margin-left: 20px; text-align: left; width: 100%; }
  .toolbar .spacer { flex-basis: 100%; height: 0; }
}