/* ------------------------------------------------------------------ tokens */
:root {
  --bg: #f5f6f9;
  --panel: #ffffff;
  --panel-2: #f8f9fb;
  --border: #e3e6ec;
  --border-strong: #cfd4dd;
  --text: #171a21;
  --text-2: #4b5363;
  --muted: #7a8394;
  --accent: #4f62f0;
  --accent-2: #7a5cf2;
  --accent-soft: #eef0fe;
  --accent-text: #3241c9;
  --ok: #138a52;
  --ok-soft: #e6f6ee;
  --warn: #a15c00;
  --warn-soft: #fff4e0;
  --err: #c62f3b;
  --err-soft: #fdecee;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 4px 16px rgba(16, 24, 40, .06);
  --shadow-lg: 0 20px 60px rgba(16, 24, 40, .22);
  --radius: 14px;
  --radius-sm: 9px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e1015;
    --panel: #161920;
    --panel-2: #1b1f27;
    --border: #2a2f3a;
    --border-strong: #394050;
    --text: #e9ecf2;
    --text-2: #b6bdcb;
    --muted: #868fa0;
    --accent: #7184ff;
    --accent-2: #9b7dff;
    --accent-soft: #232845;
    --accent-text: #aab5ff;
    --ok: #3ccf8e;
    --ok-soft: #12291f;
    --warn: #f0b04a;
    --warn-soft: #2d2412;
    --err: #ff6b77;
    --err-soft: #2f1619;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, .55);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0e1015;
  --panel: #161920;
  --panel-2: #1b1f27;
  --border: #2a2f3a;
  --border-strong: #394050;
  --text: #e9ecf2;
  --text-2: #b6bdcb;
  --muted: #868fa0;
  --accent: #7184ff;
  --accent-2: #9b7dff;
  --accent-soft: #232845;
  --accent-text: #aab5ff;
  --ok: #3ccf8e;
  --ok-soft: #12291f;
  --warn: #f0b04a;
  --warn-soft: #2d2412;
  --err: #ff6b77;
  --err-soft: #2f1619;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, .55);
  color-scheme: dark;
}

/* ------------------------------------------------------------------ base */
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 14px/1.5 var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-text); }
h1, h2, h3 { margin: 0; line-height: 1.25; }
h2 { font-size: 15px; font-weight: 650; letter-spacing: -.01em; }
button, input, select, textarea { font: inherit; color: inherit; }
svg.i { width: 18px; height: 18px; flex: none; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
[hidden] { display: none !important; }
.muted { color: var(--muted); }
.spacer { flex: 1; }
code, .mono { font-family: var(--mono); font-size: 12.5px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ------------------------------------------------------------------ top bar */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand h1 { font-size: 18px; font-weight: 700; letter-spacing: -.02em; }
.tagline { margin: 0; color: var(--muted); font-size: 12.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }

.engine-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text-2);
  font-size: 12.5px;
  cursor: pointer;
  max-width: 46vw;
}
.engine-chip span:last-child { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dot { width: 8px; height: 8px; border-radius: 50%; flex: none; background: var(--muted); }
.dot[data-state="loading"] { background: var(--warn); animation: pulse 1.2s infinite; }
.dot[data-state="ready"] { background: var(--ok); }
.dot[data-state="busy"] { background: var(--accent); animation: pulse 1s infinite; }
.dot[data-state="error"] { background: var(--err); }
@keyframes pulse { 50% { opacity: .35; } }

.icon-btn {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  padding: 0;
}
.icon-btn:hover { background: var(--panel-2); border-color: var(--border); color: var(--text); }
.icon-btn.small { width: 28px; height: 28px; border-radius: 8px; }
.icon-btn.small svg.i { width: 16px; height: 16px; }

.notice {
  margin: 12px 24px 0;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--warn-soft);
  color: var(--warn);
  border: 1px solid color-mix(in srgb, var(--warn) 30%, transparent);
  font-size: 13px;
}

.diag {
  margin: 12px 24px 0;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--err-soft);
  border: 1px solid color-mix(in srgb, var(--err) 35%, transparent);
  color: var(--text);
  font-size: 13px;
}
.diag-head strong { color: var(--err); }
.diag-cause { margin: 6px 0 0; }
.diag-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.diag-details { margin-top: 10px; }
.diag-details summary { cursor: pointer; color: var(--text-2); font-weight: 600; }
.diag-details ul { list-style: none; margin: 8px 0; padding: 0; display: flex; flex-direction: column; gap: 3px; }
.diag-details li.ok span:first-child { color: var(--ok); }
.diag-details li.bad span:first-child { color: var(--err); }
.diag-errors { margin: 8px 0; font-family: var(--mono); font-size: 12px; color: var(--text-2); word-break: break-word; }
@media (max-width: 640px) { .diag { margin: 10px 16px 0; } }

/* ------------------------------------------------------------------ layout */
.layout {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 460px;
  gap: 20px;
  padding: 20px 24px;
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  align-items: start;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
  min-width: 0;
}
.settings-panel { position: sticky; top: 82px; max-height: calc(100vh - 100px); overflow: auto; }
.panel-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.head-actions { margin-left: auto; display: flex; gap: 8px; }

/* ------------------------------------------------------------------ buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: var(--panel);
  color: var(--text);
  font-weight: 560;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  transition: background .12s, border-color .12s, transform .05s;
}
.btn:hover { background: var(--panel-2); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.btn.ghost { border-color: transparent; background: transparent; color: var(--text-2); }
.btn.ghost:hover { background: var(--panel-2); color: var(--text); }
.btn.small { padding: 5px 10px; font-size: 12.5px; border-radius: 8px; }
.btn.small svg.i { width: 15px; height: 15px; }
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--accent) 35%, transparent);
}
.btn.primary:hover { filter: brightness(1.06); }
.btn.danger { background: var(--err-soft); color: var(--err); border-color: color-mix(in srgb, var(--err) 35%, transparent); }
.btn.big { width: 100%; padding: 13px 18px; font-size: 15.5px; border-radius: 12px; }

/* ------------------------------------------------------------------ drop zone */
.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-align: center;
  padding: 48px 20px;
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--panel-2);
  color: var(--text-2);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.dropzone:hover, .dropzone.over { border-color: var(--accent); background: var(--accent-soft); }
.dropzone strong { font-size: 16px; color: var(--text); }
.drop-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 6px;
}
.drop-icon svg.i { width: 28px; height: 28px; }
.drop-formats { margin-top: 10px; font-size: 12px; color: var(--muted); max-width: 520px; }
.files-panel.has-files .dropzone { padding: 14px; flex-direction: row; gap: 10px; border-width: 1.5px; }
.files-panel.has-files .dropzone .drop-icon { width: 32px; height: 32px; margin: 0; border-radius: 9px; }
.files-panel.has-files .dropzone .drop-icon svg.i { width: 18px; height: 18px; }
.files-panel.has-files .dropzone strong { font-size: 14px; }
.files-panel.has-files .dropzone .drop-formats, .files-panel.has-files .dropzone > span:not(.drop-icon) { display: none; }

.drag-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  backdrop-filter: blur(2px);
  pointer-events: none;
}
.drag-overlay div {
  padding: 22px 34px;
  border-radius: 18px;
  background: var(--panel);
  border: 2px dashed var(--accent);
  font-size: 18px;
  font-weight: 650;
  box-shadow: var(--shadow-lg);
}

/* ------------------------------------------------------------------ file list */
.file-list { list-style: none; margin: 14px 0 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.file {
  display: grid;
  grid-template-columns: auto 88px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel);
  transition: border-color .15s, box-shadow .15s;
}
.file.selected { border-color: color-mix(in srgb, var(--accent) 55%, var(--border)); box-shadow: 0 0 0 3px var(--accent-soft); }
.file > .check { padding-top: 26px; }
.thumb {
  width: 88px;
  height: 60px;
  border-radius: 8px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  overflow: hidden;
  color: var(--muted);
  cursor: pointer;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumb svg.i { width: 24px; height: 24px; }
.file-main { min-width: 0; cursor: pointer; }
.file-name { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-meta { color: var(--muted); font-size: 12.5px; margin-top: 2px; display: flex; flex-wrap: wrap; gap: 4px 10px; }
.file-meta .tag {
  display: inline-block;
  padding: 0 6px;
  border-radius: 5px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 11.5px;
  line-height: 18px;
}
.file-actions { display: flex; gap: 2px; }

.status { margin-top: 8px; font-size: 12.5px; }
.status.error { color: var(--err); }
.status.warn { color: var(--warn); }
.progress-wrap { display: flex; flex-direction: column; gap: 5px; }
.progress {
  height: 7px;
  border-radius: 99px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  overflow: hidden;
}
.progress > i {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 99px;
  transition: width .25s ease;
}
.progress.indeterminate > i { width: 30% !important; animation: indet 1.2s infinite ease-in-out; }
@keyframes indet { 0% { transform: translateX(-100%); } 100% { transform: translateX(340%); } }
.progress-text { display: flex; gap: 10px; color: var(--text-2); flex-wrap: wrap; }
.progress-text b { font-weight: 600; color: var(--text); }

.outputs { margin-top: 8px; display: flex; flex-direction: column; gap: 6px; }
.output {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 7px 7px 10px;
  border-radius: 10px;
  background: var(--ok-soft);
  border: 1px solid color-mix(in srgb, var(--ok) 25%, transparent);
  font-size: 12.5px;
  min-width: 0;
}
.output .o-icon { color: var(--ok); display: grid; flex: none; }
.output .o-text { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.output .o-name { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--text); }
.output .o-size { color: var(--text-2); }
.output .o-actions { display: flex; align-items: center; gap: 2px; flex: none; }
.output.failed { background: var(--err-soft); border-color: color-mix(in srgb, var(--err) 25%, transparent); align-items: flex-start; }
.output.failed .o-icon { color: var(--err); padding-top: 2px; }
.output.failed .o-size { color: var(--err); }
.saved-note { color: var(--ok); }
.delta.smaller { color: var(--ok); }
.delta.bigger { color: var(--warn); }

.batch-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  flex-wrap: wrap;
}

/* ------------------------------------------------------------------ format button */
.format-btn {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas: "main chev" "desc chev";
  text-align: left;
  gap: 2px 12px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1.5px solid var(--border-strong);
  background: var(--panel-2);
  cursor: pointer;
}
.format-btn:hover { border-color: var(--accent); }
.format-btn-main { grid-area: main; display: flex; align-items: baseline; gap: 8px; }
.format-name { font-size: 18px; font-weight: 700; letter-spacing: -.01em; }
.format-ext { color: var(--muted); font-family: var(--mono); font-size: 12.5px; }
.format-desc { grid-area: desc; color: var(--text-2); font-size: 12.5px; }
.chev { grid-area: chev; align-self: center; color: var(--muted); display: grid; }

.quick-formats { display: flex; flex-direction: column; gap: 6px; margin: 10px 0 18px; }
.qf-row { display: flex; align-items: center; gap: 8px; }
.qf-label { flex: none; width: 42px; font-size: 11px; font-weight: 650; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.chip {
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text-2);
  font-size: 12.5px;
  font-weight: 560;
  cursor: pointer;
}
.chip:hover { border-color: var(--border-strong); color: var(--text); }
.chip[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent-text); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }

.label { font-size: 12px; font-weight: 650; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 8px; }
.hint { color: var(--muted); font-size: 12.5px; margin: 8px 0 0; }
.hint.center { text-align: center; }

/* ------------------------------------------------------------------ segmented */
.segmented {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  padding: 4px;
  border-radius: 12px;
  background: var(--panel-2);
  border: 1px solid var(--border);
}
.segmented button {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  padding: 7px 6px;
  border-radius: 9px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-2);
  font-weight: 580;
  font-size: 13px;
  cursor: pointer;
  position: relative;
  line-height: 1.25;
}
.segmented button:hover { color: var(--text); background: var(--panel); }
.segmented button[aria-checked="true"] { background: var(--panel); color: var(--accent-text); border-color: var(--border); box-shadow: var(--shadow); }
.segmented .q-est { font-size: 11px; font-weight: 500; color: var(--muted); font-variant-numeric: tabular-nums; }
.segmented button[aria-checked="true"] .q-est { color: var(--text-2); }
.segmented .q-rec {
  font-size: 9.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--ok);
}
.segmented button.rec { border-color: color-mix(in srgb, var(--ok) 45%, transparent); }

/* ------------------------------------------------------------------ tips */
.tips { margin-top: 12px; display: flex; flex-direction: column; gap: 6px; }
.tips:empty { display: none; }
.tips-head { font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 6px; min-width: 0; }
.tips-head b { color: var(--text-2); font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tip {
  display: flex;
  gap: 8px;
  padding: 9px 11px;
  border-radius: 10px;
  font-size: 12.5px;
  line-height: 1.45;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text-2);
}
.tip svg.i { width: 16px; height: 16px; flex: none; margin-top: 1px; }
.tip > div { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; }
.tip.tone-rec { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 30%, transparent); color: var(--text); }
.tip.tone-rec svg.i { color: var(--accent); }
.tip.tone-good svg.i { color: var(--ok); }
.tip.tone-warn { background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 25%, transparent); color: var(--text); }
.tip.tone-warn svg.i { color: var(--warn); }
.tip.tone-info svg.i { color: var(--muted); }

.size-row { margin-top: 12px; padding: 12px; border-radius: 12px; background: var(--panel-2); border: 1px solid var(--border); display: flex; flex-direction: column; gap: 10px; }

/* ------------------------------------------------------------------ plan box */
.plan { margin: 14px 0 6px; display: flex; flex-direction: column; gap: 8px; }
.plan:empty { display: none; }
.plan-card { padding: 12px; border-radius: 12px; border: 1px solid var(--border); background: var(--panel-2); font-size: 13px; }
.plan-title { font-size: 12px; color: var(--muted); margin-bottom: 8px; display: flex; gap: 6px; align-items: center; min-width: 0; }
.plan-title svg.i { width: 15px; height: 15px; }
.plan-title b { color: var(--text-2); font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.plan-row { display: grid; grid-template-columns: 62px 1fr; gap: 8px; padding: 2px 0; }
.plan-row > span:first-child { color: var(--muted); font-size: 12px; padding-top: 1px; }
.plan-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; margin-bottom: 10px; }
.stat { background: var(--panel); border: 1px solid var(--border); border-radius: 9px; padding: 6px 8px; display: flex; flex-direction: column; min-width: 0; }
.stat small { font-size: 10.5px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); font-weight: 650; }
.stat b { font-size: 13px; font-weight: 650; line-height: 1.3; }
.stat em { font-style: normal; font-size: 11.5px; color: var(--muted); }
.stat em.smaller { color: var(--ok); }
.stat em.bigger { color: var(--warn); }
.tone-good { color: var(--ok); }
.tone-ok { color: var(--accent-text); }
.tone-warn, .tone-low { color: var(--warn); }
.pstream { padding: 8px 0; border-top: 1px solid var(--border); display: flex; flex-direction: column; align-items: flex-start; gap: 4px; }
.ps-head { display: flex; gap: 8px; align-items: baseline; min-width: 0; width: 100%; }
.ps-kind { font-size: 11px; text-transform: uppercase; letter-spacing: .05em; font-weight: 700; color: var(--muted); flex: none; min-width: 52px; }
.ps-title { font-weight: 600; color: var(--text); }
.badge { display: inline-block; font-size: 11px; font-weight: 650; padding: 1px 8px; border-radius: 99px; background: var(--panel); border: 1px solid var(--border); margin-left: 60px; }
.badge.tone-good { background: var(--ok-soft); border-color: color-mix(in srgb, var(--ok) 25%, transparent); }
.badge.tone-warn, .badge.tone-low { background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 25%, transparent); }
.ps-why { margin: 2px 0 0 60px; padding-left: 16px; color: var(--text-2); font-size: 12.5px; line-height: 1.45; }
.ps-why li + li { margin-top: 2px; }
.plan-steps { margin-top: 6px; border-top: 1px solid var(--border); padding-top: 8px; font-size: 12.5px; color: var(--text-2); }
.plan-steps summary { cursor: pointer; color: var(--muted); font-weight: 600; font-size: 12px; }
.plan-steps ol { margin: 6px 0 0; padding-left: 20px; }
.plan-foot { margin: 8px 0 0; font-size: 11.5px; color: var(--muted); }
.plan-warn, .plan-err {
  display: flex;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 10px;
  font-size: 12.5px;
}
.plan-warn { background: var(--warn-soft); color: var(--warn); }
.plan-err { background: var(--err-soft); color: var(--err); }
.plan-warn svg.i, .plan-err svg.i { width: 16px; height: 16px; margin-top: 1px; flex: none; }
@media (max-width: 420px) {
  .badge, .ps-why { margin-left: 0; }
  .plan-stats { grid-template-columns: 1fr 1fr; }
}

/* ------------------------------------------------------------------ advanced */
.advanced { margin-top: 14px; border: 1px solid var(--border); border-radius: 12px; background: var(--panel); }
.advanced > summary {
  list-style: none;
  cursor: pointer;
  padding: 11px 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  border-radius: 12px;
}
.advanced > summary::-webkit-details-marker { display: none; }
.advanced > summary::after { content: ""; margin-left: auto; width: 8px; height: 8px; border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: rotate(45deg); transition: transform .15s; margin-right: 4px; }
.advanced[open] > summary::after { transform: rotate(-135deg); }
.advanced > summary:hover { background: var(--panel-2); }
.adv-badge { font-size: 11px; padding: 1px 7px; border-radius: 99px; background: var(--accent-soft); color: var(--accent-text); font-weight: 600; }
.tabs { display: flex; gap: 2px; padding: 0 10px; border-bottom: 1px solid var(--border); overflow-x: auto; }
.tabs button {
  padding: 8px 10px;
  border: none;
  background: none;
  color: var(--muted);
  font-weight: 580;
  font-size: 13px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  white-space: nowrap;
}
.tabs button[aria-selected="true"] { color: var(--accent-text); border-bottom-color: var(--accent); }
.tab-body { padding: 14px; display: flex; flex-direction: column; gap: 12px; }
.adv-foot { padding: 0 14px 12px; display: flex; justify-content: flex-end; }

.field { display: flex; flex-direction: column; gap: 5px; font-size: 13px; }
.field > span:first-child, .field > .f-label { font-weight: 560; color: var(--text-2); font-size: 12.5px; display: flex; justify-content: space-between; gap: 8px; }
.field .f-value { color: var(--accent-text); font-family: var(--mono); font-weight: 600; }
.field.inline { flex-direction: row; align-items: center; justify-content: space-between; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.field-hint { color: var(--muted); font-size: 12px; }
select, input[type="text"], input[type="number"], input[type="search"], textarea {
  width: 100%;
  padding: 7px 10px;
  border-radius: 9px;
  border: 1px solid var(--border-strong);
  background: var(--panel);
  color: var(--text);
  min-width: 0;
}
select:focus, input:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
select:disabled, input:disabled { opacity: .55; }
textarea { font-family: var(--mono); font-size: 12.5px; resize: vertical; min-height: 70px; }
input[type="range"] { width: 100%; accent-color: var(--accent); }
.with-unit { display: flex; align-items: center; gap: 6px; }
.with-unit input { width: 110px; }
.check { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; color: var(--text-2); cursor: pointer; }
.check input { margin: 2px 0 0; accent-color: var(--accent); width: 16px; height: 16px; flex: none; }
.range-ends { display: flex; justify-content: space-between; color: var(--muted); font-size: 11.5px; }
.sub-head { font-size: 12px; font-weight: 650; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; padding-top: 4px; }

.cmd {
  margin: 0;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 260px;
  overflow: auto;
  color: var(--text-2);
}

.convert-bar { display: flex; gap: 8px; }
/* Keeps the Convert button visible while the options panel scrolls. */
.convert-dock {
  position: sticky;
  bottom: -18px;
  margin: 16px -18px -18px;
  padding: 12px 18px 14px;
  background: var(--panel);
  border-top: 1px solid var(--border);
  border-radius: 0 0 var(--radius) var(--radius);
  z-index: 2;
}
.convert-dock .hint { margin-top: 6px; }
@media (max-width: 1000px) {
  /* The page scrolls instead of the panel: stick to the bottom of the screen. */
  .convert-dock { bottom: 0; border-radius: 0; box-shadow: 0 -6px 16px rgba(0, 0, 0, .06); }
  .toasts { bottom: 110px; }
}
@media (max-width: 640px) {
  .convert-dock { margin: 14px -14px -14px; padding: 10px 14px 12px; }
}

/* ------------------------------------------------------------------ dialogs */
.dialog {
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 0;
  background: var(--panel);
  color: var(--text);
  box-shadow: var(--shadow-lg);
  width: min(560px, calc(100vw - 24px));
  max-height: calc(100vh - 40px);
}
.dialog.wide { width: min(980px, calc(100vw - 24px)); }
.dialog::backdrop { background: rgba(10, 12, 18, .5); backdrop-filter: blur(3px); }
.dialog[open] { display: flex; flex-direction: column; }
.dialog-head { display: flex; align-items: center; padding: 16px 18px 12px; gap: 10px; }
.dialog-head h2 { font-size: 17px; }
.dialog-head .close { margin-left: auto; }
.dialog-body { padding: 0 18px 18px; overflow: auto; }

.format-dialog { height: min(760px, calc(100vh - 40px)); }
.fp-body { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 0; min-height: 0; flex: 1; border-top: 1px solid var(--border); }
.fp-filters { padding: 14px 16px 18px 18px; border-right: 1px solid var(--border); display: flex; flex-direction: column; gap: 14px; overflow: auto; }
.fp-filters input[type="search"] { padding: 9px 12px; border-radius: 10px; }
.fp-group { display: flex; flex-direction: column; gap: 6px; }
.fp-label { font-size: 11px; font-weight: 650; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.fp-types { display: flex; flex-wrap: wrap; gap: 5px; }
.fp-features { display: flex; flex-direction: column; gap: 5px; }
.fp-features .check { font-size: 12.5px; }
.fp-filters #fpReset { align-self: flex-start; }
.fp-uses { margin-top: auto; font-size: 12px; color: var(--muted); line-height: 1.7; }
.linkish { border: none; background: none; padding: 0; font: inherit; color: var(--text-2); cursor: pointer; text-decoration: underline; text-decoration-color: var(--border-strong); text-underline-offset: 2px; }
.linkish:hover, .linkish[aria-pressed="true"] { color: var(--accent-text); text-decoration-color: currentColor; }
.fp-results { display: flex; flex-direction: column; min-height: 0; min-width: 0; }
.fp-count { padding: 12px 18px 4px; font-size: 12.5px; color: var(--muted); }
.fp-count b { color: var(--text-2); }
.format-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  align-content: start;
  gap: 10px;
  padding: 8px 18px 20px;
  overflow: auto;
  flex: 1;
}
.fmt-tile {
  display: flex;
  flex-direction: column;
  gap: 5px;
  text-align: left;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  cursor: pointer;
  min-width: 0;
}
.fmt-tile:hover { border-color: var(--accent); background: var(--panel); }
.fmt-tile[aria-current="true"] { border-color: var(--accent); background: var(--accent-soft); }
.fmt-tile .t-head { display: flex; align-items: baseline; gap: 8px; min-width: 0; }
.fmt-tile .t-name { font-weight: 650; }
.fmt-tile .t-ext { font-family: var(--mono); font-size: 11.5px; color: var(--muted); }
.fmt-tile .t-kind { margin-left: auto; font-size: 10.5px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); flex: none; }
.fmt-tile .t-row { font-size: 12px; color: var(--text-2); display: grid; grid-template-columns: 44px 1fr; gap: 6px; }
.fmt-tile .t-row > span { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .04em; font-weight: 650; padding-top: 1px; }
.fmt-tile .t-badges { display: flex; flex-wrap: wrap; gap: 4px; }
.fmt-tile .t-badges span { font-size: 10.5px; padding: 0 6px; line-height: 17px; border-radius: 5px; border: 1px solid var(--border); background: var(--panel); color: var(--text-2); }
.fmt-tile .t-desc { color: var(--muted); font-size: 11.5px; line-height: 1.4; }
.fmt-tile .t-with { color: var(--accent-text); font-size: 12px; font-weight: 600; display: flex; align-items: center; gap: 4px; }
.fmt-tile .t-with svg.i { width: 14px; height: 14px; }
.format-empty { padding: 30px; text-align: center; color: var(--muted); grid-column: 1 / -1; }
@media (max-width: 760px) {
  .format-dialog { height: calc(100vh - 24px); }
  .fp-body { grid-template-columns: 1fr; grid-template-rows: auto minmax(0, 1fr); }
  .fp-filters { border-right: none; border-bottom: 1px solid var(--border); padding: 12px 16px; gap: 10px; max-height: 42vh; }
  .fp-features { flex-direction: row; flex-wrap: wrap; gap: 4px 12px; }
  .fp-uses { margin-top: 0; }
}

.preview-body video, .preview-body audio { width: 100%; max-height: 70vh; border-radius: 12px; background: #000; }
.preview-body audio { background: transparent; }
.preview-body .preview-note { margin-top: 10px; color: var(--muted); font-size: 12.5px; }

.info-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-bottom: 14px; }
.info-table th, .info-table td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
.info-table th { color: var(--muted); font-weight: 600; font-size: 12px; white-space: nowrap; }
.info-section { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 650; margin: 14px 0 6px; }
.log {
  margin: 0;
  max-height: 46vh;
  overflow: auto;
  padding: 10px 12px;
  border-radius: 10px;
  background: #0b0d12;
  color: #c9d1e0;
  font: 11.5px/1.5 var(--mono);
  white-space: pre-wrap;
  word-break: break-all;
}

.settings-group { padding: 14px 0; border-top: 1px solid var(--border); display: flex; flex-direction: column; gap: 10px; }
.settings-group:first-child { border-top: none; padding-top: 0; }
.settings-group h3 { font-size: 13.5px; }
.cap-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 4px 12px; font-size: 12.5px; }
.cap-grid span::before { content: "● "; color: var(--ok); }
.cap-grid span.no::before { color: var(--err); }
.cap-grid span.no { color: var(--muted); }

/* ------------------------------------------------------------------ toasts */
.toasts { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; gap: 8px; z-index: 200; align-items: center; pointer-events: none; }
.toast {
  pointer-events: auto;
  padding: 10px 16px;
  border-radius: 12px;
  background: var(--text);
  color: var(--panel);
  box-shadow: var(--shadow-lg);
  font-size: 13.5px;
  max-width: min(560px, calc(100vw - 32px));
  animation: toast-in .2s ease;
}
.toast.error { background: var(--err); color: #fff; }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } }

/* ------------------------------------------------------------------ footer */
.footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 14px 24px 22px;
  color: var(--muted);
  font-size: 12.5px;
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
}

/* ------------------------------------------------------------------ responsive */
@media (max-width: 1000px) {
  .layout { grid-template-columns: 1fr; }
  .settings-panel { position: static; max-height: none; overflow: visible; }
}
@media (max-width: 640px) {
  .topbar { padding: 10px 16px; gap: 10px; }
  .tagline { display: none; }
  .engine-chip { max-width: 40vw; }
  .layout { padding: 12px 16px; gap: 12px; }
  .panel { padding: 14px; }
  .file { grid-template-columns: auto 56px minmax(0, 1fr) auto; gap: 10px; padding: 10px; }
  .thumb { width: 56px; height: 42px; }
  .file > .check { padding-top: 12px; }
  .file-actions { flex-direction: column; }
  .segmented { grid-template-columns: repeat(2, 1fr); }
  .field-row { grid-template-columns: 1fr; }
  .footer { padding: 12px 16px 18px; }
}
@media (max-width: 420px) {
  .output { flex-wrap: wrap; }
  .output .o-text { flex-basis: calc(100% - 40px); }
  .output .o-actions { margin-left: auto; }
}