:root {
  --bg: #f6f6f4;
  --surface: #ffffff;
  --fg: #1c1c1e;
  --muted: #67676e;
  --line: #e2e2de;
  --line-strong: #c9c9c3;
  --accent: #1f5fbf;
  --accent-fg: #ffffff;
  --accent-soft: #e6eefb;
  --ok: #1b7a3a;
  --warn: #9a5b00;
  --warn-soft: #fff3df;
  --bad: #b3261e;
  --bad-soft: #fde9e7;
  --anchor: #6b3fb8;
  --anchor-soft: #f0eafb;
  --radius: 8px;
  --mono: ui-monospace, "Cascadia Mono", Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #141416; --surface: #1d1d20; --fg: #ececee; --muted: #9c9ca5; --line: #2e2e33; --line-strong: #44444b;
    --accent: #6ea3ff; --accent-fg: #0d1626; --accent-soft: #1d2a42; --ok: #5cc97f; --warn: #e3a64a; --warn-soft: #33270f;
    --bad: #ff7a70; --bad-soft: #3a1c1a; --anchor: #b593ff; --anchor-soft: #2a2140;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #141416; --surface: #1d1d20; --fg: #ececee; --muted: #9c9ca5; --line: #2e2e33; --line-strong: #44444b;
  --accent: #6ea3ff; --accent-fg: #0d1626; --accent-soft: #1d2a42; --ok: #5cc97f; --warn: #e3a64a; --warn-soft: #33270f;
  --bad: #ff7a70; --bad-soft: #3a1c1a; --anchor: #b593ff; --anchor-soft: #2a2140;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
main, .top, .foot { max-width: 1180px; margin: 0 auto; padding: 0 16px; }
h1, h2, h3 { margin: 0; line-height: 1.2; }
h1 { font-size: 20px; }
h2 { font-size: 17px; }
code { font-family: var(--mono); font-size: 0.92em; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
[hidden] { display: none !important; }

/* header */
.top { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 16px; padding-top: 20px; padding-bottom: 12px; }
.brand { display: flex; align-items: center; gap: 8px; }
.logo { width: 30px; height: 30px; flex: none; }
.tagline { margin: 0; color: var(--muted); flex: 1 1 280px; }
.env { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { font-size: 12px; padding: 2px 8px; border-radius: 99px; border: 1px solid var(--line-strong); color: var(--muted); white-space: nowrap; }
.chip.ok { color: var(--ok); border-color: currentColor; }
.chip.warn { color: var(--warn); border-color: currentColor; }

/* steps */
.step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin: 12px 0; }
.step-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.num { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-weight: 600; font-size: 13px; }
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; }

/* buttons */
button { font: inherit; border-radius: 6px; border: 1px solid var(--line-strong); background: var(--surface); color: var(--fg); padding: 6px 14px; cursor: pointer; }
button:hover:not(:disabled) { border-color: var(--accent); }
button:focus-visible, .drop:focus-visible, input:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); font-weight: 600; }
button.secondary { font-size: 14px; padding: 4px 10px; }
button.link { border: 0; background: none; padding: 0; color: var(--accent); text-decoration: underline; }
button.icon { padding: 2px 8px; font-size: 13px; }
button:disabled { opacity: 0.5; cursor: not-allowed; }

/* drop zone */
.drop { border: 2px dashed var(--line-strong); border-radius: var(--radius); padding: 22px 16px; text-align: center; transition: border-color .15s, background .15s; }
.drop p { margin: 4px 0; }
.drop.over { border-color: var(--accent); background: var(--accent-soft); }

/* deck list */
.decks { list-style: none; margin: 12px 0 0; padding: 0; display: grid; gap: 6px; }
.deck { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 4px 12px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; }
.deck .name { font-weight: 500; overflow-wrap: anywhere; }
.deck .meta { color: var(--muted); font-size: 13px; white-space: nowrap; }
.deck .bar { grid-column: 1 / -1; height: 4px; background: var(--line); border-radius: 2px; overflow: hidden; }
.deck .bar > span { display: block; height: 100%; background: var(--accent); width: 0; transition: width .2s; }
.deck.error .meta { color: var(--bad); }

/* options */
.options { margin-bottom: 12px; }
.options summary { cursor: pointer; color: var(--accent); }
.opts { display: grid; gap: 8px; padding: 10px 0 4px; }
.opts input[type=number] { width: 4.5em; font: inherit; padding: 2px 4px; border: 1px solid var(--line-strong); border-radius: 4px; background: var(--surface); color: var(--fg); }

/* summary metrics */
.summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px; margin-bottom: 12px; }
.metric { border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; }
.metric .k { font-size: 12px; color: var(--muted); }
.metric .v { font-size: 18px; font-weight: 600; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.metric .s { font-size: 12px; color: var(--muted); overflow-wrap: anywhere; }

/* clip table */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 6px; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { padding: 6px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
thead th { position: sticky; top: 0; background: var(--surface); font-weight: 600; font-size: 13px; color: var(--muted); white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
td.c-n, th.c-n { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
td.c-id, th.c-id { text-align: right; color: var(--muted); font-variant-numeric: tabular-nums; }
td.c-skip, th.c-skip { text-align: center; width: 1%; }
td.deck-name { max-width: 260px; overflow-wrap: anywhere; }
td.clip-name { max-width: 280px; overflow-wrap: anywhere; }
tr.inactive td:not(.c-skip) { color: var(--muted); }
tr.anchor td { background: var(--anchor-soft); }
.empty { padding: 16px; margin: 0; }
.badge { display: inline-block; font-size: 12px; padding: 0 6px; border-radius: 4px; margin: 1px 4px 1px 0; white-space: nowrap; border: 1px solid transparent; }
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.bad { background: var(--bad-soft); color: var(--bad); }
.badge.anchor { background: var(--anchor-soft); color: var(--anchor); font-weight: 600; }
.badge.info { border-color: var(--line-strong); color: var(--muted); }
.arrow { color: var(--muted); }
th .unit { font-weight: 400; font-size: 11px; }
td.c-play, th.c-play { width: 1%; padding-left: 0; padding-right: 0; text-align: center; }
button.play { width: 28px; height: 24px; padding: 0; font-size: 11px; line-height: 1; border-radius: 12px; color: var(--accent); }
button.play.on { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* write */
.written { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 4px; font-size: 14px; }
.written li { overflow-wrap: anywhere; }
.written .ok { color: var(--ok); }
.written .bad { color: var(--bad); }
.written .skip { color: var(--muted); }

.notice { border-radius: 6px; padding: 10px 12px; margin: 12px 0; }
.notice.bad { background: var(--bad-soft); color: var(--bad); }

dialog { border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--surface); color: var(--fg); max-width: min(560px, calc(100vw - 32px)); padding: 18px; }
dialog::backdrop { background: rgb(0 0 0 / 0.35); }
dialog menu { display: flex; justify-content: flex-end; gap: 8px; padding: 0; margin: 16px 0 0; }
dialog ul { padding-left: 20px; max-height: 40vh; overflow: auto; }

.foot { padding-top: 8px; padding-bottom: 24px; }

@media (max-width: 640px) {
  .deck { grid-template-columns: 1fr auto; }
  .deck .meta { grid-column: 1; }
}