:root {
  --bg: #f6f7f9; --card: #ffffff; --text: #16181d; --muted: #5d6573; --line: #dde1e7;
  --accent: #1f6feb; --accent-text: #ffffff; --ok: #12805c; --bad: #d92d20; --warn: #b54708;
  --chip: #eef1f5; --hl: #fff1c2; --hl-text: #5c3b00;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1115; --card: #181b21; --text: #eceef2; --muted: #9aa3b2; --line: #2a2f38;
    --accent: #4c8dff; --accent-text: #0b0d10; --ok: #3ccf91; --bad: #ff6b5e; --warn: #f5a524;
    --chip: #232832; --hl: #4a3b10; --hl-text: #ffe8a3;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
[hidden] { display: none !important; }
header { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding: 10px 16px; border-bottom: 1px solid var(--line); background: var(--card); position: sticky; top: 0; z-index: 2; }
.brand { font-size: 1.05rem; }
nav { display: flex; gap: 4px; flex-wrap: wrap; }
.tab { border: 0; background: transparent; color: var(--muted); font: inherit; padding: 6px 10px; border-radius: 8px; cursor: pointer; }
.tab.active { background: var(--chip); color: var(--text); font-weight: 600; }
main { max-width: 860px; margin: 0 auto; padding: 16px 16px 64px; }
.screen { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px; margin: 12px 0; }
.narrow { max-width: 420px; width: 100%; }
h1 { font-size: 1.35rem; margin: 0 0 4px; } h2 { font-size: 1.1rem; margin: 0 0 10px; }
.muted { color: var(--muted); font-size: .9rem; }
label { display: block; margin: 10px 0; font-size: .9rem; color: var(--muted); }
input, select { font: inherit; color: var(--text); background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 9px 11px; width: 100%; margin-top: 4px; }
select { width: auto; }
.row { display: flex; gap: 8px; flex-wrap: wrap; } .row input { flex: 1 1 160px; width: auto; margin: 0; } .row select { margin: 0; }
.btn { border: 1px solid var(--line); background: var(--card); color: var(--text); border-radius: 10px; padding: 9px 14px; font: inherit; font-weight: 600; cursor: pointer; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.ok { background: var(--ok); border-color: var(--ok); color: #fff; }
.btn.bad { color: var(--bad); }
.btn.small { padding: 4px 9px; font-size: .85rem; font-weight: 500; }
.btn:disabled { opacity: .5; cursor: default; }
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.toolbar label { margin: 0; }
.meta { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 8px; }
.chip { background: var(--chip); border-radius: 99px; padding: 2px 10px; font-size: .8rem; color: var(--muted); }
audio { width: 100%; margin: 6px 0; }
.speeds { display: flex; gap: 6px; align-items: center; }
.speeds .btn.on { background: var(--chip); }
#label { font-size: 1.2rem; padding: 12px 14px; margin: 10px 0 4px; }
#label.changed { border-color: var(--accent); }
.alts { margin: 10px 0; display: grid; gap: 6px; }
.alt { display: grid; grid-template-columns: 88px 1fr auto; gap: 8px; align-items: baseline; padding: 6px 8px; border-radius: 8px; background: var(--chip); }
.alt .who { font-size: .8rem; color: var(--muted); }
.alt mark { background: var(--hl); color: var(--hl-text); border-radius: 3px; padding: 0 2px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; align-items: center; }
.reasons { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.status { font-size: .9rem; min-height: 1.3em; margin-top: 6px; }
.err { color: var(--bad); } .okc { color: var(--ok); } .warn { color: var(--warn); }
kbd { font: .75rem ui-monospace, Menlo, monospace; border: 1px solid var(--line); border-radius: 4px; padding: 0 5px; color: var(--muted); }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.tablewrap { overflow-x: auto; }
.bar { height: 6px; background: var(--chip); border-radius: 99px; overflow: hidden; min-width: 60px; }
.bar div { height: 100%; background: var(--ok); }
.guide ul { margin: 8px 0; padding-left: 20px; } .guide li { margin: 4px 0; }
.guide summary { cursor: pointer; font-weight: 600; }
.hist { padding: 8px 0; border-bottom: 1px solid var(--line); cursor: pointer; }
.hist:hover { background: var(--chip); }
.secret { font: 1rem ui-monospace, Menlo, monospace; background: var(--chip); padding: 6px 10px; border-radius: 8px; user-select: all; }
hr { border: 0; border-top: 1px solid var(--line); margin: 16px 0; }
@media (max-width: 560px) { .alt { grid-template-columns: 1fr; } header { gap: 8px; } }