:root {
  --bg: #f6f7f9; --surface: #ffffff; --surface-2: #f0f2f5; --text: #1b1f24; --muted: #5f6b7a; --border: #e1e5ea;
  --accent: #2557d6; --accent-ink: #ffffff; --good: #1a7f4b; --good-bg: #e3f5ea; --warn: #9a5b00; --warn-bg: #fff3d6;
  --bad: #b42318; --bad-bg: #fde7e5; --info: #2557d6; --info-bg: #e6edfc;
  --typed: #3b74e8; --pasted: #e5484d; --deleted: #a3acb9;
  --radius: 10px; --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216; --surface: #171b21; --surface-2: #1f242c; --text: #e7eaee; --muted: #9aa5b4; --border: #2a313b;
    --accent: #6b95ff; --accent-ink: #0b1020; --good: #4cc38a; --good-bg: #13301f; --warn: #f1b54a; --warn-bg: #33270e;
    --bad: #ff7b72; --bad-bg: #3a1714; --info: #8fb0ff; --info-bg: #182340;
    --typed: #6b95ff; --pasted: #ff6b6f; --deleted: #5b6573; --shadow: none;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.6rem; margin: 0 0 .25rem; letter-spacing: -.01em; }
h2 { font-size: 1.1rem; margin: 0 0 .75rem; }
h3 { font-size: 1rem; margin: 1rem 0 .5rem; }
code { background: var(--surface-2); padding: .1em .35em; border-radius: 4px; font-size: .9em; word-break: break-all; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.good { color: var(--good); } .bad { color: var(--bad); } .warn { color: var(--warn); }

.topbar { display: flex; align-items: center; gap: 1.5rem; padding: .7rem 1.25rem; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5; }
.brand { display: flex; align-items: center; gap: .5rem; font-weight: 700; color: var(--text); font-size: 1.05rem; }
.brand:hover { text-decoration: none; }
.topbar nav { display: flex; gap: 1rem; }
.topbar nav a { color: var(--muted); font-weight: 500; }
.me { margin-left: auto; display: flex; align-items: center; gap: .6rem; font-size: .9rem; }
.me form { margin: 0; }
.avatar { width: 28px; height: 28px; border-radius: 50%; }
.container { max-width: 1180px; margin: 0 auto; padding: 1.5rem 1.25rem 3rem; }
.foot { text-align: center; padding: 1rem 1rem 2rem; font-size: .8rem; }

.page-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; margin-bottom: 1.25rem; flex-wrap: wrap; }
.page-head p { margin: 0; }
.actions { display: flex; gap: .5rem; flex-wrap: wrap; }
.actions form { margin: 0; }
.crumbs { margin: 0 0 .4rem; font-size: .85rem; color: var(--muted); }

.btn { display: inline-flex; align-items: center; gap: .4rem; padding: .5rem .9rem; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--text); font: inherit; font-weight: 500; cursor: pointer; }
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.big { padding: .75rem 1.4rem; font-size: 1.05rem; }
.btn[disabled] { opacity: .55; cursor: default; }
button.link { background: none; border: 0; color: var(--accent); cursor: pointer; font: inherit; padding: 0; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.25rem; margin-bottom: 1rem; box-shadow: var(--shadow); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1rem; }
.card.course { color: var(--text); transition: border-color .15s; }
.card.course:hover { border-color: var(--accent); text-decoration: none; }
.card.course h3 { margin: 0 0 .25rem; }
.card.course p { margin: 0; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.two-col > .card { margin-bottom: 1rem; }
.empty { text-align: center; padding: 2.5rem; }

.hero { max-width: 560px; margin: 4rem auto; text-align: center; }
.hero h1 { font-size: 2.2rem; margin-top: .5rem; }
.lead { font-size: 1.1rem; color: var(--muted); }

.alert { padding: .7rem 1rem; border-radius: 8px; margin: 0 0 1rem; }
.alert.error { background: var(--bad-bg); color: var(--bad); }
.alert.warn { background: var(--warn-bg); color: var(--warn); }
.alert.info { background: var(--info-bg); color: var(--info); }

.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: .5rem .55rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.table th { font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; }
.table tbody tr:hover { background: var(--surface-2); }
.table .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.table.sortable th { cursor: pointer; user-select: none; }
.state { text-transform: capitalize; font-size: .85rem; }

.pill { display: inline-block; padding: .05rem .5rem; border-radius: 999px; font-size: .75rem; font-weight: 600; background: var(--surface-2); color: var(--muted); margin-right: .2rem; }
.pill.good { background: var(--good-bg); color: var(--good); }
.pill.warn { background: var(--warn-bg); color: var(--warn); }
.pill.bad { background: var(--bad-bg); color: var(--bad); }

.score { display: inline-block; min-width: 2.2rem; text-align: center; padding: .1rem .45rem; border-radius: 6px; font-weight: 700; font-variant-numeric: tabular-nums; margin-right: .35rem; }
.score.low { background: var(--good-bg); color: var(--good); }
.score.medium { background: var(--warn-bg); color: var(--warn); }
.score.high { background: var(--bad-bg); color: var(--bad); }

.verdict { display: flex; align-items: center; gap: 1.25rem; border-left: 5px solid var(--good); }
.verdict.medium { border-left-color: var(--warn); }
.verdict.high { border-left-color: var(--bad); }
.verdict h2 { margin: 0 0 .2rem; font-size: 1.3rem; }
.verdict p { margin: 0; }
.score-big { font-size: 2.6rem; font-weight: 800; min-width: 5rem; text-align: center; border-radius: 12px; padding: .3rem .6rem; font-variant-numeric: tabular-nums; }
.score-big.low { background: var(--good-bg); color: var(--good); }
.score-big.medium { background: var(--warn-bg); color: var(--warn); }
.score-big.high { background: var(--bad-bg); color: var(--bad); }

.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: .75rem; margin-bottom: 1rem; }
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: .8rem 1rem; display: flex; flex-direction: column; box-shadow: var(--shadow); }
.kpi span { font-size: .78rem; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.kpi strong { font-size: 1.45rem; font-variant-numeric: tabular-nums; }
.kpi small { color: var(--muted); }

.flags { list-style: none; margin: 0; padding: 0; }
.flag { display: flex; gap: .8rem; align-items: flex-start; padding: .7rem 0; border-bottom: 1px solid var(--border); }
.flag:last-child { border-bottom: 0; }
.flag p { margin: .15rem 0 0; color: var(--muted); font-size: .92rem; }
.flag .sev { flex: none; width: 4.6rem; text-align: center; font-size: .7rem; font-weight: 700; text-transform: uppercase; padding: .15rem 0; border-radius: 5px; margin-top: .15rem; }
.flag.high .sev { background: var(--bad-bg); color: var(--bad); }
.flag.medium .sev { background: var(--warn-bg); color: var(--warn); }
.flag.low .sev { background: var(--surface-2); color: var(--muted); }
.flag.info .sev { background: var(--info-bg); color: var(--info); }
.flag .pts { margin-left: auto; color: var(--muted); font-variant-numeric: tabular-nums; font-size: .85rem; }

.stats { display: grid; grid-template-columns: 1fr 1fr; gap: .1rem 1.25rem; margin: 0; }
.stats div { display: flex; justify-content: space-between; gap: .5rem; padding: .35rem 0; border-bottom: 1px dashed var(--border); }
.stats dt { color: var(--muted); font-size: .9rem; }
.stats dd { margin: 0; font-weight: 600; font-variant-numeric: tabular-nums; text-align: right; }
abbr { cursor: help; text-decoration: none; }

.chart-box { position: relative; height: 280px; }
.chart-box.short { height: 200px; }

.pastes { list-style: none; margin: 0; padding: 0; }
.pastes li { padding: .6rem 0; border-bottom: 1px solid var(--border); }
.pastes li.external { border-left: 3px solid var(--pasted); padding-left: .7rem; }
.pastes li.internal { border-left: 3px solid var(--border); padding-left: .7rem; }
.paste-meta { font-size: .9rem; }
details summary { cursor: pointer; color: var(--accent); font-size: .85rem; margin-top: .3rem; }
blockquote { margin: .5rem 0 0; padding: .6rem .8rem; background: var(--surface-2); border-radius: 6px; white-space: pre-wrap; font-size: .9rem; max-height: 300px; overflow: auto; }

ul.plain { list-style: none; padding: 0; margin: 0; }
ul.plain li { padding: .25rem 0; }
.scroll { max-height: 280px; overflow: auto; }
.inline-form { display: flex; gap: .5rem; }
input[type=text] { flex: 1; padding: .5rem .7rem; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text); font: inherit; }

.live-list { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: .5rem; }
.live-list li a { display: inline-block; padding: .35rem .7rem; background: var(--surface-2); border-radius: 999px; font-size: .9rem; }
.pulse { display: inline-block; width: 9px; height: 9px; border-radius: 50%; background: var(--good); margin-right: .3rem; animation: pulse 1.6s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(26, 127, 75, .5); } 70% { box-shadow: 0 0 0 8px rgba(26, 127, 75, 0); } 100% { box-shadow: 0 0 0 0 rgba(26, 127, 75, 0); } }
.spinner { display: inline-block; width: 12px; height: 12px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; vertical-align: -1px; }
@keyframes spin { to { transform: rotate(360deg); } }

pre.secret { background: var(--surface-2); padding: .8rem 1rem; border-radius: 8px; overflow-x: auto; font-size: .85rem; user-select: all; }
.prose { max-width: 760px; margin: 0 auto; }
.prose h2 { margin-top: 1.5rem; }

@media (max-width: 800px) {
  .two-col { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .me .muted { display: none; }
  .table { display: block; overflow-x: auto; }
  .verdict { flex-direction: column; align-items: flex-start; }
}