:root {
  --bg: #0a0e13;
  --panel: #111821;
  --panel-2: #0d131b;
  --border: #243142;
  --text: #dbe4ee;
  --muted: #93a3b8;
  --accent: #4fd1c5;
  --accent-ink: #062320;
  --focus: #ffd166;
  --good: #3fb950;
  --bad: #ff6b6b;
  --sev-critical: #ff5c7a;
  --sev-high: #ff9f43;
  --sev-medium: #f6c945;
  --sev-low: #6cb6ff;
  --mono: ui-monospace, "Cascadia Mono", "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius: 8px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 var(--sans);
}
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5rem; }
h2 { font-size: 1.1rem; }
h3 { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-top: 1.25rem; }
p { margin: 0 0 .75rem; }
code, pre { font-family: var(--mono); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}
main:focus, [tabindex="-1"]:focus { outline: none; }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip { position: absolute; left: -999px; top: 0; background: var(--focus); color: #000; padding: .5rem 1rem; z-index: 10; }
.skip:focus { left: 0; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.block { display: block; }

/* ---------- chrome ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: .5rem;
  padding: .6rem 1rem; border-bottom: 1px solid var(--border); background: var(--panel-2);
  position: sticky; top: 0; z-index: 5;
}
.brand { font-weight: 800; letter-spacing: -.01em; font-size: 1.15rem; color: var(--text); text-decoration: none; white-space: nowrap; }
.brand span { color: var(--accent); }
nav { display: flex; gap: .1rem; align-items: center; }
.icon-btn { justify-content: center; align-items: center; line-height: 1; width: 36px; font-weight: 700; border: 1px solid var(--border) !important; border-radius: 50% !important; min-height: 36px !important; height: 36px; padding: 0 !important; margin-left: .25rem; }
nav a, nav button {
  font: inherit; font-size: .875rem; color: var(--muted); background: none; border: 0;
  padding: .4rem .5rem; border-radius: 6px; cursor: pointer; text-decoration: none; min-height: 44px; display: inline-flex; align-items: center;
}
nav a:hover, nav button:hover { color: var(--text); }
nav a[aria-current="page"] { color: var(--accent); }


main { max-width: 760px; margin: 0 auto; padding: 1rem 1rem 3rem; }

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; margin-bottom: 1rem; }
.panel.error { border-color: var(--bad); }
.notice { border-left: 4px solid var(--accent); }

/* ---------- buttons ---------- */
.btn {
  font: inherit; color: var(--text); background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 6px; padding: .65rem .9rem; min-height: 44px; cursor: pointer; text-align: left;
}
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 700; text-align: center; }
.btn.primary:disabled { background: var(--panel-2); color: var(--muted); border-color: var(--border); }

/* ---------- case ---------- */
.case-meta { font-size: .8rem; color: var(--muted); }

.alert-card {
  --sev: var(--sev-medium);
  background: var(--panel); border: 1px solid var(--border); border-left: 5px solid var(--sev);
  border-radius: var(--radius); padding: .9rem 1rem; margin-bottom: 1.25rem;
}
.alert-card.sev-critical { --sev: var(--sev-critical); }
.alert-card.sev-high { --sev: var(--sev-high); }
.alert-card.sev-medium { --sev: var(--sev-medium); }
.alert-card.sev-low { --sev: var(--sev-low); }
.alert-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: .35rem; }
.sev {
  font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em;
  color: #0a0e13; background: var(--sev); padding: .1rem .5rem; border-radius: 4px;
}
.rule { font-size: 1.25rem; font-weight: 700; word-break: break-word; }
.alert-fields { display: grid; grid-template-columns: auto 1fr; gap: .2rem .9rem; margin: .5rem 0 0; font-size: .875rem; }
.alert-fields dt { color: var(--muted); }
.alert-fields dd { margin: 0; font-family: var(--mono); word-break: break-all; }

.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
.pulls { font-size: .875rem; font-weight: 600; font-variant-numeric: tabular-nums; color: var(--accent); margin: 0; }
.pulls.zero { color: var(--sev-high); }

.ev-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .5rem; margin: .5rem 0 1rem; }
@media (min-width: 640px) { .ev-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.ev-btn {
  font: inherit; font-size: .875rem; color: var(--text); background: var(--panel);
  border: 1px solid var(--border); border-radius: 6px; padding: .6rem .6rem; min-height: 52px;
  display: flex; justify-content: space-between; align-items: center; gap: .4rem; text-align: left; cursor: pointer;
}
.ev-btn:hover:not(:disabled) { border-color: var(--accent); background: #142130; }
.ev-btn:disabled { cursor: not-allowed; color: var(--muted); }
.ev-btn.used { border-color: var(--accent); color: var(--text); background: #0f2a2a; }
.ev-btn .tag { font-size: .75rem; font-weight: 600; color: var(--accent); }

.ev-panel { margin-bottom: .9rem; }
.ev-panel h3 { margin: 0 0 .3rem; color: var(--accent); }
.ev-panel pre, .share-preview {
  margin: 0; padding: .75rem; background: #05080b; border: 1px solid var(--border); border-radius: 6px;
  font-size: .75rem; line-height: 1.5; color: #c9f2d6; overflow-x: auto; white-space: pre; tab-size: 4;
}
@media (min-width: 640px) { .ev-panel pre { font-size: .8125rem; } }

.verdict h2 { margin-bottom: .25rem; }
.verdicts { display: grid; gap: .5rem; margin: .5rem 0 .75rem; }
@media (min-width: 640px) { .verdicts { grid-template-columns: repeat(3, 1fr); } }
.verdict-btn { display: flex; flex-direction: column; gap: .1rem; }
.verdict-btn b { font-size: 1.05rem; }
.verdict-btn span { font-size: .8rem; color: var(--muted); }
.verdict-btn[aria-pressed="true"] { border-color: var(--accent); background: #0f2a2a; box-shadow: inset 0 0 0 1px var(--accent); }
.submit { width: 100%; }
.reasons { display: grid; gap: .5rem; margin-top: .5rem; }

/* ---------- reveal ---------- */
.reveal.win { border-color: var(--good); }
.reveal.loss { border-color: var(--bad); }
.reveal h2 { font-size: 1.25rem; }
.case-title { color: var(--accent); font-weight: 600; }
.pull-list { padding-left: 1.4rem; margin: 0 0 .5rem; }
.alt { border-left: 3px solid var(--sev-medium); padding-left: .75rem; }
.attack-id { background: #1a2433; padding: .1rem .4rem; border-radius: 4px; color: var(--sev-medium); }

table.score { width: 100%; border-collapse: collapse; font-size: .875rem; font-variant-numeric: tabular-nums; }
.score th, .score td { padding: .35rem .25rem; border-bottom: 1px solid var(--border); text-align: left; font-weight: normal; }
.score th[scope="row"] { color: var(--muted); }
.score .pts { text-align: right; }
.score tfoot th, .score tfoot td { font-weight: 700; color: var(--text); border-bottom: 0; }

.share { margin-top: 1.25rem; display: grid; gap: .5rem; }
.share-preview { color: var(--text); font-size: .9rem; white-space: pre-wrap; word-break: break-word; }
.share-status { min-height: 1.4em; margin: 0; color: var(--accent); }
.week { margin-top: 1.5rem; }
.next { margin-top: 1.25rem; }

/* ---------- stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .4rem; margin: 1.25rem 0; }
.stat { align-content: start; background: var(--panel-2); border: 1px solid var(--border); border-radius: 6px; padding: .5rem .25rem; text-align: center; display: grid; gap: .1rem; }
.stat b { font-size: 1.25rem; font-variant-numeric: tabular-nums; }
.stat span { font-size: .7rem; color: var(--muted); line-height: 1.2; }

/* ---------- archive ---------- */
.page-title { font-size: 1.4rem; }
.archive { list-style: none; padding: 0; margin: 0 0 1rem; display: grid; gap: .4rem; }
.archive-row {
  display: grid; grid-template-columns: 3rem 1fr auto; gap: .5rem; align-items: center;
  padding: .7rem .8rem; min-height: 48px; background: var(--panel); border: 1px solid var(--border); border-radius: 6px;
  color: var(--text); text-decoration: none; font-size: .9rem;
}
.archive-row:hover { border-color: var(--accent); }
.archive-row .num { color: var(--accent); font-weight: 600; font-variant-numeric: tabular-nums; }
.archive-row .status { font-size: .8rem; font-variant-numeric: tabular-nums; color: var(--muted); }
.archive-row.win .status { color: var(--good); }
.archive-row.loss .status { color: var(--bad); }
.archive-row.wip .status { color: var(--sev-medium); }

/* ---------- dialog ---------- */
dialog {
  background: var(--panel); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 0; width: min(560px, calc(100vw - 2rem)); max-height: calc(100dvh - 2rem);
}
dialog::backdrop { background: rgba(0, 0, 0, .7); }
.dialog-inner { padding: 1.25rem; }
.dialog-inner ol { padding-left: 1.2rem; }
.dialog-inner li { margin-bottom: .4rem; }
.dialog-inner .btn { width: 100%; margin-top: .5rem; }
.scoring-box { margin: 1.25rem 0; padding: .75rem 1rem; background: var(--panel-2); border: 1px solid var(--border); border-radius: var(--radius); }
.scoring-box h3 { margin-top: 0; }
table.scoring { width: 100%; border-collapse: collapse; font-size: .875rem; font-variant-numeric: tabular-nums; }
.scoring th { text-align: left; font-weight: normal; color: var(--muted); padding: .25rem 0; }
.scoring td { text-align: right; color: var(--accent); padding: .25rem 0; }
.scoring tr.wrong td { color: var(--bad); }
.scoring tr.best th, .scoring tr.best td { border-top: 1px solid var(--border); padding-top: .4rem; color: var(--text); font-weight: 700; }
.scoring-note { margin: .5rem 0 0; }

@media (prefers-reduced-motion: no-preference) {
  .ev-panel { animation: fadein .25s ease-out; }
  @keyframes fadein { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
}

/* ---------- forms & account ---------- */
.section-title { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 1.25rem 0 .5rem; }
.account { margin-top: 1.5rem; }
.account .block-btn { margin: .5rem 0 1rem; }
input[type="text"] {
  font: inherit; color: var(--text); background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 6px; padding: .55rem .7rem; min-height: 44px; width: 100%; min-width: 0;
}
input[type="text"]:focus-visible { border-color: var(--accent); }
.mono-input { font-family: var(--mono); letter-spacing: .05em; text-transform: uppercase; }
input[type="checkbox"] { width: 1.2rem; height: 1.2rem; accent-color: var(--accent); vertical-align: middle; }
label { display: inline-block; margin-bottom: .3rem; }
.check { display: flex; align-items: center; gap: .5rem; margin: 1rem 0; cursor: pointer; }
.row { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }
.row input[type="text"] { flex: 1 1 10rem; width: auto; }
.inline-form, .login-form { display: grid; gap: .3rem; margin-top: 1rem; }
.btn.danger { border-color: var(--bad); color: var(--bad); }
.block-btn { display: block; text-align: center; text-decoration: none; margin: .75rem 0; }
a.btn.primary { color: var(--accent-ink); }
.code-line { display: grid; gap: .35rem; margin: .75rem 0; }
.code-line .btn { justify-self: start; }
.code-big {
  font-family: var(--mono); font-size: 1.3rem; letter-spacing: .08em; color: var(--accent);
  background: #05080b; border: 1px solid var(--border); border-radius: 6px; padding: .5rem .75rem; word-break: break-all;
}
.copy-status { color: var(--accent); min-height: 1.2em; }
.warn { border-left: 4px solid var(--sev-high); padding: .5rem .75rem; background: #1f160c; border-radius: 4px; }
.warn-inline { color: var(--sev-medium); }
.key-screen .btn.primary { width: 100%; }
.signup { border-left: 4px solid var(--accent); }

/* ---------- friends ---------- */
.people { list-style: none; padding: 0; margin: 0; display: grid; gap: .4rem; }
.person { display: flex; flex-wrap: wrap; gap: .4rem .75rem; align-items: center; justify-content: space-between; padding: .5rem 0; border-bottom: 1px solid var(--border); }
.person:last-child { border-bottom: 0; }
.person .actions { display: flex; gap: .4rem; }
.person code { font-family: var(--mono); }
.friend-nudge { color: var(--accent); margin: -.25rem 0 .75rem; min-height: 0; }
.friend-nudge:empty { display: none; }
.friends-today { margin-top: 1.25rem; }
.friend-results { list-style: none; padding: 0; margin: 0; display: grid; gap: .35rem; }
.fr {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: .1rem .75rem; align-items: center;
  padding: .5rem .75rem; background: var(--panel-2); border: 1px solid var(--border); border-radius: 6px;
}
.fr b { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fr .grid { font-size: 1rem; letter-spacing: .05em; grid-row: span 2; text-align: right; }
.fr.not-played .muted { grid-column: 1; }
.fr.not-played > :last-child { grid-column: 2; grid-row: 1 / span 2; }

/* ---------- admin (dev) ---------- */
.admin-list { display: grid; grid-template-columns: minmax(0, 1fr); gap: .5rem; }
.admin-case { background: var(--panel); border: 1px solid var(--border); border-radius: 6px; }
.admin-case summary { padding: .7rem .8rem; cursor: pointer; min-height: 44px; }
.admin-body { padding: 0 .8rem .8rem; }
.admin-body .row { margin-bottom: .75rem; }
.admin-reasons { padding-left: 0; list-style: none; }

/* ---------- first-visit tour ---------- */
.tour { position: fixed; inset: 0; z-index: 50; }
.tour-spot {
  position: fixed; border-radius: 10px; pointer-events: none;
  box-shadow: 0 0 0 9999px rgba(3, 6, 10, .78); outline: 2px solid var(--accent); outline-offset: 2px;
}
.tour-card {
  position: fixed; background: var(--panel); border: 1px solid var(--accent); border-radius: var(--radius);
  padding: .9rem 1rem; box-shadow: 0 10px 30px rgba(0, 0, 0, .6);
}
.tour-count { margin: 0 0 .2rem; color: var(--accent); font-weight: 600; }
.tour-title { font-size: 1.1rem; margin: 0 0 .35rem; }
.tour-text { margin: 0 0 .9rem; }
.tour-actions { display: flex; justify-content: space-between; align-items: center; gap: .75rem; }
.tour-skip {
  font: inherit; font-size: .85rem; color: var(--muted); background: none; border: 0; padding: .5rem .25rem;
  min-height: 44px; cursor: pointer; text-decoration: underline; text-underline-offset: 3px;
}
.tour-skip:hover { color: var(--text); }
.tour-next { min-width: 6rem; }
@media (prefers-reduced-motion: no-preference) {
  .tour-spot { transition: top .25s ease, left .25s ease, width .25s ease, height .25s ease; }
  .tour-card { transition: top .25s ease, left .25s ease; }
}

/* ---------- first finished case ---------- */
.first-result { margin-top: 1.25rem; border-color: var(--accent); }
.first-result h3:first-child { margin-top: 0; }
.first-result ul { padding-left: 1.2rem; margin: 0 0 .5rem; }
.first-result li { margin-bottom: .25rem; }