/* rules-clinic — dark theme, vanilla CSS */
:root {
  --bg: #0b0c10;
  --bg-elev: #13151b;
  --bg-elev-2: #181b22;
  --border: #23262d;
  --border-2: #2e323c;
  --text: #e6e6e6;
  --text-dim: #9aa1ad;
  --text-muted: #6b7280;
  --accent: #7eb3ff;
  --accent-2: #ff9a3c;
  --good: #4ade80;
  --warn: #fbbf24;
  --bad: #f87171;
  --crit: #ef4444;
  --code-bg: #0e1015;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.hidden { display: none !important; }

/* ===== TOPBAR ===== */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 28px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
  position: sticky; top: 0; z-index: 10;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); }
.brand .logo {
  background: linear-gradient(135deg, #ff9a3c, #ff5e3c);
  width: 26px; height: 26px; border-radius: 6px;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700;
}
.brand .name { font-weight: 600; letter-spacing: -0.01em; }
.topbar nav a { margin-left: 18px; color: var(--text-dim); font-size: 14px; }
.topbar nav a:hover { color: var(--text); text-decoration: none; }
.topbar nav a.external::after { content: " ↗"; }

/* ===== MAIN ===== */
main { flex: 1; max-width: 1100px; margin: 0 auto; padding: 36px 28px 56px; width: 100%; }

/* ===== HERO ===== */
.hero { margin-bottom: 36px; }
.hero h1 { font-size: 30px; line-height: 1.25; margin: 0 0 16px; font-weight: 700; letter-spacing: -0.015em; }
.hero h1 .accent { color: var(--accent-2); }
.hero .sub { color: var(--text-dim); font-size: 15px; max-width: 760px; margin: 0 0 28px; }
.hero code { background: var(--code-bg); padding: 1px 6px; border-radius: 4px; font-size: 13px; }

/* ===== FORM ===== */
.scan-form {
  display: flex; gap: 8px; max-width: 680px;
  margin-bottom: 12px;
}
.scan-form input[type=text] {
  flex: 1; padding: 12px 14px;
  background: var(--bg-elev); color: var(--text);
  border: 1px solid var(--border-2); border-radius: 6px;
  font: inherit; outline: none;
}
.scan-form input[type=text]:focus { border-color: var(--accent); }
.scan-form input#branch-input { flex: 0 0 180px; }
.scan-form button {
  padding: 12px 22px;
  background: linear-gradient(135deg, #ff9a3c, #ff5e3c);
  color: #fff; border: 0; border-radius: 6px;
  font: inherit; font-weight: 600; cursor: pointer;
}
.scan-form button:hover { filter: brightness(1.07); }
.scan-form button:disabled { opacity: 0.5; cursor: not-allowed; }

.error {
  margin-top: 10px;
  background: rgba(248, 113, 113, 0.12);
  border: 1px solid rgba(248, 113, 113, 0.35);
  padding: 10px 14px; border-radius: 6px;
  color: #fecaca; font-size: 14px;
}
.progress {
  margin-top: 10px; color: var(--text-dim); font-size: 14px;
  display: flex; gap: 8px; align-items: center;
}
.progress::before {
  content: ""; width: 12px; height: 12px;
  border: 2px solid var(--text-dim); border-top-color: transparent;
  border-radius: 50%; animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== STATS STRIP ===== */
.stats-strip {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px; margin-bottom: 36px;
}
.stat {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 8px; padding: 14px 16px;
}
.stat .label { color: var(--text-dim); font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
.stat .value { color: var(--text); font-size: 22px; font-weight: 700; margin-top: 4px; }

/* ===== BLOCKS ===== */
.block { margin-bottom: 36px; }
.block h2 { font-size: 18px; margin: 0 0 12px; font-weight: 600; }
.block h1 { font-size: 26px; margin: 0 0 12px; font-weight: 700; }

/* ===== STEPS ===== */
.steps { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
.step {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 8px; padding: 16px;
  font-size: 14px; color: var(--text);
}
.step b { color: var(--accent-2); display: inline-block; margin-right: 6px; }

/* ===== TABLES ===== */
.table-wrap { background: var(--bg-elev); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
table { width: 100%; border-collapse: collapse; }
th, td {
  padding: 11px 14px; text-align: left; font-size: 14px;
  border-bottom: 1px solid var(--border);
}
th { color: var(--text-dim); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; background: var(--bg-elev-2); }
tbody tr:last-child td { border-bottom: 0; }
tbody tr { cursor: pointer; }
tbody tr:hover { background: var(--bg-elev-2); }

/* ===== BADGES ===== */
.badge { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 12px; font-weight: 600; }
.badge-low      { background: rgba(74, 222, 128, 0.15); color: var(--good); border: 1px solid rgba(74, 222, 128, 0.3); }
.badge-med      { background: rgba(251, 191, 36, 0.15); color: var(--warn); border: 1px solid rgba(251, 191, 36, 0.3); }
.badge-high     { background: rgba(248, 113, 113, 0.15); color: var(--bad); border: 1px solid rgba(248, 113, 113, 0.3); }
.badge-critical { background: rgba(239, 68, 68, 0.25); color: #fff; border: 1px solid var(--crit); }

.verdict-low      { color: var(--good); }
.verdict-med      { color: var(--warn); }
.verdict-high     { color: var(--bad); }
.verdict-critical { color: var(--crit); font-weight: 700; }

/* ===== SCAN PAGE ===== */
.scan-page { }
.scan-header { background: var(--bg-elev); border: 1px solid var(--border); border-radius: 8px; padding: 20px 24px; margin-bottom: 18px; display: grid; grid-template-columns: 1fr 220px; gap: 24px; align-items: start; }
.scan-title { grid-column: 1 / 2; }
.scan-title h1 { display: inline-block; font-size: 22px; margin: 0; vertical-align: middle; }
.scan-title .back { margin-right: 10px; font-size: 18px; color: var(--text-dim); }
.scan-title .repo-link { margin-left: 12px; color: var(--accent); font-size: 14px; }
.scan-meta { grid-column: 1 / 2; color: var(--text-dim); font-size: 13px; margin-top: 6px; display: flex; flex-wrap: wrap; gap: 12px 16px; }
.scan-meta span { display: inline-block; }
.scan-meta b { color: var(--text); }

.scan-score-card {
  grid-column: 2 / 3; grid-row: 1 / 3;
  text-align: center;
  background: var(--bg-elev-2); border: 1px solid var(--border-2);
  border-radius: 8px; padding: 14px;
}
.big-score { font-size: 44px; font-weight: 700; color: var(--accent-2); line-height: 1; }
.verdict { margin-top: 4px; font-weight: 600; }
.score-breakdown { margin-top: 10px; font-size: 12px; color: var(--text-dim); text-align: left; }
.score-breakdown div { display: flex; justify-content: space-between; padding: 2px 0; }

/* ===== TABS ===== */
.tabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); margin-bottom: 18px; }
.tabs a {
  padding: 10px 18px; color: var(--text-dim); font-size: 14px; font-weight: 500;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tabs a:hover { color: var(--text); text-decoration: none; }
.tabs a.active { color: var(--accent-2); border-bottom-color: var(--accent-2); }
.tab-panel { min-height: 200px; }

/* ===== FILE VIEWER ===== */
.file-card {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: 8px;
  margin-bottom: 16px; overflow: hidden;
}
.file-card-head {
  padding: 12px 16px; background: var(--bg-elev-2);
  display: flex; justify-content: space-between; align-items: center;
  cursor: pointer;
}
.file-card-head:hover { background: #1e2129; }
.file-card-head .path { font-family: ui-monospace, SF Mono, Consolas, monospace; font-size: 14px; }
.file-card-head .meta { color: var(--text-dim); font-size: 12px; }
.file-card-body { padding: 0; max-height: 600px; overflow: auto; display: none; }
.file-card.open .file-card-body { display: block; }
.file-card pre { margin: 0; padding: 14px 16px; font: 13px/1.5 ui-monospace, SF Mono, Consolas, monospace; }
.file-card .toggle::after { content: "▸"; color: var(--text-dim); margin-left: 10px; }
.file-card.open .toggle::after { content: "▾"; }

/* ===== FINDING CARDS ===== */
.finding {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: 8px;
  padding: 14px 16px; margin-bottom: 12px;
}
.finding-head { display: flex; gap: 10px; align-items: center; margin-bottom: 8px; }
.finding-head .rule { font-family: ui-monospace, SF Mono, Consolas, monospace; font-size: 13px; color: var(--text); }
.finding-head .files { color: var(--text-dim); font-size: 12px; font-family: ui-monospace, SF Mono, Consolas, monospace; margin-left: auto; }
.finding .message { font-size: 14px; color: var(--text); margin-bottom: 8px; }
.finding .excerpt {
  background: var(--code-bg); border: 1px solid var(--border);
  border-radius: 6px; padding: 10px 12px;
  font: 13px/1.5 ui-monospace, SF Mono, Consolas, monospace; color: var(--text-dim);
  word-break: break-word;
}

/* ===== EMPTY STATES ===== */
.empty {
  background: var(--bg-elev); border: 1px dashed var(--border-2); border-radius: 8px;
  padding: 28px; text-align: center; color: var(--text-dim);
}
.empty b { color: var(--good); }

/* ===== MERGE PROPOSAL ===== */
.merge-actions { display: flex; gap: 8px; margin-bottom: 12px; }
.merge-actions button {
  padding: 8px 14px; background: var(--bg-elev-2); color: var(--text);
  border: 1px solid var(--border-2); border-radius: 6px; cursor: pointer; font: inherit; font-size: 13px;
}
.merge-actions button:hover { background: #1e2129; }
.merge-pre {
  background: var(--code-bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 18px 20px; max-height: 720px; overflow: auto;
  font: 13px/1.55 ui-monospace, SF Mono, Consolas, monospace;
  white-space: pre-wrap; word-break: break-word;
}

/* ===== ABOUT ===== */
.prose { max-width: 760px; }
.prose p { margin: 12px 0; color: var(--text); }
.prose h2 { font-size: 17px; margin: 24px 0 10px; }
.prose code { background: var(--code-bg); padding: 1px 6px; border-radius: 4px; font-size: 13px; }
.prose pre { background: var(--code-bg); border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; overflow: auto; }
.prose ol.rules li { margin: 6px 0; }

/* ===== LEADERBOARD ===== */
.leaderboard-controls { display: flex; gap: 8px; margin-bottom: 14px; }
.leaderboard-controls button {
  padding: 6px 12px; background: var(--bg-elev); color: var(--text-dim);
  border: 1px solid var(--border-2); border-radius: 6px; cursor: pointer; font: inherit; font-size: 13px;
}
.leaderboard-controls button.active { color: var(--text); border-color: var(--accent-2); }

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--border); background: var(--bg-elev);
  padding: 14px 28px; color: var(--text-muted); font-size: 12px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
}
#health-line { font-family: ui-monospace, SF Mono, Consolas, monospace; }

/* ===== RESPONSIVE ===== */
@media (max-width: 720px) {
  .hero h1 { font-size: 22px; }
  .scan-form { flex-direction: column; }
  .scan-form input#branch-input { flex: 1 1 auto; }
  .stats-strip { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr; }
  .scan-header { grid-template-columns: 1fr; }
  .scan-score-card { grid-row: auto; }
  .tabs { overflow-x: auto; }
  .tabs a { padding: 10px 12px; }
  table { font-size: 13px; }
  th, td { padding: 10px 8px; }
  .topbar { padding: 12px 16px; }
  main { padding: 24px 16px; }
}