:root {
  --bg: #0a0a0a;
  --bg-elev: #121214;
  --bg-elev-2: #1a1a1f;
  --fg: #e6e6ec;
  --muted: #8a8a95;
  --accent: #00ff9f;
  --accent-dim: #00cc7f;
  --warn: #ffcc4d;
  --danger: #ff5470;
  --border: #2a2a32;
  --code-font: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --ui-font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--ui-font);
  font-size: 15px;
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 24px; flex: 1; }

/* Topbar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px; border-bottom: 1px solid var(--border);
  background: rgba(10,10,10,0.85); backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 10;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand .logo { color: var(--accent); font-size: 22px; }
.brand-name { font-weight: 700; letter-spacing: 0.5px; font-family: var(--code-font); }
.tagline { color: var(--muted); font-size: 13px; }
.nav { display: flex; gap: 18px; }
.nav a {
  color: var(--fg); padding: 6px 10px; border-radius: 6px;
  font-size: 14px; font-weight: 500;
}
.nav a:hover { background: var(--bg-elev); text-decoration: none; }
.nav a.active { color: var(--accent); background: rgba(0,255,159,0.06); }

/* Hero */
.hero { margin-bottom: 24px; }
.hero h1 { font-size: 32px; line-height: 1.15; margin: 0 0 12px; }
.hero .lede { color: var(--muted); max-width: 760px; }

/* Analyzer */
.analyzer-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 18px;
}
@media (max-width: 920px) {
  .analyzer-grid { grid-template-columns: 1fr; }
}
.editor-pane, .result-pane {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px;
}
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 8px; }
.row.toolbar { justify-content: flex-start; gap: 10px; margin-top: 10px; }
.row label { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.row select {
  background: var(--bg-elev-2); color: var(--fg); border: 1px solid var(--border);
  border-radius: 6px; padding: 5px 8px; font-family: inherit;
}
.checkbox input { accent-color: var(--accent); }
.loc-counter { color: var(--muted); margin-left: auto; font-family: var(--code-font); font-size: 12px; }

#code {
  width: 100%; min-height: 320px; resize: vertical;
  background: var(--bg); color: var(--fg);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 12px; font-family: var(--code-font); font-size: 13px; line-height: 1.5;
  outline: none;
}
#code:focus { border-color: var(--accent-dim); box-shadow: 0 0 0 2px rgba(0,255,159,0.15); }

.btn {
  background: var(--bg-elev-2); color: var(--fg);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 9px 16px; font-family: inherit; font-size: 14px; font-weight: 600;
  cursor: pointer; transition: all 0.12s ease;
}
.btn:hover { border-color: var(--accent-dim); }
.btn.primary { background: var(--accent); color: #002418; border-color: var(--accent); }
.btn.primary:hover { background: var(--accent-dim); border-color: var(--accent-dim); }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Result */
.result-empty { color: var(--muted); display: flex; align-items: center; justify-content: center; min-height: 320px; }

.score-card {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 20px 0 14px;
  border-bottom: 1px solid var(--border); margin-bottom: 14px;
}
.score-gauge { width: 220px; height: 124px; position: relative; }
.score-gauge svg { width: 100%; height: 100%; }
.score-value {
  position: absolute; left: 50%; bottom: 6px;
  transform: translateX(-50%);
  font-family: var(--code-font); font-size: 38px; font-weight: 700;
}
.score-bin {
  font-family: var(--code-font); text-transform: uppercase; letter-spacing: 1px;
  font-size: 13px; padding: 4px 10px; border-radius: 999px;
  background: var(--bg-elev-2); border: 1px solid var(--border);
}
.score-bin.human { color: var(--accent); border-color: rgba(0,255,159,0.4); }
.score-bin.mixed { color: var(--warn); border-color: rgba(255,204,77,0.4); }
.score-bin.slop  { color: var(--danger); border-color: rgba(255,84,112,0.4); }

.score-meta { color: var(--muted); font-size: 13px; font-family: var(--code-font); margin-top: 6px; }
.score-meta .pid { color: var(--accent); }

.share-row { margin-top: 8px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.share-row code {
  background: var(--bg); padding: 3px 6px; border-radius: 4px; font-size: 12px;
  border: 1px solid var(--border);
}

.pattern-list { display: flex; flex-direction: column; gap: 6px; }
.pattern-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 9px 12px; background: var(--bg-elev-2); border: 1px solid var(--border);
  border-radius: 8px; cursor: pointer;
  transition: border-color 0.15s;
}
.pattern-row:hover { border-color: var(--accent-dim); }
.pattern-row.zero { opacity: 0.45; cursor: default; }
.pattern-row.zero:hover { border-color: var(--border); }
.pattern-name { font-weight: 500; }
.pattern-count {
  font-family: var(--code-font); font-size: 12px; color: var(--muted);
}
.pattern-count .hit-num { color: var(--fg); font-weight: 700; margin-right: 6px; }
.pattern-row.expanded .examples { display: block; }
.examples {
  display: none; padding: 8px 12px; background: var(--bg);
  border: 1px solid var(--border); border-top: none;
  border-radius: 0 0 8px 8px; font-family: var(--code-font); font-size: 12px;
  max-height: 160px; overflow: auto;
}
.example-line { color: var(--muted); margin-bottom: 4px; }
.example-line .ln { color: var(--accent-dim); margin-right: 6px; }

.llm-card {
  background: var(--bg-elev-2); border: 1px solid var(--border);
  padding: 12px; border-radius: 8px; margin-top: 14px;
}
.llm-card h4 { margin: 0 0 4px; font-size: 14px; }
.llm-verdict { font-family: var(--code-font); font-size: 12px; }
.llm-verdict.ai { color: var(--danger); }
.llm-verdict.human { color: var(--accent); }
.llm-verdict.mixed { color: var(--warn); }
.llm-reason { color: var(--muted); font-size: 13px; margin-top: 6px; }
.llm-disabled { color: var(--muted); font-size: 13px; }

/* List views */
.list-view h2 { margin-bottom: 4px; }
.muted { color: var(--muted); }
.list-grid { display: flex; flex-direction: column; gap: 10px; margin-top: 14px; }
.list-card {
  display: grid; grid-template-columns: 90px 1fr auto; gap: 14px; align-items: center;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 8px; padding: 12px 14px;
}
.list-card .score-pill {
  font-family: var(--code-font); font-weight: 700; font-size: 18px;
  text-align: center; padding: 6px 0; border-radius: 6px;
}
.list-card .score-pill.human { background: rgba(0,255,159,0.10); color: var(--accent); }
.list-card .score-pill.mixed { background: rgba(255,204,77,0.10); color: var(--warn); }
.list-card .score-pill.slop  { background: rgba(255,84,112,0.10); color: var(--danger); }
.list-card .preview {
  font-family: var(--code-font); color: var(--muted); font-size: 12px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.list-card .meta { font-size: 12px; color: var(--muted); font-family: var(--code-font); }

/* Snippet view */
.snippet-view .back { font-size: 13px; }
.snippet-view h2 { margin-top: 12px; }
.code-block {
  background: var(--bg); color: var(--fg);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 14px; font-family: var(--code-font); font-size: 12.5px;
  white-space: pre; overflow: auto; max-height: 480px; line-height: 1.55;
}
.feedback-row { display: flex; gap: 10px; align-items: center; margin: 12px 0 4px; }
.feedback-counts { color: var(--muted); font-size: 13px; }

/* Stats */
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 12px; margin-top: 12px;
}
@media (max-width: 720px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
.stat-tile {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px;
}
.stat-tile .num { font-family: var(--code-font); font-size: 28px; font-weight: 700; color: var(--accent); }
.stat-tile .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.6px; }
.stats-charts { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 18px; }
@media (max-width: 920px) { .stats-charts { grid-template-columns: 1fr; } }
.card {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px;
}
.card h3 { margin: 0 0 10px; font-size: 15px; }

/* About */
.about-view h2, .about-view h3 { margin-top: 14px; }
.about-view pre {
  background: var(--bg-elev); padding: 12px; border-radius: 8px;
  border: 1px solid var(--border); font-family: var(--code-font); font-size: 12.5px;
  overflow-x: auto;
}
#patterns-list {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
}
@media (max-width: 760px) { #patterns-list { grid-template-columns: 1fr; } }
.pattern-card {
  background: var(--bg-elev); border: 1px solid var(--border);
  padding: 10px 12px; border-radius: 8px;
}
.pattern-card .key { font-family: var(--code-font); color: var(--muted); font-size: 11px; }
.pattern-card .name { font-weight: 600; }
.pattern-card .desc { font-size: 13px; color: var(--muted); margin-top: 4px; }
.pattern-card .w { float: right; font-family: var(--code-font); color: var(--accent); }

.footer {
  border-top: 1px solid var(--border); padding: 16px 24px; text-align: center;
  color: var(--muted); font-size: 12px;
}
.loading { color: var(--muted); padding: 30px 0; text-align: center; }
.error-box {
  background: rgba(255,84,112,0.10); color: var(--danger);
  border: 1px solid rgba(255,84,112,0.4);
  padding: 10px 14px; border-radius: 8px; margin: 10px 0;
}