:root {
  --bg: #f6f7f9;
  --panel-bg: #ffffff;
  --border: #dde1e6;
  --text: #1a2028;
  --text-muted: #5b6572;
  --accent: #2454a8;
  --met: #1f7a3d;
  --met-bg: #e7f5ec;
  --partial: #9a6a00;
  --partial-bg: #fdf3dd;
  --not-met: #b3261e;
  --not-met-bg: #fbe9e8;
  --compliant: #1f7a3d;
  --minor: #9a6a00;
  --major: #b3261e;
  --mono: "SF Mono", Consolas, Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c;
    --panel-bg: #1c2028;
    --border: #333a45;
    --text: #e7e9ec;
    --text-muted: #9aa4b2;
    --accent: #6ea8fe;
    --met: #58c777;
    --met-bg: #133821;
    --partial: #e0b04a;
    --partial-bg: #3a2f13;
    --not-met: #ef6a63;
    --not-met-bg: #3a1917;
    --compliant: #58c777;
    --minor: #e0b04a;
    --major: #ef6a63;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header {
  padding: 2rem 2rem 1rem;
  max-width: 900px;
  margin: 0 auto;
}

h1 { font-size: 1.5rem; margin: 0 0 0.4rem; }
.subtitle { color: var(--text-muted); margin: 0; font-size: 0.95rem; }

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
}

.panel h2 { font-size: 1.05rem; margin: 0 0 0.75rem; }
.panel h2:not(:first-child) { margin-top: 1.5rem; }

.row { margin-bottom: 0.9rem; display: flex; flex-direction: column; gap: 0.35rem; }
.row label { font-size: 0.85rem; color: var(--text-muted); }

.checkbox-row label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
}
.checkbox-row input[type="checkbox"] { width: auto; }
.house-style-caveat {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin: 0.3rem 0 0 1.6rem;
  font-style: italic;
}

select, textarea, input[type="file"] {
  font: inherit;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  width: 100%;
}

textarea { resize: vertical; font-family: var(--mono); font-size: 0.85rem; }

.indicator-detail {
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.6rem 0.8rem;
  margin-bottom: 1rem;
}

.demo-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 1rem;
}
.demo-label { font-size: 0.85rem; color: var(--text-muted); margin-right: 0.3rem; }
.demo-btn {
  font-size: 0.8rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  cursor: pointer;
}
.demo-btn:hover { background: var(--accent); color: white; }

.actions { flex-direction: row; gap: 0.75rem; flex-wrap: wrap; }

button {
  font: inherit;
  padding: 0.6rem 1.1rem;
  border-radius: 6px;
  border: none;
  background: var(--accent);
  color: white;
  cursor: pointer;
  font-weight: 600;
}
button:disabled { opacity: 0.45; cursor: not-allowed; }
button#run-again-button, button#compare-button { background: transparent; border: 1px solid var(--accent); color: var(--accent); }

.status { font-size: 0.85rem; color: var(--text-muted); min-height: 1.2em; margin-top: 0.5rem; }
.status.error { color: var(--not-met); }

.overall-badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}
.overall-badge.compliant { background: var(--met-bg); color: var(--compliant); }
.overall-badge.minor_nc { background: var(--partial-bg); color: var(--minor); }
.overall-badge.major_nc { background: var(--not-met-bg); color: var(--major); }

.elements-list { display: flex; flex-direction: column; gap: 0.9rem; }

.element-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.9rem 1rem;
}

.element-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}
.element-id { font-family: var(--mono); font-weight: 700; }

.determination-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.determination-badge.met { background: var(--met-bg); color: var(--met); }
.determination-badge.partial { background: var(--partial-bg); color: var(--partial); }
.determination-badge.not_met { background: var(--not-met-bg); color: var(--not-met); }

.evidence-ref {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  background: var(--bg);
  border-radius: 4px;
  padding: 0.4rem 0.6rem;
  margin: 0.4rem 0;
  white-space: pre-wrap;
}

.rationale { font-size: 0.9rem; }

.close-out { margin-top: 1.5rem; }
.close-out h3 { font-size: 0.95rem; margin-bottom: 0.5rem; }
.close-out ul { margin: 0; padding-left: 1.3rem; }
.close-out li { margin-bottom: 0.3rem; }

.trace-panel { font-size: 0.85rem; }
.trace-note { color: var(--text-muted); margin-top: 0; }

#trace-table { width: 100%; border-collapse: collapse; }
#trace-table td { padding: 0.35rem 0.5rem; border-bottom: 1px solid var(--border); vertical-align: top; }
#trace-table td:first-child { color: var(--text-muted); width: 220px; }
#trace-table td:last-child { font-family: var(--mono); word-break: break-all; }

.determinism-check {
  margin-top: 1rem;
  padding: 0.6rem 0.8rem;
  border-radius: 6px;
  font-size: 0.85rem;
}
.determinism-check.match { background: var(--met-bg); color: var(--met); }
.determinism-check.mismatch { background: var(--not-met-bg); color: var(--not-met); }

.compare-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
@media (max-width: 720px) {
  .compare-columns { grid-template-columns: 1fr; }
}
.compare-column h3 { font-size: 0.9rem; margin: 0 0 0.6rem; color: var(--text-muted); }
.compare-content .element-card { margin-bottom: 0.75rem; }
.compare-content .overall-badge { margin-bottom: 1rem; }