:root {
  --bg: #0b0e12;
  --panel: #141920;
  --panel-2: #1b222c;
  --border: #2a3340;
  --text: #e6e9ee;
  --text-dim: #9aa5b3;
  --accent: #4fd1a5;
  --accent-2: #f2b84b;
  --red: #e6685f;
  --green: #4fd1a5;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* { 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: 1.55;
}

header {
  padding: 28px 32px 18px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #10151c, var(--bg));
}

header h1 {
  margin: 0 0 6px;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

header p {
  margin: 0;
  color: var(--text-dim);
  max-width: 780px;
  font-size: 0.95rem;
}

nav {
  display: flex;
  gap: 4px;
  padding: 0 32px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  overflow-x: auto;
}

nav button {
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 12px 16px;
  font-size: 0.9rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

nav button:hover { color: var(--text); }

nav button.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 32px 80px;
}

section.tab { display: none; }
section.tab.active { display: block; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 22px;
  margin-bottom: 18px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

label {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  margin-bottom: 6px;
}

select, input[type=number] {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 10px;
  border-radius: 6px;
  font-size: 0.92rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin-top: 10px;
}

th, td {
  text-align: right;
  padding: 7px 10px;
  border-bottom: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}

th:first-child, td:first-child { text-align: left; }

th {
  color: var(--text-dim);
  font-weight: 600;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.pos { color: var(--green); }
.neg { color: var(--red); }

.stat-row {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
  margin: 14px 0 4px;
}

.stat {
  min-width: 140px;
}

.stat .label {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.stat .value {
  font-size: 1.3rem;
  font-weight: 600;
  font-family: var(--mono);
}

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge.pass { background: rgba(79,209,165,0.15); color: var(--green); }
.badge.fail { background: rgba(230,104,95,0.15); color: var(--red); }

pre {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  overflow-x: auto;
  font-size: 0.82rem;
  white-space: pre-wrap;
}

.markdown-body h1, .markdown-body h2, .markdown-body h3 {
  color: var(--text);
  margin-top: 1.6em;
}
.markdown-body h1:first-child { margin-top: 0; }
.markdown-body code {
  background: var(--panel-2);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.88em;
}
.markdown-body pre code { background: none; padding: 0; }
.markdown-body a { color: var(--accent); }
.markdown-body blockquote {
  border-left: 3px solid var(--border);
  margin-left: 0;
  padding-left: 14px;
  color: var(--text-dim);
}
.markdown-body table { margin: 10px 0 20px; }

iframe.heatmap-frame {
  width: 100%;
  height: 82vh;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.subtle { color: var(--text-dim); font-size: 0.86rem; }

footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.8rem;
  padding: 30px 0;
}

footer a { color: var(--accent); }

input[type=range] {
  width: 100%;
  accent-color: var(--accent);
}

#eq-preset-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}