/* 0DTE Strategy Research — Public Site Styles */
:root {
  --bg: #0e1117;
  --surface: #161b22;
  --surface-2: #1c2128;
  --border: #30363d;
  --text: #e6edf3;
  --text-dim: #8b949e;
  --accent: #58a6ff;
  --accent-2: #7ee787;
  --warn: #d29922;
  --bad: #f85149;
  --good: #3fb950;
  --mono: 'SF Mono', Menlo, Consolas, monospace;
  --serif: 'Charter', 'Georgia', serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}
.site-header .layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  letter-spacing: -0.01em;
}
.brand .dot { color: var(--accent-2); }

nav.primary {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
nav.primary a {
  padding: 6px 12px;
  border-radius: 6px;
  color: var(--text-dim);
  font-size: 0.92rem;
  font-weight: 500;
  transition: all 0.15s;
}
nav.primary a:hover {
  background: var(--surface-2);
  color: var(--text);
  text-decoration: none;
}
nav.primary a.active {
  background: var(--surface-2);
  color: var(--accent);
}

/* Hero */
.hero {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--border);
}
.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0 0 16px;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.hero p.lede {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 720px;
  margin: 0;
}
.tag {
  display: inline-block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-2);
  margin-bottom: 12px;
  font-weight: 600;
}

/* Sections */
section {
  padding: 48px 0;
  border-bottom: 1px solid var(--border);
}
section:last-of-type { border-bottom: none; }
section h2 {
  font-size: 1.5rem;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
section h3 {
  font-size: 1.15rem;
  margin: 32px 0 12px;
  color: var(--accent);
}
section p { color: var(--text); }

/* KPI grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin: 24px 0 0;
}
.kpi {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 18px;
}
.kpi .label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.kpi .value {
  font-size: 1.5rem;
  font-weight: 600;
  font-family: var(--mono);
  letter-spacing: -0.01em;
}
.kpi .value.good { color: var(--good); }
.kpi .value.bad { color: var(--bad); }
.kpi .sub { font-size: 0.85rem; color: var(--text-dim); margin-top: 4px; }

/* Tables */
.table-wrap {
  overflow-x: auto;
  margin: 16px 0;
  border-radius: 8px;
  border: 1px solid var(--border);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
th, td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
th {
  background: var(--surface);
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}
td { background: var(--surface); }
tr:last-child td { border-bottom: none; }
td.num, th.num { text-align: right; font-family: var(--mono); }
td.good { color: var(--good); }
td.bad { color: var(--bad); }
td.highlight { background: var(--surface-2); }

/* Callout */
.callout {
  background: var(--surface-2);
  border-left: 3px solid var(--accent);
  padding: 14px 18px;
  border-radius: 0 6px 6px 0;
  margin: 24px 0;
  font-size: 0.95rem;
}
.callout.warn { border-left-color: var(--warn); }
.callout.bad { border-left-color: var(--bad); }
.callout strong { color: var(--accent); }
.callout.warn strong { color: var(--warn); }
.callout.bad strong { color: var(--bad); }
.callout p { margin: 0; }
.callout p + p { margin-top: 8px; }

/* Chart */
.chart-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin: 20px 0;
}
.chart-canvas-box {
  position: relative;
  width: 100%;
  height: 320px;
}
.chart-canvas-box canvas {
  display: block;
}
.chart-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}
.chart-sub {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 16px;
}

/* Footer */
footer.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  font-size: 0.85rem;
  color: var(--text-dim);
  background: var(--surface);
  margin-top: 48px;
}
footer.site-footer p { margin: 4px 0; }
footer.site-footer .layout { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* Lists */
ul.clean { list-style: none; padding: 0; }
ul.clean li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
ul.clean li:last-child { border-bottom: none; }

/* Pill */
.pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--surface-2);
  color: var(--text-dim);
  margin-right: 6px;
}
.pill.good { background: rgba(63, 185, 80, 0.15); color: var(--good); }
.pill.bad  { background: rgba(248, 81, 73, 0.15); color: var(--bad); }
.pill.warn { background: rgba(210, 153, 34, 0.15); color: var(--warn); }

/* Two-column */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 768px) {
  .two-col { grid-template-columns: 1fr; }
  .hero { padding: 36px 0 28px; }
  section { padding: 32px 0; }
  th, td { padding: 8px 10px; font-size: 0.85rem; }
}

/* Code */
code {
  font-family: var(--mono);
  background: var(--surface-2);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
}

/* Definition list */
dl.defs { display: grid; grid-template-columns: 180px 1fr; gap: 12px 24px; margin: 16px 0; }
dl.defs dt { color: var(--text-dim); font-weight: 600; font-size: 0.9rem; }
dl.defs dd { margin: 0; }
@media (max-width: 600px) {
  dl.defs { grid-template-columns: 1fr; gap: 4px 0; }
  dl.defs dd { margin-bottom: 12px; }
}

/* Page-only intro */
.page-intro {
  padding: 48px 0 32px;
}
.page-intro h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}
.page-intro p {
  color: var(--text-dim);
  margin: 0;
  font-size: 1.05rem;
  max-width: 720px;
}