/* AI Risk Lens — shared styles. Bootstrap 5 does the heavy lifting; this
   adds the brand palette, hero treatment, and chart/card polish. */

:root {
  --ink: #0f172a;
  --ink-soft: #334155;
  --accent: #2563eb;
  --accent-dk: #1d4ed8;
  --danger: #b91c1c;
  --good: #16a34a;
  --paper: #f8fafc;
  --line: #e2e8f0;
}

body {
  color: var(--ink);
  background: #ffffff;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

.navbar-brand { font-weight: 700; letter-spacing: -0.01em; }
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 7px;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  color: #fff; font-weight: 800; margin-right: 8px; font-size: 0.9rem;
}

/* Hero */
.hero {
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(124,58,237,0.10), transparent),
    radial-gradient(900px 450px at 0% 0%, rgba(37,99,235,0.10), transparent),
    var(--paper);
  border-bottom: 1px solid var(--line);
}
.hero h1 { font-weight: 800; letter-spacing: -0.02em; }
.eyebrow {
  text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.78rem;
  font-weight: 700; color: var(--accent-dk);
}
.lead-tight { font-size: 1.15rem; color: var(--ink-soft); }

/* Thesis "old vs new" comparison */
.compare-card { border: 1px solid var(--line); border-radius: 14px; height: 100%; }
.compare-card .card-header {
  font-weight: 700; border-bottom: 1px solid var(--line); background: #fff;
  border-top-left-radius: 14px; border-top-right-radius: 14px;
}
.compare-old .card-header { color: var(--ink-soft); }
.compare-new .card-header { color: var(--accent-dk); }
.compare-card ul { margin: 0; padding-left: 1.1rem; }
.compare-card li { margin-bottom: .5rem; }

/* Metric cards */
.metric-card {
  border: 1px solid var(--line); border-radius: 14px; padding: 1rem 1.1rem;
  background: #fff; height: 100%;
}
.metric-card .metric-label {
  font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--ink-soft); font-weight: 700;
}
.metric-card .metric-value { font-size: 1.7rem; font-weight: 800; letter-spacing: -0.02em; }
.metric-card .metric-sub { font-size: 0.82rem; color: var(--ink-soft); }
.metric-card.is-danger .metric-value { color: var(--danger); }
.metric-card.is-accent .metric-value { color: var(--accent-dk); }

/* Chart panels */
.panel { border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.panel .panel-head { padding: .9rem 1.1rem .2rem; }
.panel h5 { font-weight: 700; margin: 0; }
.panel .chart-wrap { position: relative; height: 300px; padding: .5rem 1rem 1rem; }
.caption {
  font-size: 0.85rem; color: var(--ink-soft); border-top: 1px dashed var(--line);
  padding: .7rem 1.1rem; margin: 0;
}
.caption .tag {
  display: inline-block; font-weight: 700; color: var(--accent-dk);
}

/* Controls */
.controls { border: 1px solid var(--line); border-radius: 14px; background: var(--paper); }
.controls label { font-weight: 600; font-size: 0.9rem; }
.controls .val { font-weight: 800; color: var(--accent-dk); }

/* Credibility gauge center text */
.gauge-z { font-size: 1.6rem; font-weight: 800; color: var(--accent-dk); }

/* Paper / markdown rendering */
.paper-body { max-width: 860px; }
.paper-body h2 { font-weight: 800; letter-spacing: -0.01em; margin-top: 2.2rem; }
.paper-body h3 { font-weight: 700; margin-top: 1.6rem; }
.paper-body table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.94rem; }
.paper-body th, .paper-body td { border: 1px solid var(--line); padding: .55rem .7rem; vertical-align: top; }
.paper-body th { background: var(--paper); text-align: left; }
.paper-body code { background: var(--paper); padding: .1rem .35rem; border-radius: 5px; color: #be185d; }
.paper-body pre { background: var(--ink); color: #e2e8f0; padding: 1rem; border-radius: 10px; overflow-x: auto; }
.paper-body pre code { background: transparent; color: inherit; padding: 0; }
.paper-body blockquote {
  border-left: 4px solid var(--accent); background: var(--paper);
  padding: .6rem 1rem; margin: 1rem 0; color: var(--ink-soft);
}
.formula {
  background: var(--paper); border: 1px solid var(--line); border-radius: 10px;
  padding: .8rem 1rem; margin: 1rem 0; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92rem; overflow-x: auto;
}

/* Table of contents */
.toc { position: sticky; top: 1rem; font-size: 0.9rem; }
.toc a { display: block; padding: .2rem 0; color: var(--ink-soft); text-decoration: none; border-left: 2px solid transparent; padding-left: .6rem; }
.toc a:hover { color: var(--accent-dk); border-left-color: var(--accent); }

footer { border-top: 1px solid var(--line); color: var(--ink-soft); font-size: 0.9rem; }

/* Development triangle */
.tri-wrap { border-collapse: collapse; font-size: 0.78rem; font-variant-numeric: tabular-nums; }
.tri-wrap th, .tri-wrap td { border: 1px solid var(--line); padding: 3px 7px; text-align: right; }
.tri-wrap thead th, .tri-wrap tbody th { background: var(--paper); color: var(--ink-soft); font-weight: 700; text-align: center; }
.tri-wrap td.fut { color: #cbd5e1; background: repeating-linear-gradient(45deg,#fff,#fff 4px,#f8fafc 4px,#f8fafc 8px); }
.tri-wrap td.diag { background: rgba(37,99,235,0.12); font-weight: 700; color: var(--accent-dk); }

.badge-soft { background: rgba(37,99,235,0.10); color: var(--accent-dk); font-weight: 600; }
.badge-danger-soft { background: rgba(185,28,28,0.10); color: var(--danger); font-weight: 600; }