/* ═══════════════════════════════════════════════════════════════
   AI Metrics Dashboard — Shared Design System
   Loaded by: dashboard.html, team_dashboard.html,
              download.html, metrics_guide.html
   ═══════════════════════════════════════════════════════════════ */

/* ── Variables ── */
:root {
  --bg:       #0d1117;
  --surface:  #161b22;
  --surface2: #21262d;
  --border:   #30363d;
  --text:     #e6edf3;
  --muted:    #8b949e;
  --blue:     #58a6ff;
  --green:    #3fb950;
  --orange:   #ffa657;
  --purple:   #d2a8ff;
  --red:      #f78166;
  --yellow:   #e3b341;
  --gold:     #ffd700;
  --teal:     #39d353;
  --radius:   8px;
}

/* ── Base reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 14px; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Section title ── */
.section-title { font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .6px; margin: 28px 0 12px; }

/* ── Badge pills ── */
.badge-pill     { display: inline-block; padding: 2px 9px; border-radius: 10px; font-size: 11px; font-weight: 600; white-space: nowrap; }
.badge-champion { background: #ffd70022; color: var(--gold);   border: 1px solid var(--gold); }
.badge-power    { background: #58a6ff22; color: var(--blue);   border: 1px solid var(--blue); }
.badge-learner  { background: #3fb95022; color: var(--green);  border: 1px solid var(--green); }
.badge-starting { background: #e3b34122; color: var(--yellow); border: 1px solid var(--yellow); }
.badge-coaching { background: #f7816622; color: var(--red);    border: 1px solid var(--red); }

/* ── Stat cards ── */
.stat-card  { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; text-align: center; }
.stat-icon  { font-size: 20px; margin-bottom: 6px; }
.stat-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .4px; margin-bottom: 4px; }
.stat-value { font-size: 26px; font-weight: 700; line-height: 1; }
.stat-sub   { font-size: 11px; color: var(--muted); margin-top: 4px; }

/* ── Tables ── */
table { width: 100%; border-collapse: collapse; }
thead { background: var(--surface2); }
th { text-align: left; font-size: 11px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .4px; padding: 10px 14px; border-bottom: 1px solid var(--border); white-space: nowrap; }
td { padding: 11px 14px; border-bottom: 1px solid var(--border); font-size: 13px; vertical-align: middle; }
tr:last-child td { border-bottom: none; }
.num { font-variant-numeric: tabular-nums; }

/* ── Week table ── */
.week-table-wrap       { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-bottom: 8px; }
.week-row-clickable    { cursor: pointer; }
.week-row-clickable:hover td { background: #1f6feb11 !important; }
.week-row-active td    { background: #1f6feb1a !important; border-left: 3px solid var(--blue); }

/* ── Chart grids ── */
.chart-grid       { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 4px; }
.chart-card       { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.chart-label      { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .4px; margin-bottom: 12px; font-weight: 600; }
.drill-chart-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 4px; }
.drill-chart-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.drill-chart-label{ font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .4px; margin-bottom: 12px; font-weight: 600; }

/* ── Empty state ── */
.empty    { text-align: center; padding: 60px 24px; color: var(--muted); }
.empty h3 { font-size: 18px; color: var(--text); margin-bottom: 10px; }
.empty code { background: var(--surface2); border: 1px solid var(--border); border-radius: 4px; padding: 2px 8px; font-size: 12px; }

/* ── Footer ── */
.footer { text-align: center; padding: 24px; color: var(--muted); font-size: 12px; border-top: 1px solid var(--border); margin-top: 16px; }

/* ── Scrollbar ── */
::-webkit-scrollbar       { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .stat-grid        { grid-template-columns: repeat(2, 1fr) !important; }
  .chart-grid       { grid-template-columns: 1fr; }
  .drill-chart-grid { grid-template-columns: 1fr; }
}