/* ============================================================
   Vortal — KPI / Stat Card
   Requires: components/card.css, components/badges.css

   Builds on .card — use together:
   <div class="card kpi-card">...</div>

   Anatomy:
     .kpi-icon        optional icon area
     .kpi-label       metric name
     .kpi-value       primary number / stat
     .kpi-trend       change indicator (up/down/neutral)
     .kpi-subtext     supporting context line
   ============================================================ */

/* ── Layout ──────────────────────────────────────────────── */
.kpi-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
}

.kpi-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
}

/* ── Icon ────────────────────────────────────────────────── */
.kpi-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  inline-size: 2.5rem;
  block-size: 2.5rem;
  border-radius: var(--radius-md);
  background-color: color-mix(in oklch, var(--color-primary) 10%, transparent);
  color: var(--color-primary);
  flex-shrink: 0;
}

.kpi-icon svg {
  inline-size: 1.25rem;
  block-size: 1.25rem;
}

/* ── Label ───────────────────────────────────────────────── */
.kpi-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  color: var(--color-text-muted);
  text-transform: uppercase;
}

/* ── Value ───────────────────────────────────────────────── */
.kpi-value {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

.kpi-value-unit {
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text-muted);
  margin-inline-start: var(--space-1);
}

/* ── Trend ───────────────────────────────────────────────── */
.kpi-trend {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: 500;
}

.kpi-trend svg {
  inline-size: 0.875rem;
  block-size: 0.875rem;
}

.kpi-trend--up   { color: oklch(35% 0.12 145); }
.kpi-trend--down { color: oklch(42% 0.18 25);  }
.kpi-trend--flat { color: var(--color-text-muted); }

/* ── Subtext ─────────────────────────────────────────────── */
.kpi-subtext {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
}

/* ── Grid layout for dashboard ───────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

@media (max-width: 640px) {
  .kpi-grid {
    grid-template-columns: 1fr 1fr;
  }

  .kpi-value {
    font-size: var(--text-3xl);
  }
}

@media (max-width: 400px) {
  .kpi-grid {
    grid-template-columns: 1fr;
  }
}