/* ── Metrics summary grid ── */
#metrics {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}

.metric {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  position: relative;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-smooth);
  box-shadow: var(--shadow-card);
}

.metric::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--duration-normal);
}

.metric:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.metric:hover::before {
  opacity: 1;
}

.metric h4 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 10px;
}

.metric .value {
  font-size: 30px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

/* ── Chart containers ── */
.chart-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.chart-grid > * {
  min-width: 0;
}

.chart-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-card);
  transition: all var(--duration-normal);
  position: relative;
  overflow: hidden;
}

.chart-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(99,102,241,0.02) 0%, transparent 40%);
  pointer-events: none;
}

.chart-box:hover {
  border-color: var(--border-strong);
}

.chart-box h3 {
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  position: relative;
}

.chart-wrap {
  position: relative;
  height: 240px;
}

/* ── Stats grid for metrics page ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
  transition: all var(--duration-normal) var(--ease-smooth);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--duration-normal);
  pointer-events: none;
}

.stat-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.stat-card:hover::after {
  opacity: 0.04;
}

.stat-card .stat-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}

.stat-card .stat-value {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.03em;
  position: relative;
  z-index: 1;
}