/* ============================================================
   Layout Styles
   Scenario Comparison Dashboard v1
   ============================================================ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-primary);
  background: var(--color-background);
  color: var(--color-text-primary);
  line-height: var(--line-height-normal);
  min-height: 100vh;
}

.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* --- Dashboard Content --- */
.dashboard-content {
  flex: 1;
  padding: var(--space-lg) var(--space-xl);
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}

/* --- KPI Grid --- */
.kpi-grid {
  display: grid;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.kpi-grid--overview {
  grid-template-columns: repeat(5, 1fr) 2px repeat(3, 1fr) 2px repeat(2, 1fr);
  align-items: stretch;
}

.kpi-grid__divider {
  background: var(--color-border);
  width: 1px;
  margin: var(--space-sm) 0;
  justify-self: center;
}

/* --- Chart Grid --- */
.chart-grid {
  display: grid;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.chart-grid--overview-top {
  grid-template-columns: 1fr 1fr;
}

.chart-grid--gap-top {
  margin-top: var(--space-lg);
}

.chart-grid--overview-bottom {
  grid-template-columns: 1fr;
}

.chart-grid--trending {
  grid-template-columns: 1fr;
}

.chart-grid--detail {
  grid-template-columns: 1fr;
}

/* --- Responsive --- */
@media (max-width: 1200px) {
  .kpi-grid--overview {
    grid-template-columns: repeat(5, 1fr);
  }
  .kpi-grid__divider {
    display: none;
  }
  .chart-grid--overview-top {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .dashboard-content {
    padding: var(--space-md);
  }
  .kpi-grid--overview {
    grid-template-columns: repeat(2, 1fr);
  }
  .filter-bar {
    padding: var(--space-sm) var(--space-md);
  }
}

/* --- Section Headers --- */
.section-header {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: var(--space-sm);
  padding-left: var(--space-xs);
}

/* --- KPI Group Layout --- */
.kpi-groups {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.kpi-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: var(--space-md);
}

.kpi-groups__divider {
  width: 1px;
  background: var(--color-border);
  margin: var(--space-sm) 0;
}

@media (max-width: 1200px) {
  .kpi-groups {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  .kpi-groups__divider {
    display: none;
  }
}

/* --- Utility --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}