.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.dashboard-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(to right, #f8fafc, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.readiness-score {
  text-align: right;
}

.readiness-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-emerald);
  font-family: var(--font-numbers);
}

.grid-dashboard {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
}

/* Module 1: Vitality (Takes up 4 cols, spans more rows) */
.module-vitality { grid-column: span 5; }

/* Module 2: GI Shield */
.module-gi { grid-column: span 7; }

/* Module 3: Supplement Stack */
.module-supplements { grid-column: span 4; }

/* Module 4: Insights */
.module-insights { grid-column: span 4; }

/* Module 5: Workouts */
.module-workouts { grid-column: span 4; }

/* Internal layouts */
.kpi-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.kpi-card {
  background: rgba(0,0,0,0.2);
  border-radius: var(--radius-sm);
  padding: 1rem;
  text-align: center;
}

.kpi-value {
  font-size: 2.5rem;
  font-weight: 700;
  margin: 0.5rem 0;
}

.kpi-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

/* Split layout for GIShield */
.gi-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.heat-map-bar {
  display: flex;
  height: 8px;
  border-radius: 4px;
  overflow: hidden;
  margin-top: 0.5rem;
}

.heat-segment {
  flex: 1;
}
.heat-safe { background: var(--accent-emerald); }
.heat-warn { background: var(--accent-gold); }
.heat-danger { background: var(--accent-crimson); }

@media (max-width: 1024px) {
  .module-vitality { grid-column: span 12; }
  .module-gi { grid-column: span 12; }
  .module-supplements { grid-column: span 6; }
  .module-insights { grid-column: span 6; }
  .module-workouts { grid-column: span 12; }
}

/* --- Responsive Utility Classes --- */
.stats-banners {
  display: flex;
  gap: 2rem;
  align-items: center;
  text-align: right;
}

.stats-banners > div {
  border-left: 1px solid var(--border-color);
  padding-left: 1.5rem;
}

.stats-banners > div:first-child {
  border-left: none;
  padding-left: 0;
}

.baseline-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr) auto;
  gap: 1rem;
  margin-bottom: 2rem;
  align-items: end;
}

.todo-split {
  grid-column: span 6;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.modal-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
}

.workout-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .module-supplements, .module-insights, .gi-grid { grid-column: span 12; display: block; }
  .gi-grid > div { margin-bottom: 1.5rem; }

  /* Utilities overrides */
  .dashboard-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .stats-banners {
    flex-direction: column;
    gap: 1.5rem;
    align-items: flex-start;
    text-align: left;
    margin-top: 1rem;
  }
  
  .tabs-nav {
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 0.5rem;
  }

  .baseline-grid,
  .metrics-grid,
  .modal-grid {
    grid-template-columns: 1fr !important;
  }
  
  .todo-split {
    grid-column: span 12 !important;
  }
  
  .workout-buttons {
    flex-direction: column;
  }
  
  .workout-buttons > button {
    width: 100%;
  }
}