:root {
  --bg: #0b1021;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --primary: #f59e0b;
  --primary-dark: #d97706;
  --line: #e2e8f0;
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--text);
  background: linear-gradient(180deg, #f8fafc 0%, #eef2ff 55%, #f8fafc 100%);
  line-height: 1.6;
}




.app-shell {
  box-sizing: border-box;
}

.dc-card {
  box-sizing: border-box;
}

.split-row > * {
  flex: 1 1 320px;
}

.predict-layout > * {
  flex: 1 1 320px;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 16px 20px;
  margin-bottom: 20px;
  background:
    radial-gradient(circle at 12% 12%, rgba(245, 158, 11, 0.24), transparent 45%),
    radial-gradient(circle at 88% 0%, rgba(59, 130, 246, 0.16), transparent 40%),
    linear-gradient(125deg, #080d1c, #172554 68%, #1e3a8a);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.16);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 240px;
  flex: 1;
}

.logo {
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.2rem;
  display: inline-flex;
  align-items: center;
  gap: 0.1rem;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(4px);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.logo:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(245, 158, 11, 0.22);
  border-color: rgba(245, 158, 11, 0.55);
}

.logo-main {
  letter-spacing: 0.2px;
}

.logo-accent {
  background: linear-gradient(90deg, #f59e0b, #d97706 60%, #fbbf24);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.header-copy {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.header-title {
  color: #f8fafc;
  margin: 0;
  font-size: 17px;
  font-weight: 700;
}

.header-subtitle {
  color: #dbeafe;
  margin: 0;
  font-size: 12px;
}

.header-metrics {
  display: flex;
  align-items: center;
  gap: 10px;
}

.metric-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.04);
}

.metric-icon {
  font-size: 15px;
}

.metric-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.metric-label {
  color: #475569;
  font-size: 10px;
  letter-spacing: 0.6px;
  text-transform: uppercase;
}

.metric-value {
  font-size: 13px;
  font-weight: 700;
}
.app-header .metric-label {
  color: #dbeafe;
}

.app-header .metric-value {
  color: #f8fafc;
}

.metric-value.mae {
  color: #f59e0b;
}

.metric-value.r2 {
  color: #1e3a8a;
}

@media (max-width: 992px) {
  .app-shell {
    padding: 14px 16px !important;
  }

  .app-header {
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-start !important;
    padding: 14px 16px;
  }

  .header-metrics {
    width: 100%;
    flex-wrap: wrap;
  }

  .cross-header {
    flex-wrap: wrap;
    gap: 10px;
  }
}

@media (max-width: 768px) {
  .app-shell {
    padding: 12px !important;
  }

  .dc-card {
    padding: 14px !important;
    border-radius: 10px !important;
  }

  .kpi-grid {
    gap: 10px !important;
  }

  .split-row > *,
  .predict-layout > * {
    min-width: 100% !important;
    flex-basis: 100% !important;
  }

  .header-brand {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .metric-chip {
    flex: 1 1 180px;
  }
}

/* Harmonisation des composants Dash avec la charte claire. */
.dc-card {
  background: rgba(255, 255, 255, 0.94) !important;
  border-color: var(--line) !important;
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.08);
}

.Select-control,
.Select-menu-outer,
.Select-value,
.Select-placeholder {
  background-color: var(--panel) !important;
  color: var(--text) !important;
  border-color: var(--line) !important;
}

.Select-value-label,
.Select-input,
.Select-input input,
.VirtualizedSelectOption {
  color: var(--text) !important;
}

.VirtualizedSelectFocusedOption {
  background-color: #eef2ff !important;
}

.tab,
.tab--selected {
  background-color: var(--panel) !important;
}