body { background: #f0f2f5; font-family: 'Segoe UI', system-ui, sans-serif; }

.header-bar {
    background: linear-gradient(135deg, #003399 0%, #0050cc 100%);
    color: white;
    padding: 1rem 2rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.header-bar h1 { font-size: 1.4rem; margin: 0; letter-spacing: 0.03em; }

.nav-tabs .nav-link { color: #444; font-weight: 500; }
.nav-tabs .nav-link.active { color: #003399; font-weight: 700; border-bottom: 3px solid #003399; }

.card { border: none; box-shadow: 0 1px 4px rgba(0,0,0,0.1); border-radius: 8px; }
.card-header { background: white; border-bottom: 1px solid #eee; font-size: 0.95rem; border-radius: 8px 8px 0 0 !important; }

.chart-wrap { position: relative; }

.heatmap-cell {
    width: 72px; min-width: 72px;
    height: 56px;
    text-align: center;
    vertical-align: middle;
    font-size: 0.78rem;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0,0,0,0.4);
    cursor: default;
}
.heatmap-header {
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

.party-badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    color: white;
    font-size: 0.78rem;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

#loading-overlay {
    position: fixed; inset: 0;
    background: rgba(255,255,255,0.85);
    z-index: 9999;
    display: flex; align-items: center; justify-content: center;
    flex-direction: column; gap: 1rem;
    font-size: 1.1rem; color: #003399;
}
.spinner-border { width: 3rem; height: 3rem; border-width: 4px; }

.stat-badge {
    background: #e8f0fe;
    color: #1a56d6;
    border-radius: 20px;
    padding: 0.2rem 0.7rem;
    font-size: 0.82rem;
    font-weight: 600;
}

.header-logo {
    width: 30px;
    height: 30px;
    object-fit: contain;
    border-radius: 4px;
}