:root {
    --epa-yellow: #ffde00;
    --epa-blue: #005cb9;
    --epa-cyan: #00a9e0;
    --success-green: #28a745;
    --warning-orange: #ffc107;
    --danger-red: #dc3545;
    --dark-gray: #343a40;
    --light-gray: #f8f9fa;
    --border-color: #e9ecef;
}

* {
    font-family: 'Inter', sans-serif;
}

body {
    background: #f5f7fa;
    margin: 0;
    padding: 0;
}

.dashboard-container {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.sidebar {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255,255,255,0.2);
    height: 100vh;
    position: fixed;
    width: 280px;
    z-index: 1000;
    box-shadow: 4px 0 20px rgba(0,0,0,0.1);
}

.main-content {
    margin-left: 280px;
    padding: 1.5rem;
}

.header {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 1.25rem 2rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.2);
}

.kpi-card {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 1.25rem;
    border: 1px solid rgba(255,255,255,0.2);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.kpi-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--epa-blue), var(--epa-cyan));
}

.kpi-value {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--dark-gray);
    margin-bottom: 0.5rem;
}

.kpi-label {
    font-size: 0.9rem;
    color: #6c757d;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kpi-change {
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 0.5rem;
}

.kpi-change.positive {
    color: var(--success-green);
}

.kpi-change.negative {
    color: var(--danger-red);
}

.chart-container {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 1rem;
    border: 1px solid rgba(255,255,255,0.2);
    margin-bottom: 1.5rem;
    height: 300px;
    display: flex;
    flex-direction: column;
}

.chart-container h5 {
    margin-bottom: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
}

.chart-container canvas {
    flex: 1;
    max-height: 250px !important;
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.sidebar-menu {
    padding: 1rem 0;
}

.sidebar-item {
    padding: 0.75rem 1.5rem;
    color: #495057;
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.sidebar-item:hover {
    background: rgba(0,92,185,0.1);
    color: var(--epa-blue);
    border-left-color: var(--epa-blue);
    text-decoration: none;
}

.sidebar-item.active {
    background: rgba(0,92,185,0.1);
    color: var(--epa-blue);
    border-left-color: var(--epa-blue);
    font-weight: 600;
}

.sidebar-item i {
    width: 20px;
    margin-right: 0.75rem;
}

.table-modern {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.2);
}

.table-modern th {
    background: rgba(0,92,185,0.1);
    border: none;
    font-weight: 600;
    color: var(--dark-gray);
    padding: 1rem;
}

.table-modern td {
    border: none;
    padding: 1rem;
    vertical-align: middle;
}

.table-modern tbody tr:hover {
    background: rgba(0,92,185,0.05);
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status-active {
    background: rgba(40,167,69,0.1);
    color: var(--success-green);
}

.status-pending {
    background: rgba(255,193,7,0.1);
    color: var(--warning-orange);
}

.status-overdue {
    background: rgba(220,53,69,0.1);
    color: var(--danger-red);
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.chart-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 1200px) {
    .chart-grid {
        grid-template-columns: 1fr;
    }
}

.alert-modern {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 12px;
    border-left: 4px solid var(--warning-orange);
}

.progress-modern {
    height: 8px;
    border-radius: 4px;
    background: rgba(0,0,0,0.1);
    overflow: hidden;
}

.progress-modern .progress-bar {
    border-radius: 4px;
    transition: width 0.6s ease;
}

/* Ajuste del tamaño del gráfico de ventas por tienda */
#salesByStoreChart {
    max-height: 250px !important;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .metric-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-grid {
        grid-template-columns: 1fr;
    }
}