:root {
    --primary-color: #1a2332;
    --secondary-color: #2c3e50;
    --accent-color: #3498db;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --text-primary: #ecf0f1;
    --text-secondary: #bdc3c7;
    --background-dark: #0f1419;
    --background-light: #1e2838;
    --card-background: rgba(30, 40, 56, 0.95);
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-dark: 0 4px 20px rgba(0, 0, 0, 0.4);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--background-dark) 0%, var(--primary-color) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    font-size: 14px;
    line-height: 1.5;
}

/* Header Styles */
.dashboard-header {
    background: var(--card-background);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-section h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-color), #5dade2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success-color);
    animation: pulse 2s infinite;
}

.status-indicator.live {
    box-shadow: 0 0 10px var(--success-color);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.live-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--success-color);
    letter-spacing: 0.5px;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.language-toggle {
    display: flex;
    background: var(--background-light);
    border-radius: 6px;
    padding: 2px;
}

.lang-btn {
    background: none;
    border: none;
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.lang-btn.active {
    background: var(--accent-color);
    color: white;
}

.timestamp {
    font-family: 'Monaco', 'Consolas', monospace;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Main Dashboard Layout */
.dashboard-main {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto auto;
    gap: 1.5rem;
    grid-template-areas: 
        "kpi kpi"
        "map charts"
        "table inventory";
}

/* Panel Base Styles */
.kpi-panel, .map-panel, .charts-panel, .table-panel, .inventory-panel {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-dark);
}

.kpi-panel { grid-area: kpi; }
.map-panel { grid-area: map; }
.charts-panel { grid-area: charts; }
.table-panel { grid-area: table; }
.inventory-panel { grid-area: inventory; }

.kpi-panel h2, .map-panel h2, .charts-panel h2, .table-panel h2, .inventory-panel h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

/* KPI Cards */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.kpi-card {
    background: var(--background-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    position: relative;
    transition: var(--transition-smooth);
}

.kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.kpi-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.kpi-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.kpi-trend {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.kpi-trend.up {
    background: rgba(39, 174, 96, 0.2);
    color: var(--success-color);
}

.kpi-trend.down {
    background: rgba(231, 76, 60, 0.2);
    color: var(--danger-color);
}

/* Map Styles */
.map-container {
    height: 400px;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.map-legend {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.legend-color.delivery { background: var(--accent-color); }
.legend-color.warehouse { background: var(--warning-color); }
.legend-color.maintenance { background: var(--danger-color); }

/* Chart Styles */
.chart-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tab-btn {
    background: var(--background-light);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: var(--transition-smooth);
}

.tab-btn.active {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.chart-container {
    height: 300px;
    position: relative;
}

/* Table Styles */
.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.table-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
}

#search-input {
    background: var(--background-light);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    width: 200px;
}

#status-filter {
    background: var(--background-light);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
}

.table-wrapper {
    overflow-x: auto;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

#shipments-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--background-light);
}

#shipments-table th {
    background: var(--primary-color);
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    user-select: none;
    transition: var(--transition-smooth);
}

#shipments-table th:hover {
    background: var(--secondary-color);
}

#shipments-table th.sortable::after {
    content: '↕';
    margin-left: 0.5rem;
    opacity: 0.5;
}

#shipments-table td {
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-in-transit { background: rgba(52, 152, 219, 0.2); color: var(--accent-color); }
.status-delivered { background: rgba(39, 174, 96, 0.2); color: var(--success-color); }
.status-delayed { background: rgba(231, 76, 60, 0.2); color: var(--danger-color); }

.priority-high { color: var(--danger-color); font-weight: 600; }
.priority-medium { color: var(--warning-color); font-weight: 600; }
.priority-low { color: var(--text-secondary); }

/* Warehouse Styles */
.warehouse-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.warehouse-card {
    background: var(--background-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: var(--transition-smooth);
}

.warehouse-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.warehouse-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.warehouse-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.capacity-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.capacity-bar {
    width: 80px;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
}

.capacity-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success-color), var(--warning-color));
    transition: width 0.5s ease;
}

.warehouse-stats {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
        grid-template-areas: 
            "kpi"
            "map"
            "charts"
            "table"
            "inventory";
    }
}

@media (max-width: 768px) {
    .dashboard-main {
        padding: 1rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .table-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    #search-input {
        width: 100%;
    }
    
    .warehouse-grid {
        grid-template-columns: 1fr;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background-dark);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #5dade2;
}

/* Loading Animation */
.loading {
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}