:root {
    --bg-dark: #0d1117;
    --bg-card: #161b22;
    --bg-card-hover: #1c2128;
    --border-color: #30363d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --accent-blue: #58a6ff;
    --accent-green: #3fb950;
    --accent-red: #f85149;
    --accent-yellow: #d29922;
    --accent-purple: #a371f7;
    --accent-cyan: #39c5cf;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-blue: linear-gradient(135deg, #0077b6 0%, #00b4d8 100%);
    --gradient-green: linear-gradient(135deg, #2d6a4f 0%, #40916c 100%);
    --gradient-red: linear-gradient(135deg, #9d0208 0%, #dc2f02 100%);
    --gradient-gold: linear-gradient(135deg, #b08968 0%, #ddb892 100%);
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    --card-hover-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
    --glow-blue: 0 0 20px rgba(88, 166, 255, 0.3);
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

.navbar {
    background: linear-gradient(90deg, #1a1a2e 0%, #16213e 100%) !important;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
    border-bottom: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.navbar-brand img {
    height: 36px;
    width: auto;
}

.company-name {
    color: var(--accent-cyan);
    font-weight: 300;
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f0f1a 100%);
    padding: 20px;
}

.login-card {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 420px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header i {
    font-size: 3rem;
    color: var(--accent-cyan);
}

.login-header h2 {
    margin: 10px 0 5px;
    color: var(--text-primary);
}

.login-header p {
    color: var(--text-secondary);
    margin: 0;
}

.demo-credentials {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.credential-item {
    background: var(--bg-dark);
    padding: 10px;
    border-radius: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.kpi-card {
    border-radius: 16px;
    padding: 24px;
    display: flex;
    align-items: center;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
}

.kpi-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-hover-shadow), var(--glow-blue);
}

.kpi-card.bg-primary {
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%) !important;
}

.kpi-card.bg-success {
    background: linear-gradient(135deg, #14532d 0%, #22c55e 100%) !important;
}

.kpi-card.bg-info {
    background: linear-gradient(135deg, #164e63 0%, #06b6d4 100%) !important;
}

.kpi-card.bg-warning {
    background: linear-gradient(135deg, #713f12 0%, #eab308 100%) !important;
}

.kpi-card.bg-danger {
    background: linear-gradient(135deg, #7f1d1d 0%, #ef4444 100%) !important;
}

.kpi-label {
    margin: 0;
    font-size: 0.8rem;
    opacity: 0.85;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

.kpi-value {
    margin: 8px 0 0;
    font-weight: 700;
    font-size: 1.75rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.kpi-content {
    text-align: center;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.card:hover {
    box-shadow: var(--card-hover-shadow);
    border-color: rgba(88, 166, 255, 0.3);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 16px 20px;
}

.card-header h5 {
    color: var(--text-primary);
    font-weight: 600;
    margin: 0;
}

.card-header h5 i {
    color: var(--accent-cyan);
}

.card-body {
    padding: 20px;
}

.table {
    margin-bottom: 0;
    color: var(--text-primary);
}

.table th {
    border-top: none;
    border-bottom: 1px solid var(--border-color) !important;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 1px;
    padding: 12px 16px;
    background: transparent;
}

.table td {
    border-bottom: 1px solid var(--border-color);
    padding: 12px 16px;
    vertical-align: middle;
}

.table tbody tr {
    transition: background 0.2s ease;
}

.table tbody tr:hover {
    background: var(--bg-card-hover);
}

.table-hover tbody tr:hover {
    background: var(--bg-card-hover);
}

.sortable {
    cursor: pointer;
}

.sortable:hover {
    background-color: var(--bg-card-hover);
}

.sortable::after {
    content: '';
    display: inline-block;
    margin-left: 4px;
    opacity: 0.3;
}

.sortable.sort-asc::after {
    content: '\25B2';
    opacity: 1;
    color: var(--accent-cyan);
}

.sortable.sort-desc::after {
    content: '\25BC';
    opacity: 1;
    color: var(--accent-cyan);
}

.badge {
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.list-group {
    background: transparent;
}

.list-group-item {
    background: transparent;
    border-left: none;
    border-right: none;
    border-color: var(--border-color);
    color: var(--text-primary);
    padding: 12px 16px;
}

.list-group-item:first-child {
    border-top: none;
}

.list-group-item:hover {
    background: var(--bg-card-hover);
}

.progress {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    height: 8px;
}

.progress-bar {
    border-radius: 4px;
}

.btn-primary {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    border: none;
    font-weight: 500;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #4338ca 0%, #6d28d9 100%);
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.4);
}

.btn-outline-secondary {
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.btn-outline-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.form-control,
.form-select {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.form-control:focus,
.form-select:focus {
    background-color: var(--bg-dark);
    border-color: var(--accent-cyan);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(57, 197, 207, 0.25);
}

.form-select option {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

.input-group-text {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.dropdown-menu {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
}

.dropdown-item {
    color: var(--text-primary);
}

.dropdown-item:hover {
    background-color: var(--bg-card-hover);
    color: var(--accent-cyan);
}

.alert {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-card);
}

.text-muted {
    color: var(--text-secondary) !important;
}

.nav-link {
    color: var(--text-secondary);
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link.dropdown-toggle {
    color: var(--text-primary);
}

h2#dateRange {
    color: var(--text-primary);
    font-weight: 300;
    letter-spacing: 1px;
}

canvas {
    max-width: 100%;
}

@media (max-width: 768px) {
    .kpi-card {
        padding: 16px;
    }
    
    .kpi-value {
        font-size: 1.4rem;
    }
    
    .navbar-brand img {
        height: 28px;
    }
    
    .company-name {
        font-size: 0.75rem;
    }
}

@media (min-width: 1200px) {
    .kpi-content {
        text-align: left;
    }
}

.text-success {
    color: var(--accent-green) !important;
}

.text-warning {
    color: var(--accent-yellow) !important;
}

.text-danger {
    color: var(--accent-red) !important;
}

.bg-light,
.table-light {
    background-color: var(--bg-card) !important;
}

.table-light th {
    background-color: transparent !important;
    color: var(--text-secondary) !important;
}

.text-primary {
    color: var(--accent-blue) !important;
}

.nav-tab {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    margin-right: 0.5rem;
    transition: all 0.2s ease;
}

.nav-tab:hover {
    background: rgba(255, 255, 255, 0.1);
}

.nav-tab.active {
    background: rgba(57, 197, 207, 0.2);
    color: var(--accent-cyan) !important;
}

.kpi-card {
    padding: 16px;
}

.kpi-value {
    font-size: 1.5rem;
}

.kpi-label {
    font-size: 0.7rem;
}

.card-header {
    padding: 12px 16px;
}

.card-body {
    padding: 12px 16px;
}

.table td, .table th {
    padding: 8px 12px;
}

.table-sm td, .table-sm th {
    padding: 6px 10px;
    font-size: 0.85rem;
}

.list-group-item {
    padding: 8px 12px;
}

main.py-4 {
    padding-top: 1rem !important;
    padding-bottom: 1rem !important;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c2c7;
    color: #842029;
}

.alert-success {
    background-color: #d1e7dd;
    border-color: #badbcc;
    color: #0f5132;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffecb5;
    color: #664d03;
}

.alert-info {
    background-color: #cff4fc;
    border-color: #b6effb;
    color: #055160;
}