:root {
    --primary-bg: #0f1419;
    --secondary-bg: #1a1f2e;
    --card-bg: #1e2535;
    --accent-bg: #2a3142;
    --text-primary: #ffffff;
    --text-secondary: #a0a9c0;
    --text-muted: #6c7293;
    --border-color: #2d3748;
    --primary-color: #4f46e5;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--accent-bg) var(--secondary-bg);
}

*::-webkit-scrollbar {
    width: 8px;
}

*::-webkit-scrollbar-track {
    background: var(--secondary-bg);
}

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

*::-webkit-scrollbar-thumb:hover {
    background: var(--border-color);
}

body {
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--secondary-bg) 100%);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
}

/* Navigation */
.navbar {
    background: var(--card-bg) !important;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-primary) !important;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand::before {
    content: "📊";
    font-size: 1.8rem;
}

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

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* Cards */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

.card-body h3 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-body h6 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0;
    color: var(--text-primary);
}

/* Tabs */
.nav-tabs {
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 2rem;
}

.nav-tabs .nav-link {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-weight: 600;
    padding: 1rem 1.5rem;
    border-radius: 8px 8px 0 0;
    transition: all 0.2s ease;
}

.nav-tabs .nav-link:hover {
    background: var(--accent-bg);
    color: var(--text-secondary);
    border: none;
}

.nav-tabs .nav-link.active {
    background: var(--primary-color);
    color: white;
    border: none;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

/* Status Colors */
.text-primary { color: var(--primary-color) !important; }
.text-success { color: var(--success-color) !important; }
.text-info { color: var(--info-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-danger { color: var(--danger-color) !important; }
.text-muted { color: var(--text-muted) !important; }

/* Buttons */
.btn {
    border-radius: 8px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: all 0.2s ease;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #6366f1 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(79, 70, 229, 0.4);
    background: linear-gradient(135deg, #6366f1 0%, var(--primary-color) 100%);
}

/* Forms */
.form-control, .form-select {
    background: var(--accent-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus {
    background: var(--accent-bg);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    color: var(--text-primary);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-label {
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* Alerts */
.alert {
    border: none;
    border-radius: 10px;
    padding: 1rem 1.25rem;
    border-left: 4px solid;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
    border-left-color: var(--warning-color);
}

/* Badges */
.badge {
    border-radius: 6px;
    font-weight: 600;
    padding: 0.5rem 0.75rem;
}

.bg-primary {
    background: var(--primary-color) !important;
}

/* Charts */
canvas {
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.02) !important;
}

/* Role frequency styling */
#ww-role-frequency .d-flex {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

#ww-role-frequency .d-flex:last-child {
    border-bottom: none;
}

/* Metric cards with icons */
.card-body.text-center {
    position: relative;
}

.card-body.text-center::before {
    content: attr(data-icon);
    font-size: 2rem;
    position: absolute;
    top: 1rem;
    right: 1rem;
    opacity: 0.3;
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .card-body h3 {
        font-size: 1.75rem;
    }
    
    .nav-tabs .nav-link {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }
}

/* Status indicators */
.status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 0.5rem;
}

.status-online { background: var(--success-color); }
.status-offline { background: var(--danger-color); }
.status-warning { background: var(--warning-color); }

/* Animated elements */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

/* Custom scrollbar for specific elements */
.card-body {
    scrollbar-width: thin;
    scrollbar-color: var(--accent-bg) transparent;
}

/* Hover effects for metric cards */
.card:hover .card-title {
    color: var(--text-primary);
}

.card:hover .card-body h3 {
    transform: scale(1.05);
    transition: transform 0.2s ease;
}