:root {
    --dark-bg: #0f0f0f;
    --darker-bg: #050505;
    --card-bg: #1a1a1a;
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border: #2d2d2d;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
}

/* Modern Dark Theme Overrides */
body {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--darker-bg) 100%) !important;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
}

/* Enhanced Sidebar */
.sidebar {
    background: linear-gradient(180deg, var(--card-bg) 0%, rgba(26, 26, 26, 0.95) 100%) !important;
    border-right: 1px solid var(--border);
    backdrop-filter: blur(15px);
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
}

.bg-body-tertiary {
    background-color: transparent !important;
}

/* User Info Card in Sidebar */
.sidebar .rounded-circle {
    border: 3px solid var(--primary);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.3);
    transition: all 0.3s ease;
}

.sidebar .rounded-circle:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}

/* Enhanced Navigation */
.nav-pills .nav-link {
    border-radius: 10px;
    margin: 2px 0;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.nav-pills .nav-link:hover {
    background: rgba(99, 102, 241, 0.15) !important;
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateX(5px);
}

.nav-pills .nav-link.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%) !important;
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

/* Modern Cards */
.card {
    background: var(--card-bg) !important;
    border: 1px solid var(--border) !important;
    border-radius: 16px !important;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3) !important;
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4) !important;
}

/* Enhanced Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%) !important;
    border: none !important;
    border-radius: 10px !important;
    font-weight: 600;
    transition: all 0.3s ease !important;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4) !important;
}

/* Modern Form Controls */
.form-control {
    background: var(--darker-bg) !important;
    border: 1px solid var(--border) !important;
    border-radius: 10px !important;
    color: var(--text-primary) !important;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15) !important;
    transform: translateY(-1px);
}

/* Enhanced Tables */
.table {
    color: var(--text-primary) !important;
    --bs-table-bg: transparent;
    border-radius: 12px;
    overflow: hidden;
}

.table th {
    background: var(--card-bg);
    border-color: var(--border);
    font-weight: 600;
}

.table td {
    border-color: var(--border);
    background: var(--darker-bg);
}

/* Status Indicators */
.text-success { color: var(--success) !important; }
.text-warning { color: var(--warning) !important; }
.text-danger { color: var(--error) !important; }

/* Logo and Headers */
.fs-4 {
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Modern Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--darker-bg);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--border) 0%, var(--text-muted) 100%);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--text-muted) 0%, var(--text-secondary) 100%);
}

/* Content Area Enhancement */
.content {
    background: transparent;
}

/* HR Styling */
hr {
    border-color: var(--border);
    opacity: 0.5;
}

/* Links */
a {
    transition: all 0.3s ease;
}

a:hover {
    opacity: 0.8;
}

/* Micro-Interactions and Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card, .nav-item, .btn {
    animation: fadeInUp 0.6s ease-out;
}

.nav-item:nth-child(1) { animation-delay: 0.1s; }
.nav-item:nth-child(2) { animation-delay: 0.2s; }
.nav-item:nth-child(3) { animation-delay: 0.3s; }
.nav-item:nth-child(4) { animation-delay: 0.4s; }

/* Loading States */
.btn:active {
    transform: translateY(0) !important;
}

/* Responsive Enhancements */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        position: relative;
        min-height: auto;
    }
    .content {
        margin-left: 0;
    }
}

/* Custom utility classes */
.glass-effect {
    background: rgba(26, 26, 26, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.text-gradient {
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}