:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --dark-1: #0f172a;
    --dark-2: #1e293b;
    --dark-3: #334155;
    --light: #f8fafc;
    --gray: #94a3b8;
    --gray-dark: #64748b;
}

body.dark-mode {
    font-family: 'Inter', sans-serif;
    color: var(--light);
    background-color: var(--dark-1);
    line-height: 1.6;
}

.navbar {
    padding: 1rem 0;
    border-bottom: 1px solid var(--dark-3);
}

.navbar-brand {
    font-size: 1.5rem;
}

.nav-link {
    color: var(--gray);
    font-weight: 500;
    transition: all 0.3s ease;
}

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

.card {
    border: none;
    border-radius: 12px;
    background-color: var(--dark-2);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 1.5rem;
    border: 1px solid var(--dark-3);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.3);
}

.card-header {
    background-color: var(--dark-2);
    border-bottom: 1px solid var(--dark-3);
    font-weight: 600;
    color: var(--light);
    padding: 1rem 1.5rem;
    border-radius: 12px 12px 0 0 !important;
}

.card-body {
    padding: 1.5rem;
    color: var(--gray);
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    padding: 0.5rem 1.25rem;
    font-weight: 500;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
}

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

.btn-outline-primary:hover {
    background-color: var(--primary);
    border-color: var(--primary);
}

.progress {
    height: 10px;
    border-radius: 5px;
    background-color: var(--dark-3);
}

.progress-bar {
    background-color: var(--primary);
}

.table {
    color: var(--gray);
    background-color: var(--dark-2);
}

.table th {
    font-weight: 600;
    color: var(--light);
    background-color: var(--dark-3);
    border-bottom: 1px solid var(--dark-3);
}

.table td {
    border-top: 1px solid var(--dark-3);
}

.table-hover tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--light);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--light);
}

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

.text-success {
    color: #10b981 !important;
}

.text-danger {
    color: #ef4444 !important;
}

.bg-dark-2 {
    background-color: var(--dark-2);
}

.form-control {
    background-color: var(--dark-3);
    border: 1px solid var(--dark-3);
    color: var(--light);
}

.form-control:focus {
    background-color: var(--dark-3);
    color: var(--light);
    border-color: var(--primary);
    box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.25);
}

.badge {
    font-weight: 500;
    padding: 0.35em 0.65em;
}