[data-theme="dark"] {
    --primary-color: #2980b9;
    --secondary-color: #2c3e50;
    --bg-color: #121212;
    --text-color: #ecf0f1;
    --card-bg: #1e1e1e;
    --border-color: #444;
}

[data-theme="dark"] .navbar {
    background-color: #1a1a1a !important;
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .project-card {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .form-control {
    background-color: #2d2d2d;
    color: #f8f9fa;
    border-color: #444;
}