[data-theme="dark"] {
    --header-bg: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(10px);
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea {
    border-color: #444;
}

[data-theme="dark"] .timeline-content,
[data-theme="dark"] .project-card,
[data-theme="dark"] .about-card,
[data-theme="dark"] .experience-item,
[data-theme="dark"] .contact-card,
[data-theme="dark"] .contact-form {
    border: 1px solid #333;
}