:root[data-theme="light"] {
    --lavinia-bg: #ffffff;
    --lavinia-fg: #111111;
    --lavinia-accent: #2563eb;
    --lavinia-surface: #f5f5f5;
    --lavinia-border: #e0e0e0;
}

:root[data-theme="dark"] {
    --lavinia-bg: #0b0f14;
    --lavinia-fg: #e5e7eb;
    --lavinia-accent: #60a5fa;
    --lavinia-surface: #1a1a2e;
    --lavinia-border: #2a2a3e;
}

html, body {
    background: var(--lavinia-bg, #ffffff);
    color: var(--lavinia-fg, #111111);
    transition: background-color 0.3s ease, color 0.3s ease;
}