body {
    background-color: var(--bg);
    color: var(--text);
    transition: background-color 0.3s ease, color 0.3s ease;
}

body.dark-mode {
    --bg: #121212;
    --card: #1e1e1e;
    --text: #e0e0e0;
    --primary: #3b82f6;
    --muted: #a0a0a0;
}