:root {
    /* Colors - Light theme */
    --bg: #f8fafc;
    --surface: #ffffff;
    --text: #0f172a;
    --muted: #475569;
    --subtle: #64748b;
    --border: #e2e8f0;
    --primary: #87CEEB;
    --primary-dark: #1E90FF;
    --tint-surface: #f5fbff;
    --tint-bubble: #e6f7ff;
    --tint-border: #dbeafe;

    /* Spacing & Effects */
    --radius: 14px;
    --shadow: 0 6px 18px rgba(2, 6, 23, 0.08);
}

/* Dark Theme */
:root[data-theme="dark"] {
    --bg: #0f172a;
    --surface: #0b1220;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --subtle: #64748b;
    --border: #1f2937;
    --tint-surface: rgba(255, 255, 255, 0.04);
    --tint-bubble: rgba(255, 255, 255, 0.06);
    --tint-border: rgba(255, 255, 255, 0.08);
    --shadow: 0 6px 18px rgba(0, 0, 0, 0.45);
}