html[data-theme="dark"] {
    --page-bg: #0f1725;
    --surface-primary: rgba(19, 29, 43, 0.8);
    --surface-secondary: rgba(24, 36, 53, 0.92);
    --surface-elevated: rgba(24, 37, 56, 0.98);
    --text-primary: #ebf2ff;
    --text-secondary: #a5b6d1;
    --text-muted: #7e91af;
    --line-soft: rgba(126, 145, 175, 0.16);
    --line-strong: rgba(123, 156, 214, 0.3);
    --accent: #5ca6ff;
    --accent-contrast: #08111d;
    --brand-surface: linear-gradient(135deg, #1f5ea8, #4d93e6);
    --brand-text: #eef5ff;
    --ambient-one: rgba(54, 107, 182, 0.28);
    --ambient-two: rgba(44, 79, 143, 0.22);
    --ambient-three: rgba(59, 97, 163, 0.24);
}