/* Small utility classes */

.mt-sm { margin-top: 16px; }
.mt-md { margin-top: 24px; }
.mt-lg { margin-top: 40px; }
.mt-xl { margin-top: 64px; }

.mb-sm { margin-bottom: 16px; }
.mb-md { margin-bottom: 24px; }
.mb-lg { margin-bottom: 40px; }

.hidden { display: none !important; }

.text-center { text-align: center; }

.surface-white { background: var(--bg-warm-white); }
.surface-stone { background: var(--bg-stone); }