/* Spacing utilities */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-5 { margin-top: 1.25rem; }
.mt-6 { margin-top: 1.5rem; }
.pt-6 { padding-top: 1.5rem; }
.pb-6 { padding-bottom: 1.5rem; }

/* Text utilities */
.text-muted { color: var(--text-secondary); }
.text-center { text-align: center; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace; }

/* Shadow utilities */
.shadow-sm { box-shadow: 0 1px 2px rgba(0,0,0,.2); }
.shadow-md { box-shadow: 0 6px 20px rgba(0,0,0,.25); }
.shadow-lg { box-shadow: 0 10px 30px rgba(0,0,0,.3); }