/* ============================================
   UTILITY CLASSES - Helpers
   ============================================ */
.hidden { display: none !important; }
.invisible { visibility: hidden !important; }
.visible { visibility: visible !important; }
.block { display: block !important; }
.inline-block { display: inline-block !important; }
.flex { display: flex !important; }
.inline-flex { display: inline-flex !important; }
.grid { display: grid !important; }
.flex-row { flex-direction: row !important; }
.flex-col { flex-direction: column !important; }
.items-center { align-items: center !important; }
.items-start { align-items: flex-start !important; }
.items-end { align-items: flex-end !important; }
.justify-center { justify-content: center !important; }
.justify-between { justify-content: space-between !important; }
.justify-around { justify-content: space-around !important; }
.gap-sm { gap: var(--spacing-sm) !important; }
.gap-md { gap: var(--spacing-md) !important; }
.gap-lg { gap: var(--spacing-lg) !important; }
.text-center { text-align: center !important; }
.text-left { text-align: left !important; }
.text-right { text-align: right !important; }
.font-bold { font-weight: var(--font-weight-bold) !important; }
.font-semibold { font-weight: var(--font-weight-semibold) !important; }
.font-medium { font-weight: var(--font-weight-medium) !important; }
.m-0 { margin: 0 !important; }
.mt-sm { margin-top: var(--spacing-sm) !important; }
.mt-md { margin-top: var(--spacing-md) !important; }
.mt-lg { margin-top: var(--spacing-lg) !important; }
.mb-sm { margin-bottom: var(--spacing-sm) !important; }
.mb-md { margin-bottom: var(--spacing-md) !important; }
.mb-lg { margin-bottom: var(--spacing-lg) !important; }
.p-0 { padding: 0 !important; }
.p-sm { padding: var(--spacing-sm) !important; }
.p-md { padding: var(--spacing-md) !important; }
.p-lg { padding: var(--spacing-lg) !important; }
.loading { position: relative; pointer-events: none; opacity: 0.6; }
.loading::after { content: ''; position: absolute; top: 50%; left: 50%; width: 20px; height: 20px; margin: -10px 0 0 -10px; border: 2px solid var(--color-gray-300); border-top-color: var(--color-primary); border-radius: 50%; animation: spin 0.6s linear infinite; }
.disabled { opacity: 0.5 !important; pointer-events: none !important; cursor: not-allowed !important; }