/* ===================================
   工具類別 (Utility Classes)
   =================================== */

/* === Display & Visibility === */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-inline { display: inline !important; }
.d-inline-block { display: inline-block !important; }
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }
.d-grid { display: grid !important; }

.visible { visibility: visible !important; }
.invisible { visibility: hidden !important; }

.opacity-0 { opacity: 0 !important; }
.opacity-50 { opacity: 0.5 !important; }
.opacity-100 { opacity: 1 !important; }

.pointer-events-none { pointer-events: none !important; }
.pointer-events-auto { pointer-events: auto !important; }

.overflow-hidden { overflow: hidden !important; }
.overflow-auto { overflow: auto !important; }
.overflow-scroll { overflow: scroll !important; }

/* === Spacing === */
.m-0 { margin: 0 !important; }
.mt-1 { margin-top: 8px !important; }
.mt-2 { margin-top: 12px !important; }
.mt-3 { margin-top: 16px !important; }
.mb-1 { margin-bottom: 8px !important; }
.mb-2 { margin-bottom: 12px !important; }
.mb-3 { margin-bottom: 16px !important; }
.mb-4 { margin-bottom: 20px !important; }

.p-0 { padding: 0 !important; }
.p-1 { padding: 8px !important; }
.p-2 { padding: 12px !important; }
.p-3 { padding: 16px !important; }
.p-4 { padding: 20px !important; }

/* === Flexbox === */
.flex-row { flex-direction: row !important; }
.flex-column { flex-direction: column !important; }
.justify-center { justify-content: center !important; }
.justify-between { justify-content: space-between !important; }
.align-center { align-items: center !important; }
.align-end { align-items: flex-end !important; }
.gap-1 { gap: 8px !important; }
.gap-2 { gap: 12px !important; }
.gap-3 { gap: 16px !important; }

/* === Text & Font === */
.text-center { text-align: center !important; }
.text-left { text-align: left !important; }
.text-right { text-align: right !important; }

.font-weight-normal { font-weight: 400 !important; }
.font-weight-medium { font-weight: 500 !important; }
.font-weight-semibold { font-weight: 600 !important; }
.font-weight-bold { font-weight: 700 !important; }

.font-small { font-size: 14px; }
.font-medium { font-size: 16px; }
.font-large { font-size: 18px; }

/* === Colors === */
.text-primary { color: var(--primary-color) !important; }
.text-success { color: var(--success-color) !important; }
.text-danger { color: var(--error-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-muted { color: var(--text-muted) !important; }

/* === Sizing === */
.w-100 { width: 100% !important; }
.h-100 { height: 100% !important; }
.max-w-100 { max-width: 100% !important; }
.max-h-400 { max-height: 400px !important; }

/* === Borders & Radius === */
.rounded { border-radius: 6px !important; }
.rounded-lg { border-radius: 8px !important; }
.rounded-xl { border-radius: 12px !important; }