/* LiteUI v1.1.0 */

/* Nunito Font + Noto Sans SC (中文) */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;500;600;700;800;900&family=Noto+Sans+SC:wght@400;500;600;700;800;900&display=swap');

:root {
  
  --ui-primary: #6366f1;
  --ui-primary-hover: #4f46e5;

  --ui-success: #10b981;
  --ui-error: #ef4444;
  --ui-warning: #f59e0b;

  --ui-bg: #f1f5f9;           /* slate-100 */
  --ui-bg-card: #ffffff;
  --ui-bg-input: #f8fafc;     /* slate-50 */
  --ui-border: #f1f5f9;       /* slate-100 */
  --ui-border-dark: #e2e8f0;  /* slate-200 */
  --ui-text: #475569;         /* slate-600 */
  --ui-text-dark: #1e293b;    /* slate-800 */
  --ui-text-light: #94a3b8;   /* slate-400 */
  --ui-text-muted: #64748b;   /* slate-500 */

  --ui-font: 'Nunito', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --ui-shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.02), 0 2px 4px -1px rgba(0, 0, 0, 0.02);
  --ui-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);

  --ui-transition: all 0.2s ease;
  --ui-transition-colors: color 0.3s, background-color 0.3s, border-color 0.3s;
}

.dark {
  --ui-bg: #0f172a;           /* slate-900 */
  --ui-bg-card: #1e293b;      /* slate-800 */
  --ui-bg-input: #0f172a;     /* slate-900 */
  --ui-border: #334155;       /* slate-700 */
  --ui-border-dark: #334155;
  --ui-text: #cbd5e1;         /* slate-300 */
  --ui-text-dark: #ffffff;
  --ui-text-light: #64748b;   /* slate-500 */
  --ui-text-muted: #94a3b8;   /* slate-400 */
}


*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  font-family: var(--ui-font);
}

body {
  margin: 0;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}


/* 全局滚动条样式 - 方角设计 */
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
  border-radius: 0;
}

.dark ::-webkit-scrollbar-track {
  background: #1e293b;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 0 !important;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

.dark ::-webkit-scrollbar-thumb {
  background: #475569;
}

.dark ::-webkit-scrollbar-thumb:hover {
  background: #64748b;
}

/* 禁用滚动条上下按钮 */
::-webkit-scrollbar-button {
  display: none;
  height: 0;
  width: 0;
}

/* Firefox 滚动条样式 */
* {
  scrollbar-width: thin;
  scrollbar-color: #cbd5e1 #f1f5f9;
}

.dark * {
  scrollbar-color: #475569 #1e293b;
}

.ui-base {
  font-family: var(--ui-font);
  color: var(--ui-text);
  background-color: var(--ui-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

/* Navbar / ?
   : fixed top-0 bg-white/80 backdrop-blur-md border-b h-16
 */
.ui-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: 4rem;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ui-border);
  transition: var(--ui-transition-colors);
}

.dark .ui-navbar {
  background: rgba(15, 23, 42, 0.8);
  border-color: #1e293b;
}

.ui-navbar-inner {
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 1rem;
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Logo: flex items-center space-x-2 */
.ui-navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  cursor: pointer;
}

.ui-navbar-brand img {
  width: 2rem;
  height: 2rem;
  border-radius: 0.5rem;
  box-shadow: var(--ui-shadow-lg);
}

.ui-navbar-brand span {
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--ui-text-dark);
  letter-spacing: -0.025em;
}

/* ? bg-slate-100/50 p-1 rounded-full */
.ui-nav-pills {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: rgba(241, 245, 249, 0.5);
  padding: 0.25rem;
  border-radius: 9999px;
}

.dark .ui-nav-pills {
  background: rgba(30, 41, 59, 0.5);
}

/* : px-5 py-1.5 rounded-full text-sm font-bold */
.ui-nav-link {
  padding: 0.375rem 1.25rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ui-text-muted);
  text-decoration: none;
  transition: var(--ui-transition);
}

.ui-nav-link:hover {
  color: var(--ui-primary);
}

/* ? bg-white text-primary shadow-sm */
.ui-nav-link.active {
  background: var(--ui-bg-card);
  color: var(--ui-primary);
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
}

.dark .ui-nav-link.active {
  background: #334155;
}

/* ? w-px h-6 bg-slate-200/70 mx-1 */
.ui-divider-v {
  width: 1px;
  height: 1.5rem;
  background: rgba(226, 232, 240, 0.7);
  margin: 0 0.25rem;
}

.dark .ui-divider-v {
  background: #334155;
}

/* Buttons / 
   : px-3 py-2 rounded-lg text-sm font-bold transition-colors
 */

.ui-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: 0.5rem;
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  white-space: nowrap;
  font-family: var(--ui-font);
}

.ui-btn:hover:not(:disabled) {
  transform: translateY(-1px);
}

.ui-btn:active:not(:disabled) {
  transform: translateY(0) scale(0.98);
}

.ui-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* : bg-primary text-white hover:bg-primary-hover */
.ui-btn-primary {
  background: var(--ui-primary);
  color: white;
  box-shadow: 0 2px 0 rgba(0,0,0,0.1);
}

.ui-btn-primary:hover:not(:disabled) {
  background: var(--ui-primary-hover);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

/* : bg-slate-100 text-slate-700 hover:bg-slate-200 */
.ui-btn-secondary {
  background: #f1f5f9;
  color: #334155;
}

.dark .ui-btn-secondary {
  background: #334155;
  color: #f1f5f9;
}

.ui-btn-secondary:hover:not(:disabled) {
  background: #e2e8f0;
}

.dark .ui-btn-secondary:hover:not(:disabled) {
  background: #475569;
}

/* : text-slate-600 hover:bg-slate-100 */
.ui-btn-ghost {
  background: transparent;
  color: var(--ui-text);
}

.ui-btn-ghost:hover:not(:disabled) {
  background: #f1f5f9;
}

.dark .ui-btn-ghost:hover:not(:disabled) {
  background: #1e293b;
}

/* : bg-red-500 text-white hover:bg-red-600 */
.ui-btn-danger {
  background: #ef4444;
  color: white;
  box-shadow: 0 2px 0 rgba(0,0,0,0.1);
}

.ui-btn-danger:hover:not(:disabled) {
  background: #dc2626;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

/* : bg-green-500 */
.ui-btn-success {
  background: #22c55e;
  color: white;
  box-shadow: 0 2px 0 rgba(0,0,0,0.1);
}

.ui-btn-success:hover:not(:disabled) {
  background: #16a34a;
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.4);
}

/* ?(): w-full py-4 rounded-xl text-lg shadow-lg hover:-translate-y-0.5 */
.ui-btn-lg {
  width: 100%;
  padding: 1rem;
  font-size: 1.125rem;
  border-radius: 0.75rem;
  box-shadow: var(--ui-shadow-lg);
}

.ui-btn-lg:hover:not(:disabled) {
  transform: translateY(-2px);
}

.ui-btn-lg:active:not(:disabled) {
  transform: translateY(0);
}

/* : w-9 h-9 rounded-full bg-slate-50 */
.ui-btn-icon {
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border-radius: 9999px;
  background: #f8fafc;
  color: var(--ui-text-light);
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.ui-btn-icon svg {
  width: 1.125rem;
  height: 1.125rem;
}

.dark .ui-btn-icon {
  background: #1e293b;
}

.ui-btn-icon:hover:not(:disabled) {
  background: #e2e8f0;
  color: var(--ui-text-dark);
}

.dark .ui-btn-icon:hover:not(:disabled) {
  background: #334155;
  color: #f1f5f9;
}

/* Cards / 
   : bg-white p-8 rounded-[2rem] border border-slate-100 shadow-card
 */
.ui-card {
  background: var(--ui-bg-card);
  padding: 2rem;
  border-radius: 2rem;
  border: 1px solid var(--ui-border);
  box-shadow: var(--ui-shadow-card);
  transition: all 0.2s ease;
}

.ui-card:hover {
  box-shadow: 0 8px 24px -4px rgba(0, 0, 0, 0.08);
}

.dark .ui-card:hover {
  box-shadow: 0 8px 24px -4px rgba(0, 0, 0, 0.3);
}

/* ? p-4 rounded-2xl */
.ui-card-sm {
  padding: 1rem;
  border-radius: 1rem;
}

/* ? bg-white/80 backdrop-blur-md */
.ui-card-blur {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.dark .ui-card-blur {
  background: rgba(30, 41, 59, 0.6);
}

/* : text-2xl font-extrabold text-slate-800 mb-2 */
.ui-card-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--ui-text-dark);
  margin: 0 0 0.5rem 0;
}

/* ? text-sm font-medium text-slate-500 mb-6 */
.ui-card-subtitle {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ui-text-muted);
  margin: 0 0 1.5rem 0;
}

/* : w-9 h-9 rounded-xl bg-primary/10 text-primary */
.ui-card-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.75rem;
  background: rgba(99, 102, 241, 0.1);
  color: var(--ui-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  flex-shrink: 0;
}



/* : text-xs font-bold text-slate-400 uppercase tracking-wide mb-2 ml-1 */
.ui-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ui-text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  margin-left: 0.25rem;
}

/* ? bg-slate-50 border-2 border-transparent focus:bg-white focus:border-primary focus:ring-4 focus:ring-primary/10 rounded-xl px-4 py-3 font-bold */
.ui-input {
  width: 100%;
  box-sizing: border-box;
  background: var(--ui-bg-input);
  border: 2px solid transparent;
  border-radius: 0.75rem;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  font-weight: 700;
  font-family: var(--ui-font);
  color: var(--ui-text-dark);
  outline: none;
  transition: var(--ui-transition);
}

.ui-input::placeholder {
  color: var(--ui-text-light);
}

.dark .ui-input::placeholder {
  color: #475569;
}

.ui-input:focus {
  background: var(--ui-bg-card);
  border-color: var(--ui-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

.ui-input-group {
  position: relative;
}

/* ? absolute left-0 pl-4 text-slate-400 */
.ui-input-icon {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  padding-left: 1rem;
  display: flex;
  align-items: center;
  pointer-events: none;
  color: var(--ui-text-light);
}

.ui-input-icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* ? pl-11 */
.ui-input-group .ui-input {
  padding-left: 2.75rem;
}

.ui-textarea {
  min-height: 6rem;
  resize: vertical;
}

/* : inline-flex items-center gap-2 */
.ui-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ui-text);
}

.ui-checkbox input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--ui-primary);
  cursor: pointer;
}

/* : space-y-5 */
.ui-form-group {
  margin-bottom: 1.25rem;
}

/* Alert / ?
   : p-4 rounded-xl text-sm font-bold shadow-sm
 */
.ui-alert {
  padding: 1rem;
  border-radius: 0.75rem;
  font-size: 0.875rem;
  font-weight: 700;
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
}

/* : bg-emerald-50 text-emerald-700 */
.ui-alert-success {
  background: #ecfdf5;
  color: #047857;
}

.dark .ui-alert-success {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
}

/* : bg-red-50 text-red-700 */
.ui-alert-error {
  background: #fef2f2;
  color: #b91c1c;
}

.dark .ui-alert-error {
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
}

.ui-alert-warning {
  background: #fffbeb;
  color: #b45309;
}

.dark .ui-alert-warning {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
}

/* : bg-primary/10 */
.ui-alert-info {
  background: rgba(99, 102, 241, 0.1);
  color: #4338ca;
}

.dark .ui-alert-info {
  background: rgba(99, 102, 241, 0.2);
  color: #a5b4fc;
}

/* : flex items-start */
.ui-alert-content {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.ui-alert-icon {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
}

.ui-alert-title {
  font-size: 1rem;
  font-weight: 900;
  margin: 0 0 0.25rem 0;
}

.ui-alert-text {
  font-size: 0.75rem;
  opacity: 0.9;
  margin: 0;
}

/* Badge / 
   : px-3 py-1 rounded-full text-xs font-bold
 */
.ui-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 9999px;
  white-space: nowrap;
}

/* bg-primary/10 text-primary */
.ui-badge-primary {
  background: rgba(99, 102, 241, 0.1);
  color: var(--ui-primary);
}

/* bg-slate-100 text-slate-600 */
.ui-badge-secondary {
  background: #f1f5f9;
  color: #475569;
}

.dark .ui-badge-secondary {
  background: #334155;
  color: #cbd5e1;
}

/* bg-emerald-50 text-emerald-600 */
.ui-badge-success {
  background: #ecfdf5;
  color: #059669;
}

.dark .ui-badge-success {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
}

/* bg-red-50 text-red-600 */
.ui-badge-error {
  background: #fef2f2;
  color: #dc2626;
}

.dark .ui-badge-error {
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
}

/* Stat Card / 
   : bg-slate-50 p-3 rounded-xl
 */
.ui-stat {
  background: #f8fafc;
  padding: 0.75rem;
  border-radius: 0.75rem;
  text-align: center;
}

.dark .ui-stat {
  background: rgba(15, 23, 42, 0.5);
}

/* text-3xl font-black */
.ui-stat-value {
  font-size: 1.875rem;
  font-weight: 900;
  color: var(--ui-text-dark);
}

.ui-stat-value.primary { color: var(--ui-primary); }
.ui-stat-value.success { color: #10b981; }
.ui-stat-value.error { color: #ef4444; }

/* text-xs font-bold text-slate-400 uppercase */
.ui-stat-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ui-text-light);
  text-transform: uppercase;
}

/* Progress / ?
   : h-2.5 bg-slate-100 rounded-full
 */
.ui-progress {
  height: 0.625rem;
  background: #f1f5f9;
  border-radius: 9999px;
  overflow: hidden;
}

.dark .ui-progress {
  background: #334155;
}

.ui-progress-bar {
  height: 100%;
  border-radius: 9999px;
  background: var(--ui-primary);
  transition: width 1s ease-out;
  position: relative;
}

.ui-progress-bar::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(255,255,255,0.2), transparent);
}

.ui-progress-bar.success { background: #10b981; }
.ui-progress-bar.warning { background: #f59e0b; }
.ui-progress-bar.error { background: #ef4444; }

/* Pagination / 
   : w-10 h-10 rounded-xl border-2
 */
.ui-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.ui-page-btn {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.75rem;
  background: var(--ui-bg-card);
  border: 2px solid #e2e8f0;
  color: var(--ui-text-muted);
  font-weight: 700;
  font-size: 0.875rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--ui-transition);
  font-family: var(--ui-font);
}

.dark .ui-page-btn {
  border-color: #334155;
}

.ui-page-btn:hover:not(:disabled):not(.active) {
  border-color: var(--ui-primary);
  color: var(--ui-primary);
  transform: translateY(-1px);
}

/* ? bg-primary text-white border-primary */
.ui-page-btn.active {
  background: var(--ui-primary);
  border-color: var(--ui-primary);
  color: white;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.35);
}

.ui-page-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ? text-slate-400 font-bold px-2 */
.ui-page-ellipsis {
  color: var(--ui-text-light);
  font-weight: 700;
  padding: 0 0.5rem;
}

/* Modal / 
   : fixed inset-0 bg-black/50 backdrop-blur-sm z-50 flex items-center justify-center p-4
 */
.ui-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

/* : bg-white rounded-[2rem] shadow-2xl max-w-sm w-full p-8 relative */
.ui-modal {
  background: var(--ui-bg-card);
  border-radius: 2rem;
  box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  width: 100%;
  max-width: 24rem;
  padding: 2rem;
  position: relative;
  transition: var(--ui-transition-colors);
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.ui-modal-lg { max-width: 28rem; }  /* max-w-md */
.ui-modal-xl { max-width: 32rem; }  /* max-w-lg */

/* : w-16 h-16 rounded-full bg-red-50 flex items-center justify-center mx-auto mb-4 */
.ui-modal-icon {
  width: 4rem;
  height: 4rem;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

.ui-modal-icon svg {
  width: 2rem;
  height: 2rem;
}

.ui-modal-icon.danger {
  background: #fef2f2;
  color: #ef4444;
}

.dark .ui-modal-icon.danger {
  background: rgba(239, 68, 68, 0.3);
}

.ui-modal-icon.warning {
  background: #fffbeb;
  color: #f59e0b;
}

.dark .ui-modal-icon.warning {
  background: rgba(245, 158, 11, 0.3);
}

.ui-modal-icon.success {
  background: #ecfdf5;
  color: #10b981;
}

.dark .ui-modal-icon.success {
  background: rgba(16, 185, 129, 0.3);
}

/* : text-xl font-black text-slate-800 mb-2 text-center */
.ui-modal-title {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--ui-text-dark);
  text-align: center;
  margin: 0 0 0.5rem 0;
}

/* : text-slate-500 text-center mb-6 */
.ui-modal-desc {
  color: var(--ui-text-muted);
  text-align: center;
  margin: 0 0 1.5rem 0;
  font-size: 0.875rem;
}

/* ? flex gap-3 */
.ui-modal-actions {
  display: flex;
  gap: 0.75rem;
}

/* : flex-1 py-3 rounded-xl border-2 border-slate-100 text-slate-500 font-bold */
.ui-modal-btn-cancel {
  flex: 1;
  padding: 0.75rem;
  border-radius: 0.75rem;
  border: 2px solid #f1f5f9;
  background: transparent;
  color: var(--ui-text-muted);
  font-weight: 700;
  font-family: var(--ui-font);
  cursor: pointer;
  transition: var(--ui-transition);
}

.dark .ui-modal-btn-cancel {
  border-color: #334155;
}

.ui-modal-btn-cancel:hover {
  background: #f8fafc;
}

.dark .ui-modal-btn-cancel:hover {
  background: #334155;
}

/* : flex-1 py-3 rounded-xl bg-red-500 text-white font-bold */
.ui-modal-btn-confirm {
  flex: 1;
  padding: 0.75rem;
  border-radius: 0.75rem;
  border: none;
  background: var(--ui-primary);
  color: white;
  font-weight: 700;
  font-family: var(--ui-font);
  cursor: pointer;
  transition: var(--ui-transition);
}

.ui-modal-btn-confirm:hover {
  background: var(--ui-primary-hover);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

.ui-modal-btn-confirm.danger {
  background: #ef4444;
}

.ui-modal-btn-confirm.danger:hover {
  background: #dc2626;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.35);
}

.ui-modal-btn-confirm:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* : absolute top-6 right-6 w-8 h-8 rounded-full bg-slate-50 */
.ui-modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 2rem;
  height: 2rem;
  border-radius: 9999px;
  background: #f8fafc;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ui-text-light);
  transition: var(--ui-transition);
}

.dark .ui-modal-close {
  background: #334155;
}

.ui-modal-close:hover {
  background: #f1f5f9;
}

.dark .ui-modal-close:hover {
  background: #475569;
}

.ui-modal-close svg {
  width: 1rem;
  height: 1rem;
}

/* Sidebar / ?
   : fixed top-0 right-0 bottom-0 w-64 bg-white shadow-2xl
 */
.ui-sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 50;
  opacity: 0;
  visibility: hidden;
  transition: var(--ui-transition);
}

.ui-sidebar-overlay.open {
  opacity: 1;
  visibility: visible;
}

.ui-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 16rem;
  background: var(--ui-bg-card);
  box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  z-index: 51;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.ui-sidebar.open {
  transform: translateX(0);
}

/* ? h-16 border-b flex items-center justify-between px-4 */
.ui-sidebar-header {
  height: 4rem;
  border-bottom: 1px solid var(--ui-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
}

.ui-sidebar-title {
  font-weight: 700;
  color: var(--ui-text-dark);
}

/* ? p-4 space-y-2 */
.ui-sidebar-nav {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* ? flex items-center space-x-3 px-4 py-3 rounded-xl font-bold */
.ui-sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  font-weight: 700;
  color: var(--ui-text);
  text-decoration: none;
  transition: var(--ui-transition);
}

.ui-sidebar-link:hover {
  background: #f8fafc;
}

.dark .ui-sidebar-link:hover {
  background: #334155;
}

/* ? bg-primary/10 text-primary */
.ui-sidebar-link.active {
  background: rgba(99, 102, 241, 0.1);
  color: var(--ui-primary);
}

.dark .ui-sidebar-link.active {
  background: rgba(99, 102, 241, 0.2);
}

/* Option / ?
   : p-4 rounded-2xl border-2 transition-all
 */
.ui-option {
  width: 100%;
  text-align: left;
  padding: 1rem;
  border-radius: 1rem;
  border: 2px solid var(--ui-border-dark);
  background: var(--ui-bg-card);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--ui-transition);
  font-family: var(--ui-font);
}

.ui-option:hover:not(:disabled):not(.selected):not(.correct):not(.wrong) {
  border-color: var(--ui-primary);
  background: rgba(99, 102, 241, 0.02);
  transform: translateX(4px);
}

.ui-option.selected {
  border-color: var(--ui-primary);
  background: rgba(99, 102, 241, 0.05);
}

/* : border-green-500 bg-green-50 */
.ui-option.correct {
  border-color: #22c55e;
  background: #f0fdf4;
}

.dark .ui-option.correct {
  background: rgba(34, 197, 94, 0.15);
}

/* : border-red-500 bg-red-50 */
.ui-option.wrong {
  border-color: #ef4444;
  background: #fef2f2;
}

.dark .ui-option.wrong {
  background: rgba(239, 68, 68, 0.15);
}

/* ? w-10 h-10 rounded-xl bg-slate-100 font-bold text-lg */
.ui-option-key {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.75rem;
  background: #f1f5f9;
  color: var(--ui-text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
  transition: var(--ui-transition);
}

.dark .ui-option-key {
  background: #334155;
}

.ui-option.selected .ui-option-key,
.ui-option:hover:not(:disabled) .ui-option-key {
  background: var(--ui-primary);
  color: white;
}

.ui-option-text {
  font-weight: 700;
  color: var(--ui-text-dark);
}

/* Tabs / ?
   : flex bg-slate-200 p-1 rounded-lg
 */
.ui-tabs {
  display: flex;
  background: #e2e8f0;
  padding: 0.25rem;
  border-radius: 0.5rem;
  gap: 0.25rem;
}

.dark .ui-tabs {
  background: #334155;
}

/* px-4 py-1 text-sm font-bold rounded-md */
.ui-tab {
  flex: 1;
  padding: 0.25rem 1rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ui-text-muted);
  background: none;
  border: none;
  border-radius: 0.375rem;
  cursor: pointer;
  transition: var(--ui-transition);
  font-family: var(--ui-font);
}

.ui-tab:hover:not(.active) {
  color: var(--ui-text-dark);
}

/* ? bg-white shadow */
.ui-tab.active {
  background: var(--ui-bg-card);
  color: var(--ui-text-dark);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

.ui-tab:active:not(.active) {
  transform: scale(0.97);
}

/* Dropdown / 
   : absolute mt-2 bg-white border rounded-xl shadow-lg
 */
.ui-dropdown {
  position: relative;
  display: inline-block;
}

.ui-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 0.5rem;
  background: var(--ui-bg-card);
  border: 1px solid var(--ui-border);
  border-radius: 0.75rem;
  box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  overflow: hidden;
  z-index: 20;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-5px);
  transition: var(--ui-transition);
}

.ui-dropdown.open .ui-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* px-4 py-2.5 text-sm font-bold hover:bg-primary/5 */
.ui-dropdown-item {
  display: block;
  width: 100%;
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ui-text);
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  transition: var(--ui-transition);
  font-family: var(--ui-font);
}

.ui-dropdown-item:hover {
  background: rgba(99, 102, 241, 0.08);
  color: var(--ui-primary);
  padding-left: 1.25rem;
}

.dark .ui-dropdown-item:hover {
  background: #334155;
}

/* Loading / ?
   : w-12 h-12 border-4 border-primary/30 border-t-primary rounded-full animate-spin
 */
.ui-spinner {
  width: 3rem;
  height: 3rem;
  border: 4px solid rgba(99, 102, 241, 0.3);
  border-top-color: var(--ui-primary);
  border-radius: 9999px;
  animation: spin 0.8s linear infinite;
}

.ui-spinner-sm {
  width: 1.25rem;
  height: 1.25rem;
  border-width: 2px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}


/* Loading / 骨架屏
   : 用于内容加载时的占位显示
 */
.ui-skeleton {
  background: #e3e5e8;
  border-radius: 0.25rem;
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.dark .ui-skeleton {
  background: #3f4147;
}

@keyframes skeleton-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* 文本骨架 */
.ui-skeleton-text {
  height: 1rem;
  margin-bottom: 0.5rem;
}

.ui-skeleton-text:last-child {
  width: 60%;
}

/* 头像骨架 */
.ui-skeleton-avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 9999px;
}

/* 按钮骨架 */
.ui-skeleton-btn {
  height: 2.25rem;
  width: 5rem;
  border-radius: 0.5rem;
}

/* 卡片骨架 */
.ui-skeleton-card {
  height: 12rem;
  border-radius: 1rem;
}

/* 图片骨架 */
.ui-skeleton-image {
  width: 100%;
  height: 10rem;
  border-radius: 0.5rem;
}

/* 标题骨架 */
.ui-skeleton-title {
  height: 1.5rem;
  width: 80%;
  margin-bottom: 0.75rem;
}

/* Empty State / ?
   : text-center p-12
 */
.ui-empty {
  text-align: center;
  padding: 3rem 2rem;
}

/* w-24 h-24 bg-slate-100 rounded-full mx-auto mb-6 */
.ui-empty-icon {
  width: 6rem;
  height: 6rem;
  margin: 0 auto 1.5rem;
  background: #f1f5f9;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ui-text-light);
  font-size: 3rem;
}

.dark .ui-empty-icon {
  background: #334155;
}

/* text-xl font-bold mb-2 */
.ui-empty-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ui-text-dark);
  margin: 0 0 0.5rem 0;
}

/* text-slate-500 mb-8 max-w-sm mx-auto */
.ui-empty-text {
  color: var(--ui-text-muted);
  margin: 0 auto 2rem;
  max-width: 20rem;
}

/* Utilities / ?
 */
.ui-text-primary { color: var(--ui-primary) !important; }
.ui-text-success { color: #10b981 !important; }
.ui-text-error { color: #ef4444 !important; }
.ui-text-warning { color: #f59e0b !important; }
.ui-text-muted { color: var(--ui-text-muted) !important; }

.ui-font-bold { font-weight: 700; }
.ui-font-black { font-weight: 900; }

.ui-flex { display: flex; }
.ui-flex-col { flex-direction: column; }
.ui-items-center { align-items: center; }
.ui-items-start { align-items: flex-start; }
.ui-justify-center { justify-content: center; }
.ui-justify-between { justify-content: space-between; }
.ui-gap-2 { gap: 0.5rem; }
.ui-gap-3 { gap: 0.75rem; }
.ui-gap-4 { gap: 1rem; }
.ui-gap-6 { gap: 1.5rem; }

.ui-w-full { width: 100%; }
.ui-text-center { text-align: center; }
.ui-text-sm { font-size: 0.875rem; }
.ui-text-xs { font-size: 0.75rem; }

.ui-mt-4 { margin-top: 1rem; }
.ui-mt-6 { margin-top: 1.5rem; }
.ui-mb-4 { margin-bottom: 1rem; }
.ui-mb-6 { margin-bottom: 1.5rem; }

.ui-space-y-4 > * + * { margin-top: 1rem; }
.ui-space-y-5 > * + * { margin-top: 1.25rem; }
.ui-space-y-6 > * + * { margin-top: 1.5rem; }

.ui-hidden { display: none; }

@media (max-width: 768px) {
  .ui-hide-mobile { display: none !important; }
}

@media (min-width: 769px) {
  .ui-hide-desktop { display: none !important; }
}


.ui-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  background: var(--ui-primary);
  color: white;
  font-weight: 700;
  overflow: hidden;
  flex-shrink: 0;
}

.ui-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ui-avatar-xs { width: 1.5rem; height: 1.5rem; font-size: 0.625rem; }
.ui-avatar-sm { width: 2rem; height: 2rem; font-size: 0.75rem; }
.ui-avatar-md { width: 2.5rem; height: 2.5rem; font-size: 0.875rem; }
.ui-avatar-lg { width: 3rem; height: 3rem; font-size: 1rem; }
.ui-avatar-xl { width: 4rem; height: 4rem; font-size: 1.25rem; }

.ui-avatar-group {
  display: flex;
}

.ui-avatar-group .ui-avatar {
  border: 2px solid var(--ui-bg-card);
  margin-left: -0.5rem;
}

.ui-avatar-group .ui-avatar:first-child {
  margin-left: 0;
}

.ui-avatar-wrapper {
  position: relative;
  display: inline-block;
}

.ui-avatar-status {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 9999px;
  border: 2px solid var(--ui-bg-card);
}

.ui-avatar-status.online { background: #22c55e; }
.ui-avatar-status.offline { background: #94a3b8; }
.ui-avatar-status.busy { background: #ef4444; }
.ui-avatar-status.away { background: #f59e0b; }

/* Switch / ?
 */
.ui-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.ui-switch input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.ui-switch-track {
  width: 2.75rem;
  height: 1.5rem;
  background: #e2e8f0;
  border-radius: 9999px;
  transition: all 0.2s ease;
  position: relative;
}

.dark .ui-switch-track {
  background: #475569;
}

.ui-switch-thumb {
  position: absolute;
  top: 0.125rem;
  left: 0.125rem;
  width: 1.25rem;
  height: 1.25rem;
  background: white;
  border-radius: 9999px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  transition: all 0.2s ease;
}

.ui-switch input:checked + .ui-switch-track {
  background: var(--ui-primary);
}

.ui-switch input:checked + .ui-switch-track .ui-switch-thumb {
  transform: translateX(1.25rem);
}

.ui-switch input:focus + .ui-switch-track {
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

.ui-switch-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ui-text);
}


.ui-radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.ui-radio-group.horizontal {
  flex-direction: row;
  gap: 1rem;
}

.ui-radio {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ui-text);
}

.ui-radio input {
  position: absolute;
  opacity: 0;
}

.ui-radio-mark {
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid #cbd5e1;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.dark .ui-radio-mark {
  border-color: #475569;
}

.ui-radio-mark::after {
  content: '';
  width: 0.5rem;
  height: 0.5rem;
  background: var(--ui-primary);
  border-radius: 9999px;
  transform: scale(0);
  transition: transform 0.15s ease;
}

.ui-radio input:checked + .ui-radio-mark {
  border-color: var(--ui-primary);
}

.ui-radio input:checked + .ui-radio-mark::after {
  transform: scale(1);
}

.ui-radio input:focus + .ui-radio-mark {
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}




.ui-table-wrapper {
  overflow-x: auto;
  border-radius: 1rem;
  border: 1px solid var(--ui-border);
}

.ui-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.ui-table th {
  background: var(--ui-bg-input);
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ui-text-light);
  border-bottom: 1px solid var(--ui-border);
}

.ui-table td {
  padding: 0.75rem 1rem;
  color: var(--ui-text);
  border-bottom: 1px solid var(--ui-border);
}

.ui-table tr:last-child td {
  border-bottom: none;
}

.ui-table tbody tr {
  transition: background 0.15s ease;
}

.ui-table tbody tr:hover {
  background: rgba(99, 102, 241, 0.04);
}

.dark .ui-table tbody tr:hover {
  background: rgba(99, 102, 241, 0.1);
}

.ui-table-striped tbody tr:nth-child(even) {
  background: var(--ui-bg-input);
}


.ui-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.ui-list-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--ui-border);
  transition: background 0.15s ease;
}

.ui-list-item:last-child {
  border-bottom: none;
}

.ui-list-item:hover {
  background: rgba(99, 102, 241, 0.04);
}

.ui-list-item-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--ui-text-light);
  flex-shrink: 0;
}

.ui-list-item-content {
  flex: 1;
  min-width: 0;
}

.ui-list-item-title {
  font-weight: 700;
  color: var(--ui-text-dark);
  font-size: 0.875rem;
}

.ui-list-item-desc {
  font-size: 0.75rem;
  color: var(--ui-text-muted);
  margin-top: 0.125rem;
}

.ui-list-item-action {
  flex-shrink: 0;
}

/* Divider / ?
 */
.ui-divider {
  height: 1px;
  background: var(--ui-border);
  margin: 1rem 0;
}

.ui-divider-text {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--ui-text-light);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.ui-divider-text::before,
.ui-divider-text::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--ui-border);
}

/* Tag / ?
 */
.ui-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 0.375rem;
  background: var(--ui-bg-input);
  color: var(--ui-text);
}

.ui-tag-close {
  width: 1rem;
  height: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.25rem;
  cursor: pointer;
  opacity: 0.6;
  transition: all 0.15s ease;
}

.ui-tag-close:hover {
  opacity: 1;
  background: rgba(0,0,0,0.1);
}

.ui-tag-primary { background: rgba(99, 102, 241, 0.1); color: var(--ui-primary); }
.ui-tag-success { background: rgba(16, 185, 129, 0.1); color: #059669; }
.ui-tag-error { background: rgba(239, 68, 68, 0.1); color: #dc2626; }
.ui-tag-warning { background: rgba(245, 158, 11, 0.1); color: #d97706; }

/* Breadcrumb / ?
 */
.ui-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.ui-breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ui-text-muted);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.15s ease;
}

.ui-breadcrumb-item:hover {
  color: var(--ui-primary);
}

.ui-breadcrumb-item.active {
  color: var(--ui-text-dark);
  pointer-events: none;
}

.ui-breadcrumb-sep {
  color: var(--ui-text-light);
}

/* Accordion / ?
 */
.ui-accordion {
  border: 1px solid var(--ui-border);
  border-radius: 0.75rem;
  overflow: hidden;
}

.ui-accordion-item {
  border-bottom: 1px solid var(--ui-border);
}

.ui-accordion-item:last-child {
  border-bottom: none;
}

.ui-accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--ui-font);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ui-text-dark);
  text-align: left;
  transition: background 0.15s ease;
}

.ui-accordion-header:hover {
  background: var(--ui-bg-input);
}

.ui-accordion-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--ui-text-light);
  transition: transform 0.2s ease;
}

.ui-accordion-item.open .ui-accordion-icon {
  transform: rotate(180deg);
}

.ui-accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.ui-accordion-item.open .ui-accordion-content {
  max-height: 500px;
}

.ui-accordion-body {
  padding: 0 1rem 1rem;
  font-size: 0.875rem;
  color: var(--ui-text-muted);
}


.ui-tooltip {
  position: relative;
  display: inline-block;
}

.ui-tooltip-content {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-0.5rem);
  padding: 0.5rem 0.75rem;
  background: #1e293b;
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 0.5rem;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.15s ease;
  z-index: 100;
}

.ui-tooltip-content::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: #1e293b;
}

.ui-tooltip:hover .ui-tooltip-content {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(-0.75rem);
}

.ui-tooltip-bottom .ui-tooltip-content {
  bottom: auto;
  top: 100%;
  transform: translateX(-50%) translateY(0.5rem);
}

.ui-tooltip-bottom .ui-tooltip-content::after {
  top: auto;
  bottom: 100%;
  border-top-color: transparent;
  border-bottom-color: #1e293b;
}

.ui-tooltip-bottom:hover .ui-tooltip-content {
  transform: translateX(-50%) translateY(0.75rem);
}

/* Notification Dot / ?
 */
.ui-dot {
  position: relative;
  display: inline-block;
}

.ui-dot::after {
  content: '';
  position: absolute;
  top: -2px;
  right: -2px;
  width: 0.5rem;
  height: 0.5rem;
  background: #ef4444;
  border-radius: 9999px;
  border: 2px solid var(--ui-bg-card);
}

.ui-dot-count {
  position: absolute;
  top: -0.5rem;
  right: -0.5rem;
  min-width: 1.25rem;
  height: 1.25rem;
  padding: 0 0.375rem;
  background: #ef4444;
  color: white;
  font-size: 0.625rem;
  font-weight: 700;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--ui-bg-card);
}


.ui-kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.5rem;
  height: 1.5rem;
  padding: 0 0.375rem;
  background: var(--ui-bg-input);
  border: 1px solid var(--ui-border-dark);
  border-radius: 0.25rem;
  font-family: monospace;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ui-text-muted);
  box-shadow: 0 2px 0 var(--ui-border-dark);
}

/* Code / 代码
   : 行内代码和代码块
 */
.ui-code {
  display: inline;
  padding: 0.125rem 0.375rem;
  background: var(--ui-bg-input);
  border-radius: 0.25rem;
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 0.8125rem;
  color: #e879f9;
  font-weight: 600;
}

.dark .ui-code {
  background: #0f172a;
  color: #a78bfa;
}

/* 代码块 */
.ui-code-block {
  display: block;
  padding: 1rem;
  background: #1e293b;
  border-radius: 0.75rem;
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 0.8125rem;
  color: #e2e8f0;
  overflow-x: hidden;
  overflow-wrap: break-word;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.6;
  position: relative;
}

.ui-code-block::-webkit-scrollbar {
  display: none;
}

.ui-code-block {
  scrollbar-width: none;
}

.dark .ui-code-block {
  background: #0f172a;
}

/* 代码块带标题 */
.ui-code-block[data-lang]::before {
  content: attr(data-lang);
  position: absolute;
  top: 0.5rem;
  right: 0.75rem;
  font-size: 0.625rem;
  color: #64748b;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.05em;
}

/* 代码块浅色主题 */
.ui-code-block.light {
  background: #f8fafc;
  color: #1e293b;
  border: 1px solid #e2e8f0;
}

/* 代码块带行号 */
.ui-code-block.line-numbers {
  padding-left: 3rem;
}

.ui-code-block.line-numbers::before {
  counter-reset: line;
}

.ui-code-block.line-numbers code {
  counter-increment: line;
}

.ui-code-block.line-numbers code::before {
  content: counter(line);
  display: inline-block;
  width: 2rem;
  margin-left: -2.5rem;
  margin-right: 0.5rem;
  text-align: right;
  color: #64748b;
}

/* Callout / ?- Discord 
 */
.ui-callout {
  display: flex;
  gap: 0.75rem;
  padding: 1rem;
  border-radius: 0.5rem;
  background: #f2f3f5;
}

.dark .ui-callout {
  background: #2b2d31;
}

.ui-callout-icon {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  color: #5865f2;
}

.ui-callout-content {
  flex: 1;
  font-size: 0.875rem;
  color: var(--ui-text);
  line-height: 1.5;
}

.ui-callout-title {
  font-weight: 700;
  color: var(--ui-text-dark);
  margin-bottom: 0.25rem;
}

.ui-callout-warning {
  background: rgba(250, 166, 26, 0.1);
}

.dark .ui-callout-warning {
  background: rgba(250, 166, 26, 0.15);
}

.ui-callout-warning .ui-callout-icon { color: #faa61a; }

.ui-callout-error {
  background: rgba(237, 66, 69, 0.1);
}

.dark .ui-callout-error {
  background: rgba(237, 66, 69, 0.15);
}

.ui-callout-error .ui-callout-icon { color: #ed4245; }

.ui-callout-success {
  background: rgba(59, 165, 92, 0.1);
}

.dark .ui-callout-success {
  background: rgba(59, 165, 92, 0.15);
}

.ui-callout-success .ui-callout-icon { color: #3ba55c; }

/* Layout Utilities / ?
   ?
 */

/* Container /  */
.ui-container {
  width: 100%;
  max-width: 80rem;
  margin: 0 auto;
  padding: 0 1rem;
}

.ui-container-sm { max-width: 40rem; }
.ui-container-md { max-width: 48rem; }
.ui-container-lg { max-width: 64rem; }
.ui-container-xl { max-width: 80rem; }

/* Section /  */
.ui-section {
  padding: 4rem 0;
}

.ui-section-sm { padding: 2rem 0; }
.ui-section-lg { padding: 6rem 0; }

/* Page /  */
.ui-page {
  min-height: 100vh;
  padding-top: 5rem; /* ?navbar ?*/
}

.ui-page-center {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

/* Grid /  */
.ui-grid {
  display: grid;
  gap: 1.5rem;
}

.ui-grid-2 { grid-template-columns: repeat(2, 1fr); }
.ui-grid-3 { grid-template-columns: repeat(3, 1fr); }
.ui-grid-4 { grid-template-columns: repeat(4, 1fr); }

.ui-grid-auto {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

@media (max-width: 768px) {
  .ui-grid-2, .ui-grid-3, .ui-grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .ui-grid-3, .ui-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Flex  */
.ui-flex-wrap { flex-wrap: wrap; }
.ui-flex-1 { flex: 1; }
.ui-flex-none { flex: none; }
.ui-items-end { align-items: flex-end; }
.ui-justify-start { justify-content: flex-start; }
.ui-justify-end { justify-content: flex-end; }

/* Gap  */
.ui-gap-0 { gap: 0; }
.ui-gap-1 { gap: 0.25rem; }
.ui-gap-5 { gap: 1.25rem; }
.ui-gap-8 { gap: 2rem; }
.ui-gap-10 { gap: 2.5rem; }
.ui-gap-12 { gap: 3rem; }

/* Spacing /  */
.ui-p-0 { padding: 0; }
.ui-p-2 { padding: 0.5rem; }
.ui-p-3 { padding: 0.75rem; }
.ui-p-4 { padding: 1rem; }
.ui-p-6 { padding: 1.5rem; }
.ui-p-8 { padding: 2rem; }
.ui-p-10 { padding: 2.5rem; }
.ui-p-12 { padding: 3rem; }

.ui-px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.ui-px-4 { padding-left: 1rem; padding-right: 1rem; }
.ui-px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.ui-px-8 { padding-left: 2rem; padding-right: 2rem; }

.ui-py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.ui-py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.ui-py-6 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.ui-py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.ui-py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.ui-py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.ui-py-20 { padding-top: 5rem; padding-bottom: 5rem; }

.ui-m-0 { margin: 0; }
.ui-m-auto { margin: auto; }
.ui-mx-auto { margin-left: auto; margin-right: auto; }

.ui-mt-0 { margin-top: 0; }
.ui-mt-2 { margin-top: 0.5rem; }
.ui-mt-8 { margin-top: 2rem; }
.ui-mt-10 { margin-top: 2.5rem; }
.ui-mt-12 { margin-top: 3rem; }

.ui-mb-0 { margin-bottom: 0; }
.ui-mb-2 { margin-bottom: 0.5rem; }
.ui-mb-8 { margin-bottom: 2rem; }
.ui-mb-10 { margin-bottom: 2.5rem; }
.ui-mb-12 { margin-bottom: 3rem; }

/* Width /  */
.ui-w-auto { width: auto; }
.ui-w-1\/2 { width: 50%; }
.ui-w-1\/3 { width: 33.333%; }
.ui-w-2\/3 { width: 66.666%; }
.ui-w-1\/4 { width: 25%; }
.ui-w-3\/4 { width: 75%; }
.ui-max-w-xs { max-width: 20rem; }
.ui-max-w-sm { max-width: 24rem; }
.ui-max-w-md { max-width: 28rem; }
.ui-max-w-lg { max-width: 32rem; }
.ui-max-w-xl { max-width: 36rem; }
.ui-max-w-2xl { max-width: 42rem; }
.ui-max-w-full { max-width: 100%; }

/* Height /  */
.ui-h-full { height: 100%; }
.ui-h-screen { height: 100vh; }
.ui-min-h-screen { min-height: 100vh; }

/* Typography /  */
.ui-text-left { text-align: left; }
.ui-text-right { text-align: right; }

.ui-text-lg { font-size: 1.125rem; }
.ui-text-xl { font-size: 1.25rem; }
.ui-text-2xl { font-size: 1.5rem; }
.ui-text-3xl { font-size: 1.875rem; }
.ui-text-4xl { font-size: 2.25rem; }
.ui-text-5xl { font-size: 3rem; }

.ui-font-normal { font-weight: 400; }
.ui-font-medium { font-weight: 500; }
.ui-font-semibold { font-weight: 600; }
.ui-font-extrabold { font-weight: 800; }

.ui-leading-tight { line-height: 1.25; }
.ui-leading-normal { line-height: 1.5; }
.ui-leading-relaxed { line-height: 1.625; }
.ui-leading-loose { line-height: 2; }

.ui-tracking-tight { letter-spacing: -0.025em; }
.ui-tracking-wide { letter-spacing: 0.025em; }

.ui-uppercase { text-transform: uppercase; }
.ui-lowercase { text-transform: lowercase; }
.ui-capitalize { text-transform: capitalize; }

.ui-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ui-line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.ui-line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Colors /  */
.ui-text-dark { color: var(--ui-text-dark); }
.ui-text-light { color: var(--ui-text-light); }
.ui-text-white { color: white; }

.ui-bg-transparent { background: transparent; }
.ui-bg-white { background: white; }
.ui-bg-card { background: var(--ui-bg-card); }
.ui-bg-muted { background: var(--ui-bg-input); }
.ui-bg-primary { background: var(--ui-primary); }
.ui-bg-primary-light { background: rgba(99, 102, 241, 0.1); }

/* Border /  */
.ui-border { border: 1px solid var(--ui-border); }
.ui-border-2 { border: 2px solid var(--ui-border); }
.ui-border-t { border-top: 1px solid var(--ui-border); }
.ui-border-b { border-bottom: 1px solid var(--ui-border); }
.ui-border-none { border: none; }

.ui-rounded { border-radius: 0.5rem; }
.ui-rounded-lg { border-radius: 0.75rem; }
.ui-rounded-xl { border-radius: 1rem; }
.ui-rounded-2xl { border-radius: 1.5rem; }
.ui-rounded-3xl { border-radius: 2rem; }
.ui-rounded-full { border-radius: 9999px; }
.ui-rounded-none { border-radius: 0; }

/* Shadow /  */
.ui-shadow { box-shadow: var(--ui-shadow-card); }
.ui-shadow-lg { box-shadow: var(--ui-shadow-lg); }
.ui-shadow-xl { box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1); }
.ui-shadow-none { box-shadow: none; }

/* Position /  */
.ui-relative { position: relative; }
.ui-absolute { position: absolute; }
.ui-fixed { position: fixed; }
.ui-sticky { position: sticky; }

.ui-inset-0 { inset: 0; }
.ui-top-0 { top: 0; }
.ui-right-0 { right: 0; }
.ui-bottom-0 { bottom: 0; }
.ui-left-0 { left: 0; }

.ui-z-10 { z-index: 10; }
.ui-z-20 { z-index: 20; }
.ui-z-30 { z-index: 30; }
.ui-z-40 { z-index: 40; }
.ui-z-50 { z-index: 50; }

/* Overflow /  */
.ui-overflow-hidden { overflow: hidden; }
.ui-overflow-auto { overflow: auto; }
.ui-overflow-x-auto { overflow-x: auto; }
.ui-overflow-y-auto { overflow-y: auto; }

/* Opacity / ?*/
.ui-opacity-0 { opacity: 0; }
.ui-opacity-50 { opacity: 0.5; }
.ui-opacity-75 { opacity: 0.75; }
.ui-opacity-100 { opacity: 1; }

/* Cursor /  */
.ui-cursor-pointer { cursor: pointer; }
.ui-cursor-not-allowed { cursor: not-allowed; }

/* Transition /  */
.ui-transition { transition: all 0.2s ease; }
.ui-transition-colors { transition: color 0.2s, background-color 0.2s, border-color 0.2s; }

/* Hover Effects /  */
.ui-hover-lift:hover { transform: translateY(-2px); }
.ui-hover-scale:hover { transform: scale(1.02); }
.ui-hover-shadow:hover { box-shadow: var(--ui-shadow-lg); }
.ui-hover-primary:hover { color: var(--ui-primary); }
.ui-hover-bg:hover { background: var(--ui-bg-input); }


.ui-hero {
  text-align: center;
  padding: 6rem 1rem;
}

.ui-hero-title {
  font-size: 3rem;
  font-weight: 900;
  color: var(--ui-text-dark);
  margin: 0 0 1rem;
  letter-spacing: -0.025em;
}

.ui-hero-subtitle {
  font-size: 1.25rem;
  color: var(--ui-text-muted);
  margin: 0 0 2rem;
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
}

.ui-hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .ui-hero-title { font-size: 2rem; }
  .ui-hero-subtitle { font-size: 1rem; }
  .ui-hero { padding: 4rem 1rem; }
}

/* Feature Card / ?
 */
.ui-feature {
  text-align: center;
  padding: 2rem;
}

.ui-feature-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--ui-primary);
}

.ui-feature-title {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--ui-text-dark);
  margin: 0 0 0.5rem;
}

.ui-feature-desc {
  font-size: 0.875rem;
  color: var(--ui-text-muted);
  margin: 0;
  line-height: 1.6;
}


.ui-footer {
  background: var(--ui-bg-card);
  border-top: 1px solid var(--ui-border);
  padding: 3rem 1rem;
}

.ui-footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  max-width: 64rem;
  margin: 0 auto;
}

.ui-footer-title {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--ui-text-dark);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 1rem;
}

.ui-footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.ui-footer-links li {
  margin-bottom: 0.5rem;
}

.ui-footer-links a {
  font-size: 0.875rem;
  color: var(--ui-text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.ui-footer-links a:hover {
  color: var(--ui-primary);
}

.ui-footer-bottom {
  text-align: center;
  padding-top: 2rem;
  margin-top: 2rem;
  border-top: 1px solid var(--ui-border);
  font-size: 0.875rem;
  color: var(--ui-text-muted);
}


.ui-bg-gradient {
  background: linear-gradient(135deg, 
    rgba(199, 210, 254, 0.5) 0%, 
    rgba(254, 202, 202, 0.3) 25%,
    rgba(254, 215, 170, 0.3) 50%,
    rgba(167, 243, 208, 0.3) 75%,
    rgba(191, 219, 254, 0.4) 100%
  );
}

.ui-bg-gradient-purple {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

.ui-bg-gradient-blue {
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
}

.ui-bg-gradient-pink {
  background: linear-gradient(135deg, #ec4899, #f43f5e);
}

.ui-text-gradient {
  background: linear-gradient(135deg, #6366f1, #8b5cf6, #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}


.ui-link {
  color: var(--ui-primary);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.15s;
}

.ui-link:hover {
  text-decoration: underline;
}

.ui-link-muted {
  color: var(--ui-text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.ui-link-muted:hover {
  color: var(--ui-primary);
}

/* Responsive Utilities / ?
 */
@media (max-width: 640px) {
  .ui-sm-hidden { display: none !important; }
  .ui-sm-block { display: block !important; }
  .ui-sm-flex { display: flex !important; }
  .ui-sm-flex-col { flex-direction: column !important; }
  .ui-sm-text-center { text-align: center !important; }
  .ui-sm-w-full { width: 100% !important; }
}

@media (min-width: 641px) and (max-width: 1024px) {
  .ui-md-hidden { display: none !important; }
}

@media (min-width: 1025px) {
  .ui-lg-hidden { display: none !important; }
}