:root{--primary-color: #4f46e5;--primary-hover: #4338ca;--primary-light: #e0e7ff;--primary-dark: #3730a3;--success-color: #10b981;--success-light: #d1fae5;--warning-color: #f59e0b;--warning-light: #fef3c7;--danger-color: #ef4444;--danger-light: #fee2e2;--info-color: #3b82f6;--info-light: #dbeafe;--bg-color: #f9fafb;--bg-white: #ffffff;--bg-secondary: #f3f4f6;--bg-tertiary: #e5e7eb;--text-color: #111827;--text-secondary: #6b7280;--text-tertiary: #9ca3af;--text-inverse: #ffffff;--border-color: #e5e7eb;--border-focus: #4f46e5;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -2px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -4px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 8px 10px -6px rgba(0, 0, 0, .1);--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-2xl: 48px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";--font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;--font-size-xs: 12px;--font-size-sm: 14px;--font-size-base: 16px;--font-size-lg: 18px;--font-size-xl: 20px;--font-size-2xl: 24px;--font-size-3xl: 30px;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .35s ease;--z-dropdown: 100;--z-sticky: 200;--z-modal-backdrop: 300;--z-modal: 400;--z-toast: 500}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:var(--font-size-base);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);color:var(--text-color);background-color:var(--bg-color);line-height:var(--line-height-normal);min-height:100vh}a{color:var(--primary-color);text-decoration:none}a:hover{color:var(--primary-hover);text-decoration:underline}img{max-width:100%;height:auto}ul,ol{list-style:none}h1,h2,h3,h4,h5,h6{font-weight:var(--font-weight-semibold);line-height:var(--line-height-tight);color:var(--text-color)}h1{font-size:var(--font-size-3xl)}h2{font-size:var(--font-size-2xl)}h3{font-size:var(--font-size-xl)}h4{font-size:var(--font-size-lg)}h5{font-size:var(--font-size-base)}h6{font-size:var(--font-size-sm)}p{margin-bottom:var(--spacing-md);color:var(--text-secondary)}input,textarea,select{font-family:var(--font-family);font-size:var(--font-size-sm);color:var(--text-color);background-color:var(--bg-white);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:10px 14px;width:100%;outline:none;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}input:focus,textarea:focus,select:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px var(--primary-light)}input::placeholder,textarea::placeholder{color:var(--text-tertiary)}input:disabled,textarea:disabled,select:disabled{background-color:var(--bg-secondary);cursor:not-allowed;opacity:.7}label{display:block;font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--text-color);margin-bottom:var(--spacing-xs)}.form-group{margin-bottom:var(--spacing-md)}.form-error{font-size:var(--font-size-xs);color:var(--danger-color);margin-top:var(--spacing-xs)}.form-hint{font-size:var(--font-size-xs);color:var(--text-tertiary);margin-top:var(--spacing-xs)}button,.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);font-family:var(--font-family);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);line-height:1;padding:10px 18px;border:1px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;-webkit-user-select:none;user-select:none}button:disabled,.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--primary-color);color:var(--text-inverse)}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover)}.btn-secondary{background-color:var(--bg-white);color:var(--text-color);border-color:var(--border-color)}.btn-secondary:hover:not(:disabled){background-color:var(--bg-secondary)}.btn-danger{background-color:var(--danger-color);color:var(--text-inverse)}.btn-danger:hover:not(:disabled){background-color:#dc2626}.btn-ghost{background-color:transparent;color:var(--text-secondary);border:none}.btn-ghost:hover:not(:disabled){background-color:var(--bg-secondary);color:var(--text-color)}.btn-sm{font-size:var(--font-size-xs);padding:6px 12px}.btn-lg{font-size:var(--font-size-base);padding:14px 24px}.btn-block{width:100%}.card{background-color:var(--bg-white);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-sm)}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-md);padding-bottom:var(--spacing-md);border-bottom:1px solid var(--border-color)}.card-title{font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold)}.card-footer{margin-top:var(--spacing-md);padding-top:var(--spacing-md);border-top:1px solid var(--border-color)}table{width:100%;border-collapse:collapse;font-size:var(--font-size-sm)}thead{background-color:var(--bg-secondary)}th{text-align:left;font-weight:var(--font-weight-medium);color:var(--text-secondary);padding:12px 16px;border-bottom:2px solid var(--border-color);white-space:nowrap}td{padding:12px 16px;border-bottom:1px solid var(--border-color);color:var(--text-color)}tbody tr:hover{background-color:var(--bg-secondary)}.badge{display:inline-flex;align-items:center;gap:4px;font-size:var(--font-size-xs);font-weight:var(--font-weight-medium);padding:2px 10px;border-radius:var(--radius-full);white-space:nowrap}.badge-primary{background-color:var(--primary-light);color:var(--primary-dark)}.badge-success{background-color:var(--success-light);color:#065f46}.badge-warning{background-color:var(--warning-light);color:#92400e}.badge-danger{background-color:var(--danger-light);color:#991b1b}.badge-info{background-color:var(--info-light);color:#1e40af}.badge-neutral{background-color:var(--bg-tertiary);color:var(--text-secondary)}.badge-admin{background-color:var(--danger-light);color:#991b1b}.badge-moderator{background-color:var(--warning-light);color:#92400e}.badge-user{background-color:var(--info-light);color:#1e40af}.badge-active{background-color:var(--success-light);color:#065f46}.badge-inactive{background-color:var(--bg-tertiary);color:var(--text-secondary)}.badge-pending{background-color:var(--warning-light);color:#92400e}.loading-spinner{display:inline-block;width:32px;height:32px;border:3px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;animation:spin .8s linear infinite}.loading-spinner-sm{width:16px;height:16px;border-width:2px}.loading-spinner-lg{width:48px;height:48px;border-width:4px}.loading-container{display:flex;align-items:center;justify-content:center;padding:var(--spacing-2xl);flex-direction:column;gap:var(--spacing-md)}.loading-text{font-size:var(--font-size-sm);color:var(--text-secondary)}@keyframes spin{to{transform:rotate(360deg)}}.toast-container{position:fixed;top:var(--spacing-lg);right:var(--spacing-lg);z-index:var(--z-toast);display:flex;flex-direction:column;gap:var(--spacing-sm);pointer-events:none}.toast{display:flex;align-items:center;gap:var(--spacing-sm);padding:12px 20px;border-radius:var(--radius-md);background-color:var(--bg-white);border:1px solid var(--border-color);box-shadow:var(--shadow-lg);font-size:var(--font-size-sm);max-width:400px;pointer-events:auto;animation:toast-in .3s ease forwards}.toast-exit{animation:toast-out .3s ease forwards}.toast-success{border-left:4px solid var(--success-color)}.toast-error{border-left:4px solid var(--danger-color)}.toast-warning{border-left:4px solid var(--warning-color)}.toast-info{border-left:4px solid var(--info-color)}.toast-icon{flex-shrink:0;font-size:var(--font-size-lg)}.toast-message{flex:1;color:var(--text-color)}.toast-close{flex-shrink:0;background:none;border:none;color:var(--text-tertiary);cursor:pointer;padding:2px;font-size:var(--font-size-lg);line-height:1}.toast-close:hover{color:var(--text-color)}@keyframes toast-in{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}@keyframes toast-out{0%{transform:translate(0);opacity:1}to{transform:translate(100%);opacity:0}}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background-color:#00000080;z-index:var(--z-modal-backdrop);display:flex;align-items:center;justify-content:center;animation:fade-in .2s ease}.modal-content{background-color:var(--bg-white);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);width:90%;max-width:500px;max-height:90vh;overflow-y:auto;z-index:var(--z-modal);animation:modal-in .2s ease}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-lg);border-bottom:1px solid var(--border-color)}.modal-title{font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold)}.modal-close{background:none;border:none;font-size:var(--font-size-xl);color:var(--text-tertiary);cursor:pointer;padding:4px;line-height:1}.modal-close:hover{color:var(--text-color)}.modal-body{padding:var(--spacing-lg)}.modal-footer{display:flex;align-items:center;justify-content:flex-end;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-lg);border-top:1px solid var(--border-color)}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes modal-in{0%{transform:scale(.95);opacity:0}to{transform:scale(1);opacity:1}}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.page-content{padding:var(--spacing-lg) 0}.flex{display:flex}.flex-col{display:flex;flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.text-center{text-align:center}.text-right{text-align:right}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.mb-sm{margin-bottom:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-2xl);text-align:center}.empty-state-icon{font-size:48px;margin-bottom:var(--spacing-md);opacity:.4}.empty-state-title{font-size:var(--font-size-lg);font-weight:var(--font-weight-medium);color:var(--text-color);margin-bottom:var(--spacing-sm)}.empty-state-text{font-size:var(--font-size-sm);color:var(--text-secondary)}@media (max-width: 768px){.container{padding:0 var(--spacing-sm)}.card{padding:var(--spacing-md)}.modal-content{width:95%}table{font-size:var(--font-size-xs)}th,td{padding:8px 10px}}@media (max-width: 480px){:root{--font-size-base: 14px}.toast-container{right:var(--spacing-sm);left:var(--spacing-sm)}.toast{max-width:100%}}#app{min-height:100vh;display:flex;flex-direction:column}.app-main{flex:1;width:100%;max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}