.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:10px 20px;font-family:var(--font-sans);font-size:var(--text-sm);font-weight:500;line-height:1.4;border:1px solid transparent;border-radius:var(--radius-md);background-color:var(--surface);color:var(--text-primary);cursor:pointer;user-select:none;white-space:nowrap;transition:all var(--transition-fast);box-shadow:var(--shadow-xs);}.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm);}.btn:active{transform:translateY(0);box-shadow:none;}.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}.btn:disabled,.btn[disabled]{opacity:0.5;cursor:not-allowed;pointer-events:none;transform:none;box-shadow:none;}.btn-primary{background-color:var(--primary);color:#ffffff;border-color:var(--primary);}.btn-primary:hover{background-color:var(--primary-dark);border-color:var(--primary-dark);}.btn-secondary{background-color:var(--dark);color:#ffffff;border-color:var(--dark);}.btn-secondary:hover{background-color:var(--dark-700);border-color:var(--dark-700);}.btn-ghost{background-color:transparent;color:var(--text-primary);border-color:transparent;box-shadow:none;}.btn-ghost:hover{background-color:var(--primary-50);color:var(--primary);box-shadow:none;}.btn-danger{background-color:var(--danger);color:#ffffff;border-color:var(--danger);}.btn-danger:hover{background-color:#b91c1c;border-color:#b91c1c;}.btn-success{background-color:var(--success);color:#ffffff;border-color:var(--success);}.btn-success:hover{background-color:#15803d;border-color:#15803d;}.btn-warning{background-color:var(--warning);color:#ffffff;border-color:var(--warning);}.btn-warning:hover{background-color:#d97706;border-color:#d97706;}.btn-sm{padding:6px 14px;font-size:var(--text-xs);border-radius:var(--radius-sm);}.btn-lg{padding:14px 28px;font-size:var(--text-base);border-radius:var(--radius-md);}.btn-icon{padding:10px;width:40px;height:40px;}.btn-icon.btn-sm{padding:6px;width:32px;height:32px;}.btn-icon.btn-lg{padding:14px;width:48px;height:48px;}.card{background-color:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-xs);overflow:hidden;transition:box-shadow var(--transition-base),transform var(--transition-base);}.card-header{padding:var(--space-5) var(--space-6);border-bottom:1px solid var(--border);}.card-body{padding:var(--space-6);}.card-footer{padding:var(--space-4) var(--space-6);border-top:1px solid var(--border);background-color:var(--background);}.card-hover:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);}.form-group{margin-bottom:var(--space-5);}.form-label{display:block;margin-bottom:var(--space-2);font-size:var(--text-sm);font-weight:500;color:var(--text-primary);}.form-label-required::after{content:' *';color:var(--danger);}.form-control{display:block;width:100%;padding:10px 14px;font-family:var(--font-sans);font-size:var(--text-sm);line-height:1.5;color:var(--text-primary);background-color:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);transition:border-color var(--transition-fast),box-shadow var(--transition-fast);appearance:none;}.form-control:hover{border-color:var(--dark-600);}.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-100);}.form-control::placeholder{color:var(--text-tertiary);}.form-control:disabled,.form-control[disabled]{opacity:0.5;cursor:not-allowed;background-color:var(--background);}.form-control.error{border-color:var(--danger);box-shadow:0 0 0 3px var(--danger-light);}.form-control.error:focus{border-color:var(--danger);box-shadow:0 0 0 3px var(--danger-light);}.form-select{display:block;width:100%;padding:10px 38px 10px 14px;font-family:var(--font-sans);font-size:var(--text-sm);line-height:1.5;color:var(--text-primary);background-color:var(--surface);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2364748B' viewBox='0 0 16 16'%3E%3Cpath d='M4.646 5.646a.5.5 0 0 1 .708 0L8 8.293l2.646-2.647a.5.5 0 0 1 .708.708l-3 3a.5.5 0 0 1-.708 0l-3-3a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:16px;border:1px solid var(--border);border-radius:var(--radius-md);appearance:none;cursor:pointer;transition:border-color var(--transition-fast),box-shadow var(--transition-fast);}.form-select:hover{border-color:var(--dark-600);}.form-select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-100);}.form-select:disabled{opacity:0.5;cursor:not-allowed;background-color:var(--background);}.form-textarea{display:block;width:100%;min-height:120px;padding:10px 14px;font-family:var(--font-sans);font-size:var(--text-sm);line-height:1.6;color:var(--text-primary);background-color:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);resize:vertical;transition:border-color var(--transition-fast),box-shadow var(--transition-fast);}.form-textarea:hover{border-color:var(--dark-600);}.form-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-100);}.form-textarea:disabled{opacity:0.5;cursor:not-allowed;background-color:var(--background);}.form-helper{display:block;margin-top:var(--space-1);font-size:var(--text-xs);color:var(--text-tertiary);}.form-helper.error{color:var(--danger);}.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius-md);}.table{width:100%;border-collapse:collapse;font-size:var(--text-sm);}.table thead{background-color:var(--background);}.table th{padding:12px 16px;text-align:left;font-weight:600;font-size:var(--text-xs);text-transform:uppercase;letter-spacing:0.05em;color:var(--text-secondary);border-bottom:1px solid var(--border);white-space:nowrap;}.table td{padding:12px 16px;color:var(--text-primary);border-bottom:1px solid var(--border-light);vertical-align:middle;}.table tbody tr:last-child td{border-bottom:none;}.table tbody tr:hover{background-color:var(--primary-50);}.table-striped tbody tr:nth-child(even){background-color:var(--background);}.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;font-size:var(--text-xs);font-weight:500;line-height:1.4;border-radius:var(--radius-full);white-space:nowrap;background-color:var(--border-light);color:var(--text-secondary);}.badge-primary{background-color:var(--primary-100);color:var(--primary-dark);}.badge-success{background-color:var(--success-light);color:var(--success);}.badge-warning{background-color:var(--warning-light);color:#92400e;}.badge-danger{background-color:var(--danger-light);color:var(--danger);}.badge-info{background-color:var(--info-light);color:var(--info);}.alert{display:flex;align-items:flex-start;gap:var(--space-3);padding:var(--space-4);font-size:var(--text-sm);line-height:1.5;border-radius:var(--radius-md);border:1px solid transparent;}.alert-success{background-color:var(--success-light);border-color:rgba(22,163,74,0.2);color:var(--success);}.alert-danger{background-color:var(--danger-light);border-color:rgba(220,38,38,0.2);color:var(--danger);}.alert-warning{background-color:var(--warning-light);border-color:rgba(245,158,11,0.2);color:#92400e;}.alert-info{background-color:var(--info-light);border-color:rgba(14,165,233,0.2);color:var(--info);}.modal-backdrop{position:fixed;inset:0;z-index:var(--z-modal);display:flex;align-items:center;justify-content:center;padding:var(--space-4);background-color:rgba(0,0,0,0.5);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);opacity:0;visibility:hidden;transition:opacity var(--transition-base),visibility var(--transition-base);}.modal-backdrop.active{opacity:1;visibility:visible;}.modal{width:100%;max-width:520px;max-height:85vh;background-color:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);overflow:hidden;transform:scale(0.95) translateY(10px);transition:transform var(--transition-base);}.modal-backdrop.active .modal{transform:scale(1) translateY(0);}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-5) var(--space-6);border-bottom:1px solid var(--border);}.modal-header h3{font-size:var(--text-lg);font-weight:600;color:var(--text-primary);}.modal-close{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--radius-sm);color:var(--text-tertiary);cursor:pointer;transition:all var(--transition-fast);border:none;background:none;}.modal-close:hover{background-color:var(--background);color:var(--text-primary);}.modal-body{padding:var(--space-6);overflow-y:auto;max-height:calc(85vh - 140px);}.modal-footer{display:flex;align-items:center;justify-content:flex-end;gap:var(--space-3);padding:var(--space-4) var(--space-6);border-top:1px solid var(--border);background-color:var(--background);}.toast-container{position:fixed;top:var(--space-6);right:var(--space-6);z-index:var(--z-toast);display:flex;flex-direction:column;gap:var(--space-3);pointer-events:none;}.toast{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);min-width:300px;max-width:420px;background-color:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);font-size:var(--text-sm);color:var(--text-primary);pointer-events:all;animation:toast-slide-in 300ms ease forwards;}.toast-success{border-left:3px solid var(--success);}.toast-error{border-left:3px solid var(--danger);}.toast-info{border-left:3px solid var(--info);}@keyframes toast-slide-in{from{opacity:0;transform:translateX(100%);}to{opacity:1;transform:translateX(0);}}@keyframes toast-slide-out{from{opacity:1;transform:translateX(0);}to{opacity:0;transform:translateX(100%);}}.sidebar{display:flex;flex-direction:column;width:260px;height:100vh;background-color:var(--surface);border-right:1px solid var(--border);overflow-y:auto;position:sticky;top:0;z-index:var(--z-sidebar);}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-5) var(--space-5);border-bottom:1px solid var(--border-light);}.sidebar-menu{flex:1;padding:var(--space-3);overflow-y:auto;}.sidebar-menu-section{margin-bottom:var(--space-4);}.sidebar-menu-section-title{padding:var(--space-2) var(--space-3);font-size:var(--text-xs);font-weight:600;text-transform:uppercase;letter-spacing:0.05em;color:var(--text-tertiary);}.sidebar-menu-item{display:flex;align-items:center;gap:var(--space-3);padding:9px var(--space-3);font-size:var(--text-sm);font-weight:450;color:var(--text-secondary);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);text-decoration:none;}.sidebar-menu-item:hover{background-color:var(--primary-50);color:var(--text-primary);text-decoration:none;}.sidebar-menu-item.active{background-color:var(--primary-100);color:var(--primary-dark);font-weight:500;}.topbar{display:flex;align-items:center;justify-content:space-between;height:64px;padding:0 var(--space-6);background-color:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:var(--z-sticky);}.topbar-title{font-size:var(--text-lg);font-weight:600;color:var(--text-primary);}.topbar-actions{display:flex;align-items:center;gap:var(--space-3);}.avatar{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius-full);background-color:var(--primary-100);color:var(--primary-dark);font-size:var(--text-sm);font-weight:600;overflow:hidden;flex-shrink:0;}.avatar img{width:100%;height:100%;object-fit:cover;}.avatar-sm{width:32px;height:32px;font-size:var(--text-xs);}.avatar-lg{width:56px;height:56px;font-size:var(--text-lg);}.avatar-xl{width:72px;height:72px;font-size:var(--text-xl);}.dropdown{position:relative;display:inline-block;}.dropdown-menu{position:absolute;top:calc(100% + 4px);left:0;z-index:var(--z-dropdown);min-width:180px;padding:var(--space-1);background-color:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(-4px);transition:opacity var(--transition-fast),transform var(--transition-fast),visibility var(--transition-fast);}.dropdown-menu.right{left:auto;right:0;}.dropdown.open .dropdown-menu,.dropdown-menu.show{opacity:1;visibility:visible;transform:translateY(0);}.dropdown-item{display:flex;align-items:center;gap:var(--space-2);width:100%;padding:8px 12px;font-size:var(--text-sm);color:var(--text-primary);border:none;background:none;border-radius:var(--radius-sm);cursor:pointer;text-align:left;transition:background-color var(--transition-fast);text-decoration:none;}.dropdown-item:hover{background-color:var(--primary-50);color:var(--primary);text-decoration:none;}.dropdown-item.danger{color:var(--danger);}.dropdown-item.danger:hover{background-color:var(--danger-light);}.dropdown-divider{height:1px;background-color:var(--border-light);margin:var(--space-1) 0;}.pagination{display:flex;align-items:center;gap:var(--space-1);}.page-item{list-style:none;}.page-link{display:flex;align-items:center;justify-content:center;min-width:36px;height:36px;padding:0 var(--space-2);font-size:var(--text-sm);font-weight:500;color:var(--text-secondary);background-color:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);text-decoration:none;}.page-link:hover{background-color:var(--primary-50);border-color:var(--primary);color:var(--primary);text-decoration:none;}.page-item.active .page-link{background-color:var(--primary);border-color:var(--primary);color:#ffffff;}.page-item.disabled .page-link{opacity:0.4;cursor:not-allowed;pointer-events:none;}.tabs{display:flex;align-items:center;gap:0;border-bottom:1px solid var(--border);}.tab{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-3) var(--space-4);font-size:var(--text-sm);font-weight:500;color:var(--text-secondary);background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;}.tab:hover{color:var(--text-primary);}.tab.active{color:var(--primary);border-bottom-color:var(--primary);}.spinner{display:inline-block;width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--primary);border-radius:var(--radius-full);animation:spin 600ms linear infinite;}.spinner-lg{width:32px;height:32px;border-width:3px;}@keyframes spin{to{transform:rotate(360deg);}}.skeleton{display:block;width:100%;height:16px;background:linear-gradient(90deg,var(--border-light) 25%,var(--border) 50%,var(--border-light) 75%);background-size:200% 100%;border-radius:var(--radius-sm);animation:skeleton-shimmer 1.5s ease-in-out infinite;}.skeleton-lg{height:24px;border-radius:var(--radius-md);}.skeleton-circle{width:40px;height:40px;border-radius:var(--radius-full);}@keyframes skeleton-shimmer{0%{background-position:200% 0;}100%{background-position:-200% 0;}}