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var(--border-strong);border-radius:var(--r-lg);background:var(--surface)}.empty-state__icon{width:48px;height:48px;border-radius:var(--r-lg);background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;margin:0 auto var(--s-4);border:1px solid var(--border)}.empty-state__title{font-size:14px;font-weight:600;color:var(--text-2);margin-bottom:var(--s-1)}.empty-state__desc{font-size:13px;color:var(--text-3);max-width:34ch;margin:0 auto var(--s-5);line-height:1.55}.alert--success{background:var(--success-soft);color:var(--success);border:1px solid rgba(15,122,74,.18);border-left:3px solid var(--success);border-radius:var(--r-md);padding:var(--s-3) var(--s-4);font-size:13px;margin-bottom:var(--s-4);line-height:1.5}.alert--error,.alert--danger{background:var(--danger-soft);color:var(--danger);border:1px solid rgba(180,35,24,.18);border-left:3px solid var(--danger);border-radius:var(--r-md);padding:var(--s-3) 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infinite}.toast-stack{position:fixed;bottom:var(--s-5);right:var(--s-5);z-index:9999;display:flex;flex-direction:column;gap:var(--s-2);max-width:360px;width:calc(100% - var(--s-10));pointer-events:none}.toast{display:flex;align-items:flex-start;gap:var(--s-3);padding:var(--s-3) var(--s-4);background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--r-lg);box-shadow:var(--e-3);font-size:13px;animation:slideInRight var(--dur-3) var(--ease);pointer-events:all;border-left:3px solid var(--border-strong)}.toast--success{border-left-color:var(--success)}.toast--error{border-left-color:var(--danger)}.toast__icon{flex-shrink:0;margin-top:1px}.toast__content{flex:1;min-width:0}.toast__message{color:var(--text);font-weight:500;line-height:1.4}.toast__close{background:none;border:none;color:var(--text-4);cursor:pointer;padding:2px;display:flex;align-items:center;flex-shrink:0;border-radius:var(--r-sm);transition:color var(--dur-1),background 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var(--ease);overflow-y:auto;box-shadow:none}.admin-sidebar--open{transform:none;box-shadow:var(--e-3)}.admin-main{padding:var(--s-5) var(--s-4)}.permissions-grid{grid-template-columns:1fr}}@media (max-width: 640px){.user-table,.admin-table{font-size:12px}.user-table th,.user-table td,.admin-table th,.admin-table td{padding:var(--s-2) var(--s-3)}.modal-box{border-radius:var(--r-lg)}}.notification-toasts-container{position:fixed;bottom:var(--s-5);right:var(--s-5);z-index:9998;display:flex;flex-direction:column;gap:var(--s-2);max-width:360px;width:calc(100% - var(--s-10))}.notification-toast{background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--r-lg);box-shadow:var(--e-3);border-left:3px solid var(--accent);padding:var(--s-3) var(--s-4);display:flex;gap:var(--s-3);align-items:flex-start;animation:slideInRight var(--dur-3) var(--ease);cursor:pointer;transition:transform var(--dur-1)}.notification-toast:hover{transform:translateY(-2px)}.notification-toast--success{border-left-color:var(--success)}.notification-toast--error{border-left-color:var(--danger)}.notification-toast-title{font-size:13px;font-weight:600;color:var(--text);margin-bottom:2px}.notification-toast-message{font-size:12px;color:var(--text-3)}.cart-badge{animation:cartBadgePulse .45s ease}.page-layout-split{display:grid;grid-template-columns:minmax(320px,680px) minmax(280px,380px);gap:var(--s-8);align-items:start}.page-layout-constrained{max-width:var(--page-max)}.page-info-panel{background:var(--surface-2);border:1px dashed var(--border-strong);border-radius:var(--r-lg);padding:var(--s-6);color:var(--text-2);font-size:13px;line-height:1.6}.page-info-panel h3{font-size:14px;font-weight:600;color:var(--text);margin:0 0 var(--s-3) 0}.page-info-panel ul{padding-left:var(--s-4);margin:var(--s-2) 0}.page-info-panel li{margin-bottom:var(--s-2)}@media (max-width: 1024px){.page-layout-split{grid-template-columns:1fr;gap:var(--s-6)}}.dd-trigger{display:inline-flex;align-items:center;gap:8px;justify-content:space-between;cursor:pointer;text-align:left;font:inherit}.dd-trigger:disabled{cursor:not-allowed;opacity:.6}.dd-trigger-label{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.dd-trigger-label--placeholder{color:var(--text-3, var(--ink-500));font-weight:500}.dd-chevron{flex:none;color:var(--text-3, var(--ink-500));transition:transform var(--dur-1, .15s) var(--ease, ease)}.dd-trigger[aria-expanded=true] .dd-chevron{transform:rotate(180deg)}.dd-menu{position:fixed;z-index:3000;margin:0;padding:6px;list-style:none;max-height:280px;overflow-y:auto;overscroll-behavior:contain;background:var(--surface, #fff);border:1px solid var(--border, var(--line));border-radius:var(--r-lg, 12px);box-shadow:var(--e-4, 0 12px 32px rgba(15, 23, 42, .18));animation:dd-pop var(--dur-1, .12s) var(--ease, ease)}@keyframes dd-pop{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}.dd-option{display:flex;align-items:center;gap:8px;padding:9px 10px;border-radius:var(--r-md, 8px);font-size:14px;font-weight:500;color:var(--text, var(--ink-700));cursor:pointer;white-space:normal}.dd-option--active{background:var(--surface-2, rgba(102, 126, 234, .08))}.dd-option--selected{font-weight:700;color:var(--accent, #667eea)}.dd-option--disabled{color:var(--text-3, var(--ink-400));cursor:not-allowed}.dd-option-check{flex:none;margin-left:auto;color:var(--accent, #667eea)}.dd-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:2999}.dashboard-loading{display:flex;align-items:center;justify-content:center;gap:var(--s-3);padding:var(--s-20) var(--s-5);font-size:14px;color:var(--text-3)}.dashboard-error{text-align:center;padding:var(--s-16) var(--s-5)}.dashboard-error p{font-size:14px;color:var(--danger);margin-bottom:var(--s-4)}.dashboard-refresh-btn{display:inline-flex;align-items:center;gap:var(--s-2);height:var(--control-h);padding:0 var(--s-4);background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--r-md);font-size:13px;font-weight:500;font-family:inherit;color:var(--text-3);cursor:pointer;transition:background var(--dur-1) var(--ease),color var(--dur-1) var(--ease),border-color var(--dur-1) var(--ease)}.dashboard-refresh-btn:hover{background:var(--surface-2);color:var(--text);border-color:var(--border-strong)}.dashboard-refresh-btn:disabled{opacity:.5;cursor:not-allowed}.dashboard-refresh-btn .refresh-icon{display:inline-flex;transition:transform var(--dur-3) var(--ease)}.dashboard-refresh-btn.spinning .refresh-icon,.dashboard-refresh-btn.spinning svg{animation:spin .8s linear infinite}.section-refresh-btn{background:none;border:none;color:var(--text-4);cursor:pointer;padding:var(--s-1);border-radius:var(--r-sm);display:flex;align-items:center;transition:color var(--dur-1),background var(--dur-1)}.section-refresh-btn:hover{color:var(--accent);background:var(--accent-soft)}.section-refresh-btn.spinning svg{animation:spin .8s linear infinite}.kpi-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,200px),1fr));gap:var(--s-4);margin-bottom:var(--s-6)}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:var(--s-5);box-shadow:var(--e-1);display:flex;flex-direction:column;gap:var(--s-3);transition:box-shadow var(--dur-2) var(--ease),transform var(--dur-2) var(--ease),border-color var(--dur-2) var(--ease);cursor:default}.stat-card:hover{box-shadow:var(--e-2);transform:translateY(-2px);border-color:var(--border-strong)}.stat-card__header{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--s-3)}.stat-card__icon-wrap{width:40px;height:40px;border-radius:var(--r-md);background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;flex-shrink:0}.stat-card__icon-wrap--success{background:var(--success-soft);color:var(--success)}.stat-card__icon-wrap--warning{background:var(--warning-soft);color:var(--warning)}.stat-card__icon-wrap--danger{background:var(--danger-soft);color:var(--danger)}.stat-card__icon-wrap--info{background:var(--info-soft);color:var(--info)}.stat-card__icon-wrap--neutral{background:var(--surface-2);color:var(--text-3)}.stat-card__value{font-size:28px;font-weight:700;letter-spacing:-.026em;color:var(--text);line-height:1.1;font-variant-numeric:tabular-nums}.stat-card__label{font-size:11.5px;font-weight:600;color:var(--text-3);text-transform:uppercase;letter-spacing:.05em}.stat-card__trend{font-size:11px;font-weight:600;color:var(--success);display:flex;align-items:center;gap:2px}.stat-card__trend--down{color:var(--danger)}.kpi-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:var(--s-5);box-shadow:var(--e-1);display:flex;flex-direction:column;gap:var(--s-2);transition:box-shadow var(--dur-2) var(--ease),transform var(--dur-2) var(--ease),border-color var(--dur-2) var(--ease)}.kpi-card:hover{box-shadow:var(--e-2);transform:translateY(-2px);border-color:var(--border-strong)}.kpi-icon{font-size:22px;margin-bottom:0;opacity:.85}.kpi-value{font-size:28px;font-weight:700;letter-spacing:-.026em;color:var(--text);line-height:1.1;font-variant-numeric:tabular-nums}.kpi-label{font-size:11.5px;font-weight:600;color:var(--text-3);text-transform:uppercase;letter-spacing:.05em}.kpi-card--students{--kpi-color: var(--accent)}.kpi-card--revenue{--kpi-color: var(--success)}.kpi-card--tests{--kpi-color: var(--info)}.kpi-card--questions{--kpi-color: var(--success)}.kpi-card--orders{--kpi-color: var(--warning)}.kpi-card--fulfillment{--kpi-color: var(--text-3)}.charts-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:var(--s-4);margin-bottom:var(--s-6)}.chart-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:var(--s-6);box-shadow:var(--e-1);display:flex;flex-direction:column}.chart-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--s-5)}.chart-card-title{font-size:14px;font-weight:600;color:var(--text);letter-spacing:-.014em}.activity-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:var(--s-4);margin-bottom:var(--s-6)}.activity-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:var(--s-6);box-shadow:var(--e-1);display:flex;flex-direction:column}.activity-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--s-5)}.activity-card-title{font-size:14px;font-weight:600;color:var(--text);letter-spacing:-.014em}.quick-actions{display:flex;flex-wrap:wrap;gap:var(--s-2);margin-bottom:var(--s-6)}.quick-action-btn{display:inline-flex;align-items:center;gap:var(--s-2);height:var(--control-h);padding:0 var(--s-4);background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--r-md);font-size:13px;font-weight:500;font-family:inherit;color:var(--text-2);cursor:pointer;transition:background var(--dur-1) var(--ease),color var(--dur-1) var(--ease),border-color var(--dur-1) var(--ease),box-shadow var(--dur-1) var(--ease),transform var(--dur-1) var(--ease)}.quick-action-btn:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);box-shadow:0 2px 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 * Quill Editor v2.0.3
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 * Copyright (c) 2017-2024, Slab
 * Copyright (c) 2014, Jason Chen
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