@import"https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Sora:wght@600;700;800&display=swap";:root{--brand-primary: #0f8ba0;--brand-primary-dark: #0c6e80;--brand-primary-light: #eaf6ff;--brand-accent: #f1814f;--brand-accent-dark: #de6435;--ink-strong: #16232c;--ink-soft: #4d5f6a;--ink-subtle: #7a8e99;--surface-bg: #f8fafc;--surface-card: #ffffff;--surface-card-alt: #f1f5f9;--surface-glass: rgba(255, 255, 255, .72);--success: #10b981;--success-bg: #ecfdf5;--error: #ef4444;--error-bg: #fef2f2;--info: #3b82f6;--info-bg: #eff6ff;--warning: #f59e0b;--warning-bg: #fffbeb;--line: rgba(15, 139, 160, .12);--line-strong: rgba(15, 139, 160, .24);--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 18px;--radius-xl: 24px;--sidebar-width: 260px}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:Plus Jakarta Sans,Segoe UI,sans-serif;color:var(--ink-strong);background:var(--surface-bg);line-height:1.5;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}h1,h2,h3,h4{margin:0;font-family:Sora,sans-serif;letter-spacing:-.02em}.app-root{min-height:100vh;display:flex;flex-direction:column}.topbar{position:sticky;top:0;z-index:50;background:var(--surface-glass);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);padding:12px 24px;display:flex;align-items:center;justify-content:space-between}.topbar .brand{font-family:Sora,sans-serif;font-size:1.25rem;font-weight:800;color:var(--brand-primary);display:flex;align-items:center;gap:8px}.page-wrap{flex:1;width:min(1400px,100% - 32px);margin:0 auto;padding:32px 0}.portal-layout{display:grid;grid-template-columns:var(--sidebar-width) 1fr;gap:32px;align-items:start;transition:grid-template-columns .3s cubic-bezier(.16,1,.3,1)}.portal-layout.collapsed{grid-template-columns:80px 1fr}.sidebar{position:sticky;top:96px;background:var(--surface-card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;display:flex;flex-direction:column;gap:24px;box-shadow:var(--shadow-md)}.sidebar-nav{display:flex;flex-direction:column;gap:4px}.sidebar-nav a{padding:12px 16px;border-radius:var(--radius-md);font-weight:600;color:var(--ink-soft);transition:all .2s ease;display:flex;align-items:center;gap:12px}.sidebar-nav a:hover,.sidebar-nav a.active{background:var(--brand-primary-light);color:var(--brand-primary)}.sidebar-nav a.active{background:var(--brand-primary);color:#fff}.panel{background:var(--surface-card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm)}.panel-header{margin-bottom:24px}.panel-header h2{font-size:1.5rem;color:var(--ink-strong)}.panel-header p{color:var(--ink-soft);margin-top:4px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}.stat-card{background:var(--surface-card);border:1px solid var(--line);border-radius:var(--radius-md);padding:24px;box-shadow:var(--shadow-sm);transition:all .2s ease}.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand-primary)}.stat-card span{display:block;font-size:.85rem;font-weight:700;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px}.stat-card strong{font-size:2.25rem;color:var(--brand-primary)}.table-wrap{background:var(--surface-card);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;margin-top:24px}.table{width:100%;border-collapse:collapse}.table th{background:var(--surface-card-alt);padding:12px 16px;text-align:left;font-size:.85rem;font-weight:700;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid var(--line)}.table td{padding:16px;border-bottom:1px solid var(--line);font-size:.95rem}.table tr:last-child td{border-bottom:none}.table tr:hover td{background:var(--brand-primary-light)}.row-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}label{display:block;font-size:.85rem;font-weight:700;color:var(--ink-soft);margin-bottom:8px;text-transform:uppercase;letter-spacing:.05em}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;border-radius:var(--radius-md);font-weight:700;font-size:.9rem;cursor:pointer;transition:all .2s ease;border:none;gap:8px}.btn:disabled{opacity:.5;cursor:not-allowed;filter:grayscale(1);pointer-events:none}.btn+.btn{margin-left:0}.btn-primary{background:var(--brand-primary);color:#fff}.btn-primary:hover{background:var(--brand-primary-dark)}.btn-outline{background:transparent;color:var(--brand-primary);border:1px solid var(--brand-primary)}.btn-outline:hover{background:var(--brand-primary-light)}.btn-ghost{background:transparent;color:var(--ink-soft)}.btn-ghost:hover{color:var(--brand-primary);background:var(--brand-primary-light)}.btn-danger{color:var(--error)}.btn-danger:hover{background:var(--error-bg)}input:not([type=checkbox]):not([type=radio]),select,textarea{width:100%;padding:10px 14px;border-radius:var(--radius-md);border:1px solid var(--line-strong);font-family:inherit;font-size:.95rem;transition:all .2s ease}.list-toolbar input:not([type=checkbox]):not([type=radio]),.list-toolbar select{width:auto}.list-toolbar .search-input{flex:1;width:100%}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand-primary);box-shadow:0 0 0 4px var(--brand-primary-light)}textarea{resize:vertical;min-height:132px}.status-pill{display:inline-flex;padding:4px 10px;border-radius:999px;font-size:.75rem;font-weight:700;text-transform:uppercase}.status-pill.active{background:var(--success-bg);color:var(--success)}.status-pill.archived{background:var(--warning-bg);color:var(--warning)}.list-toolbar{display:flex;align-items:center;gap:16px;margin-bottom:24px;flex-wrap:wrap}.pagination-controls{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:24px}.pagination-controls span{min-width:120px;text-align:center}.search-input{flex:1;min-width:200px}.transactions-card-list{display:none;gap:16px}.transactions-card{padding:18px}.transactions-card-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;margin-bottom:16px}.transactions-card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px 18px}.transactions-card-grid strong{display:block;margin-bottom:4px;font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-soft)}.toast-stack{position:fixed;bottom:24px;right:24px;display:flex;flex-direction:column;gap:12px;z-index:100}.toast{padding:12px 20px;border-radius:var(--radius-md);background:#fff;box-shadow:var(--shadow-xl);display:flex;align-items:center;justify-content:space-between;gap:16px;min-width:300px;border-left:4px solid var(--brand-primary);font-weight:600;animation:slideIn .3s ease-out}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.toast.success{border-left-color:var(--success)}.toast.error{border-left-color:var(--error)}.toast.info{border-left-color:var(--info)}.mobile-dashboard-bar{display:none;align-items:center;gap:12px;padding:14px 20px;background:var(--surface-card);border:1px solid var(--line);border-radius:var(--radius-md);margin-bottom:24px;box-shadow:var(--shadow-sm)}.mobile-menu-toggle{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:8px 14px;border:1px solid rgba(15,139,160,.2);background:var(--brand-primary-light);color:var(--brand-primary);border-radius:var(--radius-sm);cursor:pointer;font-weight:700;font-size:.88rem;transition:all .2s ease}.mobile-menu-toggle:hover{background:var(--brand-primary);color:#fff}.mobile-dashboard-title{font-weight:800;font-family:Sora,sans-serif;color:var(--ink-strong);font-size:1.05rem}.sidebar-backdrop{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#16232c66;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:999;animation:fadeIn .25s ease-out}.sidebar-close-btn{display:none;align-items:center;justify-content:center;position:absolute;top:16px;right:16px;width:32px;height:32px;border-radius:50%;border:1px solid var(--line);background:var(--surface-bg);color:var(--ink-soft);cursor:pointer;font-size:1.1rem;font-weight:700;line-height:1;transition:all .2s ease;z-index:10}.sidebar-close-btn:hover{background:var(--error-bg);color:var(--error);border-color:#ef444433}@media(max-width:1024px){.portal-layout,.portal-layout.collapsed{grid-template-columns:1fr;gap:16px}.mobile-dashboard-bar{display:flex}.sidebar{position:fixed;top:0;left:0;height:100vh;width:280px;z-index:1000;border-radius:0;border:none;border-right:1px solid var(--line);transform:translate(-100%);transition:transform .3s cubic-bezier(.16,1,.3,1);background:var(--surface-card);display:flex;flex-direction:column;gap:20px;box-shadow:var(--shadow-xl);overflow-y:auto}.sidebar.mobile-open{transform:translate(0)}.sidebar-close-btn{display:flex}.desktop-collapse-btn{display:none!important}}@media(max-width:768px){.topbar{padding:12px 16px}.page-wrap{padding:16px 0}.list-toolbar{flex-direction:column;align-items:stretch}.topbar .brand span{font-size:1rem}.topbar .brand span span{display:none}}@media(max-width:1280px){.transactions-table-wrap{display:none}.transactions-card-list{display:grid}}.modal-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#16232c73;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:1000;display:flex;align-items:center;justify-content:center;animation:fadeIn .25s cubic-bezier(.4,0,.2,1) forwards}.modal-content{background:var(--surface-card);border:1px solid var(--line-strong);border-radius:var(--radius-lg);padding:32px;width:min(640px,100% - 32px);max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-xl);transform:translateY(12px) scale(.98);animation:modalScaleUp .3s cubic-bezier(.34,1.56,.64,1) forwards}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes modalScaleUp{to{transform:translateY(0) scale(1)}}.rich-text-content img{max-width:100%;height:auto!important;max-height:none!important;border-radius:var(--radius-sm);margin:12px 0;box-shadow:var(--shadow-sm);display:block}.portal-layout.no-sidebar{grid-template-columns:1fr!important;gap:0!important;margin:0!important;padding:0!important;max-width:100%!important;width:100%!important}.workspace-layout{display:flex;flex-direction:column;height:100vh;background:var(--surface-bg)}.workspace-top-bar{background:var(--surface-card);border-bottom:1px solid var(--line);padding:14px 24px;display:flex;align-items:center;justify-content:space-between;box-shadow:var(--shadow-sm)}.workspace-brand-area{display:flex;align-items:center;gap:16px}.workspace-back-btn{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:var(--radius-sm);background:var(--brand-primary-light);color:var(--brand-primary);font-weight:700;font-size:.85rem;border:1px solid rgba(15,139,160,.1);cursor:pointer;transition:all .2s ease}.workspace-back-btn:hover{background:var(--brand-primary);color:#fff}.workspace-title{font-family:Sora,sans-serif;font-size:1.25rem;font-weight:800;color:var(--ink-strong)}.workspace-body{flex:1;display:grid;grid-template-columns:320px 1fr;height:calc(100vh - 65px);overflow:hidden}.workspace-left-pane{background:var(--surface-card);border-right:1px solid var(--line);padding:24px;overflow-y:auto;display:flex;flex-direction:column;gap:20px}.workspace-right-pane{padding:0;overflow-y:auto;background:#f8fafc;display:flex;flex-direction:column}.workspace-tabs-bar{background:var(--surface-card);border-bottom:1px solid var(--line);display:flex;padding:0 24px;gap:8px}.workspace-tab{padding:16px 20px;font-weight:700;font-size:.9rem;color:var(--ink-soft);cursor:pointer;border:none;background:transparent;position:relative;transition:all .2s ease}.workspace-tab:hover,.workspace-tab.active{color:var(--brand-primary)}.workspace-tab.active:after{content:"";position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--brand-primary);border-top-left-radius:3px;border-top-right-radius:3px}.workspace-tab-content{padding:32px;flex:1;overflow-y:auto}.chapter-nav-list{display:flex;flex-direction:column;gap:8px}.chapter-nav-item{padding:14px 18px;border-radius:var(--radius-md);background:var(--surface-bg);border:1px solid var(--line);cursor:pointer;transition:all .2s ease;text-align:left}.chapter-nav-item:hover{border-color:var(--brand-primary);background:var(--brand-primary-light)}.chapter-nav-item.active{background:var(--brand-primary);color:#fff;border-color:var(--brand-primary)}.chapter-nav-item.active .chapter-meta{color:#fffc}.chapter-meta{font-size:.75rem;color:var(--ink-soft);margin-top:4px;display:flex;justify-content:space-between}.lp-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;margin-bottom:24px;box-shadow:var(--shadow-sm);transition:all .2s ease}.lp-card:hover{box-shadow:var(--shadow-md)}.lp-steps{margin-top:16px;display:flex;flex-direction:column;gap:12px;padding-left:0;list-style:none}.lp-step-item{background:#f8fafc;border:1px solid var(--line);padding:12px 18px;border-radius:var(--radius-sm);display:flex;gap:16px}.lp-step-number{background:var(--brand-primary);color:#fff;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.85rem;flex-shrink:0}.lp-step-text{font-size:.95rem;line-height:1.6}.mcq-difficulty-tier{margin-bottom:32px}.mcq-tier-header{font-size:1.1rem;font-weight:800;margin-bottom:16px;display:flex;align-items:center;gap:8px}.mcq-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;margin-bottom:16px;box-shadow:var(--shadow-sm)}.mcq-options-list{display:grid;grid-template-columns:1fr;gap:10px;margin:16px 0}.mcq-option-item{padding:12px 16px;border-radius:var(--radius-sm);background:#f8fafc;border:1px solid var(--line);display:flex;align-items:flex-start;gap:12px;font-size:.95rem;font-weight:500}.mcq-option-item input{margin-top:3px}.mcq-option-item.correct{background:var(--success-bg);border-color:var(--success);color:var(--success);font-weight:700}.mcq-explanation{background:var(--info-bg);border-left:4px solid var(--info);padding:14px 18px;border-radius:var(--radius-sm);font-size:.9rem;margin-top:14px;color:var(--ink-soft)}.settings-form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:16px}.katex-display{margin:1em 0;overflow-x:auto;overflow-y:hidden;padding:4px 0}.ai-spinner{border:4px solid rgba(15,139,160,.1);border-top-color:var(--brand-primary);border-radius:50%;width:40px;height:40px;animation:ai-spin 1s linear infinite;margin:24px auto}@keyframes ai-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}