:root{color-scheme:light;--brand:#3157d5;--brand-2:#6d46d8;--brand-soft:#e9edff;--bg:#f4f6fb;--surface:#fff;--surface-2:#f8f9fd;--surface-3:#eef1f8;--text:#182033;--text-2:#566078;--text-3:#7b8499;--border:#dfe3ee;--success:#147a55;--success-soft:#e5f7ef;--warning:#a05b08;--warning-soft:#fff1d6;--danger:#bd3340;--danger-soft:#ffeaed;--info:#2662b8;--info-soft:#e8f1ff;--shadow:0 18px 50px rgba(24,32,51,.10);--shadow-sm:0 5px 18px rgba(24,32,51,.08);--radius:18px;--radius-sm:12px;--sidebar:252px;--topbar:72px;--ease:200ms cubic-bezier(.2,.8,.2,1);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px}
html[data-theme=dark]{color-scheme:dark;--brand:#8da5ff;--brand-2:#b29aff;--brand-soft:#24305a;--bg:#0f1421;--surface:#171e2d;--surface-2:#1c2536;--surface-3:#252f42;--text:#f3f5fb;--text-2:#b6bfd1;--text-3:#8993a9;--border:#303b50;--success:#63d3a5;--success-soft:#173c32;--warning:#ffc56f;--warning-soft:#47351a;--danger:#ff8790;--danger-soft:#49242b;--info:#83b6ff;--info-soft:#203856;--shadow:0 18px 55px rgba(0,0,0,.32);--shadow-sm:0 6px 20px rgba(0,0,0,.25)}
@media(prefers-color-scheme:dark){html[data-theme=system]{color-scheme:dark;--brand:#8da5ff;--brand-2:#b29aff;--brand-soft:#24305a;--bg:#0f1421;--surface:#171e2d;--surface-2:#1c2536;--surface-3:#252f42;--text:#f3f5fb;--text-2:#b6bfd1;--text-3:#8993a9;--border:#303b50;--success:#63d3a5;--success-soft:#173c32;--warning:#ffc56f;--warning-soft:#47351a;--danger:#ff8790;--danger-soft:#49242b;--info:#83b6ff;--info-soft:#203856;--shadow:0 18px 55px rgba(0,0,0,.32);--shadow-sm:0 6px 20px rgba(0,0,0,.25)}}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);line-height:1.55;overflow-x:hidden}body,button,input,select,textarea{font:inherit}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:none}img,video,iframe{max-width:100%}button,a,input,select,textarea{min-width:0}button{cursor:pointer}svg.icon{width:21px;height:21px;flex:0 0 auto}h1,h2,h3,h4,p{margin-top:0}h1{font-size:clamp(1.65rem,3vw,2.3rem);line-height:1.15;letter-spacing:-.035em;margin-bottom:.55rem}h2{font-size:1.25rem;line-height:1.25;letter-spacing:-.02em}h3{font-size:1rem}small,.muted{color:var(--text-2)}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.76rem;font-weight:800;color:var(--brand);margin-bottom:.5rem}.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
:focus-visible{outline:3px solid color-mix(in srgb,var(--brand) 65%,transparent);outline-offset:2px}.skip-link{position:fixed;left:1rem;top:-5rem;background:var(--surface);padding:.75rem 1rem;z-index:9999;border-radius:8px}.skip-link:focus{top:1rem}
.app-shell{min-height:100vh;display:grid;grid-template-columns:var(--sidebar) minmax(0,1fr)}.sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar);background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;z-index:70;padding:18px 14px;transition:transform var(--ease),width var(--ease)}.brand{height:56px;display:flex;align-items:center;gap:12px;padding:0 8px;color:var(--text);margin-bottom:10px}.brand-mark{width:40px;height:40px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(145deg,var(--brand),var(--brand-2));color:#fff;font-weight:900;font-size:1.12rem;box-shadow:0 7px 18px color-mix(in srgb,var(--brand) 30%,transparent)}.brand-mark.large{width:56px;height:56px;border-radius:18px;font-size:1.5rem}.brand-copy{display:flex;flex-direction:column;min-width:0}.brand-copy strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.brand-copy small{font-size:.75rem}.side-nav{display:flex;flex-direction:column;gap:3px;overflow-y:auto;padding:4px 0}.nav-link{min-height:46px;display:flex;align-items:center;gap:12px;color:var(--text-2);padding:0 12px;border-radius:12px;font-size:.91rem;font-weight:650;transition:background var(--ease),color var(--ease),transform var(--ease)}.nav-link:hover{background:var(--surface-2);color:var(--text)}.nav-link.active{background:var(--brand-soft);color:var(--brand)}.nav-link:active{transform:scale(.985)}.sidebar-footer{margin-top:auto;border-top:1px solid var(--border);padding-top:10px}.user-chip{display:flex;align-items:center;gap:10px;padding:10px 8px;color:var(--text);border-radius:12px}.user-chip:hover{background:var(--surface-2)}.user-chip>span:last-child{display:flex;min-width:0;flex-direction:column}.user-chip strong{font-size:.85rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-chip small{font-size:.72rem}.avatar{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);font-weight:800;flex:0 0 auto}.main-shell{grid-column:2;min-width:0}.topbar{height:var(--topbar);position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:14px;padding:0 clamp(16px,3vw,34px)}.global-search{position:relative;display:flex;align-items:center;gap:9px;background:var(--surface-2);border:1px solid var(--border);border-radius:13px;padding:0 13px;max-width:480px;flex:1;min-height:44px}.global-search input{border:0;background:transparent;color:var(--text);width:100%;outline:0;font-size:.94rem}.global-search svg{color:var(--text-3);width:19px}.search-results{position:absolute;top:calc(100% + 8px);left:0;right:0;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:14px;padding:7px;max-height:360px;overflow:auto}.search-result{display:block;padding:10px;border-radius:9px;color:var(--text)}.search-result:hover{background:var(--surface-2)}.search-result small{display:block;text-transform:capitalize}.top-actions{margin-left:auto;display:flex;align-items:center;gap:8px}.icon-button{width:44px;height:44px;border:0;border-radius:12px;background:transparent;color:var(--text-2);display:grid;place-items:center;position:relative}.icon-button:hover{background:var(--surface-3);color:var(--text)}.notification-button .badge-count{position:absolute;right:1px;top:2px;min-width:18px;height:18px;padding:0 4px;border-radius:9px;background:var(--danger);color:#fff;font-size:.67rem;font-weight:800;display:grid;place-items:center;border:2px solid var(--surface)}.connection-state{display:flex;align-items:center;gap:7px;color:var(--text-2);font-size:.76rem;margin-right:4px}.connection-state>span:first-child{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px color-mix(in srgb,var(--success) 13%,transparent)}.connection-state.offline>span:first-child{background:var(--danger)}.connection-state.reconnecting>span:first-child{background:var(--warning);animation:pulse 1s infinite}.main-content{padding:clamp(20px,3vw,38px);max-width:1600px;margin:0 auto;width:100%;padding-bottom:80px}.mobile-nav,.mobile-only{display:none}
.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:24px}.page-head p{color:var(--text-2);margin-bottom:0;max-width:680px}.page-actions{display:flex;gap:9px;flex-wrap:wrap}.button{min-height:44px;border:0;border-radius:12px;padding:.68rem 1rem;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:750;font-size:.9rem;transition:transform var(--ease),background var(--ease),box-shadow var(--ease);white-space:nowrap}.button:hover{transform:translateY(-1px)}.button:active{transform:translateY(0) scale(.985)}.button svg{width:18px;height:18px}.button-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 8px 20px color-mix(in srgb,var(--brand) 22%,transparent)}.button-secondary{background:var(--text);color:var(--surface)}.button-subtle{background:var(--surface-3);color:var(--text)}.button-outline{background:transparent;border:1px solid var(--border);color:var(--text)}.button-danger{background:var(--danger);color:#fff}.button-dark{background:#111827;color:#fff}.button-sm{min-height:38px;padding:.45rem .75rem;font-size:.82rem}.button[disabled],.button.loading{opacity:.55;pointer-events:none}.button.loading:before{content:"";width:16px;height:16px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .7s linear infinite}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:20px;min-width:0}.card-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.card-header h2,.card-header h3{margin:0}.card-header p{margin:3px 0 0;color:var(--text-2)}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(260px,100%),1fr));gap:16px}.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:22px}.stat-card{position:relative;overflow:hidden;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:18px}.stat-card:after{content:"";position:absolute;right:-25px;top:-30px;width:88px;height:88px;border-radius:50%;background:color-mix(in srgb,var(--brand) 8%,transparent)}.stat-label{display:block;color:var(--text-2);font-size:.82rem;font-weight:650}.stat-value{font-size:1.85rem;line-height:1.2;font-weight:850;letter-spacing:-.04em;margin-top:7px}.stat-meta{font-size:.76rem;color:var(--text-3);margin-top:4px}.split-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(280px,.8fr);gap:18px;margin-bottom:20px}.three-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.stack{display:flex;flex-direction:column;gap:14px}.row{display:flex;align-items:center;gap:12px}.row-between{display:flex;align-items:center;justify-content:space-between;gap:12px}.wrap{flex-wrap:wrap}.divider{height:1px;background:var(--border);margin:18px 0}.metric-line{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--border)}.metric-line:last-child{border-bottom:0}.activity-list{display:flex;flex-direction:column}.activity-item{display:grid;grid-template-columns:36px minmax(0,1fr) auto;gap:11px;padding:12px 0;border-bottom:1px solid var(--border);align-items:center}.activity-item:last-child{border-bottom:0}.activity-icon{width:36px;height:36px;border-radius:11px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center}.activity-icon svg{width:18px}.activity-item p{margin:0;font-size:.9rem}.activity-item time{color:var(--text-3);font-size:.75rem}.quick-actions{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}.quick-action{min-height:82px;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:8px;padding:13px;border:1px solid var(--border);border-radius:14px;color:var(--text);background:var(--surface-2);font-weight:700}.quick-action:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--brand)}.quick-action svg{width:22px}
.chart-bars{height:210px;display:flex;align-items:flex-end;gap:7px;padding-top:20px}.chart-bar{flex:1;min-width:9px;background:linear-gradient(180deg,var(--brand-2),var(--brand));border-radius:7px 7px 3px 3px;position:relative;transition:height var(--ease)}.chart-bar:hover{filter:brightness(1.08)}.chart-bar span{position:absolute;bottom:calc(100% + 5px);left:50%;transform:translateX(-50%);font-size:.68rem;color:var(--text-3)}.ring{--value:0;width:92px;height:92px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--brand) calc(var(--value)*1%),var(--surface-3) 0);position:relative}.ring:after{content:"";position:absolute;inset:8px;background:var(--surface);border-radius:50%}.ring strong{position:relative;z-index:1;font-size:1.15rem}.progress{height:9px;border-radius:999px;background:var(--surface-3);overflow:hidden}.progress>span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--brand),var(--brand-2));width:var(--value,0%)}
.data-toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:15px}.data-toolbar .field{margin:0;min-width:160px}.data-toolbar .search-field{flex:1;min-width:min(240px,100%)}.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:14px;background:var(--surface)}table{width:100%;border-collapse:collapse;font-size:.88rem}th,td{padding:13px 14px;text-align:left;border-bottom:1px solid var(--border);vertical-align:middle}th{color:var(--text-2);font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;background:var(--surface-2);white-space:nowrap}tbody tr:last-child td{border-bottom:0}tbody tr:hover{background:color-mix(in srgb,var(--brand) 3%,var(--surface))}.cell-primary{font-weight:750;color:var(--text)}.cell-secondary{display:block;color:var(--text-2);font-size:.78rem;margin-top:2px}.table-actions{display:flex;gap:6px;justify-content:flex-end}.responsive-cards{display:none}.pagination{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:14px}.pagination-links{display:flex;gap:6px}.pagination a,.pagination span{min-width:40px;height:40px;border:1px solid var(--border);border-radius:10px;display:grid;place-items:center;color:var(--text)}.pagination .active{background:var(--brand);border-color:var(--brand);color:#fff}.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:.26rem .6rem;font-size:.74rem;font-weight:750;line-height:1.3;background:var(--surface-3);color:var(--text-2);white-space:nowrap}.badge:before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}.badge.success,.badge.active,.badge.graded,.badge.completed{background:var(--success-soft);color:var(--success)}.badge.warning,.badge.pending,.badge.late,.badge.expiring_soon,.badge.trial{background:var(--warning-soft);color:var(--warning)}.badge.danger,.badge.suspended,.badge.expired,.badge.revoked{background:var(--danger-soft);color:var(--danger)}.badge.info,.badge.submitted,.badge.in_progress{background:var(--info-soft);color:var(--info)}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:15px;min-width:0}.field label,.label{font-size:.83rem;font-weight:720;color:var(--text)}.field small{font-size:.75rem;color:var(--text-2)}.field-error{color:var(--danger);font-size:.78rem}.required:after{content:" *";color:var(--danger)}input,textarea,select{width:100%;border:1px solid var(--border);border-radius:12px;background:var(--surface);color:var(--text);padding:.74rem .82rem;min-height:46px;outline:none;transition:border var(--ease),box-shadow var(--ease),background var(--ease);font-size:1rem}textarea{min-height:120px;resize:vertical}input:focus,textarea:focus,select:focus{border-color:var(--brand);box-shadow:0 0 0 4px color-mix(in srgb,var(--brand) 13%,transparent)}input:disabled,textarea:disabled,select:disabled{opacity:.6;background:var(--surface-3)}select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);background-position:calc(100% - 18px) 20px,calc(100% - 13px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:36px}.input-icon{position:relative}.input-icon svg{position:absolute;left:13px;top:13px;color:var(--text-3)}.input-icon input{padding-left:42px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 16px}.form-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.field-full{grid-column:1/-1}.check-row{display:flex;align-items:flex-start;gap:10px;min-height:44px;padding:8px 0}.check-row input{width:20px;height:20px;min-height:20px;accent-color:var(--brand);flex:0 0 auto;margin-top:2px}.check-row label{font-size:.9rem}.segmented{display:flex;padding:4px;border:1px solid var(--border);border-radius:13px;background:var(--surface-2);gap:3px}.segmented label{flex:1;position:relative}.segmented input{position:absolute;opacity:0;pointer-events:none}.segmented span{min-height:40px;display:grid;place-items:center;border-radius:9px;padding:.4rem .7rem;font-weight:700;font-size:.85rem;color:var(--text-2)}.segmented input:checked+span{background:var(--surface);color:var(--brand);box-shadow:var(--shadow-sm)}.radio-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px}.radio-card{position:relative}.radio-card input{position:absolute;opacity:0}.radio-card span{display:block;min-height:92px;padding:15px;border:1px solid var(--border);border-radius:14px;background:var(--surface);font-weight:750}.radio-card span small{display:block;font-weight:450;margin-top:4px}.radio-card input:checked+span{border:2px solid var(--brand);background:var(--brand-soft);color:var(--brand)}.switch{display:inline-flex;align-items:center;gap:10px;cursor:pointer}.switch input{position:absolute;opacity:0}.switch-track{width:46px;height:26px;background:var(--surface-3);border:1px solid var(--border);border-radius:999px;position:relative;transition:background var(--ease)}.switch-track:after{content:"";width:20px;height:20px;background:#fff;border-radius:50%;position:absolute;top:2px;left:2px;box-shadow:0 2px 6px #0003;transition:transform var(--ease)}.switch input:checked+.switch-track{background:var(--brand);border-color:var(--brand)}.switch input:checked+.switch-track:after{transform:translateX(20px)}.form-actions{display:flex;justify-content:flex-end;gap:9px;border-top:1px solid var(--border);padding-top:18px;margin-top:6px}.sticky-actions{position:sticky;bottom:10px;background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(12px);padding:12px;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);z-index:15}
.flash,.status-banner{border-radius:13px;padding:12px 14px;margin-bottom:16px;display:flex;align-items:flex-start;gap:10px;border:1px solid transparent;font-size:.9rem}.flash.success,.status-banner.success{background:var(--success-soft);color:var(--success);border-color:color-mix(in srgb,var(--success) 20%,transparent)}.flash.error,.status-banner.error{background:var(--danger-soft);color:var(--danger);border-color:color-mix(in srgb,var(--danger) 20%,transparent)}.flash.warning,.status-banner.warning{background:var(--warning-soft);color:var(--warning);border-color:color-mix(in srgb,var(--warning) 20%,transparent)}.flash.info,.status-banner.info{background:var(--info-soft);color:var(--info);border-color:color-mix(in srgb,var(--info) 20%,transparent)}.status-banner svg{width:20px}.empty-state{text-align:center;padding:44px 20px;border:1px dashed var(--border);border-radius:16px;background:var(--surface-2)}.empty-icon{width:58px;height:58px;margin:0 auto 14px;border-radius:18px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand)}.empty-state h3{font-size:1.1rem;margin-bottom:6px}.empty-state p{color:var(--text-2);max-width:430px;margin:0 auto 16px}.skeleton-list{display:flex;flex-direction:column;gap:12px}.skeleton-list span{height:64px;border-radius:12px;background:linear-gradient(90deg,var(--surface-3),var(--surface-2),var(--surface-3));background-size:200% 100%;animation:shimmer 1.4s infinite}
.tabs{display:flex;gap:5px;overflow-x:auto;padding:4px;margin:0 0 20px;background:var(--surface);border:1px solid var(--border);border-radius:14px;scrollbar-width:none}.tabs::-webkit-scrollbar{display:none}.tab{min-height:42px;padding:.55rem .85rem;border-radius:10px;white-space:nowrap;color:var(--text-2);font-size:.84rem;font-weight:700}.tab:hover{background:var(--surface-2);color:var(--text)}.tab.active{background:var(--brand-soft);color:var(--brand)}.class-hero{position:relative;overflow:hidden;border-radius:22px;min-height:210px;background:linear-gradient(125deg,color-mix(in srgb,var(--class-color,var(--brand)) 92%,#101c45),color-mix(in srgb,var(--brand-2) 72%,#111a34));color:#fff;padding:28px;margin-bottom:18px;display:flex;align-items:flex-end}.class-hero:before{content:"";position:absolute;width:240px;height:240px;border-radius:50%;right:-50px;top:-100px;background:#fff1}.class-hero:after{content:"";position:absolute;width:130px;height:130px;border:2px solid #fff2;border-radius:34px;right:110px;bottom:-65px;transform:rotate(24deg)}.class-hero>div{position:relative;z-index:1}.class-hero h1{margin-bottom:5px}.class-hero p{margin:0;color:#ffffffcc}.class-meta{display:flex;gap:15px;flex-wrap:wrap;margin-top:14px;font-size:.84rem}.feed{display:flex;flex-direction:column;gap:13px}.feed-item{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:17px;display:grid;grid-template-columns:42px minmax(0,1fr);gap:12px}.feed-type{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);text-transform:uppercase;font-size:.7rem;font-weight:850}.feed-item h3{margin:0 0 4px}.feed-item p{margin:0;color:var(--text-2);word-break:break-word}.module-card{border:1px solid var(--border);border-radius:16px;background:var(--surface);overflow:hidden}.module-head{padding:17px;display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--surface-2)}.module-lessons{padding:8px}.lesson-row{display:flex;align-items:center;gap:11px;padding:11px;border-radius:11px;color:var(--text)}.lesson-row:hover{background:var(--surface-2)}.lesson-row .lesson-icon{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand)}.lesson-row>span:nth-child(2){flex:1}.locked{opacity:.6}.todo-group{margin-bottom:20px}.todo-item{display:grid;grid-template-columns:42px minmax(0,1fr) auto;gap:12px;align-items:center;padding:13px;border-bottom:1px solid var(--border)}.todo-item:last-child{border:0}.todo-date{font-size:.77rem;color:var(--text-2)}
.quiz-shell{max-width:900px;margin:0 auto}.quiz-top{position:sticky;top:calc(var(--topbar) + 8px);z-index:20;background:color-mix(in srgb,var(--surface) 94%,transparent);backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:15px;padding:13px 16px;margin-bottom:16px}.quiz-status{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}.quiz-timer{font-variant-numeric:tabular-nums;font-weight:850;color:var(--danger)}.question-card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:clamp(18px,4vw,30px);margin-bottom:15px}.question-number{color:var(--brand);font-weight:800;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em}.question-text{font-size:1.2rem;font-weight:750;margin:9px 0 20px}.answers{display:flex;flex-direction:column;gap:10px}.answer-card{position:relative;display:flex;gap:12px;align-items:flex-start;border:1px solid var(--border);border-radius:14px;padding:14px;min-height:52px;background:var(--surface-2);cursor:pointer}.answer-card:hover{border-color:var(--brand)}.answer-card input{width:22px;height:22px;min-height:22px;accent-color:var(--brand);flex:0 0 auto;margin-top:1px}.answer-card:has(input:checked){border:2px solid var(--brand);background:var(--brand-soft)}.quiz-navigation{position:sticky;bottom:14px;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px;background:color-mix(in srgb,var(--surface) 94%,transparent);backdrop-filter:blur(12px);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:15px}.save-state{font-size:.78rem;color:var(--text-2)}.save-state.failed{color:var(--danger)}.save-state.saved{color:var(--success)}
.message-layout{height:calc(100vh - var(--topbar) - 76px);min-height:520px;display:grid;grid-template-columns:340px minmax(0,1fr);background:var(--surface);border:1px solid var(--border);border-radius:20px;overflow:hidden}.conversation-list{border-right:1px solid var(--border);overflow-y:auto}.conversation-head{position:sticky;top:0;background:var(--surface);z-index:2;padding:16px;border-bottom:1px solid var(--border)}.conversation-item{display:flex;gap:11px;padding:13px 15px;color:var(--text);border-bottom:1px solid var(--border)}.conversation-item:hover,.conversation-item.active{background:var(--brand-soft)}.conversation-item>div:last-child{min-width:0;flex:1}.conversation-item p{font-size:.8rem;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin:2px 0}.conversation-pane{display:flex;flex-direction:column;min-width:0}.message-head{height:64px;display:flex;align-items:center;gap:11px;padding:0 17px;border-bottom:1px solid var(--border)}.message-scroll{flex:1;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:10px}.message-bubble{max-width:min(78%,560px);padding:10px 13px;border-radius:16px 16px 16px 4px;background:var(--surface-3);align-self:flex-start;word-break:break-word}.message-bubble.mine{background:var(--brand);color:#fff;border-radius:16px 16px 4px 16px;align-self:flex-end}.message-bubble small{display:block;margin-top:4px;color:inherit;opacity:.68;font-size:.68rem}.message-compose{border-top:1px solid var(--border);padding:12px;display:flex;gap:8px;align-items:flex-end}.message-compose textarea{min-height:46px;max-height:130px}.mobile-back{display:none}
.drawer{position:fixed;inset:0;background:#090d1785;z-index:100;display:flex;justify-content:flex-end;opacity:0;pointer-events:none;transition:opacity var(--ease)}.drawer.open{opacity:1;pointer-events:auto}.drawer-panel{height:100%;width:min(430px,100%);background:var(--surface);transform:translateX(100%);transition:transform var(--ease);display:flex;flex-direction:column}.drawer.open .drawer-panel{transform:none}.drawer-head{height:68px;padding:0 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.drawer-head h2{margin:0}.drawer-content{padding:12px;overflow:auto;flex:1}.drawer-actions{padding:12px;border-top:1px solid var(--border)}.notification-item{padding:12px;border-radius:12px;color:var(--text);display:block;margin-bottom:5px}.notification-item.unread{background:var(--brand-soft)}.notification-item p{font-size:.82rem;color:var(--text-2);margin:2px 0}.modal-layer{position:fixed;inset:0;z-index:120;background:#080b147d;display:grid;place-items:center;padding:16px;opacity:0;pointer-events:none;transition:opacity var(--ease)}.modal-layer.open{opacity:1;pointer-events:auto}.modal{width:min(470px,100%);max-height:min(700px,calc(100vh - 32px));overflow:auto;background:var(--surface);border-radius:20px;padding:20px;box-shadow:var(--shadow);transform:translateY(10px) scale(.98);transition:transform var(--ease)}.modal-layer.open .modal{transform:none}.modal-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.modal-head h2{margin:0}.modal p{color:var(--text-2);margin:13px 0 20px}.modal-actions{display:flex;justify-content:flex-end;gap:8px}.toast-region{position:fixed;right:16px;bottom:16px;z-index:200;display:flex;flex-direction:column;gap:8px;width:min(370px,calc(100% - 32px))}.toast{background:var(--text);color:var(--surface);border-radius:13px;padding:12px 14px;box-shadow:var(--shadow);animation:toast-in var(--ease);display:flex;gap:10px}.toast.error{background:var(--danger);color:#fff}.toast.success{background:var(--success);color:#fff}.impersonation-banner{position:sticky;top:0;z-index:200;min-height:58px;background:#f6bc32;color:#251900;display:flex;align-items:center;justify-content:center;gap:18px;padding:7px 14px}.impersonation-banner>span{display:flex;align-items:center;gap:8px}.impersonation-banner+.app-shell .sidebar{top:58px}.impersonation-banner+.app-shell .topbar{top:58px}
.auth-body{background:var(--surface);min-height:100vh}.auth-shell{min-height:100vh;display:grid;grid-template-columns:minmax(340px,.9fr) minmax(460px,1.1fr)}.auth-brand{background:radial-gradient(circle at 15% 15%,#ffffff22 0 4%,transparent 5%),linear-gradient(145deg,#203ca5,var(--brand),var(--brand-2));color:#fff;display:grid;place-items:center;padding:clamp(28px,6vw,80px);position:relative;overflow:hidden}.auth-brand:after{content:"";position:absolute;width:390px;height:390px;border-radius:100px;border:2px solid #fff2;transform:rotate(25deg);right:-190px;bottom:-170px}.auth-brand-inner{max-width:470px;position:relative;z-index:1}.auth-brand .eyebrow{color:#fff9;margin-top:30px}.auth-brand h1{font-size:clamp(2.1rem,5vw,4.2rem);line-height:.98;max-width:520px}.auth-brand p:not(.eyebrow){color:#ffffffc9;font-size:1.05rem;max-width:410px}.auth-pattern{display:flex;gap:8px;margin-top:40px}.auth-pattern span{height:7px;border-radius:8px;background:#fff}.auth-pattern span:nth-child(1){width:72px}.auth-pattern span:nth-child(2){width:28px;opacity:.65}.auth-pattern span:nth-child(3){width:12px;opacity:.4}.auth-panel{display:grid;place-items:center;padding:28px;background:var(--bg)}.auth-card{width:min(470px,100%);background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:clamp(22px,4vw,38px);box-shadow:var(--shadow)}.auth-card h1{font-size:1.8rem}.auth-footer{text-align:center;color:var(--text-2);font-size:.88rem;margin-top:18px}.password-wrap{position:relative}.password-wrap input{padding-right:52px}.password-wrap button{position:absolute;right:3px;top:3px}
.install-body{min-height:100vh;background:linear-gradient(135deg,#f2f5ff,#f8f6ff)}.install-shell{width:min(1100px,calc(100% - 28px));margin:0 auto;padding:24px 0 60px}.install-header{display:flex;align-items:center;gap:11px;margin-bottom:24px}.install-header>div{display:flex;flex-direction:column}.install-header small{color:#626d83}.install-card{background:#fff;border:1px solid #dfe3ee;border-radius:24px;box-shadow:0 22px 65px #2637661c;overflow:hidden;color:#182033}.install-progress{display:grid;grid-template-columns:repeat(8,1fr);border-bottom:1px solid #e3e6ef;background:#fafbfe}.install-step{padding:14px 6px;text-align:center;font-size:.72rem;color:#7c8496;position:relative}.install-step strong{display:grid;place-items:center;width:26px;height:26px;border:1px solid #d4d9e5;border-radius:50%;margin:0 auto 4px;background:#fff}.install-step.active{color:#3157d5;font-weight:750}.install-step.active strong,.install-step.done strong{background:#3157d5;color:#fff;border-color:#3157d5}.install-content{padding:clamp(20px,4vw,38px)}.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.check-item{display:flex;align-items:center;justify-content:space-between;gap:10px;border:1px solid #e1e5ee;border-radius:13px;padding:12px}.check-item strong{font-size:.88rem}.check-status{font-size:.75rem;border-radius:999px;padding:4px 8px;font-weight:750}.check-status.ok{background:#e5f7ef;color:#147a55}.check-status.warning{background:#fff1d6;color:#a05b08}.check-status.error{background:#ffeaed;color:#bd3340}.fingerprint{display:block;background:#101522;color:#dbe4ff;border-radius:12px;padding:13px;word-break:break-all;font:13px ui-monospace,monospace}.nameserver-card{border:1px solid var(--border);border-radius:15px;padding:15px;background:var(--surface-2)}.nameserver{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px;border-bottom:1px solid var(--border);font-family:ui-monospace,monospace}.nameserver:last-child{border:0}
.public-body{min-height:100vh;background:radial-gradient(circle at 15% 5%,color-mix(in srgb,var(--brand) 12%,transparent),transparent 36%),var(--bg);display:grid;place-items:center;padding:24px}.public-shell{width:min(900px,100%)}.public-card{background:var(--surface);border:1px solid var(--border);border-radius:24px;box-shadow:var(--shadow);padding:clamp(24px,5vw,48px);text-align:center}.public-icon{width:74px;height:74px;border-radius:23px;margin:0 auto 18px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand)}.public-icon svg{width:36px;height:36px}.public-card p{color:var(--text-2);max-width:620px;margin-left:auto;margin-right:auto}.certificate-wrap{padding:18px;overflow:auto}.certificate{width:1050px;max-width:none;aspect-ratio:1.414/1;background:#fbfaf6;color:#171717;margin:0 auto;position:relative;padding:72px;border:14px solid #2449a8;outline:3px solid #c9a64c;outline-offset:-30px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;font-family:Georgia,serif}.certificate:before,.certificate:after{content:"";position:absolute;width:120px;height:120px;border:2px solid #c9a64c;transform:rotate(45deg)}.certificate:before{left:-67px;top:-67px}.certificate:after{right:-67px;bottom:-67px}.certificate-school{font-family:ui-sans-serif,system-ui;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:#2449a8}.certificate-title{font-size:3rem;letter-spacing:.08em;margin:30px 0 18px}.certificate-name{font-size:3.4rem;color:#2449a8;border-bottom:2px solid #c9a64c;min-width:620px;padding:0 25px 8px;margin:8px 0 18px}.certificate-course{font-size:1.7rem;font-weight:700}.certificate-signatures{display:flex;justify-content:space-around;width:80%;margin-top:48px}.certificate-signature{min-width:240px;border-top:1px solid #333;padding-top:8px}.certificate-meta{position:absolute;bottom:43px;font:12px ui-monospace,monospace;color:#555}.preview-frame{height:min(78vh,900px);width:100%;border:0;border-radius:12px;background:#fff}.media-player{width:100%;max-height:72vh;background:#000;border-radius:12px}.image-preview{display:block;max-height:72vh;margin:auto;object-fit:contain;border-radius:12px}
.dropzone{border:2px dashed var(--border);border-radius:16px;padding:25px;text-align:center;background:var(--surface-2);transition:border var(--ease),background var(--ease)}.dropzone.dragging{border-color:var(--brand);background:var(--brand-soft)}.dropzone input[type=file]{display:none}.upload-list{display:flex;flex-direction:column;gap:8px;margin-top:12px}.upload-item{display:grid;grid-template-columns:minmax(0,1fr) 120px auto;gap:10px;align-items:center;padding:10px;border:1px solid var(--border);border-radius:11px;background:var(--surface)}.upload-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:.84rem}.upload-progress{height:7px;background:var(--surface-3);border-radius:5px;overflow:hidden}.upload-progress span{display:block;height:100%;background:var(--brand);width:var(--progress,0%)}
.health-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}.health-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px;border:1px solid var(--border);border-radius:13px}.health-item strong{font-size:.88rem}.support-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:16px}.support-thread{min-height:560px;display:flex;flex-direction:column}.support-messages{flex:1;overflow:auto;padding:15px}.support-compose{border-top:1px solid var(--border);padding:13px}.license-card{background:linear-gradient(135deg,#17295e,#3e2b7b);color:#fff;border-radius:20px;padding:20px;position:relative;overflow:hidden}.license-card:after{content:"";position:absolute;width:180px;height:180px;border:35px solid #fff1;border-radius:50%;right:-80px;top:-80px}.license-card p,.license-card small{color:#ffffffbd}.license-card .badge{background:#ffffff20;color:#fff}.license-meta{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:18px 0}.license-meta div{display:flex;flex-direction:column}.license-meta strong{font-size:1.05rem}.print-only{display:none}
@media(max-width:1180px){.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.three-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.split-grid{grid-template-columns:1fr}.support-layout{grid-template-columns:1fr}.support-layout>.card:first-child{order:2}}
@media(max-width:860px){:root{--topbar:62px}.app-shell{display:block}.sidebar{transform:translateX(-105%);width:min(310px,86vw);box-shadow:var(--shadow)}.sidebar.open{transform:none}.main-shell{width:100%}.main-content{padding:18px 14px 92px}.topbar{padding:0 12px}.mobile-only{display:grid}.connection-state span:last-child{display:none}.mobile-nav{position:fixed;z-index:60;display:grid;grid-template-columns:repeat(5,1fr);left:10px;right:10px;bottom:max(10px,env(safe-area-inset-bottom));min-height:65px;background:color-mix(in srgb,var(--surface) 94%,transparent);backdrop-filter:blur(16px);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}.mobile-nav a,.mobile-nav button{border:0;background:transparent;color:var(--text-3);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:.63rem;font-weight:750;min-width:0}.mobile-nav a.active{color:var(--brand)}.mobile-nav svg{width:20px}.page-head{align-items:stretch;flex-direction:column}.page-actions{width:100%}.page-actions .button{flex:1}.form-grid,.form-grid.three{grid-template-columns:1fr}.auth-shell{grid-template-columns:1fr}.auth-brand{display:none}.auth-panel{min-height:100vh;padding:15px}.auth-card{border-radius:19px}.install-progress{overflow-x:auto;display:flex}.install-step{min-width:92px}.check-list{grid-template-columns:1fr}.message-layout{height:calc(100vh - var(--topbar) - 104px);grid-template-columns:1fr}.conversation-pane{display:none}.message-layout.thread-open .conversation-list{display:none}.message-layout.thread-open .conversation-pane{display:flex}.mobile-back{display:grid}.certificate-wrap{padding:8px}.certificate{transform-origin:top left}.impersonation-banner{justify-content:space-between;font-size:.8rem}.impersonation-banner .button{font-size:.73rem;padding:.45rem .6rem}.impersonation-banner+.app-shell .topbar{top:58px}}
@media(max-width:640px){.stats-grid,.three-grid{grid-template-columns:1fr 1fr;gap:9px}.stat-card{padding:14px}.stat-value{font-size:1.45rem}.card{padding:15px;border-radius:16px}.global-search{max-width:none}.top-actions .connection-state{display:none}.table-wrap.mobile-cards{border:0;background:transparent;overflow:visible}.table-wrap.mobile-cards table{display:none}.responsive-cards{display:flex;flex-direction:column;gap:10px}.responsive-card{border:1px solid var(--border);background:var(--surface);border-radius:14px;padding:14px}.responsive-card dl{display:grid;grid-template-columns:110px minmax(0,1fr);gap:8px;margin:12px 0}.responsive-card dt{font-size:.74rem;color:var(--text-3);text-transform:uppercase}.responsive-card dd{margin:0;word-break:break-word}.form-actions{position:sticky;bottom:80px;background:var(--surface);padding:11px;border:1px solid var(--border);border-radius:13px;z-index:10}.form-actions .button{flex:1}.tabs{margin-inline:-4px}.class-hero{min-height:180px;padding:20px}.todo-item{grid-template-columns:38px minmax(0,1fr)}.todo-item>.button{grid-column:2}.quiz-top{top:6px}.quiz-navigation{bottom:82px}.message-bubble{max-width:88%}.drawer-panel{width:100%}.modal-layer{align-items:end;padding:0}.modal{width:100%;max-height:88vh;border-radius:22px 22px 0 0;padding-bottom:max(20px,env(safe-area-inset-bottom))}.toast-region{bottom:90px}.upload-item{grid-template-columns:minmax(0,1fr) auto}.upload-progress{grid-column:1/-1;grid-row:2}.license-meta{grid-template-columns:1fr}.preview-frame{height:68vh}}
@media(max-width:380px){.stats-grid{grid-template-columns:1fr}.topbar{gap:7px}.global-search{padding:0 9px}.icon-button{width:42px}.page-actions{flex-direction:column}.page-actions .button{width:100%}.responsive-card dl{grid-template-columns:92px minmax(0,1fr)}.mobile-nav{left:5px;right:5px}}
@media print{.sidebar,.topbar,.mobile-nav,.page-actions,.button,.tabs,.impersonation-banner,.no-print{display:none!important}.app-shell,.main-shell{display:block}.main-content{padding:0}.card,.table-wrap{box-shadow:none;border-color:#bbb}.print-only{display:block}.print-body{background:#fff;color:#111}.certificate-wrap{padding:0;overflow:visible;height:auto!important}.certificate{width:277mm;height:190mm;aspect-ratio:auto;page-break-inside:avoid;transform:none!important}@page{margin:12mm;size:auto}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}
@keyframes spin{to{transform:rotate(360deg)}}@keyframes shimmer{to{background-position:-200% 0}}@keyframes pulse{50%{opacity:.45}}@keyframes toast-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.brand-logo{width:100%;height:100%;object-fit:contain;background:#fff;padding:3px}.floating-editor{position:absolute;right:20px;z-index:30;width:min(580px,calc(100vw - 30px));margin-top:8px}.lesson-content{word-break:break-word}.lesson-content table{display:block;overflow:auto}.lesson-content pre{white-space:pre-wrap;overflow-wrap:anywhere}.badge-count{min-width:20px;height:20px;border-radius:10px;background:var(--danger);color:#fff;font-size:.7rem;display:grid;place-items:center;padding:0 5px}
@media(max-width:640px){.floating-editor{position:fixed;inset:0;width:100%;height:100%;overflow:auto;border-radius:0;margin:0;padding:18px;z-index:110}.page-actions details{flex:1}.page-actions summary{width:100%}}
.upload-item-main{min-width:0;display:grid;grid-template-columns:minmax(0,1fr) 120px auto;gap:10px;align-items:center}.upload-actions{display:flex;gap:6px;justify-content:flex-end;flex-wrap:wrap}.upload-item.success{border-color:color-mix(in srgb,var(--success) 42%,var(--border))}.upload-item.failed{border-color:color-mix(in srgb,var(--danger) 52%,var(--border))}.upload-overall{margin-top:14px;padding:12px;border-radius:12px;background:var(--surface-2)}
@media(max-width:640px){.upload-item{display:flex;align-items:flex-start;flex-direction:column}.upload-item-main{width:100%;grid-template-columns:minmax(0,1fr) auto}.upload-item-main .upload-progress{grid-column:1/-1;grid-row:2}.upload-actions{width:100%;justify-content:flex-start}}
.profile-preview{width:92px;height:92px;border-radius:24px;object-fit:cover;border:1px solid var(--border);box-shadow:var(--shadow-sm);background:var(--surface-2)}
.reminder-picker{border:1px solid var(--border);border-radius:14px;padding:12px 14px;margin:12px 0 16px;background:var(--surface-2);min-width:0}.reminder-picker legend{padding:0 6px;font-weight:800;color:var(--text)}.reminder-picker p{margin-bottom:5px}.reminder-picker .field{max-width:240px;margin-bottom:0}

/* Keep the existing layout inside the available viewport, including long data. */
.global-search,.brand-mark{min-width:0}.brand-mark{flex-shrink:0}
.top-actions,.icon-button{flex-shrink:0}
.form-grid,.form-grid>.field,.split-grid>*,.three-grid>*,.card,.install-content{min-width:0}
.table-wrap{max-width:100%;overscroll-behavior-inline:contain}
.page-head>div,.card-header>div,.row-between>div,.check-item>div{min-width:0}
.responsive-card,.metric-line,.health-item,.check-item,.nameserver,.page-head h1,.lesson-content{overflow-wrap:anywhere}
.sidebar-backdrop{display:none}
.message-layout,.conversation-pane,.message-scroll{min-height:0}
@media(max-width:860px){
  .sidebar-backdrop:not([hidden]){display:block;position:fixed;inset:0;background:#090d1785;z-index:65}
  body.nav-open{overflow:hidden}
  .sidebar{height:100vh;height:100dvh;padding-bottom:max(18px,env(safe-area-inset-bottom))}
  .side-nav{min-height:0;flex:1}.sidebar-footer{flex-shrink:0}
  .main-content{padding-bottom:calc(96px + env(safe-area-inset-bottom))}
  .message-layout{height:calc(100vh - var(--topbar) - 150px);height:calc(100dvh - var(--topbar) - 150px - env(safe-area-inset-bottom));min-height:260px}
  .message-compose{flex-shrink:0}.message-head{height:auto;min-height:64px;flex-shrink:0}
  .form-actions{flex-wrap:wrap}
}
@media(max-width:640px){
  .three-grid{grid-template-columns:minmax(0,1fr)}
  .card-header,.row-between,.metric-line,.health-item,.check-item,.nameserver{flex-wrap:wrap}
  .row{flex-wrap:wrap}.row>.field{flex-basis:100%!important;min-width:0}
  .table-actions{flex-wrap:wrap}
  .button{white-space:normal;text-align:center;max-width:100%}
  .form-actions .button{flex:1 1 140px}
  .install-body .form-actions,.auth-body .form-actions,.public-body .form-actions{position:static}
  .install-shell{width:calc(100% - 20px);padding-top:14px}
  .install-content{padding:18px 14px}.install-card{border-radius:18px}
  .install-step{min-width:76px}.check-status{flex-shrink:0}
  input,select,textarea{font-size:16px}
  .quiz-status,.quiz-navigation{flex-wrap:wrap}
  .quiz-navigation{bottom:calc(82px + env(safe-area-inset-bottom))}
  .question-card{scroll-margin-top:80px}
  .floating-editor{height:100vh;height:100dvh;padding-bottom:calc(22px + env(safe-area-inset-bottom))}
  .floating-editor form{max-width:100%}
  .floating-editor .button{margin-top:4px}
  .editor-close{position:sticky;top:0;margin-left:auto;z-index:2;background:var(--surface)}
  .topbar{gap:8px}.top-actions{gap:2px}.global-search{padding-inline:8px;gap:5px}
  .public-body{padding:12px}.public-card{padding:24px 18px}
  .auth-panel{min-height:100vh;min-height:100dvh}
}