:root{--color-bg:#f3f4f8;--color-surface:#fff;--color-border:#e3e6ee;--color-text:#1c2333;--color-text-muted:#6b7280;--color-primary:#2b5fe0;--color-primary-dark:#1e46b3;--color-sidebar-bg:#131a2c;--color-sidebar-text:#b7bfd6;--color-sidebar-text-active:#fff;--color-success:#16a34a;--color-warning:#d97706;--color-danger:#dc2626;--color-info:#2563eb;--radius:10px;--shadow-card:0 1px 2px #14182a0f, 0 1px 6px #14182a0a;font-family:Pretendard,-apple-system,BlinkMacSystemFont,Segoe UI,Malgun Gothic,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%}body{background:var(--color-bg);color:var(--color-text);margin:0;font-size:14px;line-height:1.5}a{color:inherit;text-decoration:none}button{font-family:inherit}.app-shell{min-height:100vh;display:flex}.sidebar{background:var(--color-sidebar-bg);width:240px;color:var(--color-sidebar-text);flex-direction:column;flex-shrink:0;padding:20px 0;display:flex}.sidebar-brand{color:#fff;border-bottom:1px solid #ffffff14;margin-bottom:12px;padding:0 20px 20px;font-size:18px;font-weight:700}.sidebar-brand span{color:var(--color-sidebar-text);margin-top:2px;font-size:11px;font-weight:400;display:block}.sidebar-nav{flex-direction:column;gap:2px;padding:0 12px;display:flex}.sidebar-link{color:var(--color-sidebar-text);border-radius:8px;justify-content:space-between;align-items:center;gap:10px;padding:10px 12px;font-size:14px;display:flex}.sidebar-link:hover{color:#fff;background:#ffffff0f}.sidebar-link.active{background:var(--color-primary);color:#fff}.sidebar-link.disabled{color:#b7bfd673;cursor:default}.soon-badge{color:#ffffff80;background:#ffffff14;border-radius:999px;padding:2px 6px;font-size:10px;font-weight:700}.sidebar-footer{border-top:1px solid #ffffff14;margin-top:auto;padding:12px 20px 0;font-size:12px}.main-area{flex-direction:column;flex:1;min-width:0;display:flex}.topbar{background:var(--color-surface);border-bottom:1px solid var(--color-border);justify-content:space-between;align-items:center;height:60px;padding:0 24px;display:flex}.topbar h1{margin:0;font-size:17px}.topbar-user{color:var(--color-text-muted);align-items:center;gap:12px;font-size:13px;display:flex}.content{flex:1;padding:24px}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-card);margin-bottom:20px;padding:20px}.card-title{margin:0 0 14px;font-size:15px;font-weight:600}.summary-grid{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:20px;display:grid}.summary-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow-card);padding:16px 18px}.summary-card .label{color:var(--color-text-muted);margin-bottom:6px;font-size:12px}.summary-card .value{font-size:24px;font-weight:700}.summary-card .value.danger{color:var(--color-danger)}.summary-card .value.warning{color:var(--color-warning)}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:13.5px}thead th{text-align:left;border-bottom:1px solid var(--color-border);color:var(--color-text-muted);white-space:nowrap;padding:10px 12px;font-weight:600}tbody td{border-bottom:1px solid var(--color-border);white-space:nowrap;padding:10px 12px}tbody tr:hover{background:#f8f9fc}.badge{white-space:nowrap;border-radius:999px;align-items:center;padding:3px 9px;font-size:12px;font-weight:600;display:inline-flex}.badge-success{color:var(--color-success);background:#e7f7ed}.badge-warning{color:var(--color-warning);background:#fef3e2}.badge-danger{color:var(--color-danger);background:#fce8e8}.badge-info{color:var(--color-info);background:#e8effe}.badge-muted{color:var(--color-text-muted);background:#eef0f4}.form-section{margin-bottom:24px}.form-section-title{border-bottom:2px solid var(--color-text);margin:0 0 4px;padding-bottom:8px;font-size:14px;font-weight:700}.form-section-desc{color:var(--color-text-muted);margin-bottom:12px;font-size:12px}.form-grid{grid-template-columns:repeat(2,1fr);gap:14px 18px;display:grid}.form-grid.cols-3{grid-template-columns:repeat(3,1fr)}.field{flex-direction:column;gap:5px;display:flex}.field.span-2{grid-column:span 2}.field.span-3{grid-column:span 3}.field label{color:var(--color-text);font-size:12.5px;font-weight:600}.field label .required{color:var(--color-danger);margin-left:2px}.field .hint{color:var(--color-text-muted);font-size:11.5px}.field .error-text{color:var(--color-danger);font-size:11.5px}input[type=text],input[type=email],input[type=password],input[type=number],input[type=date],input[type=time],input[type=url],input[type=tel],select,textarea{border:1px solid var(--color-border);color:var(--color-text);background:#fff;border-radius:8px;width:100%;padding:8px 11px;font-family:inherit;font-size:13.5px}input:focus,select:focus,textarea:focus{border-color:var(--color-primary);outline:none;box-shadow:0 0 0 3px #2b5fe01f}textarea{resize:vertical;min-height:70px}.radio-option-group{margin-top:14px;margin-bottom:16px}.radio-option-group-title{color:var(--color-text);margin-bottom:8px;font-size:12.5px;font-weight:600}.radio-option-list{flex-direction:column;gap:10px;display:flex}.radio-option{border:1px solid var(--color-border);color:var(--color-text);cursor:pointer;border-radius:8px;align-items:center;gap:10px;padding:10px 14px;font-size:13.5px;font-weight:400;display:flex}.radio-option:hover{background:#f4f6fb}.radio-option input[type=radio]{flex-shrink:0;width:16px;height:16px;margin:0}.checkbox-row{align-items:center;gap:8px;display:flex}.btn{cursor:pointer;border:1px solid #0000;border-radius:8px;justify-content:center;align-items:center;gap:6px;padding:8px 16px;font-size:13.5px;font-weight:600;transition:opacity .15s;display:inline-flex}.btn:disabled{opacity:.5;cursor:not-allowed}.btn:hover:not(:disabled){opacity:.9}.btn-primary{background:var(--color-primary);color:#fff}.btn-secondary{color:var(--color-text);border-color:var(--color-border);background:#fff}.btn-danger{color:var(--color-danger);background:#fff;border-color:#f3c8c8}.btn-ghost{color:var(--color-text-muted);background:0 0}.btn-sm{padding:5px 10px;font-size:12.5px}.btn-row{align-items:center;gap:10px;display:flex}.toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.filters{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.filters select,.filters input{width:auto;min-width:140px}.login-page{background:linear-gradient(160deg,#131a2c,#1e2c4f);justify-content:center;align-items:center;min-height:100vh;display:flex}.login-card{background:#fff;border-radius:14px;width:380px;padding:36px 32px;box-shadow:0 20px 60px #0000004d}.login-card h1{margin:0 0 4px;font-size:20px}.login-card p.subtitle{color:var(--color-text-muted);margin:0 0 24px;font-size:13px}.login-card .field{margin-bottom:14px}.login-error{color:var(--color-danger);background:#fce8e8;border-radius:8px;margin-bottom:14px;padding:10px 12px;font-size:13px}.login-info{color:var(--color-info);background:#e8effe;border-radius:8px;margin-bottom:14px;padding:10px 12px;font-size:13px}.login-success{color:var(--color-success);background:#e7f7ed;border-radius:8px;margin-bottom:14px;padding:10px 12px;font-size:13px}.empty-state,.loading-state{text-align:center;color:var(--color-text-muted);padding:40px 0;font-size:13.5px}.text-muted{color:var(--color-text-muted)}.mono{font-family:SF Mono,Consolas,monospace;font-size:12.5px}.tabs{border-bottom:1px solid var(--color-border);gap:4px;margin-bottom:18px;display:flex}.tab-btn{color:var(--color-text-muted);cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000;padding:10px 16px;font-size:13.5px;font-weight:600}.tab-btn.active{color:var(--color-primary);border-bottom-color:var(--color-primary)}.schedule-list{flex-direction:column;gap:10px;display:flex}.schedule-item{border:1px solid var(--color-border);border-radius:var(--radius);align-items:center;gap:14px;padding:12px 14px;display:flex}.schedule-item .time{flex-shrink:0;width:100px;font-size:14px;font-weight:700}.schedule-item .info{flex:1;min-width:0}.schedule-item .info .title{white-space:normal;align-items:center;gap:8px;font-size:14px;font-weight:600;display:flex}.schedule-item .info .meta{color:var(--color-text-muted);margin-top:4px;font-size:12px}.type-badge{background:var(--color-primary);color:#fff;border-radius:999px;padding:2px 8px;font-size:11px;font-weight:700}.type-badge.level_test,.type-badge.demo{color:var(--color-warning);background:#fef3e2}.type-badge.makeup{color:var(--color-success);background:#e6f4ea}.type-badge.rescheduled{color:#6a3fd6;background:#eae6fb}.join-col{flex-direction:column;flex-shrink:0;align-items:flex-end;gap:6px;display:flex}.join-col .countdown{color:var(--color-text-muted);font-size:11px}.join-btn{min-width:110px;color:var(--color-text-muted);background:#eef0f4;border-color:#0000}.join-btn.join{background:var(--color-primary);color:#fff}.join-btn.ongoing{background:var(--color-success);color:#fff}.join-btn.done{color:var(--color-text-muted);background:#eef0f4}.join-btn.waiting{color:var(--color-primary);border:1px solid var(--color-primary);background:#fff}.join-btn.waiting:hover{background:#f0f5ff}.join-btn.unknown{color:#b3b9c6;background:#f4f5f8}.dash-logic-hint{border:1px dashed var(--color-border);border-radius:var(--radius);color:var(--color-text-muted);background:#f8f9fc;flex-wrap:wrap;align-items:center;gap:6px;margin-top:14px;padding:12px 14px;font-size:12px;display:flex}.logic-pill{color:#fff;border-radius:999px;padding:2px 8px;font-size:10.5px;font-weight:700}.logic-pill.join{background:var(--color-primary)}.logic-pill.ongoing{background:var(--color-success)}.logic-pill.done{color:#4b5568;background:#cbd2e0}.dash-hero{color:#fff;background:linear-gradient(120deg,#0f172a,#1e293b);border-radius:20px;margin-bottom:20px;padding:24px 28px}.dash-hero-top{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.dash-hero h2{margin:0;font-size:21px}.dash-hero p{color:#fff9;margin:6px 0 0;font-size:13px}.dash-stat-row{gap:10px;display:flex}.dash-stat{text-align:center;background:#ffffff1a;border-radius:12px;min-width:92px;padding:10px 16px}.dash-stat .label{color:#fff9;font-size:11px}.dash-stat .value{margin-top:2px;font-size:17px;font-weight:700}.dash-stat.highlight{background:var(--color-primary)}.dash-stat.highlight .label{color:#ffffffd9}.dash-body{grid-template-columns:1.6fr 1fr;align-items:start;gap:20px;display:grid}.dash-schedule-head{justify-content:space-between;align-items:center;margin-bottom:14px;display:flex}.dash-schedule-head h3{margin:0;font-size:15px}.dash-notif-card{color:#fff;border-radius:var(--radius);background:#0f172a;margin-bottom:20px;padding:16px}.dash-notif-title{margin-bottom:10px;font-size:12.5px;font-weight:700}.dash-notif-list{flex-direction:column;gap:8px;display:flex}.dash-notif-item{background:#ffffff1a;border-radius:8px;padding:10px 12px;font-size:12.5px;line-height:1.5}.dash-notif-item span{color:#ffffff80;margin-top:2px;font-size:11px;display:block}.dash-notif-empty{color:#ffffff80;font-size:12.5px}@media (width<=860px){.dash-body{grid-template-columns:1fr}}.avail-grid{grid-template-columns:70px repeat(7,1fr);gap:3px;font-size:12px;display:grid}.avail-grid .head{text-align:center;color:var(--color-text-muted);padding:6px 0;font-weight:700}.avail-grid .time-label{color:var(--color-text-muted);text-align:right;padding:4px 6px}.avail-cell{cursor:pointer;background:#eef0f4;border:none;border-radius:4px;height:24px}.avail-cell.selected{background:var(--color-primary)}.avail-cell:hover{opacity:.75}.leave-balance-grid{grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:20px;display:grid}.leave-balance-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);text-align:center;box-shadow:var(--shadow-card);padding:18px}.leave-balance-card .label{color:var(--color-text-muted);margin-bottom:8px;font-size:12.5px}.leave-balance-card .value{color:var(--color-primary);font-size:28px;font-weight:700}.leave-balance-card .value span{color:var(--color-text-muted);font-size:14px;font-weight:500}.deduction-preview{border:1px dashed var(--color-border);border-radius:var(--radius);background:#f8f9fc;margin:14px 0;padding:14px;font-size:13px}.cal-nav{align-items:center;gap:8px;font-size:13.5px;font-weight:700;display:flex}.cal-nav button{border:1px solid var(--color-border);cursor:pointer;background:#fff;border-radius:50%;width:26px;height:26px;font-size:14px}.cal-nav button:hover{background:#f4f6fb}.cal-body{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:20px;display:grid}@media (width<=860px){.cal-body{grid-template-columns:1fr}}.cal-weekdays{color:var(--color-text-muted);grid-template-columns:repeat(7,1fr);margin-bottom:6px;font-size:11px;font-weight:700;display:grid}.cal-weekdays>div{text-align:center;padding:4px 0}.cal-grid{grid-template-columns:repeat(7,1fr);gap:4px;display:grid}.cal-cell{aspect-ratio:1;border:1px solid var(--color-border);cursor:pointer;background:#fff;border-radius:8px;flex-direction:column;justify-content:center;align-items:center;gap:4px;padding:4px;font-size:12.5px;display:flex}.cal-cell.empty{visibility:hidden;cursor:default;border:none}.cal-cell:hover:not(.empty){border-color:var(--color-primary)}.cal-cell.today{border-color:var(--color-primary);font-weight:800}.cal-cell.selected{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.cal-dot-row{gap:3px;height:6px;display:flex}.cal-dot{background:var(--color-primary);border-radius:50%;width:5px;height:5px}.cal-cell.selected .cal-dot{opacity:.85;background:#fff}.cal-side{border:1px solid var(--color-border);background:#f4f6fb;border-radius:14px;padding:14px}.cal-side-head{margin-bottom:10px}.cal-side-head strong{font-size:13.5px}.cal-side-head .count{color:var(--color-primary)}.cal-event-item{border:1px solid var(--color-border);background:#fff;border-radius:10px;align-items:center;gap:10px;margin-bottom:8px;padding:10px 12px;display:flex}.cal-event-item:last-child{margin-bottom:0}.cal-event-item .time{color:var(--color-text-muted);flex-shrink:0;width:42px;font-size:12px;font-weight:800}.cal-event-item .info{flex:1;min-width:0}.cal-event-item .info .row{align-items:center;gap:6px;display:flex}.cal-event-item .info .title{white-space:nowrap;text-overflow:ellipsis;font-size:12.5px;font-weight:700;overflow:hidden}.cal-event-item .info .meta{color:var(--color-text-muted);margin-top:3px;font-size:11px}.cal-empty{text-align:center;color:var(--color-text-muted);padding:24px 0;font-size:12.5px}.students-layout{grid-template-columns:280px 1fr;align-items:start;gap:20px;display:grid}@media (width<=860px){.students-layout{grid-template-columns:1fr}}.class-tree{flex-direction:column;gap:14px;display:flex}.class-group-title{color:var(--color-text-muted);text-transform:uppercase;margin-bottom:6px;font-size:11.5px;font-weight:700}.class-item{cursor:pointer;text-align:left;background:0 0;border:1px solid #0000;border-radius:8px;justify-content:space-between;align-items:center;gap:8px;width:100%;margin-bottom:2px;padding:9px 12px;font-size:13.5px;display:flex}.class-item:hover{background:#f4f6fb}.class-item.selected{background:var(--color-primary);color:#fff}.class-item .count{color:inherit;opacity:.7;font-size:11.5px}.msg-history{border:1px solid var(--color-border);background:#fafbfe;border-radius:10px;flex-direction:column;gap:8px;max-height:300px;padding:10px;display:flex;overflow-y:auto}.msg-item{background:#f4f6fb;border-radius:10px;padding:10px 12px}.msg-row{display:flex}.msg-row.mine{justify-content:flex-end}.msg-row .msg-bubble{border:1px solid var(--color-border);background:#fff;border-radius:10px;max-width:78%;padding:9px 12px}.msg-row.mine .msg-bubble{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.msg-row.mine .msg-meta{color:#fffc}.msg-content{white-space:pre-wrap;word-break:break-word;font-size:13px}.msg-meta{color:var(--color-text-muted);margin-top:6px;font-size:11px}.modal-backdrop{z-index:50;background:#0f142380;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal-card{background:#fff;border-radius:12px;width:420px;max-width:90vw;max-height:85vh;padding:22px;overflow-y:auto;box-shadow:0 20px 60px #00000040}.modal-card h2{margin:0 0 6px;font-size:16px}.room-shell{color:#fff;z-index:100;background:#16161a;flex-direction:column;display:flex;position:fixed;inset:0}.room-header{color:#ffffffd9;background:#1d1d22;border-bottom:1px solid #ffffff14;flex-shrink:0;justify-content:space-between;align-items:center;height:52px;padding:0 18px;font-size:13px;display:flex}.room-header-left,.room-header-right{align-items:center;gap:10px;display:flex}.room-logo{letter-spacing:.3px;color:#7c9cff;font-size:14px;font-weight:800}.room-title{font-weight:600}.room-header-chip{color:#ffffffbf;background:#ffffff14;border-radius:999px;padding:3px 10px;font-size:11.5px}.room-header-chip.rec{color:#ff6b6f;background:#e5484d2e;font-weight:700}.room-preview-badge{color:#ffc400;background:#ffc40026;border-radius:999px;padding:3px 10px;font-size:11px;font-weight:700}.room-timer{font-variant-numeric:tabular-nums;color:#fff9}.room-body{flex:1;min-height:0;display:flex}.room-main{flex-direction:column;flex:1.8;min-width:0;padding:14px 10px 90px 14px;display:flex}.room-main-slot{flex:1;min-height:0;display:flex}.room-screen-view{flex:1;min-height:0;padding-top:14px;display:flex}.room-screen-view .pt-tile{aspect-ratio:auto;width:100%;height:100%}.room-side{border-left:1px solid #ffffff14;flex-direction:column;flex:1;min-width:300px;max-width:380px;padding-bottom:90px;display:flex}.pt-panel{border-bottom:1px solid #ffffff14;flex-direction:column;flex-shrink:0;max-height:42%;padding:12px 14px;display:flex}.pt-header{justify-content:space-between;align-items:center;margin-bottom:10px;font-size:13px;font-weight:700;display:flex}.pt-view-toggle{color:#ffffffb3;cursor:pointer;background:#ffffff0f;border:none;border-radius:999px;padding:3px 9px;font-size:11px}.pt-grid{grid-template-columns:repeat(2,1fr);gap:8px;display:grid;overflow-y:auto}.pt-grid.list{flex-direction:column;display:flex}.pt-tile{aspect-ratio:4/3;background:#2c2c31;border:1.5px solid #0000;border-radius:8px;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.pt-tile.host{border-color:#7c9cff}.pt-tile video{object-fit:cover;width:100%;height:100%}.pt-tile-empty{color:#fff6;font-size:11px}.pt-tile-badges{flex-wrap:wrap;gap:4px;display:flex;position:absolute;top:6px;left:6px}.pt-badge{border-radius:999px;padding:2px 7px;font-size:10px;font-weight:700}.pt-badge.host{color:#10131f;background:#7c9cffd9}.pt-badge.hand{color:#2a1f00;background:#ffc400e6}.pt-tile-label{color:#fff;background:#0000008c;border-radius:999px;align-items:center;gap:4px;padding:2px 7px;font-size:10.5px;display:flex;position:absolute;bottom:5px;left:6px}.chat-panel{flex-direction:column;flex:1;min-height:0;display:flex}.chat-header{border-bottom:1px solid #ffffff0f;flex-shrink:0;justify-content:space-between;align-items:center;padding:12px 14px;font-size:13px;font-weight:700;display:flex}.chat-export{color:#ffffffb3;cursor:pointer;background:#ffffff0f;border:none;border-radius:999px;padding:3px 9px;font-size:11px}.chat-export:disabled{opacity:.4;cursor:not-allowed}.chat-messages{flex-direction:column;flex:1;gap:8px;min-height:0;padding:10px 14px;display:flex;overflow-y:auto}.chat-empty{color:#ffffff59;text-align:center;margin-top:20px;font-size:12px}.chat-system{color:#fff6;align-self:center;font-size:11px}.chat-bubble-row{display:flex}.chat-bubble-row.self{justify-content:flex-end}.chat-bubble{background:#2c2c31;border-radius:10px;max-width:80%;padding:7px 10px}.chat-bubble-row.self .chat-bubble{background:#3b5bdb}.chat-bubble-name{color:#7c9cff;margin-bottom:2px;font-size:10.5px;font-weight:700}.chat-bubble-text{word-break:break-word;font-size:12.5px;line-height:1.4}.chat-bubble-time{color:#ffffff73;text-align:right;margin-top:3px;font-size:9.5px}.chat-input-row{border-top:1px solid #ffffff0f;flex-shrink:0;gap:8px;padding:10px 14px;display:flex}.chat-input-row input{color:#fff;background:#2c2c31;border:1px solid #ffffff1a;border-radius:999px;outline:none;flex:1;padding:8px 14px;font-size:12.5px}.chat-input-row input:disabled{opacity:.5}.chat-input-row button{color:#fff;cursor:pointer;background:#3b5bdb;border:none;border-radius:50%;flex-shrink:0;width:34px;height:34px}.chat-input-row button:disabled{opacity:.4;cursor:not-allowed}.wb-panel{background:#202024;border-radius:12px;flex-direction:column;flex:1;min-height:0;display:flex;overflow:hidden}.wb-header{border-bottom:1px solid #ffffff0f;flex-shrink:0;align-items:center;gap:10px;padding:10px 14px;display:flex}.wb-title{font-size:13px;font-weight:700}.wb-tag{border-radius:999px;padding:2px 8px;font-size:10.5px;font-weight:700}.wb-tag.live{color:#4ade80;background:#40c0782e}.wb-tag.view{color:#fff9;background:#ffffff14}.wb-toolbar{border-bottom:1px solid #ffffff0f;flex-wrap:wrap;flex-shrink:0;gap:6px;padding:8px 14px;display:flex}.wb-tool{color:#ffffffbf;cursor:pointer;background:#ffffff0f;border:none;border-radius:8px;padding:5px 10px;font-size:11.5px}.wb-tool.active{color:#fff;background:#3b5bdb}.wb-canvas-wrap{flex:1;min-height:0;position:relative}.wb-canvas-wrap canvas{touch-action:none;cursor:crosshair;width:100%;height:100%}.wb-placeholder{text-align:center;color:#ffffff59;justify-content:center;align-items:center;padding:20px;font-size:12.5px;line-height:1.6;display:flex;position:absolute;inset:0}.wb-disclaimer{color:#ffc400;background:#ffc40014;flex-shrink:0;padding:6px 14px;font-size:10.5px}.room-toolbar{background:#18181cf2;border:1px solid #ffffff0f;border-radius:999px;gap:10px;padding:10px 14px;display:flex;position:fixed;bottom:20px;left:50%;transform:translate(-50%);box-shadow:0 8px 30px #0006}.room-btn{color:#fff;cursor:pointer;background:#3a3a3c;border:none;border-radius:50%;justify-content:center;align-items:center;width:46px;height:46px;font-size:17px;display:flex}.room-btn:hover:not(:disabled){background:#4a4a4c}.room-btn:disabled{opacity:.5;cursor:not-allowed}.room-btn.off,.room-btn.leave{background:#e5484d}.room-btn.leave:hover{background:#c93a3e}.room-btn.active{background:#3b5bdb}.room-btn.active.rec{background:#e5484d}.room-status-screen{color:#fff;z-index:100;text-align:center;background:#1a1a1a;flex-direction:column;justify-content:center;align-items:center;gap:18px;font-size:14px;line-height:1.6;display:flex;position:fixed;inset:0}.q-editor{width:720px;max-width:94vw;max-height:88vh;overflow-y:auto}.q-block{border:1px solid var(--color-border);background:#fafbfe;border-radius:10px;margin-bottom:14px;padding:16px}.q-block-head{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.q-block-title{font-size:13.5px;font-weight:700}.q-attach-row{margin-top:6px}.q-attach{align-items:center;display:inline-flex}.q-attach label.btn{cursor:pointer;margin:0}.q-thumb-wrap{align-items:center;gap:8px;display:inline-flex}.q-thumb{border:1px solid var(--color-border);object-fit:cover;border-radius:6px;width:64px;height:64px}.q-thumb.sm{object-fit:contain;background:#f7f8fc;width:240px;height:240px}.q-thumb.lg{width:auto;max-width:320px;height:auto;max-height:200px}.q-choice-head{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.q-choice-controls{align-items:center;gap:8px;display:flex}.q-inline{align-items:center;gap:4px;font-size:12.5px;font-weight:400;display:inline-flex}.q-inline input[type=radio],.q-inline input[type=checkbox]{width:auto}.q-choice-list{flex-direction:column;gap:8px;display:flex}.q-choice-row{align-items:center;gap:8px;display:flex}.q-choice-row input[type=text]{flex:1}.q-choice-row.correct input[type=text]{border-color:var(--color-success);background:#f0fbf4}.q-correct-btn{cursor:pointer;border:1px solid var(--color-border);width:44px;height:34px;color:var(--color-text-muted);background:#fff;border-radius:6px;flex-shrink:0;font-size:12px}.q-correct-btn.on{background:var(--color-success);border-color:var(--color-success);color:#fff;font-weight:700}.q-difficulty{flex-wrap:wrap;gap:14px;display:flex}.q-list-preview{text-overflow:ellipsis;white-space:nowrap;max-width:320px;color:var(--color-text-muted);overflow:hidden}.q-preview-stimulus{border:1px solid var(--color-border);white-space:pre-wrap;background:#fafbfe;border-radius:8px;margin-bottom:14px;padding:12px 14px;line-height:1.55}.q-preview-question{border-top:1px solid var(--color-border);padding:14px 0}.q-preview-qtext{margin-bottom:10px;font-weight:600}.q-preview-choices{flex-direction:column;gap:8px;display:flex}.q-preview-choice{border:1px solid var(--color-border);border-radius:8px;align-items:center;gap:8px;padding:8px 12px;font-size:13.5px;display:flex}.q-preview-choice.correct{border-color:var(--color-success);background:#f0fbf4}.q-preview-num{color:var(--color-primary);font-weight:700}.q-preview-explain{color:var(--color-text-muted);margin-top:8px;font-size:12.5px}.asg-submission-text{border:1px solid var(--color-border);white-space:pre-wrap;background:#fff;border-radius:8px;min-height:40px;padding:10px 12px;font-size:13.5px;line-height:1.6}.dash-notif-item.ann-row{text-align:left;cursor:pointer;width:100%;color:inherit;font:inherit;border:none;display:block}.dash-notif-item.ann-row:hover{background:#ffffff2e}.ann-content{white-space:pre-wrap;font-size:13.5px;line-height:1.7}