.toast-container{position:fixed;top:18px;right:18px;z-index:200;display:flex;flex-direction:column;gap:12px;width:calc(100vw - 36px);max-width:420px;pointer-events:none}.toast{--toast-accent: var(--danger);--toast-track: #26272e;--toast-surface: #0e0f14;--toast-text: #f3f4f7;--toast-text-dim: rgba(243, 244, 247, .55);--toast-shadow: rgba(0, 0, 0, .45);--toast-ms: 3s;pointer-events:auto;position:relative;display:flex;align-items:center;gap:14px;min-height:68px;padding:18px 20px;background:var(--toast-surface);color:var(--toast-text);border:none;border-radius:14px;box-shadow:0 12px 34px var(--toast-shadow);cursor:pointer;animation:toast-in .26s cubic-bezier(.22,1,.36,1)}.toast--error{--toast-accent: var(--danger)}.toast--warning{--toast-accent: var(--warn)}.toast--success{--toast-accent: var(--ok)}.toast--info{--toast-accent: var(--accent)}.toast--leaving{animation:toast-out .24s ease forwards}.toast-timer{position:absolute;inset:0;pointer-events:none;overflow:visible}.toast-timer rect,.toast-timer path{fill:none;stroke-width:3}.toast-timer-track{stroke:var(--toast-track)}.toast-timer-bar{stroke:var(--toast-accent);stroke-dasharray:100;stroke-dashoffset:0;stroke-linecap:round}.toast-icon,.toast-body,.toast-close{position:relative;z-index:1}.toast-icon{flex:0 0 auto;width:24px;height:24px;color:var(--toast-accent)}.toast-body{flex:1 1 auto;font-size:15px;font-weight:500;line-height:1.45;word-break:break-word}.toast-close{flex:0 0 auto;width:24px;height:24px;padding:0;border:none;background:none;color:var(--toast-text-dim);font-size:20px;line-height:1;cursor:pointer;transition:color .12s}.toast-close:hover{color:var(--toast-text)}@keyframes toast-in{0%{opacity:0;transform:translate(28px)}to{opacity:1;transform:none}}@keyframes toast-out{0%{opacity:1;transform:none}to{opacity:0;transform:translate(28px)}}@media(prefers-reduced-motion:reduce){.toast,.toast--leaving{animation-duration:1ms}}:root{--bg: #0f1420;--panel: #182031;--panel-2: #1f2940;--line: #2a3550;--text: #e6ebf5;--muted: #8b97b0;--accent: #4f8cff;--danger: #e0555a;--warn: #e0a030;--ok: #3fbf7f;--radius: 10px}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);font-size:14px}h1{font-size:22px;margin:0 0 16px}h2{font-size:16px;margin:0 0 12px}h3{font-size:14px;margin:16px 0 8px;color:var(--muted)}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.muted{color:var(--muted)}.error{background:#e0555a1f;color:var(--danger);padding:10px 12px;border-radius:8px;margin:10px 0}.warn-text{color:var(--danger);font-weight:600}.ok{background:#3fbf7f1f;color:var(--ok);padding:10px 12px;border-radius:8px;margin:10px 0}.topbar{display:flex;align-items:center;gap:24px;padding:12px 24px;background:var(--panel);border-bottom:1px solid var(--line)}.brand{font-weight:700}.topnav{display:flex;gap:16px}.topbar-right{margin-left:auto;display:flex;align-items:center;gap:12px}.wrap{max-width:1000px;margin:0 auto;padding:24px}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin:16px 0}input,select{background:var(--panel-2);border:1px solid var(--line);color:var(--text);padding:8px 10px;border-radius:8px;font-size:14px;width:100%}input[type=checkbox]{width:auto}label{display:block;margin:10px 0 4px;color:var(--muted)}label.chk{display:flex;align-items:center;gap:8px}.btn{background:var(--panel-2);border:1px solid var(--line);color:var(--text);padding:8px 14px;border-radius:8px;cursor:pointer;font-size:14px}.btn:hover{border-color:var(--accent)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;margin-top:14px}.btn.danger{background:var(--danger);border-color:var(--danger);color:#fff}.btn.ghost{background:transparent}.btn-sm{padding:5px 10px;font-size:13px}.btn-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:12px 0}.composer-box{margin-top:12px}.inline-form{display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap}.tbl{width:100%;border-collapse:collapse}.tbl th,.tbl td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line)}.tbl th{color:var(--muted);font-weight:600}.tbl td.sub-on{color:var(--ok);font-weight:700}.tbl td.sub-off{color:var(--muted)}.search{max-width:360px;margin-bottom:0}.search-row{display:flex;align-items:center;gap:12px;margin-bottom:16px}.search-pending{font-size:12px}.pager{display:flex;align-items:center;gap:16px;margin-top:16px}.stat-row{display:flex;flex-wrap:wrap;gap:12px}.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;min-width:120px}.stat-value{font-size:24px;font-weight:700}.stat-label{color:var(--muted);font-size:12px;margin-top:4px;text-transform:capitalize}.bars{display:flex;align-items:flex-end;gap:4px;height:140px}.bar-col{display:flex;flex-direction:column;align-items:center;justify-content:flex-end;flex:1;height:100%}.bar{width:100%;background:var(--accent);border-radius:3px 3px 0 0;min-height:2px}.bar-label{font-size:9px;color:var(--muted);margin-top:4px;transform:rotate(-45deg);white-space:nowrap}.lvl-row{display:flex;align-items:center;gap:12px;margin:6px 0}.lvl-row span{min-width:120px}.lvl-row input{width:100px}.pre{background:var(--bg);padding:12px;border-radius:8px;overflow-x:auto;font-size:12px}.discount{margin-top:12px}textarea.ta{background:var(--panel-2);border:1px solid var(--line);color:var(--text);padding:8px 10px;border-radius:8px;font-size:14px;width:100%;resize:vertical;line-height:1.45;font-family:inherit}.mono,textarea.ta.mono,input.mono{font-family:ui-monospace,SFMono-Regular,SF Mono,Menlo,Consolas,monospace;font-size:13px}.filter-bar{position:sticky;top:0;z-index:5;display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:12px 0;margin-bottom:8px;background:var(--bg)}.filter-bar select{width:auto;min-width:160px}.filter-bar .search{flex:1;min-width:200px}.tbl-wrap{overflow-x:auto}.badge{display:inline-block;white-space:nowrap;background:var(--panel-2);border:1px solid var(--line);border-radius:999px;padding:3px 10px;font-size:12px;color:var(--muted)}.chip{display:inline-block;border-radius:6px;padding:2px 8px;font-size:12px;border:1px solid var(--line);background:var(--panel-2)}.chip-code{border-color:var(--accent);color:var(--accent)}.chip-sql{border-color:var(--ok);color:var(--ok)}.chip-mcq{border-color:#b58cff;color:#b58cff}.ticket-badge{display:inline-block;border-radius:6px;padding:2px 8px;font-size:11px;font-weight:600;letter-spacing:.02em;border:1px solid transparent}.ticket-badge-help{background:#4a3f0a;color:#ffd84a;border-color:#ffd84a}.ticket-badge-bug{background:#4a1414;color:#ff6b6b;border-color:#ff6b6b}.task-head{display:flex;align-items:flex-start;gap:16px}.task-head>:last-child{margin-left:auto}.task-title{margin:8px 0 2px}.ticket-msg-body{margin-top:2px}.ticket-img{display:block;max-width:320px;max-height:320px;border-radius:8px;margin-top:4px;cursor:pointer}.meta-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;margin-bottom:12px}.meta{display:flex;flex-direction:column;gap:2px}.meta-label{color:var(--muted);font-size:12px}.pair-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.bilingual+.bilingual{margin-top:8px}.opt-head{margin-top:8px}.opt-row{display:grid;grid-template-columns:24px 1fr 1fr 36px;align-items:center;gap:10px;margin:6px 0}.opt-row input[type=radio]{width:auto}.lesson-row{display:grid;grid-template-columns:1fr 36px;align-items:center;gap:10px;margin:6px 0}.lesson-row .btn.ghost{width:36px;padding:8px 0;text-align:center}.tabs{display:flex;gap:6px;margin-bottom:8px}.tab{background:var(--panel-2);border:1px solid var(--line);color:var(--muted);padding:6px 14px;border-radius:8px;cursor:pointer;font-size:13px}.tab.on{color:var(--text);border-color:var(--accent)}.tests-tbl td{vertical-align:top}.tests-tbl td input[type=number]{width:60px}.save-bar{position:sticky;bottom:0;z-index:5;display:flex;align-items:center;gap:12px;padding:12px 0;margin-top:16px;background:var(--bg);border-top:1px solid var(--line)}.save-bar .save-btn{margin-top:0}.save-bar>:nth-child(2){margin-left:auto}.dirty{color:var(--accent);font-weight:600}.field-err{color:var(--danger);font-size:12px;margin:4px 0 0}.warn{background:#e0aa551f;color:#e0aa55;padding:10px 12px;border-radius:8px;margin:10px 0}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-card{width:340px}.login-card h1{text-align:center}