@import "https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap";:root{--font-sans:"Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono:"Fira Code", "JetBrains Mono", "SF Mono", Consolas, monospace;--bg-canvas:#09090b;--bg-surface:#121215;--bg-surface-elevated:#18181b;--bg-card:#18181ba6;--bg-card-subtle:#161619;--bg-code:#000;--text-primary:#fafafa;--text-secondary:#a1a1aa;--text-muted:#71717a;--text-dim:#52525b;--btn-primary-bg:#fff;--btn-primary-text:#000;--btn-primary-hover:#e4e4e7;--btn-secondary-bg:#27272a;--btn-secondary-text:#fafafa;--btn-secondary-hover:#3f3f46;--border-subtle:#27272a;--border-glass:#ffffff14;--border-focus:#ffffff40;--card-shadow:0 12px 36px -6px #0009;--alarm-red:#ef4444;--alarm-red-subtle:#ef44441f;--alarm-red-border:#ef44444d;--success-green:#22c55e;--success-green-subtle:#22c55e1f;--success-green-border:#22c55e4d;--warning-amber:#f59e0b;--warning-amber-subtle:#f59e0b1f;--accent-blue:#3b82f6;--accent-blue-subtle:#3b82f61f;--scrollbar-thumb:#fff3;--scrollbar-thumb-hover:#fff6;--scrollbar-track:#0003}*{box-sizing:border-box;scrollbar-width:thin;scrollbar-color:var(--scrollbar-thumb) var(--scrollbar-track);margin:0;padding:0}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--scrollbar-track)}::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:999px}::-webkit-scrollbar-thumb:hover{background:var(--scrollbar-thumb-hover)}body{background-color:var(--bg-canvas);color:var(--text-primary);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;background-image:radial-gradient(circle at 50% 0,#ffffff08 0%,#0000 70%);min-height:100vh}.teacher-app-container{background-color:var(--bg-canvas);flex-direction:column;min-height:100vh;display:flex}.dashboard-content{flex-direction:column;flex:1;gap:28px;width:100%;max-width:1400px;margin:0 auto;padding:32px 24px 64px;display:flex}.teacher-navbar{-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border-glass);z-index:50;background:#121215bf;justify-content:space-between;align-items:center;height:68px;padding:0 32px;display:flex;position:sticky;top:0}.nav-left{align-items:center;gap:16px;display:flex}.nav-back-btn{border:1px solid var(--border-subtle);color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:8px;align-items:center;gap:6px;padding:6px 12px;font-size:13px;font-weight:500;transition:all .15s;display:inline-flex}.nav-back-btn:hover{background:var(--bg-surface-elevated);color:var(--text-primary);border-color:#fff3}.nav-brand{align-items:center;gap:12px;display:flex}.brand-logo-frame{border:1px solid var(--border-glass);background:#ffffff0a;border-radius:10px;justify-content:center;align-items:center;width:36px;height:36px;display:flex;box-shadow:inset 0 1px #ffffff1a}.brand-logo-img{object-fit:contain;width:22px;height:22px}.brand-titles{flex-direction:column;display:flex}.brand-heading-row{align-items:center;gap:8px;display:flex}.brand-title{color:var(--text-primary);letter-spacing:-.01em;font-size:15px;font-weight:700}.brand-badge-proctor{font-family:var(--font-mono);letter-spacing:.08em;color:var(--text-secondary);background:#ffffff14;border:1px solid #ffffff1f;border-radius:4px;padding:1px 5px;font-size:9px;font-weight:700}.brand-sub{color:var(--text-muted);font-size:11px}.nav-center{align-items:center;gap:12px;display:flex}.room-indicator-pill{background:var(--bg-surface-elevated);border:1px solid var(--border-subtle);font-family:var(--font-mono);border-radius:8px;align-items:center;gap:6px;padding:5px 12px;font-size:12px;display:flex}.room-indicator-pill .indicator-label{color:var(--text-muted);font-size:10px;font-weight:600}.room-indicator-pill .indicator-code{color:var(--text-primary);font-weight:600}.nav-stat-pill{border:1px solid var(--border-glass);color:var(--text-secondary);background:#18181bcc;border-radius:8px;align-items:center;gap:8px;padding:6px 14px;font-size:12px;font-weight:500;display:flex}.nav-stat-pill.clean-status{color:var(--text-muted)}.nav-stat-pill.violation-alert{background:var(--alarm-red-subtle);border-color:var(--alarm-red-border);color:var(--alarm-red);font-weight:600;animation:2s infinite subtlePulse}.create-exam-btn{background:var(--btn-primary-bg);color:var(--btn-primary-text);cursor:pointer;border:1px solid #fff3;border-radius:9px;align-items:center;gap:8px;padding:8px 18px;font-size:13px;font-weight:600;transition:all .15s cubic-bezier(.16,1,.3,1);display:inline-flex;box-shadow:0 2px 10px #ffffff1a}.create-exam-btn:hover{background:var(--btn-primary-hover);transform:translateY(-1px)}.room-header-card{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-glass);box-shadow:var(--card-shadow);border-radius:16px;grid-template-columns:1fr auto;align-items:center;gap:32px;padding:28px 32px;display:grid;position:relative;overflow:hidden}.room-header-card:before{content:"";background:linear-gradient(90deg,#0000,#ffffff26,#0000);height:1px;position:absolute;top:0;left:0;right:0}.room-meta{flex-direction:column;gap:12px;display:flex}.meta-badge-row{align-items:center;gap:10px;display:flex}.live-status-pill{background:var(--success-green-subtle);border:1px solid var(--success-green-border);color:var(--success-green);font-family:var(--font-mono);letter-spacing:.04em;border-radius:6px;align-items:center;gap:7px;padding:4px 10px;font-size:11px;font-weight:600;display:inline-flex}.pulse-dot{border-radius:50%;width:6px;height:6px;display:inline-block}.pulse-dot.green{background-color:var(--success-green);box-shadow:0 0 8px var(--success-green);animation:2s ease-in-out infinite dotPulse}.platform-tag{font-family:var(--font-mono);color:var(--text-dim);font-size:11px}.exam-title{color:var(--text-primary);letter-spacing:-.02em;font-size:24px;font-weight:800;line-height:1.25}.exam-stat-chips{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.stat-chip{border:1px solid var(--border-subtle);color:var(--text-secondary);background:#ffffff0a;border-radius:7px;align-items:center;gap:6px;padding:5px 11px;font-size:12px;display:inline-flex}.stat-chip.accent{color:var(--text-primary);border-color:#ffffff1f;font-weight:500}.room-actions-pane{align-items:center;gap:20px;display:flex}.room-code-box{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:12px;flex-direction:column;gap:8px;min-width:250px;padding:14px 18px;display:flex}.code-header{justify-content:space-between;align-items:center;display:flex}.code-header .label{font-family:var(--font-mono);color:var(--text-muted);letter-spacing:.06em;font-size:10px;font-weight:600}.switch-toggle-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;font-size:11px;text-decoration:underline;transition:color .15s}.switch-toggle-btn:hover{color:var(--text-primary)}.code-display{justify-content:space-between;align-items:center;gap:12px;display:flex}.code-text{font-family:var(--font-mono);letter-spacing:.05em;color:#fff;font-size:20px;font-weight:700}.copy-btn{border:1px solid var(--border-subtle);color:var(--text-primary);cursor:pointer;background:#ffffff14;border-radius:6px;align-items:center;gap:5px;padding:5px 10px;font-size:11px;font-weight:600;transition:all .15s;display:inline-flex}.copy-btn:hover{background:#ffffff24}.switch-room-form{align-items:center;gap:6px;display:flex}.switch-room-input{border:1px solid var(--border-subtle);font-family:var(--font-mono);color:#fff;background:#000;border-radius:6px;outline:none;flex:1;padding:6px 10px;font-size:13px}.switch-room-input:focus{border-color:#ffffff4d}.switch-submit-btn{background:var(--btn-primary-bg);color:var(--btn-primary-text);cursor:pointer;border:none;border-radius:6px;justify-content:center;align-items:center;padding:7px 10px;display:flex}.code-hint{color:var(--text-dim);font-size:10px}.room-metrics-grid{align-items:center;gap:12px;display:flex}.metric-box{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:12px;align-items:center;gap:12px;min-width:140px;padding:12px 16px;display:flex}.metric-box.violation{border-color:var(--alarm-red-border);background:#ef44440f}.metric-icon{width:34px;height:34px;color:var(--text-secondary);background:#ffffff0d;border-radius:8px;justify-content:center;align-items:center;display:flex}.metric-box.violation .metric-icon{background:var(--alarm-red-subtle);color:var(--alarm-red)}.metric-info{flex-direction:column;display:flex}.metric-num{font-family:var(--font-mono);color:var(--text-primary);font-size:17px;font-weight:700}.metric-box.violation .metric-num{color:var(--alarm-red)}.metric-lbl{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;font-size:10px}.refresh-room-btn{background:var(--bg-surface);border:1px solid var(--border-subtle);width:52px;height:60px;color:var(--text-secondary);cursor:pointer;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;gap:4px;font-size:10px;font-weight:600;transition:all .15s;display:inline-flex}.refresh-room-btn:hover{background:var(--bg-surface-elevated);color:var(--text-primary);border-color:#fff3}.refresh-room-btn.spinning svg{animation:1s linear infinite spin}.table-container{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-glass);box-shadow:var(--card-shadow);border-radius:16px;flex-direction:column;display:flex;overflow:hidden}.table-header{border-bottom:1px solid var(--border-glass);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:20px 24px;display:flex}.header-left{align-items:center;gap:16px;display:flex}.table-title-group{align-items:center;gap:10px;display:flex}.table-title{color:var(--text-primary);font-size:16px;font-weight:700}.student-count-badge{font-family:var(--font-mono);background:var(--bg-surface-elevated);border:1px solid var(--border-subtle);color:var(--text-secondary);border-radius:5px;padding:2px 7px;font-size:11px}.live-feed-pill{font-family:var(--font-mono);color:var(--text-muted);letter-spacing:.05em;border:1px solid var(--border-subtle);background:#ffffff08;border-radius:6px;align-items:center;gap:6px;padding:3px 8px;font-size:10px;display:inline-flex}.pulse-icon{color:var(--success-green);animation:2s ease-in-out infinite dotPulse}.header-right{align-items:center;gap:12px;display:flex}.search-box{width:240px;position:relative}.search-icon{color:var(--text-muted);pointer-events:none;position:absolute;top:50%;left:10px;transform:translateY(-50%)}.search-input{background:var(--bg-surface);border:1px solid var(--border-subtle);width:100%;color:var(--text-primary);border-radius:8px;outline:none;padding:7px 12px 7px 32px;font-size:12px;transition:border-color .15s}.search-input:focus{border-color:#ffffff40}.filter-segmented{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:8px;align-items:center;padding:2px;display:flex}.filter-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:5px 11px;font-size:11px;font-weight:500;transition:all .15s}.filter-btn.active{background:var(--bg-surface-elevated);color:var(--text-primary);font-weight:600;box-shadow:0 1px 4px #0006}.table-wrapper{overflow-x:auto}.student-table{border-collapse:collapse;text-align:left;width:100%}.student-table th{font-family:var(--font-mono);color:var(--text-muted);letter-spacing:.08em;border-bottom:1px solid var(--border-glass);background:#12121580;padding:12px 20px;font-size:10px;font-weight:600}.student-table td{vertical-align:middle;border-bottom:1px solid #ffffff0a;padding:14px 20px;font-size:13px}.student-row{transition:background .15s}.student-row:hover{background:#ffffff05}.student-row.row-alert{background:#ef444408}.student-cell{align-items:center;gap:12px;display:flex}.student-avatar{color:#fafafa;background:#27272a;border:1px solid #ffffff1a;border-radius:50%;justify-content:center;align-items:center;width:32px;height:32px;font-size:12px;font-weight:700;display:flex}.student-text{flex-direction:column;display:flex}.candidate-name{color:var(--text-primary);font-size:13px;font-weight:600}.candidate-nim{font-family:var(--font-mono);color:var(--text-muted);font-size:11px}.time-cell{font-family:var(--font-mono);color:var(--text-muted);font-size:12px}.status-tag{border-radius:6px;align-items:center;gap:6px;padding:4px 10px;font-size:11px;font-weight:600;display:inline-flex}.status-tag.passed{background:var(--success-green-subtle);border:1px solid var(--success-green-border);color:var(--success-green)}.status-tag.error{background:var(--alarm-red-subtle);border:1px solid var(--alarm-red-border);color:var(--alarm-red)}.status-tag.coding{color:#fafafa;background:#ffffff0f;border:1px solid #ffffff1f}.status-tag.submitted{color:#93c5fd;background:#3b82f61a;border:1px solid #3b82f64d}.status-tag.idle{border:1px solid var(--border-subtle);color:var(--text-dim);background:#ffffff08}.score-badge{font-family:var(--font-mono);color:var(--text-primary);font-size:12px;font-weight:600}.hint-pill{font-family:var(--font-mono);background:var(--bg-surface);border:1px solid var(--border-subtle);color:var(--text-secondary);border-radius:5px;padding:3px 8px;font-size:11px}.violation-badge{font-size:11px;font-weight:600;font-family:var(--font-mono);border-radius:6px;align-items:center;gap:6px;padding:4px 10px;display:inline-flex}.violation-badge.clean{border:1px solid var(--border-subtle);color:var(--text-muted);background:#ffffff08}.violation-badge.active{background:var(--alarm-red-subtle);border:1px solid var(--alarm-red-border);color:var(--alarm-red)}.empty-table-cell{text-align:center;padding:64px 20px!important}.empty-state-box{flex-direction:column;align-items:center;gap:8px;max-width:400px;margin:0 auto;display:flex}.empty-icon{color:var(--text-dim);margin-bottom:4px}.empty-title{color:var(--text-primary);font-size:14px;font-weight:600}.empty-sub{color:var(--text-muted);font-size:12px;line-height:1.5}.studio-overlay{-webkit-backdrop-filter:blur(20px);z-index:1000;background:#000000d9;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.studio-container{background:#101013;border:1px solid #ffffff1a;border-radius:20px;flex-direction:column;width:100%;max-width:1320px;height:92vh;display:flex;overflow:hidden;box-shadow:0 24px 72px -12px #000000e6}.studio-header{border-bottom:1px solid var(--border-glass);background:#18181bd9;justify-content:space-between;align-items:center;padding:18px 28px;display:flex}.studio-brand{align-items:center;gap:14px;display:flex}.studio-badge-icon{border:1px solid var(--border-glass);background:#ffffff0a;border-radius:10px;justify-content:center;align-items:center;width:38px;height:38px;display:flex}.studio-favicon-img{object-fit:contain;width:24px;height:24px}.studio-title-row{align-items:center;gap:8px;display:flex}.studio-title{color:var(--text-primary);font-size:16px;font-weight:700}.studio-tag{font-family:var(--font-mono);letter-spacing:.08em;color:var(--text-secondary);background:#ffffff14;border:1px solid #ffffff1f;border-radius:4px;padding:1px 5px;font-size:9px;font-weight:700}.studio-sub{color:var(--text-muted);font-size:11px}.studio-top-actions{align-items:center;gap:10px;display:flex}.studio-btn{cursor:pointer;border-radius:8px;align-items:center;gap:6px;padding:7px 14px;font-size:12px;font-weight:600;transition:all .15s;display:inline-flex}.preset-btn{border:1px solid var(--border-subtle);color:var(--text-primary);background:#ffffff0f}.preset-btn:hover{background:#ffffff1f}.close-studio-btn{border:1px solid var(--border-subtle);color:var(--text-muted);background:0 0;padding:7px 10px}.close-studio-btn:hover{background:var(--bg-surface-elevated);color:var(--text-primary)}.studio-alert-banner{background:var(--alarm-red-subtle);border-bottom:1px solid var(--alarm-red-border);color:var(--alarm-red);align-items:center;gap:8px;padding:10px 24px;font-size:12px;font-weight:500;display:flex}.studio-global-meta{border-bottom:1px solid var(--border-glass);background:#141418;flex-wrap:wrap;align-items:flex-end;gap:20px;padding:14px 28px;display:flex}.meta-field{flex-direction:column;gap:6px;display:flex}.meta-field label{font-family:var(--font-mono);color:var(--text-muted);letter-spacing:.05em;font-size:10px;font-weight:600}.meta-field.title-field{flex:1;min-width:280px}.meta-field.small-field{width:140px}.studio-input{border:1px solid var(--border-subtle);color:#fafafa;background:#09090b;border-radius:8px;outline:none;width:100%;padding:8px 12px;font-size:13px}.studio-input:focus{border-color:#ffffff4d}.meta-policy-switches{align-items:center;gap:16px;padding-bottom:4px;display:flex}.policy-switch{color:var(--text-secondary);cursor:pointer;align-items:center;gap:8px;font-size:12px;display:flex}.policy-switch input{accent-color:#fff}.studio-body{flex:1;grid-template-columns:300px 1fr;display:grid;overflow:hidden}.studio-sidebar{border-right:1px solid var(--border-glass);background:#121215;flex-direction:column;display:flex;overflow:hidden}.sidebar-top{border-bottom:1px solid var(--border-glass);flex-direction:column;gap:10px;padding:16px 18px;display:flex}.sidebar-label-row{justify-content:space-between;align-items:center;display:flex}.sidebar-label{font-family:var(--font-mono);color:var(--text-muted);letter-spacing:.06em;font-size:10px;font-weight:600}.points-summary{font-family:var(--font-mono);color:var(--text-secondary);font-size:11px}.add-problem-btn{border:1px dashed var(--border-subtle);color:var(--text-primary);cursor:pointer;background:#ffffff0d;border-radius:8px;justify-content:center;align-items:center;gap:6px;padding:8px;font-size:12px;font-weight:600;transition:all .15s;display:flex}.add-problem-btn:hover{background:#ffffff1a;border-color:#ffffff4d}.problem-list-scroll{flex-direction:column;flex:1;gap:8px;padding:12px;display:flex;overflow-y:auto}.problem-item-card{border:1px solid var(--border-subtle);cursor:pointer;background:#18181b99;border-radius:10px;flex-direction:column;gap:6px;padding:12px 14px;transition:all .15s;display:flex}.problem-item-card:hover{background:#27272acc}.problem-item-card.active{background:var(--bg-surface-elevated);border-color:#ffffff4d;box-shadow:0 4px 12px #00000080}.item-top{align-items:center;gap:8px;display:flex}.item-num{font-family:var(--font-mono);color:var(--text-muted);font-size:11px;font-weight:700}.diff-pill{font-family:var(--font-mono);text-transform:uppercase;border-radius:4px;padding:2px 6px;font-size:9px;font-weight:700}.diff-pill.easy{background:var(--success-green-subtle);color:var(--success-green)}.diff-pill.medium{background:var(--warning-amber-subtle);color:var(--warning-amber)}.diff-pill.hard{background:var(--alarm-red-subtle);color:var(--alarm-red)}.item-pts{font-family:var(--font-mono);color:var(--text-secondary);margin-left:auto;font-size:11px}.item-title{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:600;overflow:hidden}.item-footer{justify-content:space-between;align-items:center;margin-top:4px;display:flex}.item-tc-count{color:var(--text-dim);font-size:11px}.item-quick-actions{align-items:center;gap:4px;display:flex}.item-action-icon{color:var(--text-dim);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:3px;display:flex}.item-action-icon:hover{color:var(--text-primary);background:#ffffff1a}.item-action-icon.delete:hover{color:var(--alarm-red);background:var(--alarm-red-subtle)}.studio-editor-pane{background:#0d0d10;flex-direction:column;display:flex;overflow:hidden}.editor-content-scroll{flex-direction:column;flex:1;gap:20px;padding:24px 32px;display:flex;overflow-y:auto}.problem-meta-card{background:var(--bg-surface);border:1px solid var(--border-glass);border-radius:12px;padding:18px 20px}.meta-grid{grid-template-columns:2fr 1fr 1.2fr .8fr;align-items:flex-end;gap:16px;display:grid}.form-cell{flex-direction:column;gap:6px;display:flex}.form-cell label{font-family:var(--font-mono);color:var(--text-muted);letter-spacing:.05em;font-size:10px;font-weight:600}.difficulty-segmented{border:1px solid 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