:root{--color-primary: #1f5aa8;--color-primary-dark: #164378;--color-bg: #f5f7fa;--color-surface: #ffffff;--color-text: #1c2733;--color-text-muted: #5b6b7b;--color-border: #e2e8f0;--color-success: #1a9e5c;--color-danger: #c0293c;--radius: 10px;--shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 1px 2px rgba(16, 24, 40, .04)}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--color-bg);color:var(--color-text)}#root{min-height:100vh;display:flex;flex-direction:column}a{color:var(--color-primary)}.site-header{background:var(--color-surface);border-bottom:1px solid var(--color-border);padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;flex-direction:column;line-height:1.2}.brand-title{font-size:1.1rem;font-weight:700;color:var(--color-primary-dark)}.brand-subtitle{font-size:.78rem;color:var(--color-text-muted)}.header-actions{display:flex;align-items:center;gap:12px}.user-chip{font-size:.9rem;color:var(--color-text-muted)}.user-chip strong{color:var(--color-text)}.btn{display:inline-flex;align-items:center;justify-content:center;border:none;border-radius:var(--radius);padding:9px 18px;font-size:.92rem;font-weight:600;cursor:pointer;transition:background .15s ease,transform .05s ease;min-height:40px}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark)}.btn-outline{background:transparent;color:var(--color-primary);border:1px solid var(--color-primary)}.btn-outline:hover{background:#1f5aa814}.btn-block{width:100%}.btn-sm{padding:5px 12px;font-size:.82rem;min-height:34px}.btn-danger{background:var(--color-danger);color:#fff}.btn-danger:hover{background:#a02233}main{flex:1}.container{max-width:1080px;margin:0 auto;padding:0 24px}.hero{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-primary-dark) 100%);color:#fff;padding:56px 24px;text-align:center}.hero h1{margin:0 0 12px;font-size:2rem}.hero p{margin:0 auto;max-width:640px;color:#ffffffe6;line-height:1.6}.section{padding:40px 24px}.section-heading{text-align:center;margin-bottom:28px}.section-heading h2{margin:0 0 6px;font-size:1.5rem}.section-heading p{margin:0;color:var(--color-text-muted)}.type-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}.type-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;display:flex;flex-direction:column;gap:10px}.type-card h3{margin:0;font-size:1.05rem;color:var(--color-primary-dark)}.type-card p{margin:0;font-size:.88rem;color:var(--color-text-muted)}.type-card .count{font-size:1.6rem;font-weight:700}.type-card-highlight{border-color:var(--color-primary);box-shadow:0 0 0 2px var(--color-primary)}.empty-state{border:1px dashed var(--color-border);border-radius:var(--radius);padding:16px;text-align:center;color:var(--color-text-muted);font-size:.85rem}.archive-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}.archive-item{border-top:1px solid var(--color-border);padding-top:10px;display:flex;flex-direction:column;gap:4px}.archive-item:first-child{border-top:none;padding-top:0}.archive-item-title{font-weight:600}.archive-item-detail{display:flex;flex-direction:column;gap:2px;padding:8px 10px;border-radius:8px;background:var(--color-bg)}.page-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:20px}.page-header h2{margin:0 0 4px;font-size:1.3rem}.hint{margin:0;font-size:.85rem;color:var(--color-text-muted)}.hint-warning{color:#b7791f}.lecturer-contact-link{background:none;border:none;padding:0;font:inherit;color:var(--color-primary);text-decoration:underline;cursor:pointer}.lecturer-contact-link:hover{color:var(--color-primary-dark)}.form-success{margin:0;color:var(--color-success);font-size:.85rem}.filters-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px;font-size:.85rem;color:var(--color-text-muted)}.filters-row select,.filters-row input[type=search]{padding:8px 10px;border:1px solid var(--color-border);border-radius:8px;font-size:.88rem;color:var(--color-text)}.field input[type=file]{padding:8px;border:1px dashed var(--color-border);border-radius:8px;background:var(--color-surface);font-size:.85rem}.table-scroll{overflow-x:auto;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface);box-shadow:var(--shadow)}.data-table{width:100%;border-collapse:collapse;font-size:.88rem}.data-table th,.data-table td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--color-border);white-space:nowrap}.data-table th{background:#f8fafc;color:var(--color-text-muted);font-weight:600;font-size:.75rem;text-transform:uppercase;letter-spacing:.03em}.data-table tr:last-child td{border-bottom:none}.data-table select{padding:6px 8px;border:1px solid var(--color-border);border-radius:6px;font-size:.85rem;font-family:inherit;white-space:normal}.data-table td.cell-block{white-space:normal}.rubric-total-pill{margin-bottom:8px}.rubric-table th,.rubric-table td{white-space:normal;vertical-align:top}.rubric-table th{min-width:168px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.report-list{display:flex;flex-direction:column;gap:14px}.report-summary{cursor:pointer}.report-card-header{display:inline-flex;flex-wrap:wrap;align-items:center;gap:10px}.report-card-body,.report-card-section{margin-top:10px}.report-card-label{display:block;font-weight:600;font-size:.75rem;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.03em;margin-bottom:4px}.ai-usage-list{display:flex;flex-direction:column;gap:8px}.ai-usage-entry{border:1px solid var(--color-border);border-radius:var(--radius);padding:10px 12px;background:#f8fafc}.ai-usage-entry-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px;margin-bottom:6px}.ai-usage-field{margin-top:6px}.ai-usage-field-label{display:block;font-weight:600;font-size:.72rem;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.03em;margin-bottom:2px}.rubric-table th.rubric-name-col,.rubric-table td.rubric-name-cell{position:sticky;left:0;background:var(--color-surface);z-index:1;box-shadow:1px 0 0 var(--color-border);min-width:140px}.rubric-max{display:block;font-weight:400;text-transform:none;letter-spacing:normal;color:var(--color-text-muted);font-size:.7rem;margin-top:2px}.rubric-student-name{font-weight:600}.rubric-progress{margin-top:2px}.rubric-cell{display:flex;flex-direction:column;gap:4px;border-left:3px solid var(--color-border);padding-left:8px}.rubric-score-input-row{display:flex;align-items:center;gap:6px}.rubric-score-input-row input{width:100%;min-width:0;padding:6px 8px;border:1px solid var(--color-border);border-radius:6px;font-size:.85rem;font-family:inherit}.rubric-score-input-row input:disabled{background:#f8fafc;color:var(--color-text-muted)}.rubric-score-max{flex:0 0 auto;font-size:.78rem;color:var(--color-text-muted);white-space:nowrap}.rubric-level-1{border-left-color:var(--color-danger)}.rubric-level-2{border-left-color:#d9743a}.rubric-level-3{border-left-color:#b7791f}.rubric-level-4{border-left-color:#2f855a}.rubric-level-5{border-left-color:var(--color-success)}.rubric-saving{font-size:.78rem;color:var(--color-text-muted);font-style:italic}.rubric-cell-error{margin-top:4px}.markdown-content>*:first-child{margin-top:0}.markdown-content>*:last-child{margin-bottom:0}.markdown-content p,.markdown-content ul,.markdown-content ol{margin:.4em 0}.markdown-content ul,.markdown-content ol{padding-left:1.4em}.markdown-content code{background:#f1f5f9;padding:.1em .35em;border-radius:4px;font-size:.9em}.markdown-content pre{background:#f1f5f9;padding:.6em .8em;border-radius:6px;overflow-x:auto}.markdown-content pre code{background:none;padding:0}.markdown-content blockquote{margin:.4em 0;padding-left:.8em;border-left:3px solid var(--color-border);color:var(--color-text-muted)}.markdown-content table{border-collapse:collapse;margin:.4em 0}.markdown-content th,.markdown-content td{border:1px solid var(--color-border);padding:4px 8px}.status-pill{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;font-size:.75rem;font-weight:600;white-space:nowrap}.status-pill-success{background:#1a9e5c1f;color:var(--color-success)}.status-pill-danger{background:#c0293c1f;color:var(--color-danger)}.status-pill-warning{background:#b7791f1f;color:#b7791f}.status-pill-info{background:#1f5aa81f;color:var(--color-primary-dark)}.status-pill-neutral{background:#eef2f7;color:var(--color-text-muted)}.member-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.member-list li{background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;padding:8px 12px;font-size:.9rem;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.topic-list{display:flex;flex-direction:column;gap:16px}.subsection{border-top:1px solid var(--color-border);margin-top:14px;padding-top:14px}.mt-sm{margin-top:8px}.mt-md{margin-top:16px}.mt-lg{margin-top:28px}.mb-lg{margin-bottom:20px}.student-picker{border:1px solid var(--color-border);border-radius:8px;padding:12px;background:var(--color-surface)}.student-picker-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:10px}.student-picker-toolbar input[type=search]{flex:1;min-width:200px;padding:8px 10px;border:1px solid var(--color-border);border-radius:8px;font-size:.88rem}.student-picker-actions{display:flex;gap:8px;margin-bottom:10px}.student-picker-list{list-style:none;margin:0;padding:0;max-height:280px;overflow-y:auto;border:1px solid var(--color-border);border-radius:8px}.student-picker-list li{border-bottom:1px solid var(--color-border)}.student-picker-list li:last-child{border-bottom:none}.student-picker-list label{display:flex;align-items:baseline;gap:8px;padding:8px 10px;cursor:pointer;font-size:.88rem}.student-picker-name{font-weight:600}.student-picker-meta{color:var(--color-text-muted);font-size:.82rem}.lecturer-picker{display:inline-flex;flex-direction:column;gap:8px;min-width:260px}.lecturer-picker-summary{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.lecturer-picker-selected{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;font-size:.88rem}.lecturer-picker-meta{color:var(--color-text-muted);font-size:.82rem}.lecturer-picker-stat,.lecturer-picker-stats{color:var(--color-text-muted);font-size:.78rem;background:var(--color-bg, #f1f3f5);border-radius:999px;padding:2px 8px}.lecturer-picker-panel{border:1px solid var(--color-border);border-radius:8px;padding:10px;background:var(--color-surface)}.lecturer-picker-panel input[type=search]{width:100%;padding:8px 10px;border:1px solid var(--color-border);border-radius:8px;font-size:.88rem;margin-bottom:8px}.lecturer-picker-list{list-style:none;margin:0;padding:0;max-height:260px;overflow-y:auto;border:1px solid var(--color-border);border-radius:8px}.lecturer-picker-list li{border-bottom:1px solid var(--color-border)}.lecturer-picker-list li:last-child{border-bottom:none}.lecturer-picker-list button{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;width:100%;padding:8px 10px;border:none;background:none;cursor:pointer;text-align:left;font-size:.88rem}.lecturer-picker-list button:hover,.lecturer-picker-list button.active{background:var(--color-bg, #f1f3f5)}.lecturer-picker-name{font-weight:600}.lecturer-picker-stats{margin-left:auto}.pagination{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:12px}.pagination-controls{display:flex;align-items:center;gap:10px}.pagination-controls label{display:flex;align-items:center;gap:6px;font-size:.85rem;color:var(--color-text-muted)}.tabs{display:flex;gap:4px;flex-wrap:wrap;border-bottom:1px solid var(--color-border);margin-bottom:20px}.tab-btn{padding:10px 16px;border:none;background:none;font-family:inherit;font-size:.92rem;font-weight:600;color:var(--color-text-muted);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}.tab-btn:hover{color:var(--color-primary-dark)}.tab-btn-active{color:var(--color-primary-dark);border-bottom-color:var(--color-primary)}.round-multiselect{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}.round-multiselect-label{color:var(--color-text-muted)}.round-multiselect-chips{display:flex;gap:6px;flex-wrap:wrap}.chip-toggle{padding:5px 12px;border:1px solid var(--color-border);border-radius:999px;background:var(--color-surface);color:var(--color-text-muted);font-family:inherit;font-size:.82rem;cursor:pointer}.chip-toggle:hover{border-color:var(--color-primary)}.chip-toggle-active{background:#1f5aa81f;border-color:var(--color-primary);color:var(--color-primary-dark);font-weight:600}.menu-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}.menu-card{position:relative;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 72px 16px 16px;text-align:left;display:flex;align-items:flex-start;gap:12px;font-family:inherit;cursor:not-allowed;transition:box-shadow .15s ease,transform .1s ease}.menu-card:not(:disabled){cursor:pointer;padding-right:16px}.menu-card:not(:disabled):hover{box-shadow:0 4px 12px #1018281f;transform:translateY(-1px)}.menu-card-icon{flex:none;width:38px;height:38px;border-radius:9px;background:#1f5aa81a;color:var(--color-primary-dark);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1rem}.menu-card-body{display:flex;flex-direction:column;gap:4px;min-width:0}.menu-card-title{font-weight:700;color:var(--color-primary-dark)}.menu-card-desc{font-size:.85rem;color:var(--color-text-muted);line-height:1.4}.badge-soon{position:absolute;top:12px;right:12px;background:#eef2f7;color:var(--color-text-muted);font-size:.68rem;font-weight:600;padding:2px 8px;border-radius:999px;white-space:nowrap}.auth-shell{min-height:calc(100vh - 65px);display:flex;align-items:center;justify-content:center;padding:24px}.form-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow);padding:32px;width:100%;max-width:380px;display:flex;flex-direction:column;gap:14px}.form-card h2{margin:0;font-size:1.3rem}.form-card .hint{margin:-6px 0 0;font-size:.82rem;color:var(--color-text-muted)}.field{display:flex;flex-direction:column;gap:8px}.field label{font-size:.82rem;line-height:1.4;color:var(--color-text-muted)}.field input,.field select,.field textarea{padding:10px 12px;border:1px solid var(--color-border);border-radius:8px;font-size:.95rem;font-family:inherit}.field textarea{resize:vertical;min-height:70px}.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #1f5aa826}.form-card-wide{max-width:720px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-row{display:flex;align-items:flex-end;gap:10px;flex-wrap:wrap}.form-row .field{flex:1;min-width:160px}.form-error{margin:0;color:var(--color-danger);font-size:.85rem}.back-link{font-size:.85rem;text-decoration:none}.site-footer{border-top:1px solid var(--color-border);padding:16px 24px;display:flex;align-items:center;justify-content:space-between;font-size:.78rem;color:var(--color-text-muted)}.status-dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:6px}.status-dot.ok{background:var(--color-success)}.status-dot.fail{background:var(--color-danger)}.status-dot.pending{background:#cbd5e1}.page-loading{min-height:100vh;display:flex;align-items:center;justify-content:center;color:var(--color-text-muted)}@media (max-width: 640px){.site-header{flex-direction:column;align-items:flex-start;gap:10px;padding:12px 16px}.header-actions{width:100%;justify-content:space-between;flex-wrap:wrap;gap:8px}.user-chip{font-size:.82rem}.container,.hero,.section,.site-footer{padding-left:16px;padding-right:16px}.hero{padding-top:32px;padding-bottom:32px}.hero h1{font-size:1.4rem}.hero p{font-size:.92rem}.section{padding-top:24px;padding-bottom:24px}.section-heading h2{font-size:1.2rem}.menu-grid,.type-grid,.form-grid{grid-template-columns:1fr}.data-table{font-size:.82rem}.data-table th,.data-table td{padding:6px 8px}.data-table select{width:100%}.rubric-table thead{display:none}.rubric-table,.rubric-table tbody,.rubric-table tr,.rubric-table td{display:block;width:100%}.rubric-table tr{margin-bottom:12px;border:1px solid var(--color-border);border-radius:var(--radius);overflow:hidden}.rubric-table tr:last-child{margin-bottom:0}.rubric-table td{border-bottom:1px solid var(--color-border);padding:10px 12px}.rubric-table td:last-child{border-bottom:none}.rubric-table td.rubric-name-cell{position:static;box-shadow:none;background:#f8fafc}.rubric-table td:not(.rubric-name-cell):before{content:attr(data-label);display:block;font-weight:600;font-size:.75rem;color:var(--color-text-muted);margin-bottom:4px}.report-card-header{gap:6px}.form-card-wide{max-width:100%}.site-footer{flex-direction:column;align-items:flex-start;gap:6px}.form-card{padding:22px}.auth-shell{padding:16px}}.report-session-calendar{margin-bottom:20px;max-width:100%;overflow-x:auto}.report-session-calendar .rbc-event-open{background-color:var(--color-success)}.report-session-calendar .rbc-event-full{background-color:#94a3b8}.report-session-calendar .rbc-event-mine{background-color:var(--color-primary);border:2px solid var(--color-primary-dark)}.report-session-calendar .rbc-event-noshow{background-color:var(--color-danger)}.report-session-calendar .rbc-day-slot .rbc-event{min-height:28px}.report-session-calendar .rbc-day-slot .rbc-event-label,.report-session-calendar .rbc-day-slot .rbc-event-content{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:.7rem;line-height:1.3}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;display:flex;align-items:center;justify-content:center;padding:16px;background:#10182880}.modal-card{display:flex;flex-direction:column;width:100%;max-width:720px;max-height:85vh;background:var(--color-surface);border-radius:var(--radius);box-shadow:0 10px 30px #10182840}.modal-header{padding:16px 24px;border-bottom:1px solid var(--color-border)}.modal-header h2{margin:0;font-size:1.2rem;color:var(--color-primary-dark)}.modal-body{padding:16px 24px;overflow-y:auto}.modal-footer{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:12px 24px;border-top:1px solid var(--color-border);font-size:.88rem}@media (max-width: 640px){.modal-backdrop{padding:8px}.modal-header,.modal-body,.modal-footer{padding-left:16px;padding-right:16px}}.guide-list{display:flex;flex-direction:column;gap:10px}.guide-section{border:1px solid var(--color-border);border-radius:var(--radius);padding:10px 14px;background:var(--color-surface)}.guide-summary{cursor:pointer;font-weight:600;color:var(--color-primary-dark)}.guide-section .markdown-content{margin-top:10px;font-size:.9rem;line-height:1.55;overflow-wrap:anywhere}.guide-section .markdown-content li+li{margin-top:4px}