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var(--tertiary-light,#8b5cf6));color:var(--surface-container-lowest);border-radius:var(--radius-full);cursor:pointer;font-size:13px;font-weight:600;font-family:var(--font-body);box-shadow:var(--shadow-ai);transition:all .2s var(--ease);border:none;align-items:center;gap:6px;padding:8px 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h3{color:var(--on-surface);flex:1;margin:0;font-size:20px;font-weight:800;line-height:1.3}.course-info-modal-close{background:var(--surface-variant);width:32px;height:32px;color:var(--on-surface-variant);cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;transition:background .15s,color .15s;display:flex}.course-info-modal-close:hover{background:var(--error);color:#fff}.course-info-modal-body{flex:1;padding:20px 28px 28px;overflow-y:auto}.course-info-modal-body .info-stats{grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:20px;display:grid}.course-info-modal-body .info-stat-card{background:var(--surface-variant);text-align:center;border-radius:12px;padding:14px 12px}.course-info-modal-body .info-stat-value{color:var(--primary);font-size:22px;font-weight:800;line-height:1}.course-info-modal-body .info-stat-label{color:var(--on-surface-variant);letter-spacing:.3px;margin-top:4px;font-size:11px;font-weight:600}.course-info-modal-body .info-section{margin-bottom:16px}.course-info-modal-body .info-section-label{text-transform:uppercase;letter-spacing:.5px;color:var(--on-surface-variant);margin-bottom:6px;font-size:11px;font-weight:700}.course-info-modal-body .info-section-value{color:var(--on-surface);word-break:break-word;font-size:14px;line-height:1.6}.course-info-modal-body .info-section-value.mono{letter-spacing:1px;color:var(--primary);background:var(--surface-variant);border-radius:6px;padding:4px 12px;font-family:SF Mono,Cascadia Code,Consolas,monospace;font-size:15px;font-weight:700;display:inline-block}.course-info-modal-body .info-divider{background:var(--outline-variant);height:1px;margin:16px 0}.course-info-modal-body .info-objectives-list{color:var(--on-surface);margin:0;padding-left:0;font-size:14px;list-style:none}.course-info-modal-body .info-objectives-list li{padding:8px 0 8px 20px;line-height:1.5;position:relative}.course-info-modal-body .info-objectives-list li:before{content:"";background:var(--primary);opacity:.6;border-radius:50%;width:8px;height:8px;position:absolute;top:14px;left:0}.course-info-modal-body .info-objectives-list li+li{border-top:1px solid var(--outline-variant)}.course-detail-info-btn{background:var(--surface-variant);border:1px solid var(--outline-variant);width:32px;height:32px;color:var(--on-surface-variant);cursor:pointer;letter-spacing:1px;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:16px;font-weight:700;line-height:1;transition:background .15s,color .15s;display:flex}.course-detail-info-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary)}.banner-edit-btn{background:var(--surface);border:1px solid var(--outline-variant);width:28px;height:28px;color:var(--on-surface-variant);cursor:pointer;opacity:0;transition:opacity .15s var(--ease), background 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h3{margin-bottom:6px;font-size:17px;font-weight:700}.course-card-link>p{color:var(--on-surface-variant);margin-bottom:14px;font-size:14px}.banner-picker-backdrop{z-index:9000;background:#00000059;position:fixed;inset:0}.banner-picker-dropdown{background:var(--surface);border:1px solid var(--outline-variant);border-radius:var(--radius-md);z-index:9001;width:min(340px,90vw);max-height:80vh;box-shadow:var(--shadow-lg);min-width:260px;padding:16px;position:fixed;top:50%;left:50%;overflow-y:auto;transform:translate(-50%,-50%)}.banner-picker-title{color:var(--on-surface-variant);margin-bottom:8px;font-size:13px;font-weight:600}.create-form{background:var(--surface-container-lowest);flex-direction:column;gap:14px;margin-bottom:28px;display:flex;position:relative;overflow:hidden}.create-form:before{content:"";background:linear-gradient(180deg, var(--primary), var(--primary-container));border-radius:4px 0 0 4px;width:4px;position:absolute;top:0;bottom:0;left:0}.create-form h2,.create-form h3{font-size:17px;font-weight:700}.form-actions{gap:10px;margin-top:4px;display:flex}.form-row{gap:12px;display:flex}.badge{border-radius:var(--radius-full);background:var(--surface-container);color:var(--on-surface-variant);border:var(--border-inner) solid var(--border-inner-color);align-items:center;padding:5px 14px;font-size:12px;font-weight:600;display:inline-flex}.badge-invite{background:var(--primary-light);color:var(--primary);font-family:var(--font-code);letter-spacing:.06em;font-size:12px}.badge-policy{background:var(--tertiary-light);color:var(--tertiary)}.badge-high{background:var(--error-light);color:var(--error)}.badge-medium{background:var(--warning-light);color:var(--warning)}.badge-low{background:var(--success-light);color:var(--success)}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:32px;display:grid}.stat-card{background:var(--surface-container-lowest);border-radius:var(--radius-xl);text-align:center;padding:32px}.stat-label{color:var(--secondary);text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px;font-size:12px;font-weight:600}.stat-value{font-family:var(--font-display);color:var(--primary);letter-spacing:-.03em;font-size:2.25rem;font-weight:800}.stat-warning .stat-value{color:var(--error)}.table{border-collapse:separate;border-spacing:0 4px;width:100%}.table th{color:var(--secondary);text-transform:uppercase;letter-spacing:.08em;text-align:left;background:var(--surface-container-low);padding:12px 16px;font-size:11px;font-weight:700}.table th:first-child{border-radius:var(--radius-sm) 0 0 var(--radius-sm)}.table th:last-child{border-radius:0 var(--radius-sm) var(--radius-sm) 0}.table td{text-align:left;padding:14px 16px;font-size:14px}.table tbody tr{transition:background .15s var(--ease);border-radius:var(--radius-sm)}.table tbody tr:hover{background:var(--surface-container-low)}.course-detail-banner{aspect-ratio:3;border-radius:var(--radius-xl);background-position:50%;background-size:100% 100%;margin-bottom:20px}.course-info{position:relative;overflow:hidden}.course-info:before{content:"";background:linear-gradient(90deg, var(--primary), var(--tertiary));border-radius:var(--radius-xl) var(--radius-xl) 0 0;height:4px;position:absolute;top:0;left:0;right:0}.course-info h2{margin-bottom:8px;font-size:1.5rem;font-weight:800}.course-info>p{color:var(--on-surface-variant)}.course-objectives{margin-top:20px}.course-objectives strong{color:var(--secondary);text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px;font-size:11px;display:block}.course-objectives ul{flex-wrap:wrap;gap:8px;list-style:none;display:flex}.course-objectives li{background:var(--surface-container-low);border-radius:var(--radius-full);color:var(--on-surface-variant);padding:7px 18px;font-size:13px}.landing{background:var(--surface-container-lowest);min-height:100vh}.landing-header{justify-content:space-between;align-items:center;padding:24px 48px;display:flex}.landing-hero{text-align:center;background:linear-gradient(180deg, var(--surface-container-lowest) 0%, var(--surface) 100%);flex-direction:column;align-items:center;padding:100px 24px 120px;display:flex}.landing-hero h1{font-family:var(--font-display);letter-spacing:-.03em;color:var(--on-surface);margin-bottom:24px;font-size:3.25rem;font-weight:800;line-height:1.12}.landing-hero h1 span{background:linear-gradient(135deg, var(--primary), var(--tertiary));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.landing-sub{color:var(--on-surface-variant);max-width:500px;margin-bottom:44px;font-size:18px;line-height:1.7}.admin-login-toggle{margin-top:20px}.admin-login-form{flex-direction:column;gap:10px;width:100%;max-width:340px;margin-top:16px;display:flex}.admin-login-error{color:var(--error);text-align:center;margin:0;font-size:13px}.landing-features{grid-template-columns:repeat(3,1fr);gap:24px;width:100%;max-width:920px;margin-top:80px;display:grid}.feature-card{border-radius:var(--radius-xl);background:var(--surface-container-lowest);text-align:left;box-shadow:var(--shadow-sm);transition:all .3s var(--ease);padding:36px 28px}.feature-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}.feature-icon{border-radius:var(--radius-md);justify-content:center;align-items:center;width:52px;height:52px;margin-bottom:22px;font-size:24px;display:flex}.feature-icon-blue{background:var(--primary-light)}.feature-icon-purple{background:var(--tertiary-light)}.feature-icon-green{background:var(--success-light)}.feature-card h3{margin-bottom:10px;font-size:17px;font-weight:700}.feature-card p{color:var(--on-surface-variant);font-size:14px;line-height:1.7}.page-center{background:var(--surface);flex-direction:column;justify-content:center;align-items:center;gap:16px;min-height:100vh;padding:40px 24px;display:flex}.page-center h1{font-family:var(--font-display);font-size:2rem;font-weight:800}.page-center>p{color:var(--on-surface-variant);font-size:16px}.role-cards{gap:28px;margin-top:40px;display:flex}.role-card{background:var(--surface-container-lowest);border-radius:var(--radius-xl);cursor:pointer;text-align:center;width:260px;font-family:var(--font-body);transition:all .3s var(--ease);box-shadow:var(--shadow-sm);border:none;padding:44px 28px}.role-card:hover{box-shadow:var(--shadow-lg);background:var(--primary-light);transform:translateY(-4px)}.role-icon{margin-bottom:18px;font-size:48px;line-height:1}.role-card h2{font-family:var(--font-display);margin-bottom:10px;font-size:20px;font-weight:700}.role-card p{color:var(--on-surface-variant);font-size:13px;line-height:1.6}.editor-page{background:var(--surface-container-lowest);flex-direction:column;height:100vh;display:flex}.editor-topbar{background:var(--surface-container-high);height:54px;color:var(--on-surface);border-bottom:1px solid var(--outline-variant);flex-shrink:0;justify-content:space-between;align-items:center;padding:0 20px;display:flex}.editor-topbar .topbar-left{align-items:center;gap:12px;display:flex}.editor-topbar .btn-ghost{color:var(--on-surface-variant)}.editor-topbar .btn-ghost:hover{color:var(--on-surface);background:var(--surface-container)}.editor-topbar-title{font-family:var(--font-display);font-size:15px;font-weight:600}.editor-topbar .topbar-right{align-items:center;gap:6px;display:flex}.editor-topbar .topbar-saved{color:var(--on-surface-variant);padding:0 4px;font-size:12px}.editor-topbar .topbar-action{border:1px solid var(--outline-variant);background:var(--surface-container-low);color:var(--on-surface);cursor:pointer;white-space:nowrap;font-size:12px;font-weight:600;font-family:var(--font-body);border-radius:6px;align-items:center;gap:5px;padding:5px 12px;transition:all .12s;display:flex}.editor-topbar .topbar-action:hover{background:var(--surface-container);color:var(--on-surface)}.editor-topbar .topbar-action.primary{background:var(--primary);border-color:var(--primary);color:var(--surface-container-lowest)}.editor-topbar .topbar-action.primary:hover{background:var(--primary-hover)}.editor-topbar .topbar-action.ai{background:var(--tertiary-light,#632ecd26);border-color:var(--tertiary-container,#632ecd33);color:var(--tertiary)}.editor-topbar .topbar-action.ai:hover{background:var(--tertiary-container,#632ecd40)}.editor-topbar .topbar-action:disabled{opacity:.4;cursor:not-allowed}.editor-topbar .topbar-icon-btn{width:30px;height:30px;color:var(--on-surface-variant);cursor:pointer;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;transition:all .12s;display:flex}.editor-topbar 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var(--outline-variant);border-radius:var(--radius-md);background:var(--surface-container-lowest);overflow:hidden}.student-notes-card-header{cursor:pointer;text-align:left;background:0 0;border:none;align-items:center;gap:12px;width:100%;padding:14px 18px;transition:background .15s;display:flex}.student-notes-card-header:hover{background:var(--surface-container-low)}.student-notes-avatar{background:var(--primary-light);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;display:flex;overflow:hidden}.student-notes-avatar img{object-fit:cover;width:100%;height:100%}.student-notes-avatar span{color:var(--primary);font-size:14px;font-weight:700}.student-notes-info{flex:1}.student-notes-name{color:var(--on-surface);font-size:15px;font-weight:600}.student-notes-count{color:var(--on-surface-variant);margin-left:8px;font-size:12px}.student-notes-chevron{color:var(--on-surface-variant);font-size:12px;transition:transform 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8px;font-weight:600}.student-notes-comments{font-weight:500}.comments-panel{flex-direction:column;gap:0;height:100%;display:flex}.comments-panel-header{border-bottom:1px solid var(--outline-variant);justify-content:space-between;align-items:center;padding:12px 14px;display:flex}.comments-panel-header h4{color:var(--on-surface);margin:0;font-size:15px;font-weight:700}.comments-count{color:var(--on-surface-variant);font-size:12px}.comments-filter{border-bottom:1px solid var(--outline-variant);flex-wrap:wrap;gap:4px;padding:8px 14px;display:flex}.comments-filter-btn{border:1px solid var(--outline-variant);border-radius:var(--radius-full);color:var(--on-surface-variant);cursor:pointer;background:0 0;padding:4px 10px;font-size:11px;transition:all .15s}.comments-filter-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.comments-list{flex:1;padding:8px 0;overflow-y:auto}.comments-empty{text-align:center;color:var(--on-surface-variant);padding:32px 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span{color:var(--on-surface-variant);font-size:11px;font-weight:700}.comment-meta{flex:1;align-items:center;gap:6px;min-width:0;display:flex}.comment-author{color:var(--on-surface);white-space:nowrap;font-size:13px;font-weight:600}.comment-role-badge{border-radius:var(--radius-full);padding:1px 6px;font-size:10px;font-weight:600}.comment-role-badge.professor{background:var(--tertiary-light,#f0ebff);color:var(--tertiary,#632ecd)}.comment-role-badge.student{background:var(--primary-light);color:var(--primary)}.comment-time{color:var(--on-surface-variant);white-space:nowrap;font-size:11px}.comment-resolved-badge{border-radius:var(--radius-full);background:var(--success-light,#ecfdf5);color:var(--success);margin-left:auto;padding:1px 6px;font-size:10px;font-weight:600}.comment-content{color:var(--on-surface);white-space:pre-wrap;word-break:break-word;margin:2px 0 4px 30px;font-size:13px;line-height:1.5}.comment-actions{gap:4px;margin-left:30px;display:flex}.comment-action-btn{color:var(--on-surface-variant);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px 6px;font-size:11px;transition:all .15s}.comment-action-btn:hover{background:var(--surface-container-low);color:var(--on-surface)}.comment-action-btn.danger:hover{color:var(--error)}.comment-action-btn.resolve{color:var(--success)}.comment-action-btn.resolve-undo{color:var(--on-surface-variant)}.comment-textarea{resize:none;border:1px solid var(--outline-variant);border-radius:var(--radius-sm);width:100%;font-size:13px;font-family:var(--font-body);background:var(--surface-container-lowest);color:var(--on-surface);box-sizing:border-box;outline:none;padding:8px 10px;transition:border-color .15s}.comment-textarea:focus{border-color:var(--primary)}.comment-edit-area{flex-direction:column;gap:6px;margin:4px 0 4px 30px;display:flex}.comment-edit-input{resize:none;border:1px solid var(--primary);border-radius:var(--radius-sm);width:100%;font-size:13px;font-family:var(--font-body);background:var(--surface-container-lowest);color:var(--on-surface);box-sizing:border-box;outline:none;padding:6px 8px}.comment-edit-actions{gap:6px;display:flex}.btn-sm{border:1px solid var(--outline-variant);border-radius:var(--radius-sm);color:var(--on-surface);cursor:pointer;background:0 0;padding:4px 12px;font-size:12px;font-weight:500;transition:all .15s}.btn-sm:hover{background:var(--surface-container-low)}.btn-sm.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-sm.btn-primary:hover{opacity:.9}.btn-sm.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-sm.btn-ghost{color:var(--on-surface-variant);border-color:#0000}.review-mode-badge{border-radius:var(--radius-sm);background:var(--warning,#f59e0b);color:var(--surface-container-lowest);letter-spacing:.02em;white-space:nowrap;align-items:center;margin-left:8px;padding:3px 10px;font-size:11px;font-weight:600;display:inline-flex}.ProseMirror>*{position:relative}.block-comment-indicator{color:var(--on-surface-variant);cursor:pointer;z-index:5;pointer-events:auto;opacity:.7;background:0 0;border:none;border-radius:6px;align-items:center;gap:4px;padding:3px 8px;font-size:11px;font-weight:500;transition:all .15s;display:inline-flex;position:absolute}.block-comment-indicator:hover{background:var(--surface-container);color:var(--primary);opacity:1}.block-comment-indicator.active{background:var(--primary-light,#6366f114);color:var(--primary);opacity:1}.bci-count{font-size:11px;line-height:1}.bci-chevron{align-items:center;font-size:16px;font-weight:400;line-height:1;transition:transform .2s;display:inline-flex}.bci-chevron.open{transform:rotate(90deg)}.block-inline-comments{background:var(--surface-container-low,#f8f9fa);border:1px solid var(--outline-variant,#e0e0e0);border-radius:8px;margin:0 0 6px;padding:12px 16px}.block-inline-comments-header{color:var(--on-surface-variant);justify-content:space-between;align-items:center;margin-bottom:10px;font-size:12px;font-weight:600;display:flex}.block-inline-comments-header .bic-close-btn{color:var(--on-surface-variant);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px 6px;font-size:16px;line-height:1}.block-inline-comments-header .bic-close-btn:hover{background:var(--surface-container)}.bic-item{background:var(--surface-container-lowest,#fff);border:1px solid var(--outline-variant,#e8e8e8);border-radius:8px;margin-bottom:6px;padding:10px 12px}.bic-item:last-child{margin-bottom:0}.bic-author{color:var(--on-surface);align-items:center;gap:6px;margin-bottom:4px;font-size:12px;font-weight:600;display:flex}.bic-role{background:var(--primary-container,#6366f11a);color:var(--primary);border-radius:10px;padding:1px 6px;font-size:10px;font-weight:500}.bic-content{color:var(--on-surface);font-size:13px;line-height:1.6}.bic-time{color:var(--on-surface-variant);margin-top:4px;font-size:10px}.bic-input-row{gap:8px;margin-top:10px;display:flex}.bic-input-row input{border:1px solid var(--outline-variant);background:var(--surface-container-lowest,#fff);color:var(--on-surface);border-radius:8px;outline:none;flex:1;padding:8px 12px;font-size:13px;transition:border-color .15s}.bic-input-row input:focus{border-color:var(--primary);box-shadow:0 0 0 2px #6366f11a}.bic-input-row button{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:8px 16px;font-size:13px;font-weight:600;transition:opacity .15s}.bic-input-row button:hover{opacity:.9}.bic-input-row button:disabled{opacity:.5;cursor:not-allowed}.bic-resolve-btn{color:var(--on-surface-variant);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:2px 8px;font-size:11px;transition:background .12s}.bic-resolve-btn:hover{background:var(--surface-container)}.bic-resolved{opacity:.5}.completed-toggle{cursor:pointer;color:var(--on-surface-variant);border-radius:var(--radius-sm);background:0 0;border:none;align-items:center;gap:8px;padding:8px 4px;font-size:14px;font-weight:600;transition:color .15s;display:flex}.completed-toggle:hover{color:var(--on-surface)}.completed-toggle-arrow{font-size:10px;transition:transform .2s;display:inline-block}.completed-toggle-arrow.open{transform:rotate(90deg)}.assignment-calendar{margin-top:8px}.cal-nav{justify-content:center;align-items:center;gap:16px;margin-bottom:12px;display:flex}.cal-nav-title{color:var(--on-surface);text-align:center;min-width:120px;font-size:16px;font-weight:700}.cal-header{grid-template-columns:repeat(7,1fr);gap:1px;margin-bottom:4px;display:grid}.cal-header-cell{text-align:center;color:var(--on-surface-variant);padding:6px 0;font-size:11px;font-weight:600}.cal-grid{grid-template-columns:repeat(7,1fr);gap:4px;display:grid}.cal-cell{background:var(--surface-container-lowest);border:1px solid var(--outline-variant);border-radius:8px;min-height:80px;padding:4px 6px;overflow:hidden}.cal-cell.cal-empty{background:0 0;border:none}.cal-cell.cal-today{border-color:var(--primary);background:var(--primary-light,#6366f10a)}.cal-cell.cal-has-items{background:var(--surface-container-low)}.cal-date{color:var(--on-surface-variant);margin-bottom:4px;font-size:12px;font-weight:600}.cal-today .cal-date{color:var(--primary);font-weight:700}.cal-items{flex-direction:column;gap:3px;display:flex}.cal-item{background:var(--primary-light,#6366f114);cursor:pointer;border-radius:4px;align-items:center;gap:4px;padding:2px 6px;transition:background 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