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rgba(148,163,184,.25);box-shadow:var(--shadow-md);display:flex;flex-direction:column;gap:6px;z-index:20}.structure-create-menu[data-align=left] .structure-create-dropdown{left:0}.structure-create-menu[data-align=right] .structure-create-dropdown{right:0}.structure-create-option{padding:8px;border-radius:6px;border:none;background:transparent;text-align:left;display:flex;flex-direction:column;gap:2px;cursor:pointer;color:inherit;transition:background-color .15s ease}.structure-create-option:hover,.structure-create-option:focus-visible{background:#94a3b826;outline:none}.structure-create-label{font-size:.9rem;font-weight:600}.structure-create-description{font-size:.75rem;color:var(--muted)}.structure-empty-message{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;background:#94a3b81f;padding:12px 14px;border-radius:8px;color:var(--muted-foreground, var(--muted))}.structure-empty-message button{background:var(--surface);border:1px solid rgba(148,163,184,.35);border-radius:6px;padding:6px 12px;cursor:pointer;transition:background-color .15s ease,border-color .15s ease}.structure-empty-message button:hover,.structure-empty-message button:focus-visible{background:#94a3b82e;border-color:#94a3b88c;outline:none}.sme-slots-panel{position:relative;padding:4px 6px}.sme-subtitle{display:flex;align-items:center;justify-content:flex-start;font-weight:600;color:var(--text-secondary, #525252)}.slots-loading{padding:12px;text-align:center;color:var(--text-secondary, #525252);font-size:12px}.slots-list{display:flex;flex-direction:row;justify-content:flex-start;align-items:center;gap:12px;padding:6px 0}.slot-item{position:relative;width:44px;height:44px;border-radius:50%;background:var(--surface-primary, #fdfbf7);border:2px solid var(--border-primary, #e0ded8);cursor:grab;transition:all .15s ease;-webkit-user-select:none;user-select:none;display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--text-primary, #222)}.slot-item:active{cursor:grabbing}.slot-item.slot-dragging{opacity:.55;cursor:grabbing}.slot-item:hover{background:var(--surface-secondary, #f9f8f3);border-color:var(--accent-primary, #FACC15)}.slot-item.slot-active{border-color:var(--accent-primary, #FACC15);background:color-mix(in srgb,var(--accent-primary, #FACC15) 25%,var(--surface-primary, #fdfbf7));color:#111}.slot-item.slot-published{border-color:var(--old-gold, #CFB53B);border-style:dashed}.slot-item.slot-published.slot-active{background:color-mix(in srgb,var(--old-gold, #CFB53B) 20%,var(--surface-primary, #fdfbf7));color:#2f1f00}.slot-item:focus-visible{outline:2px solid var(--accent-primary, #FACC15);outline-offset:2px}.slot-letter{font-size:16px;font-weight:700;letter-spacing:.5px}.slot-info-panel{position:absolute;width:220px;padding:12px;border-radius:6px;border:1px solid transparent;box-shadow:0 4px 12px 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0}}.sme-dropdown{position:relative}.sme-dropdown-trigger{display:inline-flex;align-items:center;gap:6px;background:none;border:none;color:var(--text-primary);font-family:var(--font-serif);font-weight:700;font-size:16px;cursor:pointer;padding:4px 10px;border-radius:4px;transition:background .15s}.sme-dropdown-trigger:hover{background:var(--surface-secondary, #f9f8f3)}.user-name.admin{color:var(--old-gold);font-weight:700}.user-name.sme{font-weight:700}.role-badge.admin{display:inline-flex;align-items:center;padding:2px 6px;margin-left:4px;background:var(--old-gold);color:var(--jet);border:1px solid var(--old-gold);border-radius:3px;font-size:10px;font-weight:700}.role-badge.sme{display:inline-flex;align-items:center;padding:2px 6px;margin-left:4px;background:var(--accent-primary, #FACC15);color:#000;border:1px solid var(--accent-primary, #FACC15);border-radius:3px;font-size:10px;font-weight:700}.sme-dropdown-menu{position:absolute;top:calc(100% + 4px);right:0;min-width:220px;background:var(--surface-primary, #fdfbf7);border:1px solid var(--border-primary, #e0ded8);border-radius:6px;box-shadow:0 4px 12px #0000001a;z-index:1000;padding:4px}.sme-dropdown-submenu{position:absolute;right:100%;top:0;min-width:280px;max-height:320px;overflow:auto;background:var(--surface-primary, #fdfbf7);border:1px solid var(--border-primary, #e0ded8);border-radius:6px;box-shadow:0 4px 12px #0000001a;padding:6px;pointer-events:auto}.sme-list-item{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:6px 8px;border-radius:6px}.sme-list-item:hover{background:var(--surface-secondary, #f9f8f3)}.sme-name{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sme-actions{display:inline-flex;gap:6px;opacity:.85}.sme-list-item:hover .sme-actions{opacity:1}.sme-chip{font-size:11px;opacity:.7}.sme-selected{outline:2px solid var(--accent-primary, #FACC15);outline-offset:2px}.sme-subtitle{font-size:12px;color:var(--muted, #6b7280);padding:4px 8px}.sme-submenu-busy{position:absolute;top:6px;right:8px;width:14px;height:14px;border:2px solid var(--border-primary, #e0ded8);border-top-color:var(--text-primary, #222);border-radius:50%;animation:smeSpin .8s linear infinite}@keyframes smeSpin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.toggle-item{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;font-size:13px;color:var(--text-secondary, #525252)}.app-header.sme-edit .sme-dropdown-trigger{color:var(--vanilla);background:color-mix(in srgb,var(--vanilla) 5%,transparent);border:1px solid color-mix(in srgb,var(--old-gold) 20%,transparent)}.app-header.sme-edit .sme-dropdown-trigger:hover{background:color-mix(in srgb,var(--old-gold) 15%,transparent);color:var(--vanilla)}.app-header.sme-edit .sme-dropdown-menu{background:var(--drab-dark-brown);border:1px solid var(--old-gold)}.app-header.sme-edit .sme-dropdown-menu .dropdown-item{color:var(--vanilla)}.app-header.sme-edit 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.selection-item{color:var(--walnut-brown);background:var(--vanilla);opacity:1;visibility:visible;font-weight:500;border:1px solid color-mix(in srgb,var(--walnut-brown) 15%,transparent);outline:none;box-shadow:var(--shadow-sm);padding:6px 12px;border-radius:12px;display:inline-flex;align-items:center;gap:6px}.app-header.sme-edit .selection-item span{color:var(--walnut-brown);font-weight:600}.app-header.sme-edit .action-group svg{stroke:var(--walnut-brown);opacity:1;visibility:visible}.app-header.sme-edit .btn,.app-header.sme-edit .btn-outline{border-color:var(--old-gold);color:var(--vanilla);background:transparent}.app-header.sme-edit .btn:hover,.app-header.sme-edit .btn-outline:hover{background:var(--old-gold);color:var(--jet)}.app-header.sme-edit .btn-primary{background:var(--old-gold);color:var(--jet);border-color:var(--old-gold)}.app-header.sme-edit .btn-primary:hover{background:var(--old-gold);opacity:.9}.app-header.sme-edit:after{content:"";position:absolute;left:0;right:0;bottom:-12px;height:24px;pointer-events:none;background:radial-gradient(50% 80% at 50% 0%,color-mix(in srgb,var(--old-gold) 40%,transparent),transparent 70%);filter:blur(8px)}.app-header:before{content:"";position:absolute;top:0;left:0;right:0;margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw);height:100%;background:inherit;z-index:-1}.app-header .header-content{display:grid;grid-template-columns:auto 1fr auto;align-items:center;height:64px;gap:8px;padding-left:6px!important;position:relative}.app-header .course-logo{justify-self:start}.app-header .nav-region{display:inline-flex;align-items:center;gap:12px;min-width:0;flex-wrap:nowrap}.app-header .student-nav-region{display:grid;grid-template-columns:minmax(0,auto) minmax(220px,1fr);align-items:center;column-gap:12px;width:100%;min-width:0}.app-header .student-nav-region 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