@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap";
:root{--color-primary:#6366f1;--color-primary-hover:#4f46e5;--color-primary-light:#e0e7ff;--color-primary-ghost:#6366f114;--color-bg:#f8f9fc;--color-bg-secondary:#fff;--color-bg-tertiary:#f1f3f9;--color-surface:#fff;--color-surface-hover:#f4f5fa;--color-surface-active:#eef0f8;--color-border:#e2e5f0;--color-border-light:#eef0f6;--color-text:#1a1d2e;--color-text-secondary:#5c607a;--color-text-tertiary:#9397b0;--color-text-inverse:#fff;--color-success:#10b981;--color-warning:#f59e0b;--color-danger:#ef4444;--color-danger-ghost:#ef444414;--color-info:#3b82f6;--color-success-text:#047857;--color-danger-text:#b91c1c;--page-bg:#fff;--page-line-color:#d1d5e8;--page-margin-color:#e8b4b8;--page-width:816px;--page-padding:40px;--page-line-height:32px;--sidebar-width:280px;--sidebar-bg:#ffffffd9;--sidebar-border:var(--color-border);--toolbar-bg:#ffffffeb;--toolbar-shadow:0 4px 24px #00000014, 0 1px 4px #0000000a;--toolbar-radius:16px;--toolbar-height:52px;--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--font-mono:"JetBrains Mono", "Fira Code", monospace;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-8:32px;--space-10:40px;--space-12:48px;--space-16:64px;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--radius-xl:20px;--radius-full:9999px;--shadow-xs:0 1px 2px #0000000a;--shadow-sm:0 2px 6px #0000000f;--shadow-md:0 4px 12px #00000014;--shadow-lg:0 8px 28px #0000001a;--shadow-xl:0 16px 48px #0000001f;--transition-fast:.12s ease;--transition-base:.2s ease;--transition-slow:.35s ease;--transition-spring:.5s cubic-bezier(.22, 1, .36, 1);--z-sidebar:250;--z-toolbar:200;--z-modal:300;--z-tooltip:400}[data-theme=dark]{--color-bg:#0f1117;--color-bg-secondary:#161822;--color-bg-tertiary:#1c1e2e;--color-surface:#1c1e2e;--color-surface-hover:#252840;--color-surface-active:#2d3054;--color-border:#2a2d42;--color-border-light:#22253a;--color-text:#e8eaf0;--color-text-secondary:#9ea2bc;--color-text-tertiary:#5c607a;--color-primary-light:#2a2d60;--color-primary-ghost:#6366f11f;--color-danger-ghost:#ef444429;--color-success-text:#34d399;--color-danger-text:#f87171;--page-bg:#1a1c2a;--page-line-color:#2a2d42;--page-margin-color:#4a2a2e;--sidebar-bg:#161822e6;--toolbar-bg:#1c1e2ef2;--toolbar-shadow:0 4px 24px #00000040, 0 1px 4px #00000026}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility;font-size:16px}body{font-family:var(--font-sans);color:var(--color-text);background-color:var(--color-bg);width:100dvw;height:100dvh;line-height:1.6;overflow:hidden}#__next{height:100%}.visually-hidden{clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.app-layout{width:100dvw;height:100dvh;display:flex;overflow:hidden}.app-main{flex-direction:column;flex:1;display:flex;position:relative;overflow:hidden}.library-screen,.note-status-screen{background:var(--color-bg);flex-direction:column;flex:1;min-width:0;height:100%;display:flex}.library-topbar{justify-content:space-between;align-items:center;gap:var(--space-4);min-height:64px;padding:var(--space-2) var(--space-6);background:var(--color-surface);border-bottom:1px solid var(--color-border-light);flex-shrink:0;display:flex}.library-wordmark{color:var(--color-primary);letter-spacing:-.3px;font-size:20px;font-weight:700}.library-body{flex:1;align-items:stretch;min-height:0;display:flex}.library-nav{border-right:1px solid var(--color-border-light);background:var(--color-surface);flex-direction:column;flex:0 0 clamp(280px,30%,380px);min-height:0;display:flex}.library-nav-scroll{overscroll-behavior:contain;min-height:0;padding:var(--space-3);flex:1;overflow-y:auto}.library-divider-group{margin-bottom:var(--space-2)}.library-divider-row{align-items:center;gap:var(--space-3);width:100%;min-height:48px;padding:var(--space-2) var(--space-3);border-radius:var(--radius-md);font-family:var(--font-sans);color:var(--color-text);text-align:left;cursor:pointer;transition:background var(--transition-fast);background:0 0;border:none;font-size:15px;font-weight:600;display:flex}.library-divider-row:hover{background:var(--color-surface-hover)}.library-divider-chevron{color:var(--color-text-tertiary);transition:transform var(--transition-fast);display:inline-flex}.library-divider-chevron.collapsed{transform:rotate(-90deg)}.library-subjects{padding:var(--space-1) 0 var(--space-1) var(--space-6);flex-direction:column;gap:2px;display:flex}.library-subject-row{align-items:center;gap:var(--space-2);width:100%;min-height:44px;padding:var(--space-2) var(--space-3);border-radius:var(--radius-md);font-family:var(--font-sans);color:var(--color-text-secondary);text-align:left;cursor:pointer;transition:background var(--transition-fast), color var(--transition-fast);background:0 0;border:none;font-size:14px;font-weight:500;display:flex}.library-subject-row:hover{background:var(--color-surface-hover);color:var(--color-text)}.library-subject-row.active{background:var(--color-primary-ghost);color:var(--color-primary);font-weight:600}.library-subject-row:focus-visible,.library-divider-row:focus-visible{box-shadow:inset 0 0 0 2px var(--color-primary);outline:none}.library-subject-add{color:var(--color-text-tertiary)}.library-subject-add:hover{color:var(--color-primary)}.library-row-dot{border-radius:var(--radius-full);flex-shrink:0;width:10px;height:10px}.library-row-label{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.library-row-count{color:var(--color-text-tertiary);flex-shrink:0;font-size:12px;font-weight:500}.library-nav-footer{padding:var(--space-3);border-top:1px solid var(--color-border-light);flex-shrink:0}.library-add-btn{width:100%;min-height:44px;padding:var(--space-2) var(--space-3);border:1px dashed var(--color-border);border-radius:var(--radius-md);font-family:var(--font-sans);color:var(--color-text-secondary);cursor:pointer;transition:border-color var(--transition-fast), color var(--transition-fast);background:0 0;font-size:14px;font-weight:500}.library-add-btn:hover{border-color:var(--color-primary);color:var(--color-primary)}.library-inline-form{padding:var(--space-2) 0}.library-inline-form .modal-input{margin-bottom:var(--space-2)}.library-notes-pane{background:var(--color-bg);flex-direction:column;flex:auto;min-width:0;min-height:0;display:flex}.library-notes-header{align-items:center;gap:var(--space-3);min-height:64px;padding:var(--space-3) var(--space-6);border-bottom:1px solid var(--color-border-light);flex-shrink:0;display:flex}.library-notes-header h1{letter-spacing:-.01em;white-space:nowrap;text-overflow:ellipsis;flex:1;min-width:0;font-size:20px;font-weight:700;overflow:hidden}.library-new-note-btn{flex-shrink:0}.library-notes-back{border-radius:var(--radius-md);width:40px;height:40px;color:var(--color-text-secondary);cursor:pointer;background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;display:none}.library-notes-back:hover{background:var(--color-surface-hover);color:var(--color-text)}.library-notes-search{padding:var(--space-4) var(--space-6) 0;flex-shrink:0}.library-notes-search .modal-input{margin:0}.library-notes-scroll{overscroll-behavior:contain;min-height:0;padding:var(--space-5) var(--space-6) var(--space-10);flex:1;overflow-y:auto}.library-note-create{max-width:420px;margin-bottom:var(--space-5);padding:0}.library-notes-empty{padding:var(--space-10) var(--space-4);text-align:center;color:var(--color-text-secondary);font-size:14px}.library-notes-placeholder{justify-content:center;align-items:center;gap:var(--space-3);color:var(--color-text-tertiary);flex-direction:column;flex:1;display:flex}.library-notes-placeholder p{font-size:14px}.library-notes-list{border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);overflow:hidden}.note-card-wrap{border-bottom:1px solid var(--color-border-light);grid-template-columns:1fr 44px;align-items:center;display:grid}.note-card-wrap:last-child{border-bottom:0}.note-card-wrap:hover{background:var(--color-surface-hover)}.note-card-wrap.active{background:var(--color-primary-ghost);box-shadow:inset 2px 0 0 var(--color-primary)}.library-notes-list .note-card{align-items:center;gap:var(--space-3);min-height:52px;padding:var(--space-2) 0 var(--space-2) var(--space-4);background:0 0;border:0;border-radius:0;margin:0;transition:none;display:flex}.library-notes-list .note-card:focus-visible{outline:2px solid var(--color-primary);outline-offset:-2px}.library-notes-list .note-card-title{flex:1;min-width:0;margin:0}.library-notes-list .note-card-meta{flex-shrink:0;justify-content:flex-end}.note-card-delete{border-radius:var(--radius-md);width:32px;height:32px;color:var(--color-text-tertiary);cursor:pointer;opacity:0;transition:opacity var(--transition-fast), background var(--transition-fast), color var(--transition-fast);background:0 0;border:0;justify-content:center;justify-self:center;align-items:center;display:flex}.note-card-wrap:hover .note-card-delete,.note-card-delete:focus-visible{opacity:1}@media (hover:none){.note-card-delete{opacity:1}}.note-card-delete:hover{background:var(--color-danger-ghost);color:var(--color-danger)}.note-card-delete:focus-visible{outline:2px solid 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var(--space-4)}}.sidebar{width:var(--sidebar-width);background:var(--sidebar-bg);-webkit-backdrop-filter:blur(20px);border-right:1px solid var(--color-border);height:100%;z-index:var(--z-sidebar);transition:transform var(--transition-spring), width var(--transition-spring);flex-direction:column;flex-shrink:0;display:flex;overflow:hidden}.sidebar.collapsed{border-right:none;width:0}.sidebar.notes-sidebar{background:var(--color-surface);width:320px}.sidebar.notes-sidebar.collapsed{border-right:none;width:0}.sidebar-header{padding:var(--space-4) var(--space-5);border-bottom:1px solid var(--color-border-light);flex-shrink:0;justify-content:space-between;align-items:center;min-height:56px;display:flex}.sidebar-header h1{color:var(--color-primary);letter-spacing:-.3px;font-size:18px;font-weight:700}.sidebar-search{padding:var(--space-3) var(--space-4);flex-shrink:0}.sidebar-search input{width:100%;padding:var(--space-2) var(--space-3);border:1px solid 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0;width:3px;position:absolute;top:4px;bottom:4px;left:0}.subject-color-dot{border-radius:var(--radius-full);flex-shrink:0;width:8px;height:8px}.note-card{padding:var(--space-3) var(--space-4);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);margin-bottom:var(--space-1);border:1px solid #0000}.note-card:hover{background:var(--color-surface-hover);border-color:var(--color-border-light)}.note-card.active{background:var(--color-primary-ghost);border-color:var(--color-primary)}.note-card-title{color:var(--color-text);margin-bottom:var(--space-1);white-space:nowrap;text-overflow:ellipsis;font-size:14px;font-weight:500;overflow:hidden}.note-card-meta{justify-content:space-between;align-items:center;gap:var(--space-2);min-width:0;display:flex}.note-card-date{text-overflow:ellipsis;white-space:nowrap;min-width:0;color:var(--color-text-secondary);font-size:12px;overflow:hidden}.note-card-role{border-radius:var(--radius-sm);background:var(--color-primary-ghost);color:var(--color-primary);text-transform:uppercase;letter-spacing:.2px;flex-shrink:0;padding:1px 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h2{white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:15px;font-weight:600;overflow:hidden}.recap-composer-meta{color:var(--color-text-secondary);white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:12px;overflow:hidden}.recap-tabs{border:1px solid var(--color-border);border-radius:var(--radius-md);flex-shrink:0;display:flex;overflow:hidden}.recap-tab{min-width:76px;min-height:44px;padding:0 var(--space-4);font-family:var(--font-sans);color:var(--color-text-secondary);cursor:pointer;transition:background var(--transition-fast), color var(--transition-fast);background:0 0;border:none;font-size:13px;font-weight:600}.recap-tab[aria-selected=true]{background:var(--color-primary-ghost);color:var(--color-primary)}.recap-tab:focus-visible{box-shadow:inset 0 0 0 2px var(--color-primary);outline:none}.recap-composer-scroll{overscroll-behavior:contain;min-height:0;padding:var(--space-8) var(--space-4) var(--space-12);flex:1;overflow-y:auto}.recap-composer-column{width:min(720px,100%);margin:0 auto}.recap-composer .recap-preview{background:var(--color-surface)}.recap-composer .btn:focus-visible,.recap-composer .recap-inline-link-btn:focus-visible,.recap-composer .recap-link-fallback:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.recap-composer-hint{color:var(--color-text-secondary);margin:0;font-size:13px}.recap-preview-intro{justify-content:space-between;align-items:center;gap:var(--space-3);margin-bottom:var(--space-4);outline:none;flex-wrap:wrap;display:flex}.recap-invite{background:var(--color-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-lg);padding:var(--space-10) var(--space-8)}.recap-invite h3{margin:0 0 var(--space-2);font-size:18px;font-weight:600}.recap-invite p{margin:0 0 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minmax(0,1fr);display:grid;position:fixed;top:0;bottom:0;left:0;transform:translate(0)}.library-drawer.subjects-only{grid-template-columns:1fr;width:min(82vw,280px)}.library-drawer.collapsed{pointer-events:none;width:min(86vw,420px);transform:translate(-100%)}.library-drawer.subjects-only.collapsed{width:min(82vw,280px)}.library-drawer .sidebar,.library-drawer .sidebar.notes-sidebar{width:auto;min-width:0;height:100%;box-shadow:none;z-index:auto;position:relative;top:auto;bottom:auto;left:auto}.library-drawer #library-sidebar{width:auto}.sidebar-header{padding:var(--space-3)}.sidebar-header h1{font-size:16px}.divider-header,.subject-item{padding-left:var(--space-3);padding-right:var(--space-3)}.subject-create-form{padding-left:var(--space-3)}.note-header{padding:var(--space-2) var(--space-3)}.note-title-input{font-size:15px}.account-name,.role-badge,.presence-avatars{display:none}.floating-toolbar{top:auto;bottom:calc(env(safe-area-inset-bottom) + var(--space-3));scrollbar-width:none;gap:2px;max-width:calc(100vw - 16px);height:auto;padding:6px;overflow-x:auto}.floating-toolbar::-webkit-scrollbar{display:none}.tool-btn{width:34px;height:34px}.tool-config-popover{top:auto;bottom:calc(env(safe-area-inset-bottom) + 68px);max-width:calc(100vw - 24px);position:fixed;left:50%}.note-page-scroll{padding:var(--space-2) var(--space-2) calc(var(--toolbar-height) + 36px)}.modal-overlay{padding:var(--space-3);align-items:flex-end}.modal{width:100%;max-width:none;max-height:calc(100dvh - 24px);padding:var(--space-4);border-radius:var(--radius-lg)}#user-setup-modal{width:100%!important}#share-modal{width:100%}.share-link-row{flex-direction:column}.share-link-row .btn{width:100%}}@media (max-width:420px){.library-drawer,.library-drawer.has-notes{grid-template-columns:108px minmax(0,1fr);width:min(88vw,340px)}.library-drawer.collapsed{width:min(88vw,340px)}.sidebar-search{padding:var(--space-2)}.note-card{padding:var(--space-2) var(--space-3)}.btn{padding-left:var(--space-3);padding-right:var(--space-3)}}.floating-toolbar{top:calc(env(safe-area-inset-top) + 64px)}.note-page-scroll{padding-top:calc(var(--space-8) + var(--toolbar-height))}@media (max-width:768px){.floating-toolbar{top:auto;bottom:calc(env(safe-area-inset-bottom) + var(--space-3))}.note-page-scroll{padding:var(--space-2) var(--space-2) calc(var(--toolbar-height) + 36px)}}.note-page-scroll{justify-content:flex-start;align-items:flex-start;overflow-x:auto}.note-page-frame{flex-shrink:0;margin:0 auto;position:relative}.note-page-frame .note-page{transform-origin:0 0}.zoom-controls{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);flex-shrink:0;align-items:center;gap:2px;height:32px;padding:1px;display:inline-flex}.zoom-controls .btn-icon{border-radius:var(--radius-sm);width:28px;height:28px}.zoom-reset{min-width:54px;height:28px;padding:0 var(--space-2);background:var(--color-bg-tertiary);font-variant-numeric:tabular-nums;border:0;font-size:12px}.zoom-reset:hover{background:var(--color-surface-hover)}@media (max-width:768px){.zoom-controls{order:1}.zoom-reset{min-width:50px}}@media (pointer:coarse){.btn{height:auto;min-height:44px}.btn-icon,.tool-btn{width:44px;height:44px}.recap-action-btn{min-height:44px}.recap-inline-link-btn{padding:var(--space-2) 0}.recent-student-chip{padding:var(--space-2) var(--space-4)}}.recap-composer-footer{padding-bottom:max(var(--space-3), env(safe-area-inset-bottom))}