.react-flow{direction:ltr}.react-flow__container{position:absolute;width:100%;height:100%;top:0;left:0}.react-flow__pane{z-index:1;cursor:-webkit-grab;cursor:grab}.react-flow__pane.selection{cursor:pointer}.react-flow__pane.dragging{cursor:-webkit-grabbing;cursor:grabbing}.react-flow__viewport{transform-origin:0 0;z-index:2;pointer-events:none}.react-flow__renderer{z-index:4}.react-flow__selection{z-index:6}.react-flow__nodesselection-rect:focus,.react-flow__nodesselection-rect:focus-visible{outline:none}.react-flow .react-flow__edges{pointer-events:none;overflow:visible}.react-flow__edge-path,.react-flow__connection-path{stroke:#b1b1b7;stroke-width:1;fill:none}.react-flow__edge{pointer-events:visibleStroke;cursor:pointer}.react-flow__edge.animated path{stroke-dasharray:5;-webkit-animation:dashdraw .5s linear infinite;animation:dashdraw .5s linear infinite}.react-flow__edge.animated path.react-flow__edge-interaction{stroke-dasharray:none;-webkit-animation:none;animation:none}.react-flow__edge.inactive{pointer-events:none}.react-flow__edge.selected,.react-flow__edge:focus,.react-flow__edge:focus-visible{outline:none}.react-flow__edge.selected .react-flow__edge-path,.react-flow__edge:focus .react-flow__edge-path,.react-flow__edge:focus-visible .react-flow__edge-path{stroke:#555}.react-flow__edge-textwrapper{pointer-events:all}.react-flow__edge-textbg{fill:#fff}.react-flow__edge .react-flow__edge-text{pointer-events:none;-webkit-user-select:none;-moz-user-select:none;user-select:none}.react-flow__connection{pointer-events:none}.react-flow__connection .animated{stroke-dasharray:5;-webkit-animation:dashdraw .5s linear infinite;animation:dashdraw .5s linear infinite}.react-flow__connectionline{z-index:1001}.react-flow__nodes{pointer-events:none;transform-origin:0 0}.react-flow__node{position:absolute;-webkit-user-select:none;-moz-user-select:none;user-select:none;pointer-events:all;transform-origin:0 0;box-sizing:border-box;cursor:-webkit-grab;cursor:grab}.react-flow__node.dragging{cursor:-webkit-grabbing;cursor:grabbing}.react-flow__nodesselection{z-index:3;transform-origin:left top;pointer-events:none}.react-flow__nodesselection-rect{position:absolute;pointer-events:all;cursor:-webkit-grab;cursor:grab}.react-flow__handle{position:absolute;pointer-events:none;min-width:5px;min-height:5px;width:6px;height:6px;background:#1a192b;border:1px solid white;border-radius:100%}.react-flow__handle.connectionindicator{pointer-events:all;cursor:crosshair}.react-flow__handle-bottom{top:auto;left:50%;bottom:-4px;transform:translate(-50%)}.react-flow__handle-top{left:50%;top:-4px;transform:translate(-50%)}.react-flow__handle-left{top:50%;left:-4px;transform:translateY(-50%)}.react-flow__handle-right{right:-4px;top:50%;transform:translateY(-50%)}.react-flow__edgeupdater{cursor:move;pointer-events:all}.react-flow__panel{position:absolute;z-index:5;margin:15px}.react-flow__panel.top{top:0}.react-flow__panel.bottom{bottom:0}.react-flow__panel.left{left:0}.react-flow__panel.right{right:0}.react-flow__panel.center{left:50%;transform:translate(-50%)}.react-flow__attribution{font-size:10px;background:#ffffff80;padding:2px 3px;margin:0}.react-flow__attribution a{text-decoration:none;color:#999}@-webkit-keyframes dashdraw{0%{stroke-dashoffset:10}}@keyframes dashdraw{0%{stroke-dashoffset:10}}.react-flow__edgelabel-renderer{position:absolute;width:100%;height:100%;pointer-events:none;-webkit-user-select:none;-moz-user-select:none;user-select:none}.react-flow__edge.updating .react-flow__edge-path{stroke:#777}.react-flow__edge-text{font-size:10px}.react-flow__node.selectable:focus,.react-flow__node.selectable:focus-visible{outline:none}.react-flow__node-default,.react-flow__node-input,.react-flow__node-output,.react-flow__node-group{padding:10px;border-radius:3px;width:150px;font-size:12px;color:#222;text-align:center;border-width:1px;border-style:solid;border-color:#1a192b;background-color:#fff}.react-flow__node-default.selectable:hover,.react-flow__node-input.selectable:hover,.react-flow__node-output.selectable:hover,.react-flow__node-group.selectable:hover{box-shadow:0 1px 4px 1px #00000014}.react-flow__node-default.selectable.selected,.react-flow__node-default.selectable:focus,.react-flow__node-default.selectable:focus-visible,.react-flow__node-input.selectable.selected,.react-flow__node-input.selectable:focus,.react-flow__node-input.selectable:focus-visible,.react-flow__node-output.selectable.selected,.react-flow__node-output.selectable:focus,.react-flow__node-output.selectable:focus-visible,.react-flow__node-group.selectable.selected,.react-flow__node-group.selectable:focus,.react-flow__node-group.selectable:focus-visible{box-shadow:0 0 0 .5px #1a192b}.react-flow__node-group{background-color:#f0f0f040}.react-flow__nodesselection-rect,.react-flow__selection{background:#0059dc14;border:1px dotted rgba(0,89,220,.8)}.react-flow__nodesselection-rect:focus,.react-flow__nodesselection-rect:focus-visible,.react-flow__selection:focus,.react-flow__selection:focus-visible{outline:none}.react-flow__controls{box-shadow:0 0 2px 1px #00000014}.react-flow__controls-button{border:none;background:#fefefe;border-bottom:1px solid #eee;box-sizing:content-box;display:flex;justify-content:center;align-items:center;width:16px;height:16px;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;padding:5px}.react-flow__controls-button:hover{background:#f4f4f4}.react-flow__controls-button svg{width:100%;max-width:12px;max-height:12px}.react-flow__controls-button:disabled{pointer-events:none}.react-flow__controls-button:disabled svg{fill-opacity:.4}.react-flow__minimap{background-color:#fff}.react-flow__minimap svg{display:block}.react-flow__resize-control{position:absolute}.react-flow__resize-control.left,.react-flow__resize-control.right{cursor:ew-resize}.react-flow__resize-control.top,.react-flow__resize-control.bottom{cursor:ns-resize}.react-flow__resize-control.top.left,.react-flow__resize-control.bottom.right{cursor:nwse-resize}.react-flow__resize-control.bottom.left,.react-flow__resize-control.top.right{cursor:nesw-resize}.react-flow__resize-control.handle{width:4px;height:4px;border:1px solid #fff;border-radius:1px;background-color:#3367d9;transform:translate(-50%,-50%)}.react-flow__resize-control.handle.left{left:0;top:50%}.react-flow__resize-control.handle.right{left:100%;top:50%}.react-flow__resize-control.handle.top{left:50%;top:0}.react-flow__resize-control.handle.bottom{left:50%;top:100%}.react-flow__resize-control.handle.top.left,.react-flow__resize-control.handle.bottom.left{left:0}.react-flow__resize-control.handle.top.right,.react-flow__resize-control.handle.bottom.right{left:100%}.react-flow__resize-control.line{border-color:#3367d9;border-width:0;border-style:solid}.react-flow__resize-control.line.left,.react-flow__resize-control.line.right{width:1px;transform:translate(-50%);top:0;height:100%}.react-flow__resize-control.line.left{left:0;border-left-width:1px}.react-flow__resize-control.line.right{left:100%;border-right-width:1px}.react-flow__resize-control.line.top,.react-flow__resize-control.line.bottom{height:1px;transform:translateY(-50%);left:0;width:100%}.react-flow__resize-control.line.top{top:0;border-top-width:1px}.react-flow__resize-control.line.bottom{border-bottom-width:1px;top:100%}*{box-sizing:border-box}:root{font-family:Inter,Segoe UI,sans-serif;color:#e5edf8;background:#08131f;line-height:1.5;font-weight:500}html,body,#root{margin:0;min-height:100%;min-height:100vh;background:radial-gradient(circle at top left,rgba(124,92,255,.18),transparent 22%),linear-gradient(180deg,#091421,#0d1728);direction:rtl}body{margin:0}button{font:inherit}.teacher-shell{display:flex;min-height:100vh}.sidebar{width:260px;padding:28px 18px;border-left:1px solid rgba(148,163,184,.18);background:#09131fbf;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.brand{font-size:1.35rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:#f8fafc;margin:10px 12px 26px}.sidebar-nav{display:flex;flex-direction:column;gap:8px}.sidebar-nav a{color:#cbd5e1;text-decoration:none;padding:10px 12px;border-radius:10px;transition:.2s ease}.sidebar-nav a:hover,.sidebar-nav a.active{background:#6366f12e;color:#fff}.main-panel{flex:1;padding:32px}.teacher-page{width:min(1200px,100%);margin:0 auto}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.eyebrow{margin:0 0 6px;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:#a5b4fc}.page-header h1,.panel-header h2,.empty-state h2,.description-panel h2{margin:0;color:#f8fafc}.primary-button,.ghost-button,.logout-button,.login-button{border:none;border-radius:10px;cursor:pointer}.primary-button{background:linear-gradient(135deg,#7c3aed,#4f46e5);color:#fff;padding:11px 18px;font-weight:700}.ghost-button{background:#94a3b814;color:#dfe7f5;padding:8px 12px}.logout-button{margin-top:18px;width:100%;padding:10px 12px;background:#ef44441f;color:#fecaca;border:1px solid rgba(239,68,68,.2)}.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(180px,1fr));gap:18px;margin-bottom:26px}.stat-card,.panel,.empty-state,.description-panel{background:#0f172acc;border:1px solid rgba(148,163,184,.12);border-radius:16px;box-shadow:0 10px 22px #0f172a2e}.stat-card{padding:18px 20px;display:flex;flex-direction:column;gap:8px}.stat-card span{color:#a5b4fc;font-size:.8rem}.stat-card strong{font-size:clamp(1.7rem,3vw,2.2rem);color:#f8fafc}.stat-card small{color:#7dd3fc}.content-grid{display:grid;grid-template-columns:1.1fr 1.6fr;gap:20px}.panel{padding:18px 18px 8px}.description-panel{padding:18px 20px;margin-bottom:20px}.description-panel p{margin:8px 0 0;color:#cbd5e1}.panel-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.list-stack{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}.list-stack li{display:flex;justify-content:space-between;align-items:center;gap:16px;background:#0f172ab3;border:1px solid rgba(148,163,184,.08);border-radius:12px;padding:14px 16px}.list-stack strong,.list-stack span,.list-stack time{display:block}.list-stack span,.list-stack time{color:#a8b3c7;font-size:.8rem}.table-card{overflow:auto;border-radius:12px;border:1px solid rgba(148,163,184,.12)}.large-table{max-height:70vh}.table-card table{width:100%;min-width:700px;border-collapse:collapse;background:#0f172a99}.table-card th,.table-card td{padding:14px 16px;text-align:right;border-bottom:1px solid rgba(148,163,184,.1);color:#dfe7f5;vertical-align:top;word-break:break-word;white-space:normal}.table-card th{font-size:.76rem;letter-spacing:.08em;text-transform:uppercase;color:#a5b4fc;background:#1e293bb3;position:sticky;top:0}.status-badge{display:inline-block;background:#2dd4bf1f;color:#99f6e4;border-radius:999px;padding:5px 9px;font-size:.76rem;font-weight:700}.empty-state{padding:32px;margin-top:20px;text-align:center}.empty-state p{color:#cbd5e1;margin-bottom:0}.creation-flow{display:grid;grid-template-columns:repeat(3,minmax(240px,1fr));gap:20px}.create-panel{padding:20px}.create-panel h2{margin-top:0;margin-bottom:16px}.create-panel label{display:flex;flex-direction:column;gap:8px;margin-bottom:14px;color:#dfe7f5;font-size:.9rem}.create-panel input,.create-panel select,.create-panel textarea{width:100%;border:1px solid rgba(148,163,184,.18);border-radius:10px;background:#0f172ae6;color:#f8fafc;padding:10px 12px;font:inherit}.create-panel textarea{resize:vertical}.form-message{margin-top:14px;background:#60a5fa1f;border:1px solid rgba(96,165,250,.28);border-radius:10px;color:#dbeafe;padding:10px 12px}.button-link{display:inline-flex;align-items:center;justify-content:center;text-decoration:none}.login-screen{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:min(440px,100%);background:#0f172ad9;border:1px solid rgba(148,163,184,.12);border-radius:20px;padding:32px 28px;box-shadow:0 20px 48px #0f172a59}.login-card h1{margin:0 0 8px;font-size:clamp(2rem,4vw,2.4rem);color:#f8fafc}.login-subtitle{color:#b8c3d8;margin:0 0 24px;font-size:.9rem}.login-form{display:flex;flex-direction:column;gap:18px}.login-form label{display:flex;flex-direction:column;gap:8px;color:#dfe7f5;font-weight:600}.login-form input{width:100%;border:1px solid rgba(148,163,184,.18);border-radius:12px;background:#0f172ae6;color:#f8fafc;padding:12px 14px;font:inherit}.login-error{background:#ef44441a;border:1px solid rgba(239,68,68,.25);color:#fecaca;border-radius:10px;padding:10px 12px;font-size:.92rem}.login-button{width:100%;margin-top:8px;padding:12px 18px}.loading-card{text-align:center;color:#dfe7f5}.react-flow__pane{cursor:grab}.react-flow__controls{box-shadow:0 0 10px #00000080;border-radius:4px;overflow:hidden}.react-flow__background{background-color:#0f172a}.options-container{display:flex;flex-direction:column;gap:12px;margin-bottom:14px}.option-item{display:flex;align-items:center;gap:10px;background:#0f172ab3;padding:10px;border-radius:10px;border:1px solid rgba(148,163,184,.1)}.option-item input[type=text]{flex:1}.option-item label{display:flex;flex-direction:row;align-items:center;gap:6px;margin-bottom:0;white-space:nowrap}.option-item input[type=checkbox]{width:auto}.remove-option-btn{background:#ef444426;color:#fca5a5;border:1px solid rgba(239,68,68,.3);padding:6px 10px;border-radius:8px;cursor:pointer;font-size:.8rem}.add-option-btn{background:#2dd4bf26;color:#99f6e4;border:1px solid rgba(45,212,191,.3);padding:8px 12px;border-radius:10px;cursor:pointer;align-self:flex-start}.tree-container{background:#0f172acc;border:1px solid rgba(148,163,184,.12);border-radius:16px;padding:32px;min-height:400px}.tree-node-wrapper{margin-bottom:12px;position:relative}.tree-node{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;background:#1e293b66;border:1px solid rgba(148,163,184,.1);border-radius:14px;transition:all .25s cubic-bezier(.4,0,.2,1);position:relative;z-index:2}.tree-node:hover{background:#6366f11f;border-color:#6366f166;transform:translate(-4px);box-shadow:4px 4px 20px #0003}.node-content{display:flex;align-items:center;gap:16px}.toggle-btn{background:#6366f11a;border:1px solid rgba(99,102,241,.2);color:#a5b4fc;cursor:pointer;font-size:.75rem;padding:0;display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;transition:all .2s}.toggle-btn:hover{background:#6366f140;color:#fff}.node-name{font-weight:700;font-size:1.05rem;color:#f8fafc}.node-level{font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:#6366f1;background:#6366f126;padding:3px 10px;border-radius:20px;border:1px solid rgba(99,102,241,.2)}.node-actions{display:flex;gap:12px;opacity:.6;transition:opacity .2s}.tree-node:hover .node-actions{opacity:1}.add-child-btn{font-size:.8rem;font-weight:700;color:#2dd4bf;text-decoration:none;padding:7px 14px;background:#2dd4bf14;border:1px solid rgba(45,212,191,.2);border-radius:10px;transition:all .2s}.add-child-btn:hover{background:#2dd4bf26;border-color:#2dd4bf;color:#fff}.node-children{margin-top:12px;padding-right:12px;border-right:2px solid rgba(148,163,184,.08);position:relative}.node-children:before{content:"";position:absolute;top:-12px;right:-2px;bottom:24px;width:2px;background:linear-gradient(to bottom,rgba(99,102,241,.2),transparent)}@media(max-width:900px){.creation-flow{grid-template-columns:1fr}.teacher-shell{flex-direction:column}.sidebar{width:100%;border-right:0;border-bottom:1px solid rgba(148,163,184,.18)}.stats-grid,.content-grid{grid-template-columns:1fr}.page-header{flex-direction:column;align-items:flex-start;gap:14px}}