:root{--bg-color: #f0f4f8;--text-color: #2d3748;--panel-bg: rgba(255, 255, 255, .85);--accent-color: #6366f1;--accent-hover: #4f46e5;--danger-color: #ef4444;--success-color: #10b981;--glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, .15);--clay-shadow: 5px 5px 10px #bobecc, -5px -5px 10px #ffffff;--clay-inset: inset 5px 5px 10px #bobecc, inset -5px -5px 10px #ffffff;--font-main: "Fredoka", "Quicksand", sans-serif;--cell-size: 20px;--gap-size: 2px}body{margin:0;display:flex;justify-content:center;align-items:flex-start;min-height:100vh;background-color:var(--bg-color);background-image:radial-gradient(#e2e8f0 1px,transparent 1px);background-size:40px 40px;font-family:var(--font-main);color:var(--text-color);overflow-x:hidden;overflow-y:auto}#app{display:flex!important;flex-direction:column!important;width:100vw;height:100vh;padding:0;overflow:hidden;gap:0}.app-header{flex-shrink:0;height:56px;padding:0 20px;display:flex;align-items:center;justify-content:space-between;background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid #e2e8f0;z-index:101}.app-header-left{display:flex;align-items:center;gap:12px}.app-header-logo{height:48px;vertical-align:middle}.app-header .app-title{font-size:1.25rem;font-weight:600;color:var(--text-color)}.app-header-right{display:flex;align-items:center;gap:12px}.tl4k-session-badge{display:flex;align-items:center;gap:10px;padding:6px 12px;background:#6366f11f;border-radius:999px;font-size:.9rem}.tl4k-session-badge.hidden{display:none!important}.tl4k-session-avatar{width:28px;height:28px;border-radius:50%;overflow:hidden;flex-shrink:0;background:#e2e8f0}.tl4k-session-avatar svg{width:100%;height:100%;display:block}.tl4k-session-info{display:flex;flex-direction:column;align-items:flex-start;line-height:1.2}.tl4k-session-name{font-weight:600;color:var(--text-color)}.tl4k-session-class{font-size:.75rem;color:#64748b}.tl4k-btn-exit{margin-left:4px;padding:4px 8px;border:none;background:transparent;color:#64748b;cursor:pointer;border-radius:4px;font-size:1rem}.tl4k-btn-exit:hover{background:#0000000f;color:var(--danger-color)}.btn-join-session{padding:8px 16px;border-radius:8px;border:1px solid var(--accent-color);background:transparent;color:var(--accent-color);font-family:var(--font-main);font-size:.9rem;font-weight:600;cursor:pointer}.btn-join-session:hover{background:#6366f11a}.btn-admin{padding:8px 14px;border-radius:8px;border:1px solid #cbd5e1;background:transparent;color:#64748b;font-family:var(--font-main);font-size:.9rem;font-weight:500;text-decoration:none;cursor:pointer;display:inline-flex;align-items:center;gap:6px}.btn-admin:hover{background:#0000000d;color:var(--text-color);border-color:#94a3b8}.app-body{flex:1;min-height:0;display:flex;flex-direction:row;overflow:hidden}.app-sidebar{width:320px;flex-shrink:0;height:100%;padding:20px;display:flex;flex-direction:column;gap:20px;background:#fff;border-right:1px solid #e2e8f0;background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:100;overflow-y:auto}.sidebar-header{margin-bottom:20px}.app-title{font-size:1.2rem;font-weight:700;color:var(--accent-color)}.sidebar-content{display:flex;flex-direction:column;gap:15px}.toolbar-group{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}.settings-group-vertical{display:flex;flex-direction:column;gap:10px}.settings-group-vertical label{display:flex;align-items:center;justify-content:space-between;background:#fff;padding:8px 12px;border-radius:8px;box-shadow:0 2px 4px #0000000d}.resize-controls{display:flex;gap:2px;align-items:center;background:#fff;padding:4px;border-radius:8px;flex-wrap:wrap;justify-content:center}.resize-controls label{padding:2px 4px;background:none;box-shadow:none;font-size:.9rem;gap:2px}.sidebar-divider{height:1px;background:#cbd5e1;width:100%;margin:5px 0}#app-main{flex:1;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;overflow-y:auto;position:relative;padding:20px;background-color:var(--bg-color);background-image:radial-gradient(#e2e8f0 1px,transparent 1px);background-size:40px 40px}.glass-panel{background:var(--panel-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:24px;border:1px solid rgba(255,255,255,.4);box-shadow:var(--glass-shadow)}#app-header{width:auto;min-width:600px;max-width:95%;padding:8px 16px;display:flex;align-items:center;justify-content:space-between;margin-bottom:0;gap:20px}.settings-bar{display:flex;align-items:center;gap:20px;padding:6px 20px;margin-bottom:0;font-size:1rem;font-weight:500;flex-wrap:wrap;justify-content:center}.header-left{display:flex;align-items:center;gap:15px}.app-title{font-weight:600;font-size:1.4rem;color:var(--accent-color);letter-spacing:.5px}.header-center{display:flex;gap:12px;align-items:center}.separator{width:2px;height:28px;background:#cbd5e0;border-radius:2px;margin:0 4px}.icon-btn{background:#f0f4f8;border:none;cursor:pointer;width:44px;height:44px;border-radius:14px;color:#4a5568;font-size:1.4rem;display:flex;align-items:center;justify-content:center;transition:all .2s ease;box-shadow:4px 4px 8px #bec3c9,-4px -4px 8px #fff}.icon-btn.small{width:36px;height:36px;font-size:1.1rem}.icon-btn:hover{transform:translateY(-2px);color:var(--accent-color)}.icon-btn:active{box-shadow:inset 3px 3px 6px #bec3c9,inset -3px -3px 6px #fff;transform:translateY(1px)}.icon-btn.active{background:var(--accent-color);color:#fff;box-shadow:inset 3px 3px 6px #0003}.magic-btn{background:linear-gradient(135deg,gold,#9370db);color:#fff;border:1px solid rgba(255,255,255,.5)}.magic-btn:hover{transform:translateY(-2px) scale(1.1);box-shadow:0 0 15px #ffd70099}.settings-bar{display:flex;align-items:center;gap:20px;padding:10px 24px;margin-bottom:8px;font-size:1rem;font-weight:500;flex-wrap:wrap;justify-content:center}.settings-group{display:flex;align-items:center;gap:12px}.settings-group label{display:flex;align-items:center;gap:6px;cursor:pointer}input[type=checkbox]{appearance:none;width:20px;height:20px;background:#e2e8f0;border-radius:6px;cursor:pointer;position:relative;box-shadow:inset 2px 2px 4px #0000001a}input[type=checkbox]:checked{background:var(--accent-color)}input[type=checkbox]:checked:after{content:"✔";position:absolute;color:#fff;font-size:12px;left:4px;top:1px}.num-input{width:34px;padding:6px;border:none;border-radius:8px;background:#f0f4f8;box-shadow:inset 2px 2px 5px #0000001a;text-align:center;font-family:inherit;font-weight:600;color:var(--accent-color)}select{padding:6px 10px;border:none;border-radius:8px;background:#f0f4f8;box-shadow:3px 3px 6px #bec3c9,-3px -3px 6px #fff;font-family:inherit;color:var(--text-color);cursor:pointer}.lobby-container{display:flex;flex-direction:column;align-items:center;justify-content:center;height:80vh;text-align:center;padding-top:1rem}.main-title{font-size:4rem;font-weight:700;margin-bottom:.5rem;background:linear-gradient(135deg,#6366f1,#ec4899);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;filter:drop-shadow(2px 2px 0px rgba(0,0,0,.1))}.subtitle{color:#718096;font-size:1.4rem;margin-bottom:3rem}.mode-cards{display:flex;gap:40px}.mode-card{background:var(--panel-bg);padding:40px;border-radius:30px;width:220px;cursor:pointer;border:4px solid white;box-shadow:10px 10px 20px #0000001a,-10px -10px 20px #fff;transition:all .3s cubic-bezier(.34,1.56,.64,1)}.mode-card:hover{transform:translateY(-10px) scale(1.02);border-color:var(--accent-color);box-shadow:0 20px 40px #6366f133}.card-icon{font-size:4rem;margin-bottom:1rem}.mode-card h2{margin:0 0 10px;font-size:1.8rem;color:var(--text-color)}.mode-card p{color:#718096;font-size:1rem;line-height:1.5}#mode-container{display:flex;flex-direction:column;align-items:center;gap:0px}.canvas-wrapper{position:relative;display:flex;flex-direction:column;background:#fff;padding:15px;border-radius:20px;box-shadow:var(--clay-shadow);border:4px solid white;margin-bottom:0}.middle-section{display:flex;flex-direction:row}.grid-container{display:grid;grid-template-columns:repeat(45,var(--cell-size));grid-template-rows:repeat(20,var(--cell-size));gap:var(--gap-size);background-color:#cbd5e0;padding:var(--gap-size);border-radius:4px}.cell{width:var(--cell-size);height:var(--cell-size);background-color:#fff;border-radius:4px;transition:background-color .1s ease}.axis{display:flex;justify-content:center;align-items:center;font-size:10px;color:#718096;font-weight:700;opacity:.7}.axis-top,.axis-bottom,.axis-top-outer,.axis-bottom-outer{height:25px;display:grid;grid-template-columns:repeat(45,var(--cell-size));gap:var(--gap-size);margin-left:25px;margin-right:25px;padding-left:var(--gap-size)}.axis-left,.axis-right{width:25px;display:grid;grid-template-rows:repeat(20,var(--cell-size));gap:var(--gap-size);padding-top:var(--gap-size)}.coord-label{display:flex;justify-content:center;align-items:center;width:100%;height:100%}.palette-container{display:flex!important;flex-direction:column;gap:12px!important;margin-top:20px!important;padding:15px!important;flex-shrink:0!important;position:relative!important;z-index:50!important;background:#fff!important;border-radius:20px!important;box-shadow:0 10px 25px #0000001a!important;border:1px solid #e2e8f0!important}.palette-row{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}.color-swatch{width:32px;height:32px;border-radius:50%;cursor:pointer;border:3px solid white;box-shadow:2px 2px 5px #0000001a;transition:transform .2s cubic-bezier(.34,1.56,.64,1)}.color-swatch.selected{transform:scale(1.25);box-shadow:0 0 0 3px var(--text-color);z-index:5}.color-swatch:hover{transform:scale(1.15)}.toast-container{position:fixed;top:30px;left:50%;transform:translate(-50%);z-index:2000;pointer-events:none}.toast{background:#2d3748f2;color:#fff;padding:14px 28px;border-radius:50px;margin-bottom:15px;box-shadow:0 10px 30px #0003;font-weight:500;display:flex;align-items:center;justify-content:center;animation:slideDown .4s cubic-bezier(.68,-.55,.265,1.55)}.toast.success{background:#10b981}.toast.error{background:#ef4444}@keyframes slideDown{0%{transform:translateY(-50px) scale(.8);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}.hover-indicator{position:absolute;background-color:var(--accent-color);opacity:.5;pointer-events:none;display:none;z-index:10;border-radius:2px}.axis-marker-top,.axis-marker-bottom{width:var(--cell-size);height:4px}.axis-marker-left,.axis-marker-right{width:4px;height:var(--cell-size)}.dialog-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000073;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);display:flex;justify-content:center;align-items:center;z-index:2000;animation:fadeIn .2s ease-out}.dialog-box{background:#fff;padding:30px;border-radius:20px;text-align:center;min-width:320px;max-width:90%;box-shadow:0 20px 40px #0000001a,inset 0 -4px #0000000d;animation:scaleIn .3s cubic-bezier(.175,.885,.32,1.275)}.dialog-box h3{margin-top:0;color:var(--accent-color);font-size:1.6rem;margin-bottom:15px}.dialog-box p{color:#64748b;margin-bottom:30px;font-size:1.1rem;line-height:1.5}.dialog-buttons{display:flex;justify-content:center;gap:15px}.dialog-btn{padding:12px 28px;border:none;border-radius:12px;font-family:inherit;font-weight:600;cursor:pointer;transition:all .2s;font-size:1rem}.dialog-btn.primary{background:var(--accent-color);color:#fff;box-shadow:0 4px #4f46e5}.dialog-btn.primary:active{transform:translateY(4px);box-shadow:none}.dialog-btn.secondary{background:#e2e8f0;color:#64748b;box-shadow:0 4px #cbd5e0}.dialog-btn.secondary:active{transform:translateY(4px);box-shadow:none}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes scaleIn{0%{transform:scale(.8);opacity:0}to{transform:scale(1);opacity:1}}@media screen and (max-height:800px){.app-sidebar{padding:10px;width:60px;width:200px}.canvas-wrapper{transform:scale(.8);transform-origin:top center;margin-bottom:20px}}transform-origin: center top; } .palette-container{padding:8px;margin-top:5px}} @media screen and (min-width: 2000px){:root{--cell-size: 26px}.canvas-wrapper{transform:scale(1.2);transform-origin:center top;margin-top:50px}}.split-view{display:flex;flex-direction:row;justify-content:center;align-items:flex-start;gap:40px;width:100%}.reference-view{display:flex;flex-direction:column;align-items:center}.reference-header{padding:8px 20px;margin-bottom:15px;font-weight:600;color:var(--text-color);background:#fff9;border-radius:12px}#reference-container .canvas-wrapper{background:#f8fafc;border-color:#e2e8f0;pointer-events:none}.coding-dock{position:fixed;bottom:10px;left:20px;right:20px;width:auto;height:280px;background:#ffffffe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:24px;box-shadow:8px 8px 24px #a6b4c866,-8px -8px 24px #ffffffe6,inset 2px 2px 4px #fffc,inset -2px -2px 4px #0000000d;display:flex;flex-direction:column;z-index:1000;padding:15px;border:1px solid rgba(255,255,255,.4)}.dock-header{height:50px;display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.mode-selector{display:flex;gap:10px;background:#eef2f6;padding:5px;border-radius:16px;box-shadow:inset 2px 2px 6px #a6b4c84d}.dock-tab{background:transparent;border:none;color:#64748b;padding:8px 20px;border-radius:12px;cursor:pointer;font-weight:600;transition:all .2s;font-size:.95rem}.dock-tab.active{background:#fff;color:var(--accent-color);box-shadow:2px 2px 8px #a6b4c833}.dock-body{flex:1;display:flex;gap:15px;overflow:hidden}.block-palette{width:260px;background:#eef2f6;border-radius:16px;padding:10px;display:flex;flex-wrap:wrap;gap:8px;overflow-y:auto;align-content:flex-start;box-shadow:inset 4px 4px 10px #a6b4c833}.timeline-container{flex:1;background:#fff;border-radius:16px;display:flex;flex-direction:column;overflow:hidden;border:2px solid #e2e8f0}.timeline-toolbar{display:flex;gap:10px;padding:8px 12px;background:#f8fafc;border-bottom:1px solid #e2e8f0;align-items:center}.timeline-toolbar .add-row-btn{margin-left:auto;background:var(--accent-color);color:#fff;font-size:1.2rem;font-weight:700}.timeline{display:flex;flex-direction:column;gap:6px;padding:10px;overflow-y:auto;overflow-x:hidden;max-height:230px;scroll-behavior:smooth}.timeline-row{display:flex;align-items:center;gap:8px;min-height:40px}.timeline-row-number{width:25px;text-align:right;font-weight:600;color:#64748b;font-size:.85rem;flex-shrink:0;-webkit-user-select:none;user-select:none}.timeline-row-blocks{flex:1;display:flex;gap:3px;align-items:center;min-height:38px;padding:3px 8px;background:#ffffff80;border-radius:8px;border:1px dashed #cbd5e1;overflow-x:auto;scroll-behavior:smooth}.timeline-row-blocks.drag-over{border-color:var(--accent-color);background:#6366f114}.timeline-row-blocks:empty:after{content:"";display:block;width:100%;height:35px}.timeline-placeholder{width:100%;text-align:center;color:#94a3b8;font-weight:500;pointer-events:none;position:absolute;left:0}.code-block{height:40px;min-width:40px;width:40px;padding:0;color:#fff;border:none;border-radius:8px;display:flex;justify-content:center;align-items:center;font-size:1.5rem;cursor:grab;-webkit-user-select:none;user-select:none;position:relative;margin-right:3px;box-shadow:0 3px #0003,inset 0 1px #fff6,inset 0 -1px #0000001a;background-image:linear-gradient(to bottom,#ffffff26,#0000000d);transition:transform .1s,box-shadow .1s;flex-shrink:0;scroll-margin:50px}.code-block img{width:32px;height:32px;object-fit:contain;pointer-events:none}.block-paint{position:relative}.block-paint img{position:absolute;top:0;right:0;z-index:5}.code-block:active{transform:translateY(4px);box-shadow:inset 0 1px #fff6}.block-start{background-color:#fbed21;background:linear-gradient(to bottom,#fff59d,#fbc02d);color:#333;border-radius:8px;border:1px solid #fbc02d;margin-right:-3px;z-index:5;min-width:60px!important;width:60px!important;height:40px!important;display:flex!important;justify-content:center;align-items:center;flex-shrink:0!important;cursor:not-allowed!important}.block-repeat{background-color:#ff9800!important;background:linear-gradient(to bottom,#ffb74d,#f57c00)!important;color:#fff;border:1px solid #ef6c00}.block-move,.block-turn{background-color:#4c97ff;background:linear-gradient(to bottom,#64b5f6,#4c97ff);border:1px solid #3373cc}.block-paint{background-color:#0fbd8c;background:linear-gradient(to bottom,#4ade80,#0fbd8c);border:1px solid #0a8f69;color:#fff}.block-control,.block-repeat{background-color:#ffab19;background:linear-gradient(to bottom,#ffb74d,#ffab19);border:1px solid #cf8b17;box-shadow:0 3px #0003,inset 0 1px #fff6,inset 0 -1px #0000001a!important}.block-loop{background-color:#ffab19}.color-badge{width:14px;height:14px;border-radius:50%;border:2px solid white;position:absolute;bottom:2px;left:2px;background-color:currentColor;box-shadow:0 2px 4px #0003;z-index:1}.code-block.executing{animation:pulse-highlight .5s ease-in-out;z-index:20}@keyframes pulse-highlight{0%,to{box-shadow:0 0 12px gold,0 0 20px #ffd70080;transform:scale(1.08)}50%{box-shadow:0 0 20px gold,0 0 30px #ffd700b3;transform:scale(1.12)}}.mode-card{background:#fff;border:none;border-radius:20px;padding:2rem;display:flex;flex-direction:column;align-items:center;justify-content:center;width:280px;height:320px;cursor:pointer;box-shadow:8px 8px 16px #d1d5db,-8px -8px 16px #fff;transition:all .3s ease;text-align:center;color:#4a5568;font-family:inherit}.mode-card:hover{transform:translateY(-8px);color:var(--accent-color)}.mode-icon{font-size:5rem;margin-bottom:1.5rem;line-height:1}.mode-icon-grid{width:5rem;height:5rem;display:flex;align-items:center;justify-content:center}.mode-icon-grid svg{width:100%;height:100%;display:block}.mode-card h2{font-size:1.8rem;margin-bottom:.5rem;font-weight:700}.mode-card p{font-size:1rem;color:#94a3b8;line-height:1.4}#coding-grid{gap:2px!important;padding:0!important;background-color:#cbd5e1}#coding-grid .pixel-cell,#coding-grid .cell{background-color:#fff!important;border:none;box-sizing:border-box}#coding-grid .pixel-cell:hover,#coding-grid .cell:hover{background-color:#f1f5f9!important}.virtual-robot{width:20px;height:20px;position:absolute;top:0;left:0;display:flex!important;justify-content:center;align-items:center;font-size:16px;background:#ffffffe6;border:2px solid #10b981;border-radius:4px;transition:all .3s cubic-bezier(.175,.885,.32,1.275);z-index:100;pointer-events:none}body #app-header.compact-mode{padding:4px 16px!important;margin:0!important;height:40px!important}body #app-header.compact-mode .subtitle{display:none!important}body #app-header.compact-mode .main-title{font-size:1.1rem!important;margin:0!important}body #app.coding-layout{padding:0!important;gap:0!important;margin:0!important}body #app.coding-layout #mode-container,body #app.coding-layout .canvas-wrapper,body #app.coding-layout .axis{margin:0!important;padding:0!important}body #app.coding-layout .axis-top,body #app.coding-layout .axis-top-outer{height:20px!important;min-height:20px!important}body #app.coding-layout .middle-section{margin:0!important;padding:0!important}.play-btn{color:#4ade80!important;font-size:1.5rem}.code-block.executing{box-shadow:0 0 15px gold,inset 0 0 10px #fff;transform:scale(1.1);z-index:100;border-color:#fff}.code-block.block-repeat{width:auto;min-width:140px;height:auto;background-color:transparent!important;border:none;padding:0;display:flex;flex-direction:column;align-items:flex-start;box-shadow:none;margin-right:4px;flex-shrink:0}.repeat-header{height:36px;background-color:#f97316;color:#fff;display:flex;align-items:center;padding:0 8px;border-radius:8px 8px 0 0;gap:8px;width:100%;box-sizing:border-box;box-shadow:0 4px #0003,inset 0 1px #fff6,inset 0 -1px #0000001a!important}body #app.coding-layout .app-sidebar,body #app.coding-layout .sidebar-content{display:flex!important;width:260px}.repeat-header span{font-weight:700}.repeat-count-input{width:40px;padding:2px 4px;border:1px solid rgba(255,255,255,.3);background:#fff3;color:#fff;border-radius:4px;font-weight:700;text-align:center;font-size:14px}.repeat-count-input:focus{outline:none;background:#fff;color:#f97316}.repeat-body-container{display:flex;flex-direction:column;border-left:12px solid #f97316;border-right:2px solid transparent;background-color:#f973160d;width:100%;min-height:70px;box-sizing:border-box}.repeat-body{display:flex;flex-direction:row;align-items:center;padding:10px;gap:8px;flex-grow:1;width:100%;min-height:50px;overflow-x:auto;pointer-events:auto;position:relative;z-index:10;background-color:#f973161a}.repeat-footer{height:12px;width:100%;background-color:#f97316;border-radius:0 0 8px 8px}.repeat-body.drag-over{background-color:#f9731633;box-shadow:inset 0 0 0 2px #f97316}.hidden{display:none!important}li{list-style:none}.split-view{width:100%;display:flex;flex-direction:row;justify-content:center;align-items:center;gap:40px;flex-wrap:wrap}.palette-container{margin-top:10px!important;padding:10px!important}.canvas-wrapper{margin-bottom:0!important}@media screen and (max-height:800px){.canvas-wrapper{margin-bottom:-60px!important}}@media screen and (max-height:800px){.color-swatch{width:24px!important;height:24px!important;border-width:2px!important}.palette-row{gap:4px!important}.palette-container{padding:8px!important;gap:4px!important}}@media screen and (max-height:800px){.code-block{height:40px!important;min-width:40px!important;padding:0 4px!important;font-size:1.5rem!important}.code-block img{width:36px!important;height:36px!important}.block-start{height:40px!important;min-width:60px!important}}.help-box{width:90%;max-width:800px;max-height:85vh;display:flex;flex-direction:column;padding:0;overflow:hidden}.help-header{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;border-bottom:1px solid rgba(0,0,0,.1);background:#ffffff80}.help-header h3{margin:0;font-size:1.5rem;color:#333}.help-content{padding:20px;overflow-y:auto;line-height:1.6;color:#444}.help-content h4{margin-top:1.5rem;margin-bottom:.5rem;color:#2563eb;border-bottom:2px solid #e0e7ff;padding-bottom:4px}.help-content p{margin-bottom:1rem}.help-content ul{padding-left:20px;margin-bottom:1rem}.help-content li{list-style:disc;margin-bottom:.5rem}.help-content strong{color:#1e293b}.help-section{margin-bottom:30px}.help-img-placeholder{width:100%;height:200px;background:#f1f5f9;border:2px dashed #94a3b8;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#64748b;margin:10px 0}.help-content li{list-style:none!important;margin-bottom:.5rem}.help-tool-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:15px;margin-bottom:20px}.help-tool-item{display:flex;align-items:flex-start;gap:12px;background:#fff9;padding:12px;border-radius:8px;border:1px solid rgba(0,0,0,.08)}.help-tool-icon{font-size:1.5rem;background:#fff;width:40px;height:40px;display:flex;justify-content:center;align-items:center;border-radius:6px;flex-shrink:0;box-shadow:0 2px 4px #0000000d}.help-tool-desc strong{display:block;margin-bottom:4px;color:#0f172a}.delete-badge{position:absolute;top:-8px;right:-8px;width:24px;height:24px;background-color:#ef4444;color:#fff;border-radius:50%;display:flex;justify-content:center;align-items:center;font-size:14px;cursor:pointer;box-shadow:0 2px 4px #0003;z-index:100;border:2px solid white;animation:popIn .2s cubic-bezier(.175,.885,.32,1.275)}.delete-badge:hover{background-color:#dc2626;transform:scale(1.1)}@keyframes popIn{0%{transform:scale(0);opacity:0}to{transform:scale(1);opacity:1}}.tl4k-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:2000}.tl4k-modal{position:relative;background:var(--panel-bg);border-radius:16px;box-shadow:var(--glass-shadow);max-width:420px;width:90%;max-height:90vh;overflow:auto;padding:24px}.tl4k-modal-close{position:absolute;top:12px;right:12px;width:32px;height:32px;border:none;background:transparent;font-size:1.5rem;color:#64748b;cursor:pointer;line-height:1;border-radius:6px}.tl4k-modal-close:hover{background:#0000000f;color:var(--text-color)}.tl4k-join-card .tl4k-join-title{margin:0 0 8px;font-size:1.25rem;color:var(--text-color)}.tl4k-join-subtitle{margin:0 0 16px;font-size:.9rem;color:#64748b}.tl4k-pin-input{width:100%;padding:12px 16px;font-size:1.1rem;letter-spacing:.2em;border:2px solid #e2e8f0;border-radius:8px;margin-bottom:12px;box-sizing:border-box}.tl4k-pin-input:focus{outline:none;border-color:var(--accent-color)}.tl4k-join-error{color:var(--danger-color);font-size:.9rem;margin-bottom:12px}.tl4k-btn-primary{width:100%;padding:12px 20px;border:none;border-radius:8px;background:var(--accent-color);color:#fff;font-family:var(--font-main);font-size:1rem;font-weight:600;cursor:pointer}.tl4k-btn-primary:hover:not(:disabled){background:var(--accent-hover)}.tl4k-btn-primary:disabled{opacity:.7;cursor:not-allowed}.tl4k-btn-text{margin-top:12px;padding:8px 0;border:none;background:none;color:#64748b;font-size:.9rem;cursor:pointer}.tl4k-btn-text:hover{color:var(--accent-color)}.tl4k-class-list,.tl4k-avatar-list{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.tl4k-class-btn,.tl4k-avatar-btn{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border:2px solid #e2e8f0;border-radius:8px;background:#fff;cursor:pointer;text-align:left;font-family:var(--font-main)}.tl4k-class-btn:hover,.tl4k-avatar-btn:hover:not(:disabled){border-color:var(--accent-color);background:#6366f10f}.tl4k-step-indicator{display:flex;align-items:center;gap:4px;margin-bottom:16px;font-size:.85rem;color:#64748b}.tl4k-step.done{color:var(--success-color)}.tl4k-step.active{color:var(--accent-color);font-weight:600}.tl4k-join-empty{color:#64748b;font-size:.9rem;margin:0 0 12px}.tl4k-pending-card{text-align:center;padding:24px 0}.tl4k-pending-emoji{font-size:3rem;display:block;margin-bottom:12px}.tl4k-pending-title{font-size:1.25rem;font-weight:600;margin:0 0 8px}.tl4k-pending-msg{color:#64748b;font-size:.9rem;margin:0 0 16px}