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#0000004d}.app.dark-mode header h1{color:#e0e0e0}.app.dark-mode .nav-link{color:#a0aec0}.app.dark-mode .nav-link:hover{background:#667eea33;color:#9ca3ff}.app.dark-mode .nav-link.active{background:#667eea40;color:#9ca3ff}.app.dark-mode .dark-mode-toggle{background:#2d3748;border-color:#4a5568}.app.dark-mode .dark-mode-toggle svg{color:#f7fafc}.app.dark-mode .language-selector{background:#2d3748;border-color:#4a5568;color:#e0e0e0}.app.dark-mode .language-selector:hover{background:#363646}.app.dark-mode .theme-selector button{background:#2d3748;border-color:#4a5568;color:#e0e0e0}.app.dark-mode .theme-selector button:hover{background:#363646}.app.dark-mode .theme-selector button.active{background:linear-gradient(135deg,#667eea,#764ba2);border-color:transparent;color:#fff}.app.dark-mode .editor,.app.dark-mode .preview-container{background:#1e1e2e;box-shadow:0 10px 40px #0000004d}.app.dark-mode .theme-selector{background:#252535;border-bottom:1px solid #3a3a4a}.app.dark-mode .theme-selector label{color:#e0e0e0}.app.dark-mode .theme-selector select,.app.dark-mode .sample-button{background:#2d3748;border-color:#4a5568;color:#e0e0e0}.app.dark-mode .sample-button:hover{background:#363646;border-color:#667eea}.app.dark-mode .sample-button svg{color:#667eea}.app.dark-mode .sample-grid{background:transparent}.app.dark-mode .sample-selector{background:#1e1e2e}.app.dark-mode .selectors-container{background:transparent;border-bottom-color:#4a5568}.app.dark-mode .sample-toggle-btn{color:#94a3b8}.app.dark-mode .sample-toggle-btn:hover{color:#cbd5e1}.app.dark-mode .size-input input{background:#2d3748;border-color:#4a5568;color:#e0e0e0}.app.dark-mode .editor textarea{background:#252535;color:#e0e0e0;border-top:1px solid #3a3a4a}.app.dark-mode .editor textarea:focus{background:#2d3748}.app.dark-mode .preview{background:#252535}.app.dark-mode .controls,.app.dark-mode .embed-container{background:#1e1e2e;border-top:1px solid #3a3a4a}.app.dark-mode .embed-container{background:#252535}.app.dark-mode .embed-header label{color:#e0e0e0}.app.dark-mode .embed-container textarea{background:#2d3748;border-color:#4a5568;color:#e0e0e0}.app.dark-mode .embed-container textarea:focus{background:#363646;border-color:#667eea}.app.dark-mode .resize-handle:before{background:#4a5568}.app.dark-mode .resize-handle:hover:before,.app.dark-mode .resize-handle.dragging:before{background:linear-gradient(135deg,#667eea,#764ba2)}@media(max-width:768px){main{flex-direction:column;padding:8px;gap:8px}.resize-handle{display:none}.editor,.preview-container{flex:none;width:100%;min-height:400px}.editor{max-height:none;height:400px}.preview-container{height:50vh}header h1{font-size:16px}header{padding:10px 12px}.header-controls{gap:8px}.language-selector{font-size:12px;padding:6px 8px}.dark-mode-toggle{width:44px;height:44px}.sample-grid{grid-template-columns:repeat(auto-fill,minmax(90px,1fr));gap:6px}.sample-button{padding:6px 8px;font-size:11px;gap:4px}.sample-button svg{width:14px;height:14px}.theme-selector{flex-wrap:wrap;gap:4px;padding:8px}.theme-selector button{font-size:11px;padding:6px 10px}.controls{flex-wrap:wrap;gap:8px;padding:8px}.size-input{font-size:11px}.size-input input{width:70px;padding:6px;font-size:12px}.size-input input[type=color]{width:50px;height:28px}.dropdown-toggle,.controls>button{font-size:11px;padding:8px 12px;min-height:32px}.dropdown-menu{min-width:100px}.dropdown-menu button{font-size:11px;padding:8px 12px}.zoom-controls{right:8px;bottom:8px;gap:6px}.zoom-controls button{width:44px;height:44px;font-size:16px}footer{padding:12px;font-size:10px;flex-direction:column;gap:8px;text-align:center}}footer{padding:12px 24px;background:#fffffffa;box-shadow:0 -2px 20px #0000001a;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:#4a5568;position:relative;z-index:5}footer a{color:#667eea;text-decoration:none;font-weight:500}.loading-overlay{position:absolute;inset:0;background:#f8fafce6;display:flex;align-items:center;justify-content:center;z-index:100}.spinner{width:50px;height:50px;border:4px solid #e2e8f0;border-top-color:#667eea;border-radius:50%;animation:spin .8s linear infinite}.app.dark-mode .loading-overlay{background:#252535e6}.app.dark-mode .spinner{border-color:#4a5568;border-top-color:#667eea}.gallery-container{width:100%;min-height:100vh;padding:2rem;background:linear-gradient(135deg,#667eea,#764ba2);overflow-y:auto}.gallery-header{text-align:center;margin-bottom:3rem;padding:2rem 1rem}.gallery-header h1{font-size:2.5rem;font-weight:700;color:var(--text-color);margin-bottom:.5rem}.gallery-subtitle{font-size:1.2rem;color:var(--text-secondary);font-weight:400}.gallery-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(500px,1fr));gap:2rem;max-width:1400px;margin:0 auto}.gallery-card{background:var(--card-bg);border:1px solid var(--border-color);border-radius:12px;overflow:hidden;box-shadow:0 2px 8px #0000001a;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;cursor:pointer;display:flex;flex-direction:column;height:550px}.gallery-card:hover{transform:translateY(-4px);box-shadow:0 4px 16px #00000026;border-color:#667eea}.gallery-card:active{transform:translateY(-2px)}.card-header{padding:1.5rem;background:var(--header-bg);border-bottom:1px solid var(--border-color);flex-shrink:0}.card-header h2{font-size:1.5rem;font-weight:600;color:var(--text-color);margin:0 0 .5rem}.card-description{font-size:.95rem;color:var(--text-secondary);margin:0;line-height:1.5}.card-diagram{padding:2rem;background:var(--diagram-bg);flex:1;display:flex;align-items:center;justify-content:center;overflow:auto}.card-diagram svg{max-width:100%;height:auto;display:block}.card-footer{padding:1rem 1.5rem;background:var(--header-bg);border-top:1px solid var(--border-color);display:flex;justify-content:center;align-items:center;flex-shrink:0}.import-button{display:flex;align-items:center;gap:.5rem;padding:.5rem 1rem;background:transparent;border:none;color:var(--primary-color);font-size:.9rem;font-weight:500;cursor:pointer;transition:opacity .2s ease;pointer-events:none}.import-button svg{flex-shrink:0}.gallery-card:hover .import-button{opacity:1}.loading-spinner{display:flex;flex-direction:column;align-items:center;gap:1rem;color:var(--text-secondary)}.spinner{width:40px;height:40px;border:4px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error{color:#e74c3c;padding:1rem;text-align:center}body.dark-mode .gallery-container{background:linear-gradient(135deg,#1a1a2e,#16213e);--text-color: #ffffff;--text-secondary: #b0b0b0;--card-bg: #2a2a2a;--header-bg: #333333;--border-color: #404040;--diagram-bg: #222222;--primary-color: #4a90e2}body:not(.dark-mode) .gallery-container{--text-color: #333333;--text-secondary: #666666;--card-bg: #faf9ff;--header-bg: #f3f2ff;--border-color: #e8e6f5;--diagram-bg: #ffffff;--primary-color: #4a90e2}@media(max-width:768px){.gallery-container{padding:1rem}.gallery-header{margin-bottom:2rem;padding:1rem .5rem}.gallery-header h1{font-size:2rem}.gallery-subtitle{font-size:1rem}.gallery-grid{grid-template-columns:1fr;gap:1.5rem}.gallery-card{height:500px}.card-diagram{padding:1rem}}@media(max-width:480px){.gallery-header h1{font-size:1.5rem}.gallery-subtitle{font-size:.9rem}.card-header{padding:1rem}.card-header h2{font-size:1.25rem}.card-description{font-size:.875rem}}