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0}.game-nav::-webkit-scrollbar{height:6px}.game-nav::-webkit-scrollbar-track{background:#ecf0f1;border-radius:3px}.game-nav::-webkit-scrollbar-thumb{background:#bdc3c7;border-radius:3px}.game-nav::-webkit-scrollbar-thumb:hover{background:#95a5a6}.game-nav-link{padding:.625rem 1.25rem;background-color:#fff;color:#2c3e50;text-decoration:none;border-radius:4px;box-shadow:0 2px 4px #0000001a;transition:all .2s;font-size:.875rem;font-weight:500;white-space:nowrap}.game-nav-link:hover{background-color:#3498db;color:#fff}.game-nav-link.active{background-color:#2c3e50;color:#fff}.game-nav-container{padding:2rem 2rem 0}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;background-color:#ecf0f1}.loading-spinner{width:40px;height:40px;border:4px solid #bdc3c7;border-top:4px solid #3498db;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:1rem}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-text{font-size:1.5rem;color:#7f8c8d;text-align:center}.game-content{opacity:0;animation:fadeIn .5s ease-in-out forwards;display:flex;flex-direction:column;align-items:center;gap:1.25rem;container-type:inline-size}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.game-info{text-align:center;background-color:#fff;padding:.8rem 1rem;border-radius:4px;border:2px solid #34495e;min-width:400px;max-width:calc(100% - 10px);box-sizing:border-box}.game-info.ended{border-color:#f39c12;animation:pulse-orange 1.5s infinite}.game-info-message{margin:0;font-size:1rem;font-weight:700;color:#2c3e50}@keyframes pulse-orange{0%{box-shadow:0 0 #e67e22b3}70%{box-shadow:0 0 0 8px #e67e2200}to{box-shadow:0 0 #e67e2200}}.controls{display:flex;gap:1rem;justify-content:center}.btn{padding:.75rem 1.5rem;border:none;border-radius:4px;cursor:pointer;font-size:1rem;transition:background-color .2s;-webkit-user-select:none;user-select:none}.btn-primary{background-color:#3498db;color:#fff}.btn-primary:hover{background-color:#2980b9}.btn-secondary{background-color:#95a5a6;color:#fff}.btn-secondary:hover{background-color:#7f8c8d}.btn-success{background-color:#27ae60;color:#fff}.btn-success:hover{background-color:#229954}.btn-info{background-color:#17a2b8;color:#fff}.btn-info:hover{background-color:#138496}.btn-warning{background-color:#f39c12;color:#fff}.btn-warning:hover{background-color:#e67e22}.btn-danger{background-color:#e74c3c;color:#fff}.btn-danger:hover{background-color:#c0392b}.modal-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.modal{background-color:#fff;border-radius:8px;padding:2rem;max-width:400px;width:90%;text-align:center;box-shadow:0 4px 6px #0000001a}.modal h3{margin-top:0;color:#2c3e50}.modal-buttons{display:flex;gap:1rem;justify-content:center;margin-top:1.5rem}.modal-content{background-color:#fff;padding:2rem;border-radius:8px;box-shadow:0 4px 6px #0000001a;max-height:90vh;overflow-y:auto}.new-game-dialog{width:300px;max-width:90vw}.new-game-dialog h2{margin:0 0 1.5rem;font-size:1.5rem;color:#2c3e50;text-align:center}.setting-groups{margin-bottom:3rem}.setting-group{margin-bottom:2rem}.setting-heading{display:block;font-weight:700;margin-bottom:.8rem;color:#2c3e50;font-size:1rem}.radio-group{display:flex;flex-direction:row;gap:2rem;flex-wrap:wrap}.radio-group label{display:flex;align-items:center;font-weight:400;cursor:pointer;border-radius:4px;white-space:nowrap}.radio-group input[type=radio]{margin:.1rem .5rem 0 0;cursor:pointer}.cpu-controls{display:flex;gap:1.5rem;align-items:flex-end;flex-wrap:wrap}.control-group{display:flex;flex-direction:column;gap:.5rem;flex-grow:1}.control-label{font-size:.875rem;font-weight:500;color:#555;margin:0}.cpu-level-select,.cpu-timeout-select,.initial-setup-select{padding:.5rem;border:1px solid #ddd;border-radius:4px;font-size:.875rem;background-color:#fff;font-family:inherit;width:100%}.cpu-level-select:focus,.cpu-timeout-select:focus{outline:none;border-color:#3498db;box-shadow:0 0 0 2px #3498db33}.cpu-level-select:disabled,.cpu-timeout-select:disabled{background-color:#f8f9fa;color:#6c757d;cursor:not-allowed}.setting-group.disabled .setting-heading,.setting-group.disabled .control-label,.setting-group.disabled .radio-group{color:#6c757d!important}.board-container{display:flex;flex-direction:column;align-items:center;gap:.25rem}.home-container{max-width:1024px;margin:0 auto;line-height:1.5}.home-description{font-size:1.125rem;color:#2c3e50;margin:2rem 0 3rem;line-height:1.6}.category-section{margin-bottom:3rem}.category-title{font-size:1.5rem;color:#2c3e50;margin:0 0 1rem;padding-left:.5rem}.games-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}.game-card{background-color:#fff;border-radius:2px;padding:1.5rem;box-shadow:0 2px 4px #0000001a;transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column}.game-title{font-size:1.25rem;color:#2c3e50;margin:0 0 1rem}.game-description{color:#7f8c8d;line-height:1.6;margin:0 0 1.5rem;flex:1}.game-actions{display:flex;gap:.75rem}.game-actions .btn{flex:1;text-align:center;text-decoration:none;display:inline-block}.guide-container{max-width:900px;margin:0 auto;line-height:1.8;background-color:#fff;border-radius:2px;box-shadow:0 2px 4px #0000001a}.guide-section{padding:2rem 2rem 0}.guide-section:last-child{padding:2rem 2rem 4rem}.guide-section-title{font-size:1.5rem;color:#2c3e50;margin:0 0 1.5rem}.guide-text{color:#34495e;margin:0 0 1.5rem}.guide-image-section{line-height:0;margin:0 0 1.5rem}.guide-image{width:100%;height:auto;max-width:500px}.guide-image.MiniShogi,.guide-image.JudkinsShogi{max-width:300px}.guide-image.ToriShogi{max-width:400px}.guide-text:last-child{margin-bottom:0}.guide-actions{margin:2rem 0px 1rem}.guide-actions a{text-decoration:none}.guide-link{color:#3498db;text-decoration:none;font-weight:500;transition:color .2s}.guide-link:hover{color:#2980b9;text-decoration:underline}.guide-list{margin:0;padding-left:1.5rem;color:#34495e}.guide-list li{margin-bottom:.75rem}.guide-list li:last-child{margin-bottom:0}.guide-definition-list{margin:0;padding:0}.guide-definition-list dt{font-weight:700;margin:0;padding:0}.guide-definition-list dd{margin:0;padding:0 0 .8em}.guide-definition-list dd:last-child{padding:0}.guide-strong{font-weight:700}@media(max-width:620px){.app-header{padding:.75rem 1rem}.app-header h1{font-size:1.5rem}.app-footer p{font-size:.75rem}.content-section{padding:2rem 1.25rem}.home-description{font-size:1rem;margin:0 0 2rem}.category-title{font-size:1.5rem}.games-grid{grid-template-columns:1fr;gap:1rem}.game-card{padding:1.25rem}.game-title{font-size:1.25rem}.guide-container{gap:1.5rem}.guide-section-title{font-size:1.25rem}.guide-list{padding-left:1.25rem}.game-page{padding:0 0 2rem}.game-nav{gap:.5rem;margin-bottom:1.5rem;justify-content:flex-start}.game-nav-link{padding:.5rem 1rem;font-size:.8rem;flex-shrink:0}.game-nav-container{padding:2rem 1.25rem 0}.game-info{width:calc(100% - 40px);min-width:auto;max-width:400px}.game-info-message{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.controls{gap:.5rem;width:calc(100% - 10px)}.modal{width:95%;max-width:280px;padding:1.5rem}.new-game-dialog{width:280px;max-width:95vw}.radio-group{gap:1rem}}