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form{flex-direction:column;gap:20px;display:flex}.form-group label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;text-align:left;margin-bottom:6px;font-size:.85rem;font-weight:600;display:block}.form-group input,.form-group textarea,.form-group select{width:100%;color:var(--text-primary);box-sizing:border-box;background-color:#1a1a1e;border:1px solid #3f3f46;border-radius:12px;outline:none;padding:14px;font-size:1rem;transition:all .2s}.form-group textarea{resize:vertical;height:100px}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--accent-color);background-color:#202024;box-shadow:0 0 0 3px #76965633}.modal-actions{flex-direction:column;gap:12px;margin-top:12px;display:flex}.modal-actions button{cursor:pointer;border:none;border-radius:12px;width:100%;padding:14px;font-size:1rem;font-weight:700;transition:all .2s}.save-button{background-color:var(--accent-color);color:#fff;box-shadow:0 4px 12px 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a{color:var(--accent-color);font-weight:700;text-decoration:none;transition:color .2s}.support-footer a:hover{color:var(--accent-hover);text-decoration:underline}@media (width<=900px){.explainer-section{grid-template-columns:1fr;gap:32px}.explainer-example{order:-1}.static-board{margin:0;transform:scale(.95)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.puzzle-info{border-left:4px solid var(--accent-color);box-sizing:border-box;background:#7696561a;border-radius:4px 12px 12px 4px;width:100%;max-width:536px;padding:12px 16px}.puzzle-info.minimized{padding-top:12px;padding-bottom:12px}.puzzle-info-header{justify-content:space-between;align-items:center;gap:16px;display:flex}.puzzle-info-header h2{margin:0}.minimize-toggle{color:var(--text-secondary);cursor:pointer;background:0 0;border:1px solid #3f3f46;border-radius:8px;padding:6px 12px;font-size:.9rem;transition:all .2s}.minimize-toggle:hover{border-color:var(--accent-color);color:var(--text-primary)}.solving-hint{color:var(--accent-color);margin-top:6px;font-weight:600}.puzzle-info p{margin:8px 0 0}.creator-settings{background:var(--card-bg);box-sizing:border-box;border:1px solid #3f3f46;border-radius:16px;width:100%;max-width:536px;padding:14px 16px}.creator-settings label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;text-align:left;margin-bottom:8px;font-size:.85rem;font-weight:600;display:block}.creator-settings select{width:100%;color:var(--text-primary);box-sizing:border-box;background-color:#1a1a1e;border:1px solid #3f3f46;border-radius:12px;outline:none;padding:14px;font-size:1rem}.creator-settings select:focus{border-color:var(--accent-color);background-color:#202024;box-shadow:0 0 0 3px #76965633}.creator-settings-hint{color:var(--accent-color);text-align:left;margin:10px 0 0;font-size:.92rem;line-height:1.4}@media (width<=600px){:root{--square-size:clamp(40px, calc((100vw - 28px) / 8), 50px)}#root{box-shadow:none;border-left:none;border-right:none;padding:10px 8px 14px}.app-container{gap:10px}h1{padding-top:0;font-size:1.8rem}.app-description{display:none}.main-nav{margin-bottom:6px}.desktop-nav{display:none}.mobile-nav{box-sizing:border-box;padding:0;display:block}.mobile-nav-select{min-height:48px;padding:11px 44px 11px 12px;font-size:1rem}.puzzle-info{max-width:calc(var(--board-size) + 18px);padding:8px 10px}.puzzle-info-header h2{font-size:1.1rem}.puzzle-info-header{gap:10px}.puzzle-header{min-width:0}.puzzle-header.daily-active-header{gap:10px}.puzzle-header.daily-active-header .star-rating{font-size:.95rem}.rating-value{margin-left:4px}.rating-count{margin-left:2px}.minimize-toggle{min-width:50px;padding:4px 8px;font-size:.8rem}.daily-header{box-sizing:border-box;flex-direction:row;align-items:center;margin-bottom:16px;padding:0 16px}.daily-header h2{font-size:1.4rem}.streak-badge{padding:4px 10px;font-size:.8rem}.library-header{flex-direction:column;align-items:stretch;gap:12px;padding:0 16px}.library-sort{justify-content:space-between;width:100%}.library-sort select{flex:1;margin-left:12px}.puzzle-grid{grid-template-columns:1fr;gap:16px;padding:10px 0}.daily-challenge-card{margin:0}.puzzle-card{padding:16px}.board-wrapper{max-width:calc(var(--board-size) + 40px);box-sizing:border-box;border-radius:10px;width:fit-content;padding:8px}.board-outer{gap:4px}.ranks-labels{padding-bottom:20px}.rank-label{width:12px;font-size:.65rem}.files-labels{height:20px}.file-label{font-size:.65rem}.tray{width:calc(var(--board-size) + 32px);border-radius:10px;gap:8px;max-width:100%;min-height:58px;margin:0 auto;padding:8px}.tray .piece{width:calc(var(--square-size) * .78);height:calc(var(--square-size) * .78)}.square.tap-destination:after{border-width:3px;inset:4px}.square.selected-square{box-shadow:inset 0 0 0 3px #f59e0bf2}.main-nav{flex-wrap:wrap;justify-content:center;gap:8px;padding:0}.main-nav button{flex:auto;min-width:80px;padding:8px 12px;font-size:.85rem}.controls{width:calc(var(--board-size) + 32px);box-sizing:border-box;flex-direction:column;gap:10px;max-width:100%;padding:0}.controls button{width:100%;min-height:46px}}@media (height<=860px) and (width>=601px){:root{--square-size:clamp(42px, min(calc((100vw - 72px) / 8), calc((100vh - 300px) / 8)), 58px)}#root{padding-top:12px;padding-bottom:12px}.app-container{gap:12px}.main-nav button{padding:7px 14px;font-size:.86rem}.tray,.puzzle-info{padding:10px 14px}.library-header{flex-direction:column;align-items:stretch}.library-sort{justify-content:space-between}}.toast-container{z-index:9999;pointer-events:none;flex-direction:column;gap:12px;display:flex;position:fixed;top:24px;right:24px}.toast{pointer-events:auto;background:var(--card-bg);color:var(--text-primary);border:1px solid #3f3f46;border-left-width:4px;border-radius:12px;align-items:center;min-width:200px;max-width:350px;padding:12px 20px;font-size:.9rem;font-weight:600;animation:.3s cubic-bezier(.175,.885,.32,1.275) slideInRight;display:flex;box-shadow:0 10px 15px -3px #0006,0 4px 6px -2px #0000000d}.toast.success{border-left-color:var(--accent-color)}.toast.error{border-left-color:#ef4444}.toast.info{border-left-color:#4285f4}.puzzle-card.completed{background:linear-gradient(to bottom right, var(--card-bg), #7696560d);border-color:#76965666}.load-more-container{justify-content:center;margin-top:40px;margin-bottom:40px;display:flex}.load-more-button{color:#fff;cursor:pointer;background:#3f3f46;border:1px solid #52525b;border-radius:12px;padding:12px 32px;font-size:1rem;font-weight:700;transition:all .2s}.load-more-button:hover:not(:disabled){border-color:var(--accent-color);background:#52525b;transform:translateY(-2px)}.load-more-button:disabled{opacity:.5;cursor:not-allowed}.completion-badge{vertical-align:middle;font-size:1rem}@keyframes slideInRight{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}