:root{--bg-color: #2c3e50;--surface-color: #34495e;--primary-color: #3498db;--primary-hover: #2980b9;--secondary-color: #e67e22;--text-color: #ecf0f1;--border-color: #22303F;--invalid-color: #e74c3c;--correct-color: #2ecc71;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--white-gem: #ffffff;--yellow-gem: #f1c40f;--red-gem: #e74c3c;--blue-gem: #3498db;--transparent-gem-stroke: #bdc3c7;--black-gem: #2c3a47}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-color);overscroll-behavior:none;-webkit-font-smoothing:antialiased}#app{position:relative;display:flex;flex-direction:column;height:100vh;max-height:100vh;max-width:550px;margin:0 auto;background-color:var(--surface-color);box-shadow:0 0 20px #00000080;overflow:hidden}.screen{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;flex-direction:column;align-items:center;padding:1.5rem;background:url(https://www.transparenttextures.com/patterns/low-contrast-linen.png),var(--bg-color);opacity:1;transform:scale(1);transition:opacity .3s ease-in-out,transform .3s ease-in-out}#screen-main,#screen-custom-creator{overflow-y:auto}.screen.hidden{visibility:hidden;opacity:0;transform:scale(.95);pointer-events:none}.screen-v-center{justify-content:center}.screen-content{text-align:center;width:100%;display:flex;flex-direction:column;align-items:center;gap:1rem}#lang-switcher{position:absolute;top:15px;right:15px;cursor:pointer;background-color:#0003;border-radius:8px;width:50px;height:50px;display:flex;align-items:center;justify-content:center;transition:background-color .2s ease;-webkit-tap-highlight-color:transparent}#lang-switcher:hover{background-color:#0006}#lang-switcher svg{width:32px;height:auto;display:block}.title{font-size:3rem;font-weight:300;letter-spacing:2px;margin-bottom:.5rem;margin-top:1rem;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.subtitle-group{text-align:center;margin-bottom:2rem;margin-top:-1rem}.byline,.based-on{font-size:.9rem;color:#ffffffb3;line-height:1.4;font-weight:300}.byline{margin-bottom:.1rem}.based-on a{color:inherit;text-decoration:underline;text-decoration-color:var(--primary-color);transition:color .2s ease,text-decoration-color .2s ease}.based-on a:hover{color:var(--primary-hover);text-decoration-color:var(--primary-hover)}.version-info{width:100%;text-align:center;margin-top:1.5rem;padding-bottom:1rem;font-size:.75rem;color:#ecf0f1b3;text-shadow:0 1px 3px rgba(0,0,0,.6);pointer-events:none}.subtitle{font-size:2rem;font-weight:400;margin-bottom:0}.menu-buttons button{background-color:var(--primary-color);color:var(--text-color);border:none;border-radius:8px;padding:.8rem 1.5rem;font-size:1.2rem;font-weight:500;cursor:pointer;transition:all .2s ease;margin:.5rem;min-width:200px;box-shadow:0 4px 6px #0003;-webkit-tap-highlight-color:transparent;text-align:center}.menu-buttons button:hover{background-color:var(--primary-hover);transform:translateY(-2px);box-shadow:0 6px 8px #00000040}.menu-buttons button:disabled{background-color:#7f8c8d;border-color:#95a5a6;color:#bdc3c7;cursor:not-allowed;transform:none;box-shadow:0 2px 3px #00000026}.menu-buttons.vertical{display:flex;flex-direction:column;align-items:center}.menu-buttons .btn-back{margin-top:2rem;background-color:transparent;border:2px solid var(--primary-color);color:var(--primary-color);box-shadow:none;padding:calc(.8rem - 2px) calc(1.5rem - 2px)}.menu-buttons .btn-back:hover{background-color:var(--primary-hover);color:var(--text-color);border-color:var(--primary-hover)}#screen-difficulty .subtitle{margin-top:1rem;margin-bottom:2rem}#screen-difficulty>.screen-content{flex-grow:1}#screen-difficulty>.menu-buttons{padding-top:1rem;text-align:center}#screen-difficulty>.menu-buttons .btn-back{margin-top:0}#difficulty-options .difficulty-desc{font-size:.9rem;font-weight:300;margin-top:.25rem;color:#ffffffb3;max-width:300px;margin-left:auto;margin-right:auto}#intro-rules{margin-top:2rem;padding:1rem .8rem;background-color:#0003;border:1px solid var(--border-color);border-radius:8px;max-width:500px;width:100%;text-align:left}#intro-rules p,#intro-rules ul{line-height:1.6;font-size:.95rem}#intro-rules ul{padding-left:1.2rem;margin:.5rem 0}#intro-rules ul li ul{margin-top:.5rem;margin-bottom:.5rem;padding-left:1rem}#intro-rules strong{color:var(--primary-color)}#intro-rules h3{margin-top:.5rem;margin-bottom:.25rem;font-weight:600}#intro-rules h4{margin-top:1rem;margin-bottom:.5rem;border-bottom:1px solid var(--border-color);padding-bottom:.25rem;font-weight:600}.rules-details{margin-top:1rem;border:1px solid var(--border-color);border-radius:6px;transition:background-color .2s ease}#intro-rules>.rules-details:first-child{margin-top:0;border:none}.rules-summary{cursor:pointer;list-style:none;padding:.75rem 0;position:relative;font-weight:600}.rules-summary:hover{background-color:#ffffff0d}.rules-summary::-webkit-details-marker{display:none}.rules-summary h3{display:inline-block;margin:0;border:none;padding:0;font-weight:600;font-size:1.15rem}.rules-summary h4{display:inline-block;margin:0;border:none;padding:0;font-weight:600;font-size:1rem}.rules-summary:after{content:"▶";position:absolute;right:.25rem;top:50%;transform:translateY(-50%) rotate(0);transition:transform .2s ease-in-out;font-size:.8em;color:var(--primary-color)}.rules-details[open]>.rules-summary:after{transform:translateY(-50%) rotate(90deg)}.rules-details .details-content{padding:0 0 1rem;border-top:1px solid var(--border-color);animation:fadeInDetails .3s ease-out}@keyframes fadeInDetails{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.details-content p{line-height:1.6;margin-bottom:.5rem}.custom-creator-layout{width:100%;flex-grow:1}.custom-creator-layout h4{color:var(--primary-color);border-bottom:1px solid var(--border-color);padding-bottom:.5rem;margin-bottom:.5rem;text-align:left;font-weight:500}.creator-main-content{display:flex;flex-direction:column;gap:1.5rem;width:100%;margin:1rem 0}.creator-config,.creator-preview{background:var(--surface-color);padding:1rem;border-radius:8px;border:1px solid var(--border-color)}.selector-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(60px,1fr));gap:.75rem;margin-bottom:1rem}.color-choice{width:100%;aspect-ratio:1/1;border-radius:6px;cursor:pointer;border:2px solid transparent;transition:all .2s ease;-webkit-tap-highlight-color:transparent}.color-choice:hover{transform:scale(1.05)}.color-choice.selected{border-color:var(--secondary-color);box-shadow:0 0 10px var(--secondary-color)}.shape-choice{width:100%;aspect-ratio:1/1;border-radius:6px;cursor:pointer;border:2px solid var(--border-color);background-color:var(--bg-color);transition:all .2s ease;padding:4px;-webkit-tap-highlight-color:transparent}.shape-choice canvas{width:100%;height:100%;pointer-events:none}.shape-choice:hover{transform:scale(1.05);background-color:#4a627a}.shape-choice.selected{border-color:var(--secondary-color);background-color:#526f8c;box-shadow:0 0 10px var(--secondary-color)}.shape-choice-add{border-style:dashed;border-color:var(--primary-color)}.shape-choice-add:hover{border-style:solid;border-color:var(--primary-hover)}.shape-choice-add.selected{border-style:solid}.add-gem-button{width:100%;padding:.8rem;font-size:1.1rem;margin-top:1rem;background:var(--primary-color);color:#fff;border:none;border-radius:6px;cursor:pointer;transition:all .2s}.add-gem-button:hover{background:var(--primary-hover)}#custom-gem-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(70px,1fr));gap:.75rem;min-height:80px;align-content:flex-start;padding-bottom:1rem}.custom-gem-item{position:relative;border:1px solid var(--border-color);border-radius:4px;padding:4px;background:var(--bg-color);animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}.custom-gem-item canvas{width:100%;height:100%}.delete-gem-btn{position:absolute;top:-8px;right:-8px;width:22px;height:22px;background:var(--invalid-color);color:#fff;border:1px solid var(--text-color);border-radius:50%;cursor:pointer;font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;line-height:1;padding:0;-webkit-tap-highlight-color:transparent}.delete-gem-btn:hover{background:#c0392b}#custom-validation-feedback{margin-top:1rem;padding:.6rem;background-color:#0003;border:1px solid var(--border-color);border-radius:6px;text-align:center;font-size:.9rem;line-height:1.4;min-height:38px;display:flex;align-items:center;justify-content:center}#custom-validation-feedback div{margin-bottom:0}#custom-validation-feedback .valid{color:var(--correct-color)}#custom-validation-feedback .invalid{color:var(--invalid-color)}#custom-validation-feedback strong{font-weight:600}#screen-game{padding:0;background:var(--surface-color);justify-content:flex-start;overflow:hidden}#game-container{flex-grow:1;width:100%;display:flex;align-items:center;justify-content:center;position:relative;padding:1rem;overflow-y:auto;min-height:350px}#game-board-wrapper{position:relative;width:100%;aspect-ratio:10 / 12;max-width:450px;margin:auto}#gem-canvas,#path-overlay{position:absolute;top:0;left:0;width:100%;height:100%}#gem-canvas{z-index:1}#gem-canvas:focus-visible{outline:2px solid var(--primary-color);outline-offset:2px;border-radius:2px}#path-overlay{z-index:100;pointer-events:none}#screen-end{justify-content:flex-start;overflow:hidden}.end-content-container{display:flex;flex-direction:column;align-items:center;gap:.5rem;width:100%;flex-grow:1;overflow:auto;min-height:0;padding:0 .5rem}#end-title.win{color:var(--correct-color)}#end-title.loss{color:var(--invalid-color)}#end-rating{font-size:1.4rem;font-weight:500;color:var(--secondary-color);margin:.25rem 0;text-align:center}#end-stats{margin-bottom:.5rem}#end-solution-wrapper{border:2px solid var(--bg-color);padding:5px;margin:.5rem 0;display:flex;flex-direction:column}#end-solution-wrapper>p{font-size:.9rem;margin-bottom:5px;flex-shrink:0}#end-solution-canvas{min-height:0;image-rendering:-moz-crisp-edges;image-rendering:-webkit-crisp-edges;image-rendering:pixelated;image-rendering:crisp-edges}#end-rating-legend{font-size:.75rem;color:#ffffffb3;background-color:#0003;border:1px solid var(--border-color);border-radius:6px;padding:.75rem;margin-top:1rem;width:100%;max-width:450px;text-align:left}#end-rating-legend h5{margin:0 0 .5rem;font-weight:600;color:var(--text-color);font-size:.9rem;border-bottom:1px solid var(--border-color);padding-bottom:.25rem}#end-rating-legend ul{list-style:none;padding:0;margin:0}#end-rating-legend li{padding:.2rem 0;line-height:1.4}#end-rating-legend li strong{color:var(--secondary-color);font-weight:600}#screen-end .menu-buttons{flex-shrink:0;padding-top:1rem;text-align:center}#controls-container{width:100%;z-index:200;flex-shrink:0;background-color:var(--bg-color);border-top:1px solid var(--border-color);padding-bottom:env(safe-area-inset-bottom)}#tab-buttons{display:flex}.tab-btn{flex-grow:1;padding:.8rem;background:var(--surface-color);color:var(--text-color);border:none;border-bottom:1px solid var(--border-color);border-top:1px solid var(--border-color);cursor:pointer;font-size:1rem;transition:background-color .2s,color .2s;-webkit-tap-highlight-color:transparent;border-right:1px solid var(--bg-color)}#tab-buttons .tab-btn:last-child{border-right:none}.tab-btn.active{background:var(--bg-color);font-weight:700;border-bottom-color:var(--bg-color)}.tab-panel{display:none;padding:1rem}.tab-panel.active{display:block;background:var(--bg-color)}#actions-panel.active{display:flex;flex-direction:column;gap:1rem}#gem-toolbar{display:flex;gap:.5rem;flex-wrap:wrap;align-items:center}.toolbar-gem{width:50px;height:50px;cursor:grab;transition:transform .2s,opacity .2s;-webkit-tap-highlight-color:transparent;border:1px solid var(--border-color);border-radius:4px;padding:2px;display:flex;align-items:center;justify-content:center}.toolbar-gem.placed{opacity:.4;cursor:not-allowed}.toolbar-gem.dragging{opacity:.4}.toolbar-gem:not(.placed):hover{transform:scale(1.1)}.toolbar-gem-canvas{width:100%;height:100%}.mode-switch-wrapper{display:flex;align-items:center;gap:1rem}.mode-switch-wrapper>span{font-size:.9rem;font-weight:500}#mode-switch-container{display:flex;border:1px solid var(--border-color);border-radius:6px;overflow:hidden}.mode-btn{flex-grow:1;padding:.5rem .8rem;font-size:.9rem;background-color:var(--surface-color);color:var(--text-color);border:none;cursor:pointer;transition:all .2s;-webkit-tap-highlight-color:transparent}.mode-btn:not(:last-child){border-right:1px solid var(--border-color)}.mode-btn:hover:not(.active){background-color:var(--bg-color)}.mode-btn.active{background-color:var(--primary-color);color:#fff;font-weight:700}#action-buttons{display:flex;gap:1rem}#action-buttons button{flex-grow:1;padding:.8rem;font-size:1rem;border-radius:5px;border:1px solid var(--primary-color);background-color:var(--primary-color);color:#fff;cursor:pointer;transition:all .2s;-webkit-tap-highlight-color:transparent}#action-buttons button#give-up-btn{background-color:var(--invalid-color);border-color:var(--invalid-color)}#action-buttons button:hover{background-color:var(--primary-hover)}#action-buttons button#give-up-btn:hover{background-color:#c0392b}#action-buttons button:disabled{background-color:#7f8c8d;border-color:#95a5a6;color:#bdc3c7;cursor:not-allowed}.preview-toggle-wrapper{display:flex;align-items:center;justify-content:space-between;gap:1rem;-webkit-tap-highlight-color:transparent}.preview-toggle-wrapper label{cursor:pointer;font-size:.9rem;color:var(--text-color)}.preview-toggle-wrapper input[type=checkbox]{-moz-appearance:none;appearance:none;-webkit-appearance:none;position:relative;flex-shrink:0;width:44px;height:24px;background-color:var(--surface-color);border:1px solid var(--border-color);border-radius:12px;cursor:pointer;transition:background-color .2s ease}.preview-toggle-wrapper input[type=checkbox]:after{content:"";position:absolute;top:1px;left:1px;width:20px;height:20px;background-color:var(--text-color);border-radius:50%;transition:transform .2s ease;box-shadow:0 1px 2px #0003}.preview-toggle-wrapper input[type=checkbox]:checked{background-color:var(--primary-color);border-color:var(--primary-hover)}.preview-toggle-wrapper input[type=checkbox]:checked:after{transform:translate(20px)}#log-list{list-style-type:none;height:200px;overflow-y:auto;border:1px solid var(--border-color);border-radius:5px;padding:.5rem;background:var(--surface-color)}#log-list li{padding:.5rem;border-bottom:1px solid var(--border-color);cursor:pointer;font-size:.9rem;display:flex;justify-content:space-between;align-items:center;-webkit-tap-highlight-color:transparent;border-radius:3px;transition:background-color .2s}#log-list li:last-child{border-bottom:none}#log-list li.selected{background-color:var(--primary-hover);color:var(--text-color)}.log-entry-result{display:flex;align-items:center;gap:.5rem}.log-color-name{font-size:.9em;opacity:.9}.log-color-box{width:20px;height:20px;border:1px solid var(--border-color);flex-shrink:0}#rules-panel h4{margin-top:1rem;margin-bottom:.5rem;border-bottom:1px solid var(--border-color);padding-bottom:.25rem}#rules-panel h4:first-child{margin-top:0}#rules-panel ul{padding-left:1.5rem;line-height:1.6;margin-bottom:1rem}#rules-panel p{line-height:1.6}#rules-panel strong{color:var(--primary-color)}.color-mix-container{display:flex;gap:1.5rem;margin-top:.5rem;align-items:flex-start;overflow-x:auto}.color-mix-column{flex:1;display:flex;flex-direction:column;gap:.4rem}.color-mix-entry{display:flex;align-items:center;gap:.3rem;font-size:.75rem}.color-mix-box{width:15px;height:15px;border:1px solid var(--border-color);flex-shrink:0}#custom-shape-designer-modal{z-index:1000;background-color:#000000b3;padding:1rem;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.designer-content{background-color:var(--surface-color);padding:2rem;border-radius:12px;border:1px solid var(--border-color);width:100%;max-width:500px;display:flex;flex-direction:column;align-items:center;gap:1.5rem;box-shadow:0 8px 30px #00000080;animation:fadeInModal .3s ease-out}@keyframes fadeInModal{0%{opacity:0;transform:translateY(20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.designer-content h3{color:var(--primary-color);font-size:1.5rem;margin:0}.designer-content p{text-align:center;line-height:1.5;font-size:.95rem;max-width:90%;color:#fffc;margin:-1rem 0 0}.designer-grid-container{display:grid;grid-template-columns:repeat(4,60px);grid-template-rows:repeat(4,60px);gap:5px;background:var(--bg-color);padding:10px;border:1px solid var(--border-color);border-radius:8px}.designer-cell{width:100%;height:100%;background-color:var(--surface-color);cursor:pointer;border:1px solid var(--border-color);border-radius:4px;transition:background-color .2s;padding:2px}.designer-cell:hover{background-color:var(--primary-hover)}.designer-cell canvas{width:100%;height:100%;pointer-events:none}#designer-preview-wrapper{display:flex;flex-direction:column;align-items:center;gap:.5rem}#designer-preview-wrapper h4{margin:0;font-weight:400;font-size:.9rem;color:var(--text-color);border:none}#designer-preview-canvas{width:80px;height:80px;background:var(--bg-color);border:1px solid var(--border-color);border-radius:4px}#custom-shape-designer-modal .menu-buttons{display:flex;flex-direction:row;gap:1rem;margin-top:1rem;align-items:center}#custom-shape-designer-modal .menu-buttons button{margin:0;height:52px;padding:0 2rem;display:inline-flex;align-items:center;justify-content:center}@keyframes flash-bg{0%{background-color:var(--surface-color)}50%{background-color:var(--primary-hover)}to{background-color:var(--surface-color)}}#log-list.flash{animation:flash-bg .6s ease-in-out}@media (max-width: 420px){.title{font-size:2.5rem;margin-bottom:1.5rem}#screen-custom-creator .selector-grid{grid-template-columns:repeat(auto-fill,minmax(50px,1fr));gap:.5rem}#intro-rules{padding:.8rem}#intro-rules h4{margin-top:.5rem}.color-mix-container{gap:.5rem}.color-mix-column{gap:.4rem}.designer-grid-container{grid-template-columns:repeat(4,50px);grid-template-rows:repeat(4,50px)}.designer-content{padding:1.5rem 1rem;gap:1rem}#custom-shape-designer-modal .menu-buttons{flex-direction:column;width:100%}#custom-shape-designer-modal .menu-buttons button{width:100%}}