@layer theme{:root,:host{--font-sans:ui-sans-serif,system-ui,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";--font-mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;-moz-tab-size:4;-o-tab-size:4;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif,system-ui,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier 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optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::-moz-placeholder{opacity:1}::placeholder{opacity:1}@supports (not (-webkit-appearance:-apple-pay-button)) or (contain-intrinsic-size:1px){::-moz-placeholder{color:currentColor}::placeholder{color:currentColor}@supports (color:color-mix(in lab,red,red)){::-moz-placeholder{color:color-mix(in oklab,currentcolor 50%,transparent)}::placeholder{color:color-mix(in oklab,currentcolor 50%,transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){-webkit-appearance:button;-moz-appearance:button;appearance:button}::file-selector-button{-webkit-appearance:button;-moz-appearance:button;appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.invisible{visibility:hidden}.contents{display:contents}}:root{font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--color-bg-primary:#1a1a2e;--color-bg-secondary:#16213e;--color-bg-card:#1e2a4a;--color-bg-input:#2a3a5a;--color-border:#3a4a6a;--color-border-hover:#4a5a7a;--color-text-primary:#eee;--color-text-secondary:#abc;--color-text-muted:#89a;--color-accent:#4a90d9;--color-accent-hover:#5aa0e9;--color-success:#4a9a6a;--color-error:#9a4a4a;--color-warning:#dfaf4f;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;font-weight:400;line-height:1.5}.board{display:inline-flex;flex-direction:column;background:#dcb35c;padding:20px;border-radius:4px;box-shadow:0 2px 8px #0000004d}.board-row{display:flex}.intersection{width:28px;height:28px;position:relative;cursor:pointer;display:flex;align-items:center;justify-content:center}.intersection:hover{background:#0000001a}.intersection.invalid-hover:hover{background:#ff000026;cursor:not-allowed}.grid-lines{position:absolute;inset:0;pointer-events:none}.h-line{position:absolute;top:50%;left:0;right:0;height:1px;background:#8b6914;transform:translateY(-50%)}.h-line.edge-left{left:50%}.h-line.edge-right{right:50%}.v-line{position:absolute;left:50%;top:0;bottom:0;width:1px;background:#8b6914;transform:translate(-50%)}.v-line.edge-top{top:50%}.v-line.edge-bottom{bottom:50%}.star-point{width:8px;height:8px;background:#8b6914;border-radius:50%;z-index:1}.stone{width:24px;height:24px;border-radius:50%;z-index:2;box-shadow:1px 1px 2px #0006;transition:transform .1s}.stone.black{background:radial-gradient(circle at 30% 30%,#555,#000)}.stone.white{background:radial-gradient(circle at 30% 30%,#fff,#ccc);border:1px solid #999}.stone:hover{transform:scale(1.05)}.board-controls{display:flex;flex-direction:column;gap:16px;padding:16px;background:var(--color-bg-card);border-radius:8px;border:1px solid var(--color-border);min-width:250px}.control-section{border-bottom:1px solid var(--color-border);padding-bottom:16px}.control-section:last-child{border-bottom:none;padding-bottom:0}.control-section h3{margin:0 0 12px;font-size:11px;color:var(--color-text-muted);font-weight:600;text-transform:uppercase;letter-spacing:.5px}.seed-input{width:100%;padding:10px 12px;border:1px solid var(--color-border-hover);border-radius:4px;font-size:14px;background:var(--color-bg-input);color:var(--color-text-primary);box-sizing:border-box}.seed-input:focus{outline:none;border-color:var(--color-accent)}.seed-hint{margin:8px 0 0;font-size:12px;color:var(--color-text-muted);font-style:italic}.mode-toggle{width:100%;padding:14px;font-size:14px;font-weight:600;border:2px solid var(--color-border-hover);border-radius:6px;background:var(--color-bg-input);color:var(--color-text-primary);cursor:pointer;transition:all .2s}.mode-toggle:hover{border-color:var(--color-accent);background:var(--color-border)}.mode-toggle.active{background:var(--color-accent);color:#fff;border-color:var(--color-accent)}.dummy-options{margin-top:12px;padding:12px;background:var(--color-bg-input);border-radius:6px;display:flex;flex-direction:column;gap:12px}.colour-selector{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.colour-selector label{font-size:13px;color:var(--color-text-secondary);margin-right:4px}.colour-btn{padding:8px 14px;border:2px solid var(--color-border-hover);border-radius:4px;cursor:pointer;font-size:13px;background:var(--color-border);color:var(--color-text-primary);transition:all .2s}.colour-btn:hover{border-color:#6a7a9a;background:var(--color-border-hover)}.colour-btn.selected{border-color:var(--color-accent);background:var(--color-accent);color:#fff}.colour-btn.black.selected{background:#333;border-color:#666}.colour-btn.white.selected{background:#eee;color:#333;border-color:#ccc}.dummy-count{font-size:13px;color:var(--color-text-secondary);margin:0}.clear-btn{padding:10px;border:1px solid var(--color-error);border-radius:4px;background:#3a1a1a;color:#df8f8f;font-size:13px;cursor:pointer;transition:all .2s}.clear-btn:hover:not(:disabled){background:#4a2a2a;border-color:#ba5a5a}.clear-btn:disabled{opacity:.5;cursor:not-allowed}.instructions{padding:12px;background:var(--color-bg-input);border-radius:6px}.instructions p{margin:0 0 6px;font-size:12px;color:var(--color-text-secondary);line-height:1.4}.instructions p:last-child{margin-bottom:0}.instructions 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var(--color-border-hover);border-radius:4px;box-sizing:border-box;background:var(--color-bg-input);color:#fff}.input-group input::-moz-placeholder{color:var(--color-text-muted)}.input-group input::placeholder{color:var(--color-text-muted)}.input-group input:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 2px #6a9fd94d}.input-status{display:flex;justify-content:space-between;align-items:center;gap:8px}.char-count{font-size:11px;color:var(--color-text-muted)}.padding-hint{font-size:11px;color:var(--color-warning);font-style:italic}.button-group{display:flex;gap:8px}.button-group button{flex:1;padding:10px;border:none;border-radius:4px;font-size:13px;cursor:pointer;transition:background .2s;font-weight:500}.btn-generate{background:var(--color-accent);color:#fff}.btn-generate:hover{background:var(--color-accent-hover)}.btn-clear{background:var(--color-border);color:var(--color-text-primary)}.btn-clear:hover{background:var(--color-border-hover)}*{box-sizing:border-box}body{margin:0;background:var(--color-bg-primary);color:var(--color-text-primary);min-height:100vh}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{text-align:center;padding:20px;background:var(--color-bg-secondary);border-bottom:1px solid var(--color-border)}.app-header h1{margin:0 0 8px;font-size:28px}.app-header p{margin:0;color:var(--color-text-secondary);font-size:14px}.app-main{flex:1;display:flex;padding:24px;gap:24px;justify-content:center;flex-wrap:wrap}.controls-panel{display:flex;flex-direction:column;gap:16px;max-width:320px}.board-container{display:flex;align-items:flex-start;justify-content:center}.app-footer{text-align:center;padding:16px;background:var(--color-bg-secondary);border-top:1px solid var(--color-border)}.app-footer p{margin:0;font-size:12px;color:var(--color-text-muted)}@media(max-width:900px){.app-main{flex-direction:column;align-items:center}.controls-panel{max-width:100%;width:100%}}