:root{--color-grid-bg: #1a1a2e;--color-grid-line: rgba(255, 255, 255, .05);--color-snake-head: #e94560;--color-snake-body: #0f3460;--color-snake-outline: #e94560;--color-apple: #ff6b6b;--color-cherry: #c0392b;--color-banana: #f1c40f;--color-starfruit: #2ecc71;--color-golden-apple: #f39c12;--color-bg: #0d0d1a;--color-surface: #16213e;--color-surface-raised: #1e2a4a;--color-border: rgba(255, 255, 255, .1);--color-text-primary: #eaeaea;--color-text-secondary: #8899aa;--color-text-muted: #556677;--color-accent: #e94560;--color-accent-hover: #ff6b82;--color-success: #2ecc71;--color-error: #e74c3c;--color-warning: #f39c12;--color-key-bg: #16213e;--color-key-bg-hover: #1e2a4a;--color-key-bg-active: #e94560;--color-key-text: #eaeaea;--color-key-directional-border: #e94560;--color-key-disabled-bg: #0d0d1a;--color-key-disabled-text: #334455;--color-modifier-bg: #1a1a2e;--color-modifier-border: #f39c12;--color-modifier-text: #f39c12;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .4);--shadow-md: 0 4px 12px rgba(0, 0, 0, .5);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .7);--font-display: "Space Mono", "Courier New", monospace;--font-ui: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-6: 1.5rem;--space-8: 2rem;--space-12: 3rem;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 12px;--radius-full: 9999px;--animation-step-duration: .15s;--animation-easing: ease-in-out;--transition-ui: .12s ease;--cell-size: clamp(18px, 2.5vmin, 32px);--grid-cols: 20;--grid-rows: 20}@media(prefers-reduced-motion:reduce){:root{--animation-step-duration: 0ms;--transition-ui: 0ms}}[data-theme=light]{--color-grid-bg: #e8eaf0;--color-grid-line: rgba(0, 0, 0, .06);--color-snake-head: #c0392b;--color-snake-body: #2980b9;--color-bg: #f5f6fa;--color-surface: #ffffff;--color-surface-raised: #eef0f8;--color-border: rgba(0, 0, 0, .12);--color-text-primary: #1a1a2e;--color-text-secondary: #445566;--color-text-muted: #8899aa;--color-key-bg: #e0e4f0;--color-key-bg-hover: #d0d4e8;--color-key-text: #1a1a2e;--color-key-disabled-bg: #f0f2f8;--color-key-disabled-text: #aabbcc}[data-contrast=high]{--color-snake-head: #ff0044;--color-text-primary: #ffffff;--color-text-secondary: #ccddee;--color-key-bg: #000033;--color-key-text: #ffffff;--color-border: rgba(255, 255, 255, .4)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-ui);font-size:var(--font-size-base);color:var(--color-text-primary);background-color:var(--color-bg);-webkit-font-smoothing:antialiased}body{min-height:100dvh;overflow-x:hidden}#svelte{display:contents}h1,h2,h3{font-family:var(--font-display);letter-spacing:-.02em}button{cursor:pointer;font-family:inherit;border:none;background:none}button:disabled{cursor:not-allowed}:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;border-radius:var(--radius-sm)}.skip-link{position:absolute;top:-100%;left:var(--space-4);background:var(--color-accent);color:#fff;padding:var(--space-2) var(--space-4);border-radius:var(--radius-md);font-weight:600;z-index:9999;text-decoration:none}.skip-link:focus{top:var(--space-4)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.panel.svelte-d580bl{position:fixed;top:var(--space-4);right:var(--space-4);width:min(360px,calc(100vw - var(--space-8)));background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);z-index:50;display:flex;flex-direction:column}.panel__header.svelte-d580bl{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4) var(--space-6);border-bottom:1px solid var(--color-border)}.panel__header.svelte-d580bl h2:where(.svelte-d580bl){font-family:var(--font-display);font-size:var(--font-size-lg)}.panel__close.svelte-d580bl{background:none;border:none;color:var(--color-text-secondary);font-size:var(--font-size-lg);cursor:pointer;padding:var(--space-1);border-radius:var(--radius-sm)}.panel__close.svelte-d580bl:hover{color:var(--color-text-primary)}.panel__body.svelte-d580bl{padding:var(--space-6);display:flex;flex-direction:column;gap:var(--space-6)}.fieldset.svelte-d580bl{border:none;padding:0;margin:0;display:flex;flex-direction:column;gap:var(--space-3)}.fieldset__legend.svelte-d580bl{font-size:var(--font-size-sm);font-weight:600;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--space-2)}.radio-group.svelte-d580bl{display:flex;gap:var(--space-4)}.radio-label.svelte-d580bl,.toggle-label.svelte-d580bl{display:flex;align-items:center;gap:var(--space-2);cursor:pointer;font-size:var(--font-size-sm);color:var(--color-text-primary)}.range-input.svelte-d580bl{width:100%;accent-color:var(--color-accent)}.range-input.svelte-d580bl:disabled{opacity:.4}.app-shell.svelte-12qhfyh{position:relative;min-height:100dvh}.settings-trigger.svelte-12qhfyh{position:fixed;top:var(--space-3);right:var(--space-3);display:flex;align-items:center;gap:var(--space-3);z-index:40;background-color:color-mix(in srgb,var(--color-surface) 90%,transparent);border:1px solid var(--color-border);border-radius:var(--radius-full);padding:var(--space-2) var(--space-3);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.nav-link.svelte-12qhfyh{color:var(--color-text-secondary);text-decoration:none;font-size:var(--font-size-sm);font-weight:500;transition:color var(--transition-ui)}.nav-link.svelte-12qhfyh:hover{color:var(--color-text-primary)}.settings-btn.svelte-12qhfyh{background:none;border:none;font-size:var(--font-size-base);cursor:pointer;padding:0;line-height:1;opacity:.7;transition:opacity var(--transition-ui),transform var(--transition-ui)}.settings-btn.svelte-12qhfyh:hover{opacity:1;transform:rotate(30deg)}