:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #e8eef6;
  background: #0b1020;
  font-synthesis: none;
  --mint: #72edcf;
  --muted: #8a97ae;
  --border: #263148;
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: radial-gradient(ellipse at 20% 0%, #172638 0, transparent 60%); }
button { font: inherit; cursor: pointer; }
[hidden] { display: none !important; }
button:disabled { opacity: 0.4; cursor: default; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid var(--mint); outline-offset: 4px; }
button { -webkit-tap-highlight-color: transparent; }
.app { max-width: 1440px; margin: auto; padding: 38px 40px 24px; }
.masthead { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 32px; }
.brand { display: flex; align-items: center; gap: 14px; }
h1 { margin: 0; font-size: 25px; letter-spacing: -1px; }
.version { display: inline-block; margin-left: 14px; vertical-align: middle; color: #6d809a; font-size: 9px; letter-spacing: 1.5px; }
.brand p { color: var(--muted); margin: 6px 0 0; font-size: 12px; }
.local-badge { display: flex; align-items: center; gap: 8px; white-space: nowrap; border: 1px solid #28443f; background: #14282a; color: #a6dccf; padding: 9px 12px; border-radius: 30px; font-size: 10px; font-weight: 650; letter-spacing: 1px; }
.status-dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--mint); }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 250px; gap: 22px; align-items: start; }
.play-area { overflow: hidden; border: 1px solid var(--border); border-radius: 16px; background: #111b2d; box-shadow: 0 18px 80px #0003; }
.arena-toolbar { min-height: 59px; padding: 12px 18px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; border-bottom: 1px solid var(--border); }
.arena-name { display: flex; align-items: center; gap: 9px; color: #acb9cc; font-size: 10px; letter-spacing: 1.4px; font-weight: 650; }
.toolbar-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.view-button { color: var(--mint); }
.zoom-controls { display: flex; align-items: center; border: 1px solid #33495a; border-radius: 6px; overflow: hidden; }
.zoom-controls button { background: #172b35; color: #b1ebdc; border: 0; padding: 6px 8px; font-size: 11px; }
.zoom-controls button:hover:not(:disabled) { background: #25434a; }
.zoom-controls .zoom-readout { min-width: 46px; font-variant-numeric: tabular-nums; font-size: 10px; }
.quiet-button { border: 1px solid transparent; background: transparent; padding: 7px 8px; border-radius: 6px; color: #b4bfd0; font-size: 11px; }
.quiet-button:hover:not(:disabled) { background: #202d43; color: white; }
html[data-mode="dev"] .menu-button { border-color: #3b7d70; background: #183b37; color: var(--mint); font-weight: 650; }
kbd { border: 1px solid #3a475c; padding: 2px 5px; border-radius: 4px; color: #acbacd; font-family: inherit; font-size: 10px; white-space: nowrap; }
.quiet-button kbd { margin-left: 5px; }
.canvas-wrap { position: relative; background: #091321; }
canvas { display: block; width: 100%; aspect-ratio: 3 / 2; outline: none; touch-action: none; }
canvas:focus-visible { box-shadow: inset 0 0 0 2px #72edcf55; }
.overlay { position: absolute; inset: 0; z-index: 2; display: flex; align-items: center; justify-content: center; padding: 20px; background: #09132183; backdrop-filter: blur(4px); }
.minimap-panel { position: absolute; z-index: 1; right: 12px; bottom: 12px; margin: 0; width: clamp(118px, 23%, 192px); padding: 8px; border: 1px solid #51637999; border-radius: 9px; background: #091321dc; pointer-events: none; }
.minimap-panel figcaption { display: flex; justify-content: space-between; gap: 5px; margin-bottom: 6px; font-size: 8px; letter-spacing: 0.5px; color: #b6c6d8; }
.minimap-panel figcaption span { font-size: 7px; letter-spacing: 0; color: #a1b2c8; }
.minimap-legend { display: flex; justify-content: space-between; gap: 5px; margin-top: 6px; font-size: 8px; color: #a5b5ca; }
.food-key { color: #72edcf; }
.snake-key { color: #ffb370; }
.overlay[hidden] { display: none; }
.overlay-card { max-width: 350px; text-align: center; }
.eyebrow { color: var(--mint); font-size: 9px; font-weight: 700; letter-spacing: 1.8px; }
.overlay h2 { font-size: clamp(29px, 4vw, 49px); line-height: 1.05; letter-spacing: -2px; margin: 19px 0 16px; }
.overlay p { color: #adbbce; font-size: 13px; line-height: 1.7; margin: 0 auto; max-width: 290px; }
.primary-button { display: flex; align-items: center; justify-content: space-between; gap: 50px; margin: 26px auto 14px; padding: 14px 20px; border: 0; border-radius: 9px; color: #10271f; background: var(--mint); font-size: 13px; font-weight: 750; box-shadow: 0 4px 25px #72edcf20; }
.primary-button:hover { background: #9bf9e0; transform: translateY(-1px); }
.overlay .overlay-hint { color: #8191a8; font-size: 10px; }
.arena-footer { display: flex; align-items: center; justify-content: space-between; gap: 10px; min-height: 52px; padding: 10px 17px; border-top: 1px solid var(--border); color: #7f91aa; font-size: 9px; letter-spacing: 0.8px; }
.player-dot { display: inline-block; margin-right: 5px; width: 7px; height: 7px; background: var(--mint); border-radius: 50%; }
.boost-button { border: 1px solid #3b5b5b; color: #b1ebdc; background: #192e35; padding: 7px 10px; border-radius: 6px; font-size: 10px; touch-action: none; user-select: none; }
.boost-button:active { background: #30554e; }
.sidebar { display: grid; gap: 16px; }
.panel { padding: 20px; border-radius: 13px; border: 1px solid var(--border); background: #111b2dd9; }
.score-panel { background: linear-gradient(135deg, #182d35, #111b2d 80%); }
.score-line { display: flex; align-items: baseline; gap: 9px; margin: 8px 0 19px; }
.score-line strong { font-size: 48px; line-height: 1.15; letter-spacing: -2px; font-variant-numeric: tabular-nums; }
.score-line > span { color: #8ca6ab; font-size: 12px; }
.run-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding-bottom: 17px; border-bottom: 1px solid var(--border); }
.run-stats div { display: grid; gap: 6px; }
.run-stats span { color: var(--muted); font-size: 10px; }
.run-stats strong { font-size: 15px; font-weight: 600; font-variant-numeric: tabular-nums; }
.boost-label { display: flex; justify-content: space-between; margin: 16px 0 8px; font-size: 9px; color: #9aacbe; }
#boost-state { color: var(--mint); }
meter { appearance: none; display: block; width: 100%; height: 5px; border: none; border-radius: 4px; background: #253548; }
meter::-webkit-meter-bar { height: 5px; border: 0; background: #253548; border-radius: 4px; }
meter::-webkit-meter-optimum-value { background: var(--mint); border-radius: 4px; }
meter::-moz-meter-bar { background: var(--mint); border-radius: 4px; }
.muted { margin: 10px 0 0; color: #71889a; font-size: 9px; }
.panel h2 { font-size: 12px; font-weight: 650; margin: 0; }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.small-tag { color: #718099; font-size: 8px; letter-spacing: 1px; }
.leaderboard { margin: 15px 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: minmax(0, 1fr); gap: 4px; max-height: 330px; overflow-y: auto; }
.leaderboard li { display: flex; align-items: center; gap: 9px; padding: 8px 7px; border-radius: 5px; font-size: 11px; color: #b5c0d1; }
.leaderboard .self { background: #72edcf0c; color: var(--mint); }
.rank { width: 11px; color: #66788f; font-size: 9px; }
.snake-swatch { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.snake-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.snake-score { font-variant-numeric: tabular-nums; }
.leaderboard .out { opacity: 0.45; }
.instructions h2 { margin-bottom: 17px; }
.control { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; color: #acb9cc; font-size: 10px; }
.control > span:first-child { color: #7f91aa; }
.instructions p { color: #71859f; font-size: 10px; line-height: 1.7; margin: 16px 0; }
.rule-note { border-top: 1px solid var(--border); padding-top: 14px; color: #8192aa; font-size: 10px; line-height: 1.8; }
.settings-panel { margin-bottom: 22px; }
.settings-intro { margin: 7px 0 0; color: var(--muted); font-size: 11px; line-height: 1.5; }
.settings-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; margin-top: 23px; }
.setting-control label { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; color: #c1ccda; font-size: 11px; line-height: 1.5; }
.setting-control output { color: var(--mint); font-variant-numeric: tabular-nums; white-space: nowrap; }
.setting-control input { display: block; width: 100%; margin: 13px 0; accent-color: var(--mint); cursor: pointer; }
.setting-control select { width: 100%; margin: 9px 0; padding: 7px 9px; border: 1px solid #3a475c; border-radius: 6px; color: #d5e2ef; background: #162439; font: inherit; font-size: 11px; }
.setting-control small { display: block; color: #8293aa; font-size: 10px; line-height: 1.6; }
.settings-preview { border-top: 1px solid var(--border); padding-top: 14px; margin: 18px 0 0; color: #a6b9ce; font-size: 11px; line-height: 1.7; }
#edit-settings { display: block; margin: 0 auto 12px; color: var(--mint); }
.player-fields { margin-top: 22px; text-align: left; }
.player-fields label { display: block; margin-bottom: 7px; color: #b7c7d9; font-size: 12px; }
.player-fields input[type="text"], .player-fields select { width: 100%; min-width: 0; padding: 12px; border: 1px solid #40536a; border-radius: 8px; background: #101d2d; color: #edf6ff; font: inherit; font-size: 16px; }
.appearance-controls { display: grid; grid-template-columns: 82px minmax(0, 1fr); gap: 14px; margin-top: 16px; }
.player-fields input[type="color"] { width: 100%; height: 43px; padding: 4px; border: 1px solid #40536a; border-radius: 8px; background: #101d2d; cursor: pointer; }
.snake-preview { display: block; width: 100%; height: 64px; margin: 14px 0 0; border-radius: 8px; background: #0a1625; }
.overlay .profile-error { max-width: none; margin-top: 8px; color: #ffb1b1; font-size: 12px; text-align: left; }
.profile-error:empty { display: none; }
.death-notice { position: absolute; z-index: 4; bottom: 24%; left: 50%; transform: translateX(-50%); width: max-content; max-width: 80%; padding: 12px 18px; border: 1px solid #ffc4a84d; border-radius: 9px; background: #192534e0; color: #ffe1d0; font-size: 13px; text-align: center; pointer-events: none; }
.page-footer { display: flex; justify-content: space-between; gap: 16px; margin-top: 23px; color: #65758e; font-size: 10px; line-height: 1.7; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
@media (max-width: 1050px) {
  .app { padding: 25px 22px; }
  .layout { grid-template-columns: minmax(0, 1fr) 220px; gap: 16px; }
  .panel { padding: 16px; }
  .version { display: none; }
}
@media (max-width: 780px) {
  .app { padding: 20px 14px; }
  .layout { grid-template-columns: 1fr; }
  .sidebar { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .instructions { grid-column: 1 / -1; }
  .instructions .control { max-width: 280px; }
  .masthead { margin-bottom: 22px; }
  .brand p { font-size: 10px; }
  .local-badge { font-size: 8px; padding: 7px 9px; }
  .page-footer { flex-direction: column; gap: 3px; }
  .settings-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
}
@media (max-width: 480px) {
  .sidebar { grid-template-columns: 1fr; }
  .brand { gap: 9px; }
  .brand img { width: 32px; height: 32px; }
  h1 { font-size: 21px; }
  .brand p { max-width: 195px; line-height: 1.5; }
  .arena-toolbar { padding: 8px 10px; min-height: 48px; }
  .arena-name { font-size: 8px; letter-spacing: 0.6px; }
  .quiet-button { font-size: 10px; padding: 5px; }
  .quiet-button kbd { display: none; }
  .overlay { padding: 10px; }
  .overlay h2 { font-size: 28px; letter-spacing: -1px; margin: 8px 0; }
  .overlay p { font-size: 10px; max-width: 220px; line-height: 1.4; }
  .overlay .eyebrow { font-size: 7px; }
  .primary-button { margin: 12px auto 6px; padding: 10px 16px; font-size: 11px; }
  .overlay .overlay-hint { font-size: 8px; }
  .arena-footer { font-size: 8px; padding: 8px 10px; }
  #arena-status { display: none; }
  .settings-panel > .panel-heading { align-items: flex-start; }
  .settings-panel > .panel-heading .quiet-button { flex-shrink: 0; }
  .setting-control label { font-size: 10px; }
  .settings-preview { font-size: 10px; }
  .minimap-panel { right: 7px; bottom: 7px; width: 112px; padding: 5px; }
  .minimap-panel figcaption { font-size: 7px; }
  .minimap-panel figcaption span { display: none; }
  .minimap-legend { font-size: 7px; }
}

html:is([data-mode="player"], [data-mode="multiplayer"]), html:is([data-mode="player"], [data-mode="multiplayer"]) body { width: 100%; height: 100%; min-width: 0; overflow: hidden; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .app { width: 100%; height: 100dvh; max-width: none; margin: 0; padding: 0; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .sr-only { top: 0; left: 0; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .masthead,
html:is([data-mode="player"], [data-mode="multiplayer"]) .settings-panel,
html:is([data-mode="player"], [data-mode="multiplayer"]) .page-footer,
html:is([data-mode="player"], [data-mode="multiplayer"]) .instructions,
html:is([data-mode="player"], [data-mode="multiplayer"]) .arena-name,
html:is([data-mode="player"], [data-mode="multiplayer"]) #pause,
html:is([data-mode="player"], [data-mode="multiplayer"]) #restart { display: none; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .layout { display: block; height: 100%; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .play-area { height: 100%; border: 0; border-radius: 0; box-shadow: none; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .canvas-wrap { position: fixed; inset: 0; width: 100%; height: 100dvh; }
html:is([data-mode="player"], [data-mode="multiplayer"]) #arena { width: 100%; height: 100%; aspect-ratio: auto; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .arena-toolbar { position: fixed; z-index: 5; top: max(16px, env(safe-area-inset-top)); left: max(16px, env(safe-area-inset-left)); min-height: 0; padding: 7px; border: 1px solid #33465c99; border-radius: 10px; background: #101e2bcc; backdrop-filter: blur(6px); }
html:is([data-mode="player"], [data-mode="multiplayer"]) .sidebar { display: contents; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .leaderboard-panel { position: fixed; z-index: 4; top: max(16px, env(safe-area-inset-top)); right: max(16px, env(safe-area-inset-right)); width: 210px; padding: 14px; border-color: #34475b66; background: #101e2ba8; pointer-events: none; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .leaderboard { margin-top: 9px; gap: 1px; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .leaderboard li { padding: 6px 4px; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .leaderboard-panel .small-tag { display: none; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .score-panel { position: fixed; z-index: 4; bottom: max(18px, env(safe-area-inset-bottom)); left: max(18px, env(safe-area-inset-left)); width: 155px; padding: 12px; border-color: #34475b66; background: #101e2ba8; pointer-events: none; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .score-line { margin: 5px 0 10px; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .score-line strong { font-size: 30px; letter-spacing: -1px; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .score-panel .run-stats { gap: 8px; padding-bottom: 9px; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .score-panel .run-stats > div:nth-child(n+3),
html:is([data-mode="player"], [data-mode="multiplayer"]) .score-panel .muted { display: none; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .boost-label { margin-top: 9px; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .arena-footer { position: fixed; z-index: 4; left: 50%; bottom: max(20px, env(safe-area-inset-bottom)); transform: translateX(-50%); min-height: 0; padding: 0; border: 0; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .arena-footer > span { display: none; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .boost-button { padding: 12px 18px; background: #122b36d9; font-size: 12px; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .minimap-panel { right: max(18px, env(safe-area-inset-right)); bottom: max(18px, env(safe-area-inset-bottom)); width: clamp(120px, 15vw, 190px); }
html:is([data-mode="player"], [data-mode="multiplayer"]) .overlay { z-index: 10; padding: 16px; background: #07101b7a; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .overlay-card { width: 400px; max-width: 100%; max-height: calc(100dvh - 32px); overflow-y: auto; padding: 28px; border: 1px solid #33485e; border-radius: 20px; background: #101c2aed; box-shadow: 0 20px 80px #0005; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .overlay h2 { font-size: 42px; letter-spacing: -1.5px; margin: 13px 0; }
html:is([data-mode="player"], [data-mode="multiplayer"]) .overlay .primary-button { width: 100%; justify-content: center; margin: 20px 0 14px; }
html:is([data-mode="player"], [data-mode="multiplayer"]) body:is([data-phase="ready"], [data-phase="over"], [data-phase="joining"]) :is(.arena-toolbar, .leaderboard-panel, .score-panel, .arena-footer, .minimap-panel) { visibility: hidden; }
@media (max-width: 600px) {
  html:is([data-mode="player"], [data-mode="multiplayer"]) .arena-toolbar { top: max(10px, env(safe-area-inset-top)); left: max(10px, env(safe-area-inset-left)); padding: 4px; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .toolbar-actions { gap: 3px; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .arena-toolbar #view-toggle { display: none; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .leaderboard-panel { top: max(10px, env(safe-area-inset-top)); right: max(10px, env(safe-area-inset-right)); width: 145px; padding: 9px; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .leaderboard-panel h2 { font-size: 10px; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .leaderboard li { padding: 4px 2px; gap: 5px; font-size: 10px; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .score-panel { left: max(10px, env(safe-area-inset-left)); bottom: max(10px, env(safe-area-inset-bottom)); width: 115px; padding: 9px; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .score-line strong { font-size: 24px; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .score-panel .run-stats { gap: 5px; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .boost-label { font-size: 8px; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .boost-label #boost-state { display: none; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .minimap-panel { right: max(10px, env(safe-area-inset-right)); bottom: max(10px, env(safe-area-inset-bottom)); width: 112px; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .arena-footer { bottom: max(18px, env(safe-area-inset-bottom)); }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .boost-button { padding: 11px 9px; font-size: 10px; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .overlay-card { padding: 20px; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .overlay h2 { font-size: 34px; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .overlay p { font-size: 12px; max-width: none; line-height: 1.6; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .overlay .eyebrow { font-size: 8px; }
  html:is([data-mode="player"], [data-mode="multiplayer"]) .overlay .overlay-hint { font-size: 10px; }
}
@media (max-height: 480px) {
  html:is([data-mode="player"], [data-mode="multiplayer"]) .leaderboard li:nth-child(n+4) { display: none; }
}

html[data-mode="multiplayer"] .leaderboard-panel .small-tag { display: inline; }
html[data-mode="multiplayer"] .leaderboard { max-height: min(330px, 35dvh); overflow-y: auto; pointer-events: auto; }
html[data-mode="multiplayer"] .leaderboard li:nth-child(n) { display: flex; }
html[data-mode="multiplayer"] body:is([data-phase="connecting"], [data-phase="disconnected"], [data-phase="leaving"]) :is(.arena-toolbar, .leaderboard-panel, .score-panel, .arena-footer, .minimap-panel) { visibility: hidden; }