/* Snakillion: the word chain game (js/snakillion.js). A neon pixel arcade: near-black, glowing snake green, hot pink and gold. */

:root {
  --bg: #04090b;
  --bg2: #0a1815;
  --panel: #0b1a16;
  --line: #164a36;
  --muted: #8fb9a3;
  --cream: #eafff2;
  --green: #3dff7a;
  --copper: #ff3da0;
  --gold: #ffe14a;
  --red: #ff4d5e;
  --display: 'Jersey 10', 'VT323', monospace;
  --body: 'VT323', ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  min-height: 100vh;
  background:
    repeating-linear-gradient(0deg, rgb(61 255 122 / 0.035) 0 1px, transparent 1px 4px) fixed,
    radial-gradient(110% 60% at 50% -5%, #0f3a26 0%, var(--bg) 62%) fixed, var(--bg);
  color: var(--cream);
  font: 400 1.35rem/1.3 var(--body);
}
a { color: var(--gold); text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }
button, input { font: inherit; color: inherit; }
[hidden] { display: none !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Top bar ---------- */
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; max-width: 760px; margin: 0 auto; padding: 12px 16px; }
.top__back { color: var(--muted); text-decoration: none; }
.top__back:hover { color: var(--cream); }
.top__brand { font: 400 1.7rem/1 var(--display); letter-spacing: 0.06em; text-transform: uppercase; color: var(--green); text-shadow: 0 0 10px rgb(61 255 122 / 0.55); }
.top__sound { padding: 4px 10px; border: 2px solid var(--line); background: none; color: var(--muted); cursor: pointer; }
.top__sound:hover { color: var(--cream); border-color: var(--muted); }
.top__sound[aria-pressed="false"] { text-decoration: line-through; }

.wrap { max-width: 560px; margin: 0 auto; padding: 0 16px; }

/* ---------- Menu ---------- */
.screen { padding: 8px 0 32px; }
.bird {
  display: block; width: 288px; max-width: 80%; height: auto; margin: 14px auto 0; filter: drop-shadow(0 0 10px rgb(61 255 122 / 0.45));
  image-rendering: pixelated; image-rendering: crisp-edges;
  animation: slither 2.4s steps(2) infinite;
}
@keyframes slither { 0%, 100% { transform: translateX(0); } 50% { transform: translateX(3px); } }
@keyframes peck { 0%, 86%, 100% { transform: translateY(0); } 90% { transform: translateY(3px); } 94% { transform: translateY(0); } 97% { transform: translateY(2px); } }
.title { margin-top: 6px; font: 400 clamp(4rem, 17vw, 6.5rem)/0.9 var(--display); letter-spacing: 0.04em; text-align: center; color: var(--green); text-shadow: 0 0 18px rgb(61 255 122 / 0.5), 4px 4px 0 #0b5d2a, 8px 8px 0 #031a0c; }
.title span { color: var(--copper); text-shadow: 0 0 18px rgb(255 61 160 / 0.55), 4px 4px 0 #6b1346, 8px 8px 0 #1c0412; }
.tag { margin-top: 10px; text-align: center; color: var(--muted); font-size: 1.5rem; }

.howto { margin: 22px 0 6px; padding: 14px 16px 14px 36px; background: var(--panel); box-shadow: 0 0 0 3px var(--line); }
.howto li { margin: 4px 0; }
.howto b { color: var(--gold); font-weight: 400; }
.howto .ex { display: block; color: var(--muted); }
.howto .ex b { color: var(--copper); }
.fz { letter-spacing: 0.08em; color: var(--red) !important; }

.label { margin: 18px 0 6px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.12em; font-size: 1.05rem; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { flex: 1 1 0; min-width: 90px; padding: 8px 10px; border: 0; background: var(--bg2); box-shadow: 0 0 0 3px var(--line); cursor: pointer; color: var(--muted); font-size: 1.35rem; }
.chip:hover { color: var(--cream); }
.chip[aria-pressed="true"] { background: var(--green); box-shadow: 0 0 0 3px #b6ffd0, 0 0 16px rgb(61 255 122 / 0.5); color: #03140a; }
.note { margin-top: 8px; color: var(--muted); font-size: 1.15rem; min-height: 1.3em; }

.actions { margin-top: 22px; text-align: center; }
.btn {
  display: inline-block; padding: 10px 26px; border: 0; cursor: pointer;
  background: var(--bg2); color: var(--cream); box-shadow: 0 0 0 3px var(--line), 4px 4px 0 3px #050a07;
  font: 400 1.6rem/1 var(--display); letter-spacing: 0.05em; text-transform: uppercase;
}
.btn:active { transform: translate(2px, 2px); box-shadow: 0 0 0 3px var(--line), 2px 2px 0 3px #050a07; }
.btn--gold { background: var(--gold); color: #2a1606; box-shadow: 0 0 0 3px #8a6d12, 4px 4px 0 3px #050a07, 0 0 18px rgb(255 225 74 / 0.35); }
.btn--gold:hover { background: #ffd56b; }
.btn:disabled { opacity: 0.6; cursor: wait; }
#play { min-width: 220px; font-size: 2rem; padding: 12px 30px; }

.stats { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 18px; margin-top: 22px; list-style: none; color: var(--muted); }
.stats b { color: var(--gold); font-weight: 400; }

/* ---------- Game ---------- */
.score { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 8px; margin-top: 6px; }
.side { text-align: left; }
.side--bot { text-align: right; }
.side__name { color: var(--muted); text-transform: uppercase; letter-spacing: 0.1em; font-size: 1.05rem; }
.side__letters { font: 400 1.9rem/1 var(--display); letter-spacing: 0.08em; }
.side__letters span { color: #2a4136; }
.side__letters span.on { color: var(--red); text-shadow: 2px 2px 0 #4a120c; }
.side.hit .side__letters span.on:last-of-type { animation: pop 0.5s steps(3); }
@keyframes pop { 0% { transform: scale(2); } 100% { transform: scale(1); } }
.side__letters span { display: inline-block; }
.round { color: var(--muted); font-size: 1.1rem; text-align: center; }

.chain {
  list-style: none; margin: 16px 0 12px; padding: 10px 12px; min-height: 180px; max-height: 300px; overflow-y: auto;
  background: var(--panel); box-shadow: 0 0 0 3px var(--line);
}
.chain__w { display: flex; align-items: baseline; gap: 10px; padding: 3px 0; animation: drop 0.25s steps(3); }
@keyframes drop { from { transform: translateY(-6px); opacity: 0; } to { transform: none; opacity: 1; } }
.chain__who { flex: 0 0 48px; color: var(--muted); font-size: 1rem; text-transform: uppercase; letter-spacing: 0.08em; }
.chain__word { font-size: 1.75rem; letter-spacing: 0.06em; word-break: break-all; }
.chain__w--bot .chain__word { color: #bff7d6; }
.chain__w--game .chain__word { color: var(--muted); }
.chain__word .h { color: var(--copper); }
.trail { display: block; width: 288px; max-width: 70%; height: auto; margin: 14px auto 0; image-rendering: pixelated; image-rendering: crisp-edges; filter: drop-shadow(0 0 6px rgb(61 255 122 / 0.4)); }
.trail + .chain { margin-top: 8px; }
.chain__word .t { color: var(--gold); text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 4px; }
.chain__word .ht { color: var(--gold); }

.turn__who { text-align: center; font-size: 1.45rem; }
.turn__who b { color: var(--gold); font-weight: 400; letter-spacing: 0.08em; }
.dots::after { content: ''; animation: dots 1.2s steps(4) infinite; }
@keyframes dots { 0% { content: ''; } 25% { content: '.'; } 50% { content: '..'; } 75% { content: '...'; } }
.timer { height: 8px; margin: 10px 0 12px; background: #0a140f; box-shadow: 0 0 0 2px var(--line); }
.timer i { display: block; height: 100%; width: 100%; background: var(--green); box-shadow: 0 0 10px var(--green); }
.timer i.low { background: var(--red); box-shadow: 0 0 10px var(--red); }

.play { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
.play__pre { display: none; }
.field {
  width: 100%; padding: 10px 12px; border: 0; background: #07100b; color: var(--cream);
  box-shadow: 0 0 0 3px var(--line); font-size: 1.8rem; letter-spacing: 0.06em; text-transform: lowercase;
}
.field:focus-visible { outline: 0; box-shadow: 0 0 0 3px var(--gold); }
.shake { animation: shake 0.3s steps(4); }
@keyframes shake { 25% { transform: translateX(-4px); } 50% { transform: translateX(4px); } 75% { transform: translateX(-2px); } }
.msg { min-height: 1.4em; margin-top: 8px; color: #ff9b8e; text-align: center; }
.link { display: block; margin: 6px auto 0; border: 0; background: none; color: var(--muted); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.link:hover { color: var(--cream); }

.result { padding: 18px 16px; text-align: center; background: var(--panel); box-shadow: 0 0 0 3px var(--copper), 0 0 22px rgb(255 61 160 / 0.3); }
.result__title { font: 400 2.4rem/1 var(--display); color: var(--gold); letter-spacing: 0.04em; }
.result__text { margin: 10px 0 16px; color: var(--muted); }
.result__text b { color: var(--cream); font-weight: 400; }

/* ---------- With friends ---------- */
.btn--friends { margin-top: 12px; display: block; margin-left: auto; margin-right: auto; font-size: 1.5rem; }
.btn--small { padding: 6px 14px; font-size: 1.15rem; }
.sub { margin-top: 10px; font: 400 2.4rem/1 var(--display); color: var(--cream); text-align: center; letter-spacing: 0.04em; text-shadow: 3px 3px 0 var(--copper); }
.field--small { font-size: 1.3rem; padding: 6px 10px; }
.code { text-transform: uppercase; letter-spacing: 0.3em; text-align: center; }
.rooms { list-style: none; display: grid; gap: 8px; }
.room { width: 100%; display: flex; justify-content: space-between; gap: 10px; padding: 8px 12px; border: 0; background: var(--bg2); box-shadow: 0 0 0 3px var(--line); cursor: pointer; text-align: left; }
.room:hover { box-shadow: 0 0 0 3px var(--gold); }
.room__name { color: var(--cream); }
.room__meta { color: var(--muted); font-size: 1.1rem; white-space: nowrap; align-self: center; }
.room__none { color: var(--muted); }

.roomhead { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 6px; }
.roomhead__name { font: 400 1.9rem/1 var(--display); color: var(--cream); letter-spacing: 0.03em; word-break: break-word; }
.roomhead__code { margin-top: 2px; color: var(--muted); }
.roomhead__code b { color: var(--gold); font-weight: 400; letter-spacing: 0.25em; font-size: 1.5rem; }

.seats { list-style: none; display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; margin: 14px 0; }
.seat { position: relative; display: grid; grid-template-columns: 56px 1fr; align-items: center; column-gap: 8px; padding: 8px; background: var(--panel); box-shadow: 0 0 0 3px var(--line); }
.seat.you { box-shadow: 0 0 0 3px #4f7f63; }
.seat.turn { box-shadow: 0 0 0 3px var(--gold), 0 0 18px rgb(255 225 74 / 0.35); background: #12382a; }
.seat.turn .seat__bird { animation: slither 0.8s steps(2) infinite; }
.seat.out { opacity: 0.45; filter: grayscale(0.7); }
.seat.away { opacity: 0.6; }
.seat.hit { animation: shake 0.35s steps(4); }
.seat__bird { grid-row: 1 / span 2; width: 56px; height: auto; image-rendering: pixelated; image-rendering: crisp-edges; }
.seat__name { font-size: 1.25rem; line-height: 1.1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.seat__letters { font-size: 1.25rem; }
.seat__tag { position: absolute; top: 2px; right: 6px; color: var(--gold); font-style: normal; font-size: 0.95rem; }
.seat__wins { position: absolute; bottom: 2px; right: 6px; color: var(--muted); font-size: 0.9rem; }
.seat__bubble { position: absolute; left: 50%; top: -14px; transform: translateX(-50%); z-index: 2; max-width: 90%; padding: 2px 8px; background: var(--cream); color: #1a1208; box-shadow: 0 0 0 2px #1a1208; font-size: 1.1rem; white-space: nowrap; animation: drop 0.2s steps(3); }

.chain__who--room { flex-basis: 72px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chain__w--you .chain__word { color: var(--gold); }
.typing { min-height: 1.4em; margin: -2px 0 8px; text-align: center; color: var(--muted); letter-spacing: 0.08em; }
.podium { list-style: none; margin: 12px 0 16px; text-align: left; display: inline-block; }
.podium li { margin: 4px 0; }
.podium b { color: var(--gold); font-weight: 400; }
.muted { color: var(--muted); font-size: 1.1rem; }
#r-done .actions .link { margin-top: 10px; }

.reacts { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; justify-content: center; }
.react { padding: 3px 10px; border: 0; background: var(--bg2); box-shadow: 0 0 0 2px var(--line); color: var(--muted); cursor: pointer; font-size: 1.1rem; }
.react:hover { color: var(--cream); box-shadow: 0 0 0 2px var(--gold); }
.chat { margin-top: 14px; background: var(--panel); box-shadow: 0 0 0 3px var(--line); padding: 8px 12px; }
.chat summary { cursor: pointer; color: var(--muted); text-transform: uppercase; letter-spacing: 0.12em; font-size: 1.05rem; }
.chat__n { margin-left: 6px; padding: 0 7px; background: var(--red); color: #fff; letter-spacing: 0; }
.chat__log { list-style: none; max-height: 160px; overflow-y: auto; margin: 8px 0; font-size: 1.2rem; }
.chat__log li { margin: 2px 0; word-break: break-word; }
.chat__log b { color: var(--copper); font-weight: 400; }
.chat__me b { color: var(--gold); }
@media (max-width: 420px) { .seats { grid-template-columns: repeat(2, 1fr); } .seat { grid-template-columns: 44px 1fr; } .seat__bird { width: 44px; } }

.pass-note { text-align: center; margin-top: 14px; }
.pass-note b { color: var(--gold); font-weight: 400; }
.link--inline { display: inline; margin: 0; color: var(--gold); }
.pass { margin-top: 14px; padding: 16px; text-align: center; background: var(--panel); box-shadow: 0 0 0 3px var(--copper), 0 0 22px rgb(255 61 160 / 0.3); }
.pass__lead { color: var(--gold); margin-bottom: 6px; }
.pass__title { font: 400 2.2rem/1 var(--display); color: var(--green); letter-spacing: 0.04em; margin-bottom: 8px; }
.pass__title span { color: var(--copper); }
.pass p { margin: 6px 0; }
.pass .btn { margin: 8px 0; }
.pass .play { margin-top: 10px; }
#pass-google { display: flex; justify-content: center; margin: 8px 0; }

/* ---------- About (for readers and search engines) ---------- */
.about { padding-top: 24px; padding-bottom: 60px; border-top: 3px solid var(--line); margin-top: 10px; color: #d9d2bd; }
.about h2 { margin: 26px 0 8px; font: 400 2rem/1 var(--display); color: var(--green); letter-spacing: 0.03em; }
.about p, .about li { margin: 6px 0; }
.about ol, .about ul { padding-left: 24px; }
.about strong { color: var(--cream); font-weight: 400; }
.about em { color: var(--gold); font-style: normal; }
.faq dt { margin-top: 12px; color: var(--cream); }
.faq dd { color: #c9c1aa; }
.more { margin-top: 24px !important; color: var(--muted); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; }
}