:root {
    --bg: #1b1410;
    --panel: #2a201a;
    --panel-2: #36291f;
    --fg: #fbeee0;
    --muted: #b8a595;
    --accent: #ffb347;
    --accent-ink: #2a1605;
    --hot: #ff4d2e;
    --ok: #6fd08c;
    --radius: 16px;
    --heat: 0;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font: 17px/1.45 ui-rounded, "SF Pro Rounded", system-ui, -apple-system, "Segoe UI", sans-serif;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    -webkit-user-select: none;
    overflow-x: hidden;
}

.screen {
    min-height: 100dvh;
    max-width: 560px;
    margin: 0 auto;
    padding: max(20px, env(safe-area-inset-top)) 16px max(20px, env(safe-area-inset-bottom));
    display: flex;
    flex-direction: column;
    gap: 16px;
}

[hidden] { display: none !important; }

/* ---------- setup ---------- */

.brand { text-align: center; margin: 24px 0 8px; }
.brand-potato { font-size: 84px; line-height: 1; animation: wobble 2.4s ease-in-out infinite; }
.brand h1 { margin: 12px 0 4px; font-size: 2rem; letter-spacing: -0.02em; }
.tagline { margin: 0; color: var(--muted); }

.field { display: flex; flex-direction: column; gap: 6px; }
.field span { color: var(--muted); font-size: 0.9rem; }

input {
    font: inherit;
    color: var(--fg);
    background: var(--panel);
    border: 2px solid var(--panel-2);
    border-radius: 12px;
    padding: 14px;
    width: 100%;
    user-select: text;
    -webkit-user-select: text;
}
input:focus { outline: none; border-color: var(--accent); }

.btn {
    font: inherit;
    font-weight: 700;
    color: var(--fg);
    background: var(--panel-2);
    border: none;
    border-radius: 12px;
    padding: 14px 18px;
    cursor: pointer;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-ghost { background: transparent; border: 2px solid var(--panel-2); }
.btn-small { padding: 8px 12px; font-size: 0.9rem; }

.divider { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 0.85rem; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--panel-2); }

.code-row { display: flex; gap: 8px; }
.code-row input { text-transform: uppercase; letter-spacing: 0.2em; font-weight: 700; text-align: center; min-width: 0; }

.error { color: var(--hot); margin: 0; text-align: center; }
.hint { color: var(--muted); font-size: 0.85rem; text-align: center; margin-top: auto; }

/* ---------- room ---------- */

.room-bar { display: flex; align-items: center; gap: 8px; }
.room-label { flex: 1; font-weight: 700; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.stage {
    background: var(--panel);
    border-radius: var(--radius);
    padding: 24px 16px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: background 0.3s;
}
.stage h2 { margin: 4px 0 0; font-size: 1.5rem; }
.stage p { margin: 0; color: var(--muted); }

.potato { font-size: 96px; line-height: 1; filter: grayscale(0.6) opacity(0.5); transition: filter 0.3s; }

/* Holding: the whole screen heats up and the potato shakes harder as the fuse burns. */
body.holding { background: color-mix(in srgb, var(--hot) calc(var(--heat) * 55%), var(--bg)); }
body.holding .stage { background: color-mix(in srgb, var(--hot) calc(20% + var(--heat) * 40%), var(--panel)); }
body.holding .potato {
    filter: none;
    font-size: 132px;
    animation: shake calc(0.4s - var(--heat) * 0.3s) linear infinite;
}
body.holding .stage h2 { color: #fff; }
body.holding .stage p { color: #ffe3d6; }
body.tick .potato { transform: scale(1.08); }

body.boom-me { animation: flash 0.9s ease-out; }
.stage.boom .potato { filter: none; animation: pop 0.6s ease-out; }

.pass-hint { margin: 0; text-align: center; color: var(--muted); min-height: 1.45em; }

.players {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
}

.player {
    font: inherit;
    color: var(--fg);
    background: var(--panel);
    border: 2px solid var(--panel-2);
    border-radius: var(--radius);
    padding: 16px 12px;
    min-height: 92px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    text-align: center;
    cursor: default;
}
.player-name { font-weight: 800; font-size: 1.1rem; word-break: break-word; }
.player-meta { font-size: 0.8rem; color: var(--muted); display: flex; gap: 6px; align-items: center; flex-wrap: wrap; justify-content: center; }
.player.can-pass { cursor: pointer; border-color: var(--accent); background: var(--panel-2); }
.player.can-pass:active { transform: scale(0.96); background: var(--accent); color: var(--accent-ink); }
.player.can-pass:active .player-meta { color: var(--accent-ink); }
.player.no-pass { opacity: 0.4; }
.player.lost { border-color: var(--hot); }

.badge { padding: 1px 6px; border-radius: 6px; background: var(--panel-2); font-weight: 700; font-size: 0.7rem; letter-spacing: 0.04em; }
.badge.lan { color: var(--ok); }
.badge.relay { color: var(--accent); }

.me { text-align: center; color: var(--muted); font-size: 0.9rem; margin-top: auto; }

@keyframes wobble { 0%, 100% { transform: rotate(-6deg); } 50% { transform: rotate(6deg); } }
@keyframes shake {
    0% { transform: translate(0, 0) rotate(0); }
    25% { transform: translate(calc(var(--heat) * 8px + 2px), -2px) rotate(calc(var(--heat) * 10deg + 3deg)); }
    50% { transform: translate(0, 2px) rotate(0); }
    75% { transform: translate(calc(var(--heat) * -8px - 2px), -1px) rotate(calc(var(--heat) * -10deg - 3deg)); }
    100% { transform: translate(0, 0) rotate(0); }
}
@keyframes flash { 0% { background: #fff; } 30% { background: var(--hot); } 100% { background: var(--bg); } }
@keyframes pop { 0% { transform: scale(0.4); } 60% { transform: scale(1.3); } 100% { transform: scale(1); } }

@media (prefers-reduced-motion: reduce) {
    .brand-potato, body.holding .potato { animation: none; }
}