:root {
  --bg: #faf7f2;
  --surface: #ffffff;
  --surface-2: #f3eee6;
  --text: #1f1b16;
  --muted: #6b6258;
  --line: #e6ded2;
  --accent: #c2410c;
  --accent-ink: #ffffff;
  --accent-soft: #fbe6da;
  --good: #1f8a4c;
  --good-soft: #dcf2e4;
  --bad: #c0392b;
  --bad-soft: #f9dfdb;
  --warn: #9a6700;
  --warn-soft: #fff1c9;
  --o0: #e0533d;
  --o1: #2f6fde;
  --o2: #c98a00;
  --o3: #23935a;
  --o4: #8a4fd8;
  --code-bg: #2a2520;
  --code-ink: #f7efe6;
  --shadow: 0 1px 2px rgba(40, 30, 20, .06), 0 4px 16px rgba(40, 30, 20, .06);
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #161412; --surface: #211e1a; --surface-2: #2b2722; --text: #f3eee7; --muted: #a89f94; --line: #3a342d;
    --accent: #f08a5d; --accent-ink: #1a0f08; --accent-soft: #3d2618; --good: #4cc983; --good-soft: #17301f;
    --bad: #ff7a6b; --bad-soft: #3a1c18; --warn: #f2c14e; --warn-soft: #3a2f12; --code-bg: #0f0d0b; --code-ink: #f3eee7;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #161412; --surface: #211e1a; --surface-2: #2b2722; --text: #f3eee7; --muted: #a89f94; --line: #3a342d;
  --accent: #f08a5d; --accent-ink: #1a0f08; --accent-soft: #3d2618; --good: #4cc983; --good-soft: #17301f;
  --bad: #ff7a6b; --bad-soft: #3a1c18; --warn: #f2c14e; --warn-soft: #3a2f12; --code-bg: #0f0d0b; --code-ink: #f3eee7;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5rem; letter-spacing: -.01em; }
h1 { font-size: 1.6rem; } h2 { font-size: 1.3rem; } h3 { font-size: 1.05rem; }
p { margin: 0 0 .75rem; }
a { color: var(--accent); }
button, input, textarea, select { font: inherit; color: inherit; }
pre, code, .mono { font-family: ui-monospace, "Cascadia Code", Consolas, "SF Mono", Menlo, monospace; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.center { text-align: center; }
.hidden { display: none !important; }
.row { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.stack > * + * { margin-top: .75rem; }

.wrap { max-width: 760px; margin: 0 auto; padding: 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.card + .card { margin-top: 12px; }
.section-title { font-size: .8rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin: 20px 0 8px; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  min-height: 44px; padding: .55rem 1rem; border-radius: 10px; border: 1px solid var(--line);
  background: var(--surface); cursor: pointer; font-weight: 600; text-decoration: none; color: var(--text);
  transition: transform .06s ease, background .15s ease, border-color .15s;
}
.btn:hover { border-color: var(--muted); }
.btn:active { transform: scale(.98); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.05); border-color: var(--accent); }
.btn-ghost { background: transparent; border-color: transparent; }
.btn-sm { min-height: 34px; padding: .3rem .7rem; font-size: .875rem; border-radius: 8px; }
.btn-danger { color: var(--bad); }
.btn-block { width: 100%; }
.btn.on { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }

input[type=text], input[type=number], input[type=password], textarea {
  width: 100%; padding: .7rem .8rem; border: 1px solid var(--line); border-radius: 10px;
  background: var(--surface); outline: none; min-height: 44px;
}
textarea { resize: vertical; min-height: 96px; line-height: 1.45; }
input:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
label.field { display: block; font-weight: 600; font-size: .9rem; margin-bottom: .3rem; }
label.field .muted { font-weight: 400; }

.chip {
  display: inline-flex; align-items: center; gap: .3rem; padding: .15rem .55rem; border-radius: 999px;
  background: var(--surface-2); color: var(--muted); font-size: .78rem; font-weight: 600; white-space: nowrap;
}
.chip.live { background: var(--bad); color: #fff; }
.chip.live::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #fff; animation: pulse 1.2s infinite; }
.chip.good { background: var(--good-soft); color: var(--good); }
.chip.accent { background: var(--accent-soft); color: var(--accent); }
@keyframes pulse { 50% { opacity: .3; } }

/* code / prompt box */
.codebox { position: relative; background: var(--code-bg); color: var(--code-ink); border-radius: 12px; margin: .5rem 0 .75rem; }
.codebox pre { margin: 0; padding: 14px 16px; white-space: pre-wrap; word-break: break-word; font-size: .9rem; line-height: 1.5; }
.codebox .copy {
  position: absolute; top: 6px; right: 6px; min-height: 30px; padding: .2rem .6rem; font-size: .78rem;
  border-radius: 7px; border: 1px solid rgba(255, 255, 255, .2); background: rgba(255, 255, 255, .08); color: var(--code-ink); cursor: pointer;
}
.codebox.has-copy pre { padding-top: 40px; }
.codebox .label { position: absolute; top: 12px; left: 16px; font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; opacity: .6; font-family: system-ui, sans-serif; }

/* quiz options */
.opts { display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 560px) { .opts { grid-template-columns: 1fr 1fr; } }
.opt {
  display: flex; align-items: center; gap: .75rem; width: 100%; min-height: 64px; padding: .8rem 1rem;
  border: 0; border-radius: 12px; color: #fff; font-weight: 700; text-align: left; cursor: pointer; line-height: 1.3;
  box-shadow: inset 0 -4px 0 rgba(0, 0, 0, .18); transition: transform .06s, filter .15s, opacity .2s;
}
.opt:active { transform: translateY(2px); box-shadow: inset 0 -2px 0 rgba(0, 0, 0, .18); }
.opt:hover { filter: brightness(1.06); }
.opt .shape { font-size: 1.25rem; width: 1.5rem; text-align: center; flex: none; }
.opt.c0 { background: var(--o0); } .opt.c1 { background: var(--o1); } .opt.c2 { background: var(--o2); } .opt.c3 { background: var(--o3); } .opt.c4 { background: var(--o4); }
.opt.dim { opacity: .35; }
.opt.picked { outline: 3px solid var(--text); outline-offset: 2px; }
.opt[disabled] { cursor: default; }
.opts.vote { grid-template-columns: 1fr 1fr; }
.opts.vote .opt { min-height: 88px; justify-content: center; font-size: 1.15rem; }

/* result bars */
.bars { display: grid; gap: 8px; }
.bar { display: grid; grid-template-columns: 1.6rem 1fr auto; align-items: center; gap: .6rem; }
.bar .shape { text-align: center; font-weight: 700; }
.bar .track { position: relative; background: var(--surface-2); border-radius: 8px; min-height: 38px; overflow: hidden; }
.bar .fill { position: absolute; inset: 0 auto 0 0; border-radius: 8px; transition: width .5s cubic-bezier(.2, .8, .2, 1); opacity: .3; }
.bar.right .fill { opacity: .55; }
.bar .lbl { position: relative; padding: .45rem .7rem; font-weight: 600; font-size: .92rem; line-height: 1.3; }
.bar .num { font-variant-numeric: tabular-nums; font-weight: 700; min-width: 2.5rem; text-align: right; }
.bar.c0 .fill { background: var(--o0); } .bar.c1 .fill { background: var(--o1); } .bar.c2 .fill { background: var(--o2); } .bar.c3 .fill { background: var(--o3); } .bar.c4 .fill { background: var(--o4); }
.bar.c0 .shape { color: var(--o0); } .bar.c1 .shape { color: var(--o1); } .bar.c2 .shape { color: var(--o2); } .bar.c3 .shape { color: var(--o3); } .bar.c4 .shape { color: var(--o4); }
.bar .fill ~ .lbl { color: var(--text); }
.bar.wrong { opacity: .45; }
.bar.right .lbl::after { content: "  ✓"; color: var(--good); font-weight: 800; }

/* timer */
.timer { display: inline-flex; align-items: center; gap: .5rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.timer .ring { --p: 1; width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center;
  background: conic-gradient(var(--accent) calc(var(--p) * 360deg), var(--surface-2) 0); }
.timer .ring span { width: 32px; height: 32px; border-radius: 50%; background: var(--surface); display: grid; place-items: center; font-size: .9rem; }
.timer.low .ring { background: conic-gradient(var(--bad) calc(var(--p) * 360deg), var(--surface-2) 0); }

/* wall (text / builder entries) */
.wall { display: grid; gap: 10px; }
@media (min-width: 900px) { .wall.cols { grid-template-columns: repeat(2, 1fr); } }
.entry { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; }
.entry .who { display: flex; align-items: center; gap: .4rem; font-size: .85rem; color: var(--muted); font-weight: 600; margin-bottom: .35rem; }
.entry .txt { white-space: pre-wrap; word-break: break-word; }
.entry .txt.prompt { font-family: ui-monospace, Consolas, monospace; font-size: .86rem; background: var(--surface-2); padding: 10px 12px; border-radius: 8px; }
.entry .acts { display: flex; gap: .4rem; margin-top: .5rem; flex-wrap: wrap; }
.entry.spot { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
.heart { min-height: 32px; padding: .15rem .6rem; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); cursor: pointer; font-weight: 700; font-size: .85rem; }
.heart.on { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.heart[disabled] { cursor: default; opacity: .7; }

/* word cloud */
.cloud { display: flex; flex-wrap: wrap; gap: .35rem .9rem; justify-content: center; align-items: center; padding: 12px 4px; }
.cloud span { font-weight: 800; line-height: 1.1; }
.cloud span:nth-child(5n+1) { color: var(--o0); } .cloud span:nth-child(5n+2) { color: var(--o1); } .cloud span:nth-child(5n+3) { color: var(--o2); }
.cloud span:nth-child(5n+4) { color: var(--o3); } .cloud span:nth-child(5n) { color: var(--o4); }

/* checklist */
.checks { display: grid; gap: 8px; }
.check { display: flex; gap: .7rem; align-items: flex-start; padding: .7rem .8rem; border: 1px solid var(--line); border-radius: 10px; cursor: pointer; background: var(--surface); }
.check input { width: 22px; height: 22px; margin: 1px 0 0; accent-color: var(--accent); flex: none; }
.check:has(input:checked) { background: var(--good-soft); border-color: transparent; }

.progress { height: 10px; border-radius: 99px; background: var(--surface-2); overflow: hidden; }
.progress > i { display: block; height: 100%; background: var(--good); border-radius: 99px; transition: width .4s; }

/* banners */
.banner { padding: .8rem 1rem; border-radius: 12px; font-weight: 600; }
.banner.good { background: var(--good-soft); color: var(--good); }
.banner.bad { background: var(--bad-soft); color: var(--bad); }
.banner.warn { background: var(--warn-soft); color: var(--warn); }
.banner.info { background: var(--accent-soft); color: var(--accent); }
.flags { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .4rem; }
.flags .chip { background: var(--warn-soft); color: var(--warn); }
.flags.ok .chip { background: var(--good-soft); color: var(--good); }

.files { display: flex; flex-wrap: wrap; gap: .5rem; margin: .5rem 0 .75rem; }
.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.steps li { counter-increment: s; position: relative; padding: 12px 14px 12px 52px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; }
.steps li::before { content: counter(s); position: absolute; left: 14px; top: 12px; width: 26px; height: 26px; border-radius: 50%; background: var(--accent); color: var(--accent-ink); display: grid; place-items: center; font-weight: 800; font-size: .85rem; }
details.tip { border: 1px solid var(--line); border-radius: 10px; padding: .6rem .8rem; background: var(--surface); }
details.tip + details.tip { margin-top: 8px; }
details.tip summary { cursor: pointer; font-weight: 700; }

.toast {
  position: fixed; left: 50%; bottom: 88px; transform: translateX(-50%) translateY(20px); opacity: 0; pointer-events: none;
  background: var(--text); color: var(--bg); padding: .6rem 1rem; border-radius: 10px; font-weight: 600; z-index: 50;
  transition: opacity .2s, transform .2s; max-width: calc(100vw - 32px); text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.err { background: var(--bad); color: #fff; }

.avatar { font-size: 1.2em; line-height: 1; }
.big-emoji { font-size: 3.5rem; line-height: 1; }
.brand { display: inline-flex; align-items: center; gap: .5rem; font-weight: 800; letter-spacing: -.01em; }
.brand .logo { width: 30px; height: 30px; border-radius: 9px; background: var(--accent); color: var(--accent-ink); display: grid; place-items: center; font-size: 1rem; }
.status-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--good); display: inline-block; }
.status-dot.off { background: var(--bad); }

.big-number { font-size: 3.2rem; font-weight: 800; line-height: 1.1; font-variant-numeric: tabular-nums; }

/* ---------------- participant app ---------------- */
.topbar { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.topbar .wrap { padding-top: 10px; padding-bottom: 10px; }
.me { display: inline-flex; align-items: center; gap: .45rem; font-weight: 700; font-size: .92rem; }
.me .pts { background: var(--accent-soft); color: var(--accent); border-radius: 999px; padding: .1rem .6rem; font-variant-numeric: tabular-nums; }
main.has-tabs { padding-bottom: 96px; }
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20; display: flex; justify-content: center; gap: 4px;
  background: var(--surface); border-top: 1px solid var(--line); padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
}
.tabbar button {
  position: relative; flex: 1; max-width: 200px; display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 6px 4px;
  background: none; border: 0; border-radius: 10px; cursor: pointer; font-size: .75rem; font-weight: 700; color: var(--muted);
}
.tabbar button .ic { font-size: 1.25rem; line-height: 1; }
.tabbar button.on { color: var(--accent); background: var(--accent-soft); }
.tabbar button .dot { position: absolute; top: 4px; right: calc(50% - 20px); width: 9px; height: 9px; border-radius: 50%; background: var(--bad); border: 2px solid var(--surface); }
.lobby { text-align: center; padding: 6vh 0 2vh; }
.lobby .big-emoji { font-size: 4.5rem; animation: bob 2.4s ease-in-out infinite; }
@keyframes bob { 50% { transform: translateY(-6px); } }
.lb { display: grid; gap: 6px; }
.lb-row { display: grid; grid-template-columns: 2.2rem 1.8rem 1fr auto; align-items: center; gap: .5rem; padding: .55rem .8rem; border-radius: 10px; background: var(--surface); border: 1px solid var(--line); }
.lb-row.me-row { border-color: var(--accent); background: var(--accent-soft); }
.lb-row .rk { font-weight: 800; color: var(--muted); text-align: center; }
.lb-row .sc { font-weight: 800; font-variant-numeric: tabular-nums; }
.session { display: grid; grid-template-columns: auto 1fr; gap: .25rem .8rem; align-items: start; }
.session .num { width: 40px; height: 40px; border-radius: 12px; background: var(--accent); color: var(--accent-ink); display: grid; place-items: center; font-weight: 800; grid-row: span 3; }
.session.locked { opacity: .62; }
.session.locked .num { background: var(--surface-2); color: var(--muted); }
.act-row { display: flex; align-items: center; gap: .6rem; width: 100%; padding: .65rem .2rem; background: none; border: 0; border-top: 1px solid var(--line); text-align: left; cursor: pointer; }
.act-row:first-of-type { border-top: 0; }
.act-row .t { flex: 1; font-weight: 600; }
.act-row .ic { width: 1.6rem; text-align: center; }
.back { margin-bottom: 8px; }
.form-warn { margin-top: .5rem; }
.grid-2 { display: grid; gap: 12px; }
@media (min-width: 640px) { .grid-2 { grid-template-columns: 1fr 1fr; } }
ul.goals { margin: 0; padding-left: 1.2rem; }
ul.goals li + li { margin-top: .25rem; }
ol.rules { margin: 0; padding-left: 1.2rem; }
ol.rules li + li { margin-top: .4rem; }
@media (max-width: 400px) { .brand-text { display: none; } }

/* ---------------- host ---------------- */
.wrap-wide { max-width: 1320px; margin: 0 auto; padding: 16px; }
.host-grid { display: grid; gap: 16px; align-items: start; }
@media (min-width: 980px) { .host-grid { grid-template-columns: 360px 1fr; } .host-grid aside { position: sticky; top: 72px; max-height: calc(100vh - 88px); overflow: auto; padding-right: 4px; } }
.host-grid aside .section-title { margin-top: 14px; }
.host-grid aside .card { padding: 6px 12px; }
.act-row.sel { background: var(--accent-soft); border-radius: 8px; margin: 0 -6px; padding-left: calc(.2rem + 6px); padding-right: 6px; width: calc(100% + 12px); }
.controls { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 4px; }
.answer-key { margin: .5rem 0 0; padding-left: 1.2rem; }
.answer-key li.right { color: var(--good); font-weight: 700; }
.ptable { width: 100%; border-collapse: collapse; font-size: .92rem; }
.ptable td, .ptable th { padding: .45rem .4rem; border-top: 1px solid var(--line); text-align: left; }
.ptable th { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; border-top: 0; }
.host-bottom { display: grid; gap: 16px; }
@media (min-width: 980px) { .host-bottom { grid-template-columns: 1.4fr 1fr; } }
.lock-row { display: flex; align-items: center; gap: .6rem; padding: .45rem 0; border-top: 1px solid var(--line); }
.lock-row:first-of-type { border-top: 0; }

/* ---------------- projector screen ---------------- */
body.screen { font-size: clamp(16px, 1.35vw, 30px); min-height: 100vh; display: flex; flex-direction: column; }
.screen-top { display: flex; align-items: center; gap: 1rem; padding: .8rem 1.4rem; border-bottom: 1px solid var(--line); background: var(--surface); }
.screen-top .join { font-weight: 700; }
.screen-top .join b { color: var(--accent); }
.screen-main { flex: 1; padding: 1.4rem 2rem 2rem; max-width: 1600px; width: 100%; margin: 0 auto; }
.screen-main h1 { font-size: 2.2em; }
.screen-main h2 { font-size: 1.8em; }
.screen .codebox pre { font-size: 1em; }
.screen .opt { min-height: 4.2em; font-size: 1.1em; cursor: default; }
.screen .bar .track { min-height: 2.6em; }
.screen .bar .lbl { font-size: 1em; }
.screen .timer .ring { width: 3.2em; height: 3.2em; }
.screen .timer .ring span { width: 2.6em; height: 2.6em; font-size: 1.1em; }
.screen .steps li { font-size: 1.05em; }
.screen .entry .txt { font-size: 1.05em; }
.screen-lobby { display: grid; gap: 2rem; align-items: center; min-height: 70vh; }
@media (min-width: 900px) { .screen-lobby { grid-template-columns: 1fr 1.2fr; } }
.qr { background: #fff; padding: 14px; border-radius: 16px; width: min(320px, 70vw); aspect-ratio: 1; margin: 1rem 0; }
.qr svg { width: 100%; height: 100%; display: block; }
.url-big { font-size: 1.8em; font-weight: 800; color: var(--accent); word-break: break-all; }
.people { display: flex; flex-wrap: wrap; gap: .5rem; }
.people span { background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: .3rem .8rem; font-weight: 700; animation: pop .35s ease-out; }
@keyframes pop { from { transform: scale(.6); opacity: 0; } }
.answered-big { font-size: 2.6em; font-weight: 800; font-variant-numeric: tabular-nums; }
.podium { display: flex; align-items: flex-end; justify-content: center; gap: 1rem; margin: 1rem 0 2rem; }
.podium .p { text-align: center; width: min(14em, 28vw); }
.podium .p .blk { border-radius: 14px 14px 0 0; background: var(--accent); color: var(--accent-ink); font-size: 2em; font-weight: 800; display: grid; place-items: center; }
.podium .p:nth-child(1) .blk { height: 5em; opacity: .8; } .podium .p:nth-child(2) .blk { height: 7em; } .podium .p:nth-child(3) .blk { height: 3.6em; opacity: .65; }
.podium .nm { font-weight: 800; font-size: 1.15em; margin: .3rem 0; }
.spotlight { position: fixed; inset: 0; z-index: 40; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(6px); display: grid; place-items: center; padding: 4vh 4vw; }
.spotlight .card { max-width: 1100px; width: 100%; max-height: 90vh; overflow: auto; font-size: 1.25em; }
.spotlight .txt { white-space: pre-wrap; word-break: break-word; }
.spotlight .txt.prompt { font-family: ui-monospace, Consolas, monospace; background: var(--surface-2); padding: 1rem 1.2rem; border-radius: 12px; font-size: .9em; }
@media (max-width: 979px) { .host-grid #stage { order: -1; } }