:root {
  --bg: #f5f6fa;
  --surface: #ffffff;
  --surface-2: #eef0f6;
  --text: #1a1e2b;
  --muted: #687083;
  --border: #e0e3ec;
  --accent: #4f46e5;
  --accent-soft: #eceafe;
  --on-accent: #ffffff;
  --danger: #dc2626;
  --ok: #15803d;
  --ok-soft: #dcfce7;
  --bad-soft: #fee2e2;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 6px 20px rgba(16, 24, 40, .06);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1117;
    --surface: #181b24;
    --surface-2: #232736;
    --text: #e7e9f0;
    --muted: #9aa1b4;
    --border: #2c3142;
    --accent: #8b8cf8;
    --accent-soft: #2a2b4d;
    --on-accent: #0f1117;
    --danger: #f87171;
    --ok: #4ade80;
    --ok-soft: #14321f;
    --bad-soft: #3b1717;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.45; }
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; }
h3 { font-size: 1rem; }
[hidden] { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.center { text-align: center; }
.grow { flex: 1 1 auto; min-width: 0; }
.ellipsis { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.row.center { justify-content: center; }
.empty { color: var(--muted); text-align: center; padding: 2rem 1rem; margin: 0; }

/* ---------- controls */
input[type=text], input[type=url], input[type=number], input:not([type]), textarea {
  font: inherit; color: inherit; background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: .55rem .7rem; width: 100%;
}
input[type=number] { width: 5rem; }
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
textarea { resize: vertical; }
input[type=checkbox] { accent-color: var(--accent); width: 1.05rem; height: 1.05rem; margin: 0; }

.btn {
  font: inherit; font-weight: 600; font-size: .92rem; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 8px; padding: .5rem .85rem; cursor: pointer;
  text-decoration: none; display: inline-flex; align-items: center; gap: .35rem; white-space: nowrap;
}
.btn:hover:not(:disabled) { background: var(--surface-2); }
.btn:disabled { opacity: .45; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn.primary:hover:not(:disabled) { filter: brightness(1.08); background: var(--accent); }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.danger:hover:not(:disabled) { background: var(--danger); filter: brightness(1.08); }
.btn.danger-outline { color: var(--danger); }
.btn.small { font-size: .8rem; padding: .35rem .6rem; }
.btn.big { font-size: 1.05rem; padding: .8rem 1.2rem; width: 100%; justify-content: center; margin-top: .75rem; }
.btn.icon { padding: .4rem .6rem; }
.check { display: inline-flex; align-items: center; gap: .4rem; cursor: pointer; font-size: .92rem; }

.chip {
  display: inline-flex; align-items: center; gap: .3rem; background: var(--accent-soft); color: var(--text);
  border: 0; border-radius: 99px; padding: .3rem .7rem; font: inherit; font-size: .9rem; margin: 0 .3rem .3rem 0;
}
.chip button, button.chip { cursor: pointer; }
.chip button { border: 0; background: none; color: var(--muted); font-size: 1.1rem; line-height: 1; padding: 0; cursor: pointer; }
.badge { background: #fef3c7; color: #92400e; border-radius: 99px; padding: .2rem .6rem; font-size: .75rem; font-weight: 600; white-space: nowrap; }
.code-chip { font-family: ui-monospace, Consolas, monospace; font-weight: 700; letter-spacing: .08em; background: var(--surface-2); border-radius: 6px; padding: .15rem .45rem; font-size: .85rem; }

.toast {
  position: fixed; left: 50%; bottom: 1.5rem; transform: translate(-50%, 2rem); opacity: 0; pointer-events: none;
  background: #1f2433; color: #fff; padding: .65rem 1rem; border-radius: 10px; transition: .2s; z-index: 50; max-width: 90vw;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.25rem; }
.card.narrow { max-width: 560px; margin: 2rem auto; }
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; min-width: 0; }

/* ---------- top bar & logo */
.topbar { display: flex; align-items: center; gap: .75rem; padding: .6rem 1rem; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.logo { font-weight: 800; letter-spacing: -.02em; text-decoration: none; color: var(--text); font-size: 2.4rem; margin: 0 0 1rem; }
.logo span { color: var(--accent); }
.logo.small { font-size: 1.2rem; margin: 0; }
.title-input { font-weight: 700; font-size: 1.05rem; border-color: transparent !important; background: transparent !important; max-width: 520px; }
.title-input:hover { background: var(--surface-2) !important; }

/* ---------- landing */
.center-page { min-height: 100vh; display: grid; place-items: center; padding: 1rem; }
.landing { text-align: center; width: 100%; }
.landing label { display: block; font-weight: 600; margin-bottom: .5rem; }
.code-input { text-align: center; font-size: 1.8rem !important; font-weight: 700; letter-spacing: .25em; text-transform: uppercase; font-family: ui-monospace, Consolas, monospace !important; }

/* ---------- host */
.host-main { padding: 1rem; }
.host-grid { display: grid; grid-template-columns: 330px 1fr; gap: 1rem; align-items: start; max-width: 1400px; margin: 0 auto; }
@media (max-width: 860px) { .host-grid { grid-template-columns: 1fr; } }
.session-box { text-align: center; padding-bottom: 1rem; margin-bottom: 1rem; border-bottom: 1px solid var(--border); }
.code-big { font-family: ui-monospace, Consolas, monospace; font-size: 2.2rem; font-weight: 800; letter-spacing: .15em; margin: .1rem 0 .4rem; }
.qr { width: 140px; height: 140px; image-rendering: pixelated; display: block; margin: 0 auto .6rem; border-radius: 6px; background: #fff; }
.qlist { list-style: none; padding: 0; margin: 0 0 .75rem; display: flex; flex-direction: column; gap: .3rem; }
.qitem { display: flex; align-items: center; gap: .5rem; padding: .5rem .6rem; border-radius: 8px; cursor: pointer; border: 1px solid transparent; }
.qitem:hover { background: var(--surface-2); }
.qitem.sel { background: var(--accent-soft); border-color: var(--accent); }
.qnum { color: var(--muted); font-size: .8rem; width: 1.2rem; text-align: right; }
.qprompt { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: .92rem; }
.qcount { font-size: .75rem; color: var(--muted); background: var(--surface-2); border-radius: 99px; padding: .05rem .45rem; }
.qitem.live .qcount { background: var(--danger); color: #fff; }
.qitem.live .qnum::before { content: "●"; color: var(--danger); margin-right: .1rem; animation: blink 1.4s infinite; }
@keyframes blink { 50% { opacity: .2; } }
.add-row { display: flex; flex-wrap: wrap; gap: .35rem; }
.side-foot { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.side-foot .row + h3 { margin-top: 1rem; }
.mode-box { padding-bottom: 1rem; margin-bottom: 1rem; border-bottom: 1px solid var(--border); }
.mode-box p { margin: .4rem 0 .6rem; }
.sess-list { list-style: none; padding: 0; margin: 0; }
.sess-list li { display: flex; justify-content: space-between; align-items: center; gap: .5rem; padding: .55rem 0; border-bottom: 1px solid var(--border); }
.sess-list a { display: flex; gap: .6rem; align-items: center; text-decoration: none; color: var(--text); }

.editor { display: flex; flex-direction: column; gap: .8rem; }
.editor-type { font-size: .8rem; font-weight: 700; color: var(--accent); text-transform: uppercase; letter-spacing: .05em; }
#ePrompt { font-size: 1.25rem; font-weight: 600; }
.field .label { font-weight: 600; font-size: .9rem; margin-bottom: .4rem; }
.field.inline { display: flex; align-items: center; gap: .6rem; font-weight: 600; font-size: .9rem; }
.opt-row { display: flex; gap: .5rem; align-items: center; margin-bottom: .4rem; }
.empty-state { text-align: center; padding: 2rem 1rem; }
.controls { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin: 1rem 0 .5rem; padding: .75rem 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.results-head { display: flex; align-items: baseline; gap: .6rem; margin-top: 1rem; }
.results-head h3 { margin: 0; }
.host-results { --cloud-h: 380px; background: var(--surface-2); border-radius: 10px; padding: 1rem; min-height: 120px; }
.host-results[data-kind="wordcloud"] { padding: 0; }

/* ---------- results (shared) */
.results[data-kind="wordcloud"] { position: relative; height: var(--cloud-h, 320px); overflow: hidden; }
.bars { display: flex; flex-direction: column; gap: .8rem; }
.bar-label { display: flex; justify-content: space-between; gap: 1rem; margin-bottom: .25rem; font-size: .95rem; }
.bar-value { color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.bar-track { height: 1.6rem; background: color-mix(in srgb, var(--muted) 15%, transparent); border-radius: 6px; overflow: hidden; }
.bar-fill { height: 100%; width: 0; background: var(--c, var(--accent)); border-radius: 6px; transition: width .5s cubic-bezier(.2, .8, .2, 1); }
.bar-row.wrong { opacity: .45; }
.bar-row.correct .bar-fill { background: #22c55e; }
.bar-row.correct .bar-text::after { content: " ✓"; color: #22c55e; font-weight: 800; }
.opt-letter { display: inline-grid; place-items: center; min-width: 1.6em; height: 1.6em; border-radius: 6px; background: var(--surface-2); font-weight: 700; font-size: .85em; }
.bar-label .opt-letter { background: transparent; min-width: auto; color: var(--muted); }

.cloud { position: absolute; inset: 0; }
.word { position: absolute; line-height: 1; white-space: nowrap; font-weight: 700; padding: 0 .1em; transition: left .4s, top .4s, font-size .4s; }
.cloud.moderatable .word { cursor: pointer; }
.cloud.moderatable .word:hover { text-decoration: line-through; opacity: .6; }

.pin-stage { text-align: center; }
.pin-wrap { position: relative; display: inline-block; max-width: 100%; vertical-align: top; user-select: none; -webkit-user-select: none; }
.pin-wrap img { display: block; max-width: 100%; max-height: var(--pin-max-h, 65vh); border-radius: 8px; }
.pin-wrap.tappable { cursor: crosshair; }
.pin-wrap canvas.heat, .pin-wrap .pins { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.pin {
  position: absolute; width: 14px; height: 14px; margin: -7px 0 0 -7px; border-radius: 50%;
  background: rgba(239, 68, 68, .7); border: 2px solid #fff; box-shadow: 0 1px 3px rgba(0, 0, 0, .4); pointer-events: none;
}
.pin.mine { width: 22px; height: 22px; margin: -11px 0 0 -11px; background: var(--accent); border-width: 3px; }
.pin.mine.draft { background: #f59e0b; animation: pop .25s; }
@keyframes pop { from { transform: scale(.3); } }

/* ---------- participant */
.join-main { max-width: 640px; margin: 0 auto; padding: 1rem; display: flex; flex-direction: column; gap: 1rem; }
.prompt { font-size: 1.4rem; }
.opts { display: flex; flex-direction: column; gap: .55rem; }
.opt {
  display: flex; align-items: center; gap: .75rem; text-align: left; font: inherit; font-size: 1.05rem; color: var(--text);
  background: var(--surface); border: 2px solid var(--border); border-radius: 10px; padding: .8rem .9rem; cursor: pointer;
}
.opt:hover:not(:disabled) { border-color: var(--accent); }
.opt.selected { border-color: var(--accent); background: var(--accent-soft); }
.opt.selected .opt-letter { background: var(--accent); color: var(--on-accent); }
.opt.correct { border-color: #22c55e; }
.opt:disabled { cursor: default; }
.status { margin: .9rem 0 0; font-weight: 600; padding: .55rem .8rem; border-radius: 8px; }
.status.ok { background: var(--ok-soft); color: var(--ok); }
.status.bad { background: var(--bad-soft); color: var(--danger); }
.status.closed { background: var(--surface-2); color: var(--muted); }
.chips { margin: .3rem 0 .8rem; }
.waiting { text-align: center; padding: 2.5rem 0; }
.pulse { width: 18px; height: 18px; border-radius: 50%; background: var(--accent); margin: 0 auto 1.2rem; animation: pulse 1.6s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 60%, transparent); } 100% { box-shadow: 0 0 0 22px transparent; } }
.join-results { --cloud-h: 300px; --pin-max-h: 50vh; }
.pager { display: flex; align-items: center; gap: .75rem; padding: .75rem; }
.pager-mid { flex: 1; min-width: 0; text-align: center; }
.dots { display: flex; flex-wrap: wrap; justify-content: center; gap: .35rem; margin-top: .4rem; }
.dot { width: 14px; height: 14px; padding: 0; border-radius: 50%; border: 2px solid var(--border); background: var(--surface); cursor: pointer; }
.dot.done { background: var(--accent); border-color: var(--accent); }
.dot.closed:not(.done) { background: var(--surface-2); }
.dot.cur { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- presenter */
body.present { overflow: hidden; }
.present-app { height: 100vh; display: flex; flex-direction: column; }
.present-bar { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .8rem 1.5rem; font-size: 1.3rem; background: var(--surface); border-bottom: 1px solid var(--border); }
.present-bar .code { font-family: ui-monospace, Consolas, monospace; letter-spacing: .12em; color: var(--accent); font-size: 1.15em; }
.present-bar .count { color: var(--muted); font-variant-numeric: tabular-nums; }
.stage { flex: 1; min-height: 0; display: flex; flex-direction: column; padding: 2rem 3rem 1.5rem; }
.stage:has(.present-results) { padding-bottom: 145px; }
.p-prompt { font-size: clamp(1.6rem, 3.6vw, 3.2rem); margin-bottom: 1.5rem; }
.present-results { flex: 1; min-height: 0; --pin-max-h: calc(100vh - 360px); font-size: clamp(1rem, 1.7vw, 1.6rem); }
.present-results[data-kind="wordcloud"] { height: auto; }
.present-results .bar-track { height: 2.2em; }
.present-results .bars { gap: 1.1em; }
.opt-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 1rem; }
.opt-tile { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1.1em; display: flex; gap: .8em; align-items: center; }
.placeholder { text-align: center; font-size: 4rem; color: var(--muted); padding-top: 8vh; }
.placeholder p { font-size: 1.8rem; }
.present-lobby { text-align: center; margin: auto; }
.present-lobby h1 { font-size: clamp(2rem, 4vw, 3.5rem); }
.present-lobby p { font-size: 1.6rem; margin: 0; }
.present-lobby p.muted { margin-top: 1rem; }
.code-huge { font-family: ui-monospace, Consolas, monospace; font-size: clamp(4rem, 11vw, 9rem); font-weight: 800; letter-spacing: .15em; color: var(--accent); line-height: 1.1; }
.qr-big { width: min(32vh, 320px); image-rendering: pixelated; background: #fff; border-radius: 10px; margin-top: 1rem; }
.qr-corner { position: fixed; bottom: 1.2rem; right: 1.2rem; width: 110px; image-rendering: pixelated; background: #fff; border-radius: 8px; }
.key-hint { position: fixed; left: 50%; bottom: .6rem; transform: translateX(-50%); font-size: .8rem; color: var(--muted); opacity: .0; transition: opacity .3s; }
body.present:hover .key-hint { opacity: .8; }