:root{--primary:#53C1D0;--primary-deep:#0D7D8F;--accent:#F6931A;--teal-green:#13AA93;--red:#EC1921;--sky:#8DE4FF;--lime:#ABFF61;--bg:#f7fafa;--card:#fff;--text:#17202e;--muted:#5b6b7f;--line:#dbe2ea;--ok:#0e7a5f;--warn:#9a6b00;--bad:#b3261e;--radius:14px}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.55;font-size:17px}
a{color:var(--primary-deep)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.topbar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 18px;background:#fff;color:#000;border-bottom:1px solid var(--line);flex-wrap:wrap}
.brand{color:#000;text-decoration:none;font-weight:800;font-size:19px;display:flex;align-items:center;gap:12px}
.brand-logo{height:40px;width:auto;display:block}
.topbar nav{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.nav-link{color:#000;text-decoration:none;padding:10px 12px;border-radius:10px;font-weight:600}
.nav-link:hover{background:rgba(83,193,208,.18)}
main{max-width:980px;margin:0 auto;padding:20px 16px 48px;min-height:60vh}
.footer{max-width:980px;margin:0 auto;padding:18px 16px 32px;color:var(--muted);font-size:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin:16px 0;box-shadow:0 1px 3px rgba(0,0,0,.06)}
.hero{background:var(--primary);color:#fff;border-radius:18px;padding:28px 22px;margin:16px 0}
.hero h1{margin:0 0 8px;font-size:32px;line-height:1.15}
.hero p{margin:6px 0}
.hero-logo{height:64px;width:auto;display:block;margin-bottom:14px}
h1{font-size:28px;line-height:1.2;margin:8px 0}
h2{font-size:22px;margin:6px 0 10px}
h3{font-size:18px;margin:10px 0 6px}
.muted{color:var(--muted)}
.btn{display:inline-block;border:0;border-radius:12px;padding:13px 18px;font-size:17px;font-weight:700;cursor:pointer;text-decoration:none;text-align:center;min-height:48px}
.btn-primary{background:var(--primary-deep);color:#fff}
.btn-accent{background:var(--accent);color:#141414}
.btn-ghost{background:transparent;color:inherit;border:2px solid currentColor}
.btn-danger{background:var(--bad);color:#fff}
.btn-sm{padding:8px 12px;min-height:40px;font-size:15px}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}
label{display:block;font-weight:700;margin:14px 0 5px}
input,select,textarea{width:100%;padding:13px;font-size:17px;border:2px solid var(--line);border-radius:12px;background:#fff;font-family:inherit}
textarea{min-height:110px;resize:vertical}
input[type=checkbox]{width:auto;padding:0}
.check{display:flex;gap:10px;align-items:flex-start;font-weight:600;margin:10px 0}
.check input{width:22px;height:22px;margin-top:2px}
.hint{font-size:14px;color:var(--muted);margin:4px 0}
.error{background:#fdecea;color:var(--bad);border:1px solid #f5c6c2;border-radius:12px;padding:12px 14px;margin:12px 0}
.success{background:#e6f4ea;color:var(--ok);border:1px solid #a3d9b1;border-radius:12px;padding:12px 14px;margin:12px 0}
.notice{background:#fff4e0;color:#6d4c00;border:1px solid #f0d48a;border-radius:12px;padding:12px 14px;margin:12px 0}
.q{border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:12px 0;background:#fff}
.q.pinned{border-left:6px solid var(--accent)}
.q-text{font-size:19px;font-weight:600;margin:4px 0}
.q-meta{color:var(--muted);font-size:14px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.badge{display:inline-block;border-radius:999px;padding:3px 10px;font-size:13px;font-weight:700;border:1px solid}
.badge-pending{color:#6d4c00;background:#fff4e0;border-color:#e8c97a}
.badge-approved{color:var(--ok);background:#e6f4ea;border-color:#a3d9b1}
.badge-answered{color:var(--primary-deep);background:#e3f5f8;border-color:#a8dbe4}
.badge-rejected,.badge-hidden{color:var(--bad);background:#fdecea;border-color:#f5c6c2}
.badge-pinned{color:#141414;background:var(--accent);border-color:var(--accent)}
.badge-featured{color:#fff;background:var(--primary-deep);border-color:var(--primary-deep)}
.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.stat{font-size:28px;font-weight:800}
.qr-wrap{text-align:center}
.qr-wrap img{max-width:280px;width:100%;height:auto;border:1px solid var(--line);border-radius:12px;background:#fff}
.code{font-size:28px;font-weight:800;letter-spacing:.18em}
/* Compact QR block, moderator queue only: a small horizontal card so the
   queue is visible without scrolling past a giant QR code. The welcome
   screen and admin event page keep the full .qr-wrap block. */
.qr-compact{display:flex;align-items:center;gap:18px;text-align:left}
.qr-compact img{width:120px;height:120px;flex:none;border:1px solid var(--line);border-radius:12px;background:#fff}
.qr-compact h2{margin:0 0 4px}
.qr-compact p{margin:4px 0}
.qr-compact .code{font-size:22px}
.qr-compact .btn-row{margin:8px 0 0}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:12px 0}
.toolbar input,.toolbar select{width:auto;flex:1;min-width:140px}
.presenter{background:#0b3d46;color:#fff;border-radius:18px;padding:26px}
.presenter .q-text{font-size:30px}
.featured{border:3px solid var(--accent);border-radius:16px;padding:22px;background:#fff;color:var(--text);margin:16px 0}
.featured .q-text{font-size:30px}
.empty{border:2px dashed var(--line);border-radius:12px;padding:26px;text-align:center;color:var(--muted);margin:12px 0}
.loading{padding:40px;text-align:center;color:var(--muted)}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:top}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}
.tabs a{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);text-decoration:none;color:var(--text);font-weight:600}
.tabs a[aria-current="page"]{background:var(--primary-deep);color:#fff}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media (max-width:640px){body{font-size:16px}.hero h1{font-size:26px}.featured .q-text,.presenter .q-text{font-size:24px}main{padding:14px 12px 40px}.hero-logo{height:52px}}
/* Projector screen (/p/:code): no site chrome, logo + event name only, QR always visible */
body.projector{background:#0b3d46}
body.projector .topbar{display:none}
body.projector main{max-width:none;margin:0;padding:0;min-height:100vh;background:#0b3d46}
body.projector .presenter{border-radius:0;min-height:100vh;padding:28px 32px}
.proj-head{display:flex;align-items:center;gap:20px;margin:0 0 22px}
.proj-logo{height:64px;width:auto;display:block}
.proj-title{color:#fff;font-size:40px;line-height:1.1;margin:0}
.proj-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px;align-items:start}
.proj-qr{position:sticky;top:24px;background:#fff;color:var(--text);border-radius:16px;padding:22px 20px;text-align:center;box-shadow:0 2px 10px rgba(0,0,0,.25)}
.proj-qr img{width:100%;max-width:280px;height:auto;display:block;margin:0 auto}
.proj-qr-label{font-size:22px;font-weight:800;margin:0 0 10px}
.proj-code{font-size:44px;font-weight:800;letter-spacing:.14em;margin:12px 0 4px}
.proj-questions h2{color:#fff}
.proj-questions .featured .q-text{font-size:34px}
.proj-empty{border-color:rgba(255,255,255,.5);color:#e6f2f4;background:transparent}
.proj-none{color:#cdd8ea}
.presenter .q{color:var(--text)}
.presenter .q.is-answered{opacity:.6}
@media (max-width:900px){
  .proj-layout{display:flex;flex-direction:column}
  .proj-qr{order:-1;position:static;width:100%;max-width:420px;margin:0 auto}
  .proj-title{font-size:30px}
  .proj-logo{height:52px}
  body.projector .presenter{padding:20px 16px}
}
@media (max-width:640px){
  .proj-questions .featured .q-text{font-size:26px}
  .proj-code{font-size:36px}
}

/* ---------- Staff admin shell (Slido-style backend) ---------- */
/* Admin routes hide the public top bar and use the in-app sidebar instead.
   Participant screens and the presenter screen are unaffected. */
body.admin-shell .topbar{display:none}
body.admin-shell main{max-width:none;margin:0;padding:0;min-height:100vh;background:#fff}
.adm{display:flex;min-height:100vh;background:#f7fafa}
.adm-side{width:264px;flex:none;background:#fff;border-right:1px solid var(--line);padding:18px 14px;display:flex;flex-direction:column;gap:2px;position:sticky;top:0;height:100vh;overflow:auto}
.adm-brand{display:flex;align-items:center;gap:10px;padding:2px 8px 14px;font-weight:800;font-size:17px;color:#000;text-decoration:none}
.adm-brand img{height:32px;width:auto;display:block}
.adm-nav{display:flex;flex-direction:column;gap:2px}
.adm-nav a{display:block;padding:10px 12px;border-radius:10px;text-decoration:none;color:var(--text);font-weight:600}
.adm-nav a:hover{background:rgba(83,193,208,.14)}
.adm-nav a[aria-current="page"]{background:var(--primary-deep);color:#fff}
.adm-user{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:14px}
.adm-user p{margin:0 0 8px}
.adm-main{flex:1;min-width:0;padding:22px 28px 120px}
.adm-head{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap}
.adm-head h1{margin:0}
.adm-stats{display:flex;gap:14px;flex-wrap:wrap;margin:16px 0 4px}
.adm-stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 18px;min-width:130px}
.adm-stat b{font-size:26px;display:block;line-height:1.1}
.adm-stat span{color:var(--muted);font-size:14px}
.adm-search{max-width:440px;margin:14px 0 0}
.adm-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}
.adm-tabs button{padding:10px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:600;font-size:15px;cursor:pointer;color:var(--text)}
.adm-tabs button[aria-pressed="true"]{background:var(--primary-deep);border-color:var(--primary-deep);color:#fff}
.adm-row{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:10px 0;flex-wrap:wrap}
.adm-row-main{flex:1;min-width:220px}
.adm-row h3{margin:0 0 3px;font-size:18px}
.adm-row .meta{color:var(--muted);font-size:14px}
.adm-row .counts{color:var(--muted);font-size:14px;white-space:nowrap}
.pill{display:inline-block;border-radius:999px;padding:3px 10px;font-size:13px;font-weight:700;border:1px solid;white-space:nowrap}
.pill-live{color:var(--ok);background:#e6f4ea;border-color:#a3d9b1}
.pill-paused{color:#6d4c00;background:#fff4e0;border-color:#e8c97a}
.pill-ended,.pill-archived{color:var(--muted);background:#eef2f7;border-color:#dbe2ea}
.btn-present{background:#0e7a5f;color:#fff}
/* Event workspace */
.ws-top{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:16px}
.ws-back{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;min-height:44px;border-radius:50%;border:2px solid var(--line);background:#fff;color:var(--text);text-decoration:none;font-size:22px;font-weight:800;flex:none}
.ws-back:hover{background:rgba(83,193,208,.14)}
.ws-title{font-size:24px;line-height:1.2;margin:0}
.ws-meta{color:var(--muted);font-size:14px;margin:2px 0 0}
.ws-top .spacer{flex:1}
.ws-label{font-size:13px;font-weight:800;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin:18px 6px 8px}
.ws-label:first-child{margin-top:0}
.ws-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;margin:0 0 10px}
.ws-card h4{margin:0 0 4px;font-size:16px}
.ws-card p{margin:4px 0}
.ws-card .btn-row{margin:8px 0 0}
.ws-addrow{display:flex;gap:8px;margin:0 0 10px}
.ws-addrow .btn{flex:1}
.qa-count{font-size:14px;color:var(--muted)}
.ws-qa{width:100%;text-align:left;cursor:pointer;font:inherit;color:inherit}
.ws-qa[aria-current="true"]{border-color:var(--primary-deep);box-shadow:0 0 0 2px rgba(13,125,143,.25)}
/* Bottom present bar (workspace only): drives the projector screen. */
.present-bar{position:fixed;left:264px;right:0;bottom:0;z-index:20;background:#fff;border-top:1px solid var(--line);padding:10px 16px;display:flex;align-items:center;gap:10px;box-shadow:0 -2px 8px rgba(0,0,0,.06)}
.present-bar .pb-chip{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.present-bar .pb-chip .badge{margin-right:8px}
.present-bar .pb-empty{color:var(--muted);font-weight:600}
@media (max-width:900px){
  .adm{flex-direction:column}
  .adm-side{width:100%;height:auto;position:static;border-right:0;border-bottom:1px solid var(--line);padding:10px 12px}
  .adm-brand{padding-bottom:8px}
  .adm-nav{flex-direction:row;flex-wrap:wrap}
  .adm-nav a{padding:8px 10px}
  .adm-user{margin-top:8px;padding-top:8px;border-top:0;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
  .adm-user p{margin:0}
  .adm-main{padding:16px 14px 120px}
  .present-bar{left:0}
  .ws-title{font-size:20px}
}

/* ---------- Q&A features: settings drawer, tabs, labels, replies ---------- */
.qa-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.qa-tabs{display:flex;gap:8px}
.qa-tab{padding:9px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:700;font-size:15px;cursor:pointer;color:var(--text)}
.qa-tab[aria-pressed="true"]{background:var(--primary-deep);border-color:var(--primary-deep);color:#fff}
.qa-empty{text-align:center;padding:28px 20px}
.qa-empty h2{margin:0 0 6px}
.qa-empty p{color:var(--muted);margin:0}
.drawer-backdrop{position:fixed;inset:0;background:rgba(4,19,43,.35);z-index:39}
.drawer{position:fixed;top:0;right:0;bottom:0;width:380px;max-width:94vw;background:#fff;border-left:1px solid var(--line);box-shadow:-4px 0 18px rgba(0,0,0,.14);z-index:40;padding:20px 22px;overflow:auto}
.drawer-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.drawer-head h2{margin:0}
.drawer-row{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.drawer-row strong{display:block;font-size:16px}
.drawer-row p{margin:4px 0 0;font-size:14px}
.drawer-row input[type="number"]{width:90px;text-align:right}
.switch{position:relative;display:inline-block;width:52px;height:30px;flex:none;cursor:pointer}
.switch input{opacity:0;width:0;height:0}
.switch .slider{position:absolute;inset:0;background:#cbd5e1;border-radius:999px;transition:.15s}
.switch .slider:before{content:"";position:absolute;width:24px;height:24px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.15s;box-shadow:0 1px 3px rgba(0,0,0,.25)}
.switch input:checked + .slider{background:var(--primary-deep)}
.switch input:checked + .slider:before{transform:translateX(22px)}
.badge-label{background:#fff4e0;color:#6d4c00;border:1px solid #e8c97a}
.replies{margin:10px 0 0;padding:10px 0 0;border-top:1px dashed var(--line)}
.reply{padding:8px 0;border-bottom:1px solid #f0f0f0}
.reply:last-child{border-bottom:0}
.reply-meta{display:flex;gap:8px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-bottom:2px}
.reply p{margin:0}
.reply-form{margin:10px 0 0}
.reply-form textarea{width:100%;min-height:56px;resize:vertical}
.label-row{display:flex;gap:8px;align-items:center;margin:10px 0 0;flex-wrap:wrap}
.label-row input{width:170px}
.pb-icon{font-size:17px;line-height:1}
.pb-off{opacity:.45;text-decoration:line-through}

/* ---------- polls ---------- */
.ws-poll{display:flex;gap:10px;align-items:flex-start;text-align:left;width:100%;cursor:pointer;background:#fff}
.ws-poll[aria-current="true"]{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary)}
.poll-row-icon{font-size:20px;line-height:1.4}
.poll-row-body{flex:1;min-width:0}
.poll-row-body strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.poll-row-ctl{display:flex;gap:2px;flex-shrink:0}
.poll-row-ctl .btn{padding:2px 6px}
.picker-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin-top:12px}
.picker-card{display:flex;flex-direction:column;gap:6px;text-align:left;background:#fff;border:1px solid #e3e8ef;border-radius:12px;padding:16px;cursor:pointer;font:inherit}
.picker-card:hover{border-color:var(--primary)}
.picker-icon{font-size:26px}
.picker-card strong{font-size:16px}
.pf-opt-row{display:flex;gap:8px;align-items:center;margin-bottom:8px}
.pf-opt-row input{flex:1}
.pf-correct{white-space:nowrap}
.pf-sub{border:1px solid #e3e8ef;border-radius:10px;padding:10px;margin-bottom:10px}
.pf-sub input,.pf-sub select{margin-bottom:8px}
.poll-options{display:flex;flex-direction:column;gap:8px;margin:12px 0}
.poll-opt{text-align:left;justify-content:flex-start}
.poll-opt-sel{border-color:var(--primary);background:#eef7f9;box-shadow:0 0 0 1px var(--primary)}
.poll-form label{display:block;margin:12px 0 4px}
.poll-form input,.poll-form textarea{width:100%}
.poll-stars-big{display:flex;gap:6px;margin:12px 0}
.poll-star{font-size:34px;line-height:1;background:none;border:none;cursor:pointer;color:#cbd5e1;padding:2px}
.poll-star-on{color:#f6931a}
.poll-stars{font-size:26px;color:#f6931a;letter-spacing:4px}
.poll-avg{font-size:18px}
.poll-rank-row{display:flex;gap:10px;align-items:center;background:#fff;border:1px solid #e3e8ef;border-radius:10px;padding:10px 12px;margin-bottom:8px}
.poll-rank-pos{font-weight:800;color:var(--primary);min-width:20px}
.poll-rank-row span:nth-child(2){flex:1}
.poll-rank-btns{display:flex;gap:4px}
.poll-survey-q{margin:16px 0}
.poll-survey-q h4{margin:0 0 8px}
.poll-results{margin-top:8px}
.poll-bar-row{display:flex;gap:10px;align-items:center;margin-bottom:8px}
.poll-bar-label{width:32%;text-align:right;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.poll-bar{flex:1;height:16px;background:#eef2f7;border-radius:8px;overflow:hidden}
.poll-bar-fill{height:100%;background:var(--primary);border-radius:8px}
.poll-bar-num{width:70px;color:var(--muted);font-size:13px}
.poll-correct .poll-bar-label{font-weight:700}
.poll-correct .poll-bar-fill{background:var(--green)}
.poll-cloud{line-height:1.6;padding:8px 0}
.poll-word{color:var(--deep);font-weight:700;margin:0 6px;white-space:nowrap}
.poll-list{list-style:none;padding:0;margin:8px 0}
.poll-list li{background:#fff;border:1px solid #e3e8ef;border-radius:10px;padding:10px 12px;margin-bottom:8px}
.poll-list li p{margin:0 0 4px}
.poll-rank{margin:8px 0;padding-left:22px}
.poll-rank li{margin-bottom:6px}
.poll-board{padding-left:22px}
.poll-board li{margin-bottom:4px}
.poll-sub{margin:16px 0}
.poll-sub h4{margin:0 0 8px}
.poll-resp{border-top:1px solid #eef2f7;padding:10px 0}
.poll-resp p{margin:0 0 4px}
.poll-present h2{font-size:28px;margin:0 0 16px}
.poll-present .poll-bar-label{width:40%}
.poll-present .poll-word{font-size:20px}
.pb-showing{display:flex;gap:6px;align-items:center;font-size:13px;color:var(--muted);white-space:nowrap}
.pb-showing select{max-width:220px}
@media (max-width:700px){.poll-bar-label{width:28%}.poll-bar-num{width:56px}.pb-showing select{max-width:140px}}

/* ---------- wall landing ---------- */
.wall{background:var(--primary);color:#fff;border-radius:18px;padding:40px 22px 48px;margin:16px 0;text-align:center}
.wall-inner{max-width:640px;margin:0 auto}
.wall-logo{height:96px;width:auto;margin:0 auto 8px;display:block}
.wall-join-at{font-size:64px;font-weight:800;line-height:1;margin:18px 0 0}
.wall-code{font-size:110px;font-weight:800;line-height:1.05;letter-spacing:.06em;margin:6px 0 18px}
.wall-code-long{font-size:72px}
.wall-presenter-body .wall-code-long{font-size:64px}
.wall-qr{background:#fff;border-radius:18px;padding:16px;width:300px;margin:0 auto}
.wall-qr img{width:268px;height:268px;display:block}
.wall-event{font-size:24px;font-weight:700;margin:18px 0 4px}
.wall-join{margin-top:26px}
.wall-join h2{font-size:20px;margin:0 0 10px}
.wall-join form{display:flex;gap:10px}
.wall-join input{flex:1}
.wall-join-msg{text-align:left}
.wall-matches{list-style:none;padding:0;margin:10px 0 0;text-align:left}
.wall-matches li{margin-bottom:6px}
.wall-matches a{color:#fff;font-weight:700}
.wall-staff{margin-top:26px;font-size:14px}
.wall-staff a{color:#fff;text-decoration:underline}
.wall-empty{background:var(--primary-deep)}
.wall-presenter-body{text-align:center;padding:20px 0}
.wall-presenter-body .wall-join-at{font-size:56px}
.wall-presenter-body .wall-code{font-size:96px}
@media (max-width:640px){.wall-join-at{font-size:44px}.wall-code{font-size:52px}.wall-code-long{font-size:36px}.wall-qr{width:240px}.wall-qr img{width:208px;height:208px}.wall-join form{flex-direction:column}.wall-presenter-body .wall-join-at{font-size:40px}.wall-presenter-body .wall-code{font-size:48px}.wall-presenter-body .wall-code-long{font-size:36px}}