:root{--bg:#f6f7f9;--surface:#fff;--text:#1d2330;--muted:#677084;--line:#cfd5df;--accent:#2b6f8f;--danger:#c0504d;--ok:#2e8b57}
@media (prefers-color-scheme:dark){:root{color-scheme:dark;--bg:#14171d;--surface:#1d222b;--text:#e8ebf1;--muted:#98a1b3;--line:#363d4a;--accent:#6fb4d4}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.45 Montserrat,system-ui,-apple-system,"Segoe UI",sans-serif}
header.top{position:sticky;top:0;z-index:40;display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;padding:12px 16px;background:var(--surface);border-bottom:1px solid var(--line)}
header.top h1{font-size:17px;margin:0;flex:1 1 220px}
.ctl{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
select,button,input,textarea{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--ctl,var(--line));border-radius:8px;padding:8px 12px}
:focus-visible{outline:3px solid var(--accent-text,var(--accent));outline-offset:2px}
button{cursor:pointer}
button:disabled{opacity:.4;cursor:not-allowed}
button.primary{background:var(--accent);color:var(--ink,#fff);border-color:var(--accent-text,var(--accent));font-weight:700}
button.danger{border-color:var(--danger);color:var(--danger)}
a.lnk{color:var(--accent-text,var(--accent));font-size:13px;text-decoration:none;cursor:pointer}
a.lnk:hover{text-decoration:underline}
.wrap{max-width:720px;margin:0 auto;padding:24px 16px}
.card{color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px}
.card h2{margin:0 0 6px;font-size:17px}
.stack{display:grid;grid-template-columns:minmax(0,1fr);gap:14px}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.muted{color:var(--muted)}
.err{color:var(--danger);min-height:1.4em;margin:8px 0 0}
.pill{padding:2px 10px;border-radius:999px;font-size:12px;font-weight:700;background:var(--bg);border:1px solid var(--line)}
.pill.on{background:var(--ok);color:var(--ok-ink,#fff);border-color:var(--ok)}
.acts{display:grid;grid-template-columns:minmax(0,1fr);gap:12px;margin-top:12px}
.act{display:block;color:inherit;text-decoration:none;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.act:hover{border-color:var(--accent)}
.act b{display:block;font-size:16px}
ul.users{list-style:none;margin:10px 0 0;padding:0;display:grid;gap:6px}
ul.users li{display:flex;align-items:center;gap:10px;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg)}
ul.users li .nm{flex:1;word-break:break-all}
ul.users li.stack3{flex-direction:column;align-items:stretch;gap:4px}
ul.users li.stack3 .nm{flex:none;font-weight:700;word-break:normal;overflow-wrap:anywhere}
ul.users li.stack3 .info{font-size:12px}
ul.users li.stack3 .btns{display:flex;gap:8px;margin-top:2px}
ul.users li .num{min-width:26px;height:26px;border-radius:13px;background:var(--accent);color:var(--ink,#fff);font-size:12px;font-weight:700;display:grid;place-items:center;padding:0 6px}
.hide{display:none!important}

/* facilitator console: wide two-column on desktop */
.wrap:has(#console:not(.hide)){max-width:1500px}
.cgrid{display:grid;grid-template-columns:minmax(0,1fr);gap:14px;align-items:start}
.cgrid.hide{display:none}
@media(min-width:1000px){.cgrid{grid-template-columns:minmax(0,1fr) 420px}}

/* header links stay hidden until someone has signed in or joined (shared.js sets html.authed) */
html:not(.authed) header.top a.lnk:not(.entry){display:none} /* .entry = the one link left on the join page: the way in for facilitators */

/* Cyber First theme: switched on by shared.js (html[data-theme=cyberfirst]) for learners in a Cyber First day */
html[data-theme="cyberfirst"]{--bg:#eef6fa;--surface:#fff;--text:#12303f;--muted:#4f6b7a;--line:#c5dbe6;--accent:#0a7fae;color-scheme:light}
html[data-theme="cyberfirst"] body{font-family:Montserrat,"Segoe UI",system-ui,-apple-system,sans-serif}
html[data-theme="cyberfirst"] header.top{background:#0a7fae url(cyberfirst/header.jpg) center/cover no-repeat;border:0;color:#fff;padding:14px 18px}
html[data-theme="cyberfirst"] header.top h1{color:#fff;display:flex;align-items:center;gap:10px;font-weight:800}
html[data-theme="cyberfirst"] header.top h1::before{content:"";width:36px;height:36px;border-radius:8px;background:url(cyberfirst/logo.png) center/cover}
html[data-theme="cyberfirst"] header.top a.lnk{color:#fff;font-weight:600}
html[data-theme="cyberfirst"] .card{border-radius:16px;border-color:var(--line);box-shadow:0 2px 8px rgba(10,127,174,.08)}
html[data-theme="cyberfirst"] button.primary{background:#0a7fae;border-color:#0a7fae;font-weight:700}
html[data-theme="cyberfirst"] button,html[data-theme="cyberfirst"] select,html[data-theme="cyberfirst"] input{border-radius:10px}
html[data-theme="cyberfirst"] .act{border-radius:14px;background:#fff}
html[data-theme="cyberfirst"] .act:hover{border-color:#0a7fae}
/* day panel on the home page */
.cfnow{border-radius:16px;color:#fff;padding:16px 18px;margin:0 0 14px;background:#0a7fae center/cover no-repeat}
.cfnow h2{margin:0 0 4px;font-size:22px;color:#fff}.cfnow ul{margin:6px 0 0 18px;padding:0}.cfnow li{margin:3px 0}
.cfnow .tag{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;background:rgba(255,255,255,.22);border-radius:999px;padding:2px 10px;margin-bottom:6px}
.cfteam{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:6px 14px;font-weight:800;color:#fff;font-size:15px}
.cfmods{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px;margin-top:10px}
.cfmod{border-radius:12px;overflow:hidden;background:#fff;border:2px solid var(--line);position:relative}
.cfmod img{display:block;width:100%;height:auto}.cfmod b{display:block;padding:6px 10px;font-size:13px}
.cfmod.now{border-color:#0a7fae;box-shadow:0 0 0 3px rgba(10,127,174,.25)}
.cfmod.now::after{content:"NOW";position:absolute;top:6px;right:6px;background:#0a7fae;color:#fff;font-size:11px;font-weight:800;border-radius:999px;padding:1px 8px}

/* branding (brand.js sets the colours; nothing here changes the look until an owner saves branding) */
.brandchip{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.01em}
.brandlogo{height:34px;width:auto;max-width:140px;object-fit:contain;display:block;border-radius:6px}
.brandname{font-size:17px}
header.top h1 .brandchip{font-size:inherit}
.bar,.track{border-color:var(--ctl,var(--line))}

/* join page: a hero beside the join card, with big shapes across the whole page behind them */
.hero{display:none;position:relative;padding:28px 4px 8px}
.wrap:has(#reg:not(.hide)){max-width:1200px;grid-template-columns:minmax(0,1fr)}
.wrap:has(#reg:not(.hide)) .hero{display:block}
@media(min-width:900px){
  .wrap:has(#reg:not(.hide)){grid-template-columns:minmax(0,1fr) 430px;column-gap:64px;align-items:start;padding-top:56px}
  .wrap:has(#reg:not(.hide)) .hero{grid-column:1;grid-row:1}
  .wrap:has(#reg:not(.hide)) #reg{grid-column:2;grid-row:1}
}
/* the same shapes sit behind every screen of the learner page (join, waiting, home) */
html[data-brand="on"] body:has(#reg){overflow-x:hidden}
html[data-brand="on"] body:has(#reg)::before{content:"";position:fixed;z-index:-1;pointer-events:none;inset:0;
  background:radial-gradient(circle at 92% 108%,var(--accent) 0,var(--accent) 300px,transparent 301px),radial-gradient(circle at 104% 6%,var(--shape2) 0,var(--shape2) 170px,transparent 171px)}
html[data-brand="on"] body:has(#reg)::after{content:"";position:fixed;z-index:-1;pointer-events:none;left:-70px;bottom:-90px;width:300px;height:300px;border-radius:64px;transform:rotate(18deg);background:var(--shape3)}
.hero .tag{display:inline-block;background:var(--accent);color:var(--ink,#fff);font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;border-radius:999px;padding:5px 14px}
.hero h2{margin:18px 0 0;font-size:clamp(32px,4.6vw,56px);line-height:1.08;font-weight:800;letter-spacing:-.02em;overflow-wrap:anywhere}
.hero p{margin:18px 0 0;font-size:clamp(16px,2vw,20px);line-height:1.55;color:var(--muted);max-width:30em;white-space:pre-line}
.hero img.heroimg{display:block;margin-top:26px;width:100%;max-width:520px;max-height:260px;object-fit:cover;border-radius:22px}
html[data-brand="on"] #reg{padding:32px;border-radius:28px;box-shadow:0 24px 60px rgba(0,0,0,.35);border:0}
html[data-brand="on"] #reg h2{font-size:26px;font-weight:800}
html[data-brand="on"] #regForm{display:grid;gap:14px;margin-top:18px}
html[data-brand="on"] #regForm input{width:100%;min-height:56px;border-radius:14px;border-width:2px;font-size:18px;flex:none!important}
html[data-brand="on"] #regForm button.primary{min-height:58px;border-radius:16px;font-size:18px;border-color:var(--accent)}