:root{--bg:#0B1220;--panel:#111A2E;--line:#22304D;--ink:#E8EEF8;--muted:#9AA8C2;--accent:#38BDF8;--accent-ink:#0B1220;--danger:#EF4444;--tile:#18243D;--chip:#22304D;color-scheme:dark}
:root[data-theme="light"]{--bg:#F4F7FB;--panel:#FFFFFF;--line:#D8E0EC;--ink:#0F172A;--muted:#55637A;--accent:#0284C7;--accent-ink:#FFFFFF;--tile:#E6ECF5;--chip:#E2E8F0;color-scheme:light}
@media (prefers-color-scheme:light){:root:not([data-theme="dark"]){--bg:#F4F7FB;--panel:#FFFFFF;--line:#D8E0EC;--ink:#0F172A;--muted:#55637A;--accent:#0284C7;--accent-ink:#FFFFFF;--tile:#E6ECF5;--chip:#E2E8F0;color-scheme:light}}
/* A call is always dark, whatever the theme: video reads best on a dark surface. */
.call{--bg:#0B1220;--panel:#111A2E;--line:#22304D;--ink:#E8EEF8;--muted:#9AA8C2;--accent:#38BDF8;--accent-ink:#0B1220;--tile:#18243D;--chip:#22304D;color-scheme:dark}
[hidden]{display:none!important}
*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}.view[hidden]{display:none!important}
.hero{padding:12vh 22px 8vh}.kicker{color:var(--accent);font-weight:600;margin:0 0 8px}h1{font-size:clamp(32px,5vw,56px);line-height:1.08;margin:0 0 16px;letter-spacing:-.02em;max-width:18ch}
.lede{color:var(--muted);font-size:clamp(17px,1.5vw,20px);max-width:62ch;margin:0 0 28px}
.actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.joinf{display:flex;gap:8px;flex:1 1 320px;max-width:460px}
input{font:inherit;color:var(--ink);background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:12px 14px;width:100%}input:focus{outline:none;border-color:var(--accent)}
.btn{font:inherit;font-weight:600;color:var(--ink);background:transparent;border:1px solid var(--line);border-radius:10px;padding:12px 18px;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.btn:disabled{opacity:.5;cursor:default}
.msg{min-height:1.4em;color:var(--muted);margin:14px 0 0}.msg.err{color:#FCA5A5}.small{color:var(--muted);font-size:14px;margin:0 0 16px}
.feat{list-style:none;padding:0;margin:48px 0 0;display:grid;grid-template-columns:repeat(2,1fr);gap:14px;max-width:860px}.feat li{border:1px solid var(--line);border-radius:12px;padding:14px 16px;color:var(--muted)}.feat b{color:var(--ink)}
.lobby{display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;padding:8vh 22px}
.preview{position:relative;background:#000;border-radius:16px;overflow:hidden;aspect-ratio:16/9}.preview video{width:100%;height:100%;object-fit:cover;transform:scaleX(-1)}
.pv-msg{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;margin:0;color:var(--muted);text-align:center;padding:20px}
.pv-ctl{position:absolute;bottom:12px;left:0;right:0;display:flex;gap:10px;justify-content:center}
.lobby-side h2{margin:0 0 4px;font-size:28px}.lobby-side label{display:grid;gap:6px;font-weight:600;margin:0 0 14px}.lobby-side .btn{width:100%;margin:0 0 10px}
.round{font:inherit;font-size:14px;font-weight:600;color:var(--ink);background:var(--chip);border:1px solid var(--line);border-radius:999px;padding:10px 14px;cursor:pointer;white-space:nowrap}.round.off{background:#3B1D24;border-color:#7F1D1D}.round.danger{background:var(--danger);border-color:var(--danger)}.round.on{background:var(--accent);color:var(--accent-ink)}
.call{position:fixed;inset:0;z-index:50;display:flex;flex-direction:column;background:var(--bg);color:var(--ink)}
.stage{flex:1;display:flex;min-height:0}.grid{flex:1;display:grid;gap:10px;padding:10px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));align-content:center;overflow:auto}
.tile{position:relative;background:#000;border-radius:14px;overflow:hidden;aspect-ratio:16/9;border:2px solid transparent}.tile.speaking{border-color:var(--accent)}
.tile video{width:100%;height:100%;object-fit:cover}.tile.local video{transform:scaleX(-1)}.tile.screen video{object-fit:contain}
.tile .nm{position:absolute;left:10px;bottom:10px;background:rgba(0,0,0,.6);padding:4px 10px;border-radius:8px;font-size:14px}
.tile .av{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:44px;font-weight:700;color:var(--muted)}
.tile .hand{position:absolute;right:10px;top:10px;font-size:22px}.burst{position:absolute;right:16px;bottom:16px;font-size:40px;animation:rise 2s ease-out forwards}
@keyframes rise{to{transform:translateY(-120px);opacity:0}}
.side{width:340px;border-left:1px solid var(--line);display:flex;flex-direction:column;background:var(--panel)}
.tabs{display:flex;border-bottom:1px solid var(--line)}.tabs button{flex:1;font:inherit;color:var(--muted);background:none;border:0;padding:12px;cursor:pointer}.tabs button.on{color:var(--ink);box-shadow:inset 0 -2px var(--accent)}#side-x{flex:0 0 44px}
.people{list-style:none;margin:0;padding:10px;overflow:auto}.people li{padding:8px 10px;border-radius:8px;display:flex;justify-content:space-between;gap:8px}.people li:hover{background:var(--tile)}
.people .pc{display:flex;gap:6px}.people .pc button{font:inherit;font-size:12px;color:var(--ink);background:var(--chip);border:0;border-radius:6px;padding:3px 8px;cursor:pointer}
.chatbox{display:flex;flex-direction:column;flex:1;min-height:0}.msgs{flex:1;overflow:auto;padding:12px;display:flex;flex-direction:column;gap:8px}
.msgs .m{background:var(--tile);border-radius:10px;padding:8px 10px}.msgs .m b{font-size:13px;color:var(--accent)}#chatf{display:flex;gap:8px;padding:10px;border-top:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:12px;padding:10px 14px;border-top:1px solid var(--line);background:var(--panel)}.ctl{flex:1;display:flex;gap:8px;justify-content:center;flex-wrap:wrap}.clock{color:var(--muted);font-size:14px;min-width:80px}
@media (max-width:820px){.lobby{grid-template-columns:1fr;padding:4vh 16px}.feat{grid-template-columns:1fr}.side{position:fixed;inset:0 0 var(--bar-h,64px) 0;width:auto;z-index:60}.clock{display:none}.grid{grid-template-columns:1fr}.round{padding:9px 11px;font-size:13px}}

.theme-btn{background:transparent;border:1px solid var(--line);color:var(--muted);border-radius:8px;padding:5px 9px;font:inherit;font-size:13px;cursor:pointer}

.notes-banner{position:absolute;top:52px;left:50%;transform:translateX(-50%);z-index:5;background:rgba(56,189,248,.16);color:var(--ink);border:1px solid rgba(56,189,248,.45);border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600}
.stage{position:relative}.captions{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);width:min(860px,92%);z-index:4;display:flex;flex-direction:column;gap:4px;pointer-events:none}
.captions .cap{background:rgba(0,0,0,.72);color:#fff;border-radius:10px;padding:8px 12px;font-size:17px;line-height:1.4}.captions .cap b{color:#7dd3fc;margin-right:6px}.captions .interim{opacity:.75}
.round.on{border-color:var(--accent)}.transcript{max-width:760px;margin:18px auto 0;text-align:left;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px 18px}.transcript .t{color:var(--muted);font-size:12px}
@media (max-width:600px){.captions .cap{font-size:15px}.notes-banner{font-size:12px;top:48px}}

/* Departments (#1245 step 5) */
.depts{flex:1;min-height:0;overflow:auto;padding:12px;display:flex;flex-direction:column;gap:10px}.dept-intro{color:var(--muted);font-size:14px;margin:0 0 4px}
.dept{border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:var(--tile)}.dept header{display:flex;flex-direction:column;gap:2px;margin:0 0 8px}
.dept h3{margin:0;font-size:16px}.dept .prod{color:var(--muted);font-size:12px}.dept dl{margin:0 0 10px;font-size:13px}.dept dt{color:var(--accent);font-weight:600;margin-top:6px}.dept dd{margin:2px 0 0;color:var(--ink)}
.dept .round{width:100%}.dept .round:disabled{opacity:.6;cursor:default}
.people em.ai{font-style:normal;font-size:11px;font-weight:700;background:var(--accent);color:var(--accent-ink);border-radius:6px;padding:1px 6px;margin-left:6px}
.tile.agent{border-color:rgba(56,189,248,.35)}.tile.agent .av{color:var(--accent)}
.side{min-height:0}.people{flex:1;min-height:0}

/* Embedded SAIG sign-in (guide §2a) */
.signin{margin:22px 0 8px;padding:18px;border:1px solid var(--line);border-radius:16px;background:var(--tile);max-width:500px}
.signin .kicker{margin:0 0 4px}.signin .small{margin:0 0 12px}.signin-box{min-height:320px}.whoami{margin-top:8px}
/* Time-choice invitations (MEET-R-020) */
.inv{max-width:620px;padding-top:40px;padding-bottom:40px}.inv h1{margin:.2em 0 .3em}
.inv-card{border:1px solid var(--line);border-radius:16px;padding:16px 18px 8px;background:var(--tile);margin:18px 0 10px}
.inv-day{font-weight:600;margin:12px 0 8px}.inv-slots{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:6px}
.slot{font:inherit;padding:10px 16px;border-radius:22px;border:1px solid var(--accent);background:transparent;color:var(--accent);cursor:pointer}
.slot.on{background:var(--accent);color:var(--accent-ink)}.slot:disabled{opacity:.4;cursor:default}
.inv-confirm{margin:16px 0;padding:14px 16px;border-radius:14px;background:var(--tile);border:1px solid var(--line)}
.cal{display:flex;flex-wrap:wrap;gap:10px;margin:6px 0 14px}.cal .btn,.inv .actions .btn{text-decoration:none}.inv .foot{margin-top:36px;opacity:.75}
.schedule{margin:18px 0;padding:18px;border:1px solid var(--line);border-radius:16px;background:var(--tile);max-width:560px}
.schedule label{display:block;margin:0 0 10px;font-size:14px}.schedule input,.schedule textarea,.schedule select{width:100%;margin-top:4px}
.schedule .slots-in{display:grid;gap:8px}.sched-preview{white-space:pre-wrap;font-size:13px;max-height:260px;overflow:auto;border:1px solid var(--line);border-radius:10px;padding:10px;margin:10px 0}