/* ============================================================================
   Synthiq · Front Door — component styles
   Consumes the tokens declared in tokens.css. Load order: tokens.css → demo.css.
   Motion is transform/opacity-only; prefers-reduced-motion is fully honored at
   the bottom of this file. See README.md for the motion-timing table.
   ============================================================================ */
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--bg);color:var(--fg)}
body{
  font-family:var(--sans);min-height:100vh;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  line-height:1.5;
}
.wrap{max-width:1080px;margin:0 auto;padding:30px 22px 60px}

/* ── header ─────────────────────────────────────────────────────────── */
header{display:flex;justify-content:space-between;align-items:center;gap:16px;
  border-bottom:1px solid var(--line);padding-bottom:15px;margin-bottom:30px;flex-wrap:wrap}
.brand{font-family:var(--mono);font-weight:500;letter-spacing:.16em;font-size:.72rem;color:var(--muted);text-transform:uppercase}
.brand b{color:var(--fg);font-weight:600}
.hmeta{display:flex;align-items:center;gap:16px;font-family:var(--mono);font-size:.66rem;color:var(--muted)}
.proto{color:var(--muted)}
.live{display:inline-flex;align-items:center;gap:7px;color:var(--accent-txt);letter-spacing:.08em}
.live .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 var(--acc-bd-hi);animation:pulse 2s ease-out infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(110,91,255,.45)}70%{box-shadow:0 0 0 7px rgba(110,91,255,0)}100%{box-shadow:0 0 0 0 rgba(110,91,255,0)}}

/* ── intro ──────────────────────────────────────────────────────────── */
h1{font-size:clamp(1.6rem,3.8vw,2.5rem);font-weight:600;line-height:1.12;letter-spacing:-.02em;max-width:20ch;text-wrap:balance}
h1 .hl{color:var(--accent-txt)}
.sub{color:var(--muted2);margin:14px 0 26px;max-width:60ch;line-height:1.6;font-size:.96rem;text-wrap:pretty}
a{color:var(--accent-txt)} a:hover{color:var(--accent)}

/* ── scenario tabs ──────────────────────────────────────────────────── */
.scenarios{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:14px;align-items:center}
.scn{
  background:var(--s2);border:1px solid var(--line);color:var(--muted2);
  font-family:var(--sans);font-size:.85rem;font-weight:500;
  padding:9px 15px;border-radius:8px;cursor:pointer;
  transition:border-color .16s,color .16s,background .16s;
}
.scn:hover{border-color:var(--acc-bd-hi);color:var(--fg)}
.scn.active{border-color:var(--acc-bd-hi);color:var(--fg);background:var(--acc-wash)}
.scn[aria-selected="true"]{position:relative}
.replay{background:none;border:1px solid transparent;color:var(--muted);font-family:var(--mono);
  font-size:.72rem;cursor:pointer;padding:9px 10px;border-radius:8px;transition:color .15s,border-color .15s;margin-left:auto}
.replay:hover{color:var(--fg);border-color:var(--line)}
.scn:focus-visible,.replay:focus-visible,.cta:focus-visible,.rawtoggle:focus-visible,
.bubble.agent:focus-visible,.tgroup:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ── stage ──────────────────────────────────────────────────────────── */
.stage{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:12px;
  overflow:hidden;background:var(--s1);min-height:430px}
.col{--colpad:16px;padding:0 var(--colpad) 22px;display:flex;flex-direction:column;gap:11px;align-content:start;min-width:0}
.col+.col{border-left:1px solid var(--line);background:var(--bg)}
/* Sticky column header. FIX: each header carries ITS OWN column's surface so
   scrolled content (hero mode, where columns are scroll containers) never bleeds
   through it. Left col shows --s1 (inherited from .stage); right col shows --bg.
   Full-bleed via negative horizontal margins so the solid background also covers
   the column's inner padding; the header owns the column's top padding, so it
   sits flush to the scroll-container top with no gap for content to peek through. */
.colhead{display:flex;align-items:center;justify-content:space-between;gap:8px;
  font-family:var(--mono);font-size:.63rem;letter-spacing:.13em;color:var(--muted);
  text-transform:uppercase;margin:0 calc(-1 * var(--colpad)) 2px;padding:16px var(--colpad) 10px;
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:2;background:var(--s1)}
#convo .colhead{background:var(--s1)}
#ledger .colhead{background:var(--bg)}
.colhead .live{font-size:.6rem}

/* ── conversation bubbles ───────────────────────────────────────────── */
.bubble{max-width:94%;padding:10px 13px;border-radius:10px;font-size:.88rem;line-height:1.55;
  opacity:0;transform:translateY(6px);transition:opacity .35s ease,transform .35s ease,box-shadow .18s,border-color .18s}
.bubble.show{opacity:1;transform:none}
.cust{align-self:flex-start;background:var(--s2);border:1px solid var(--line)}
.agent{align-self:flex-end;background:var(--acc-wash);border:1px solid var(--acc-bd)}
.who{font-family:var(--mono);font-size:.58rem;letter-spacing:.1em;color:var(--muted);
  display:flex;align-items:center;gap:6px;margin-bottom:5px;text-transform:uppercase}
.agent .who{color:var(--accent-txt)}
.txt{color:var(--fg)} .cust .txt{color:var(--muted2)}
.caret{display:inline-block;width:2px;height:1em;background:var(--accent);vertical-align:-2px;margin-left:1px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* step chip — the causality thread anchor */
.chip{display:inline-flex;align-items:center;justify-content:center;min-width:16px;height:16px;
  padding:0 4px;border-radius:5px;background:var(--acc-bd);color:var(--accent-txt);
  font-family:var(--mono);font-size:.62rem;font-weight:500;letter-spacing:0}

/* typing indicator */
.typing{align-self:flex-end;display:flex;gap:4px;padding:11px 14px;background:var(--acc-wash);
  border:1px solid var(--acc-bd);border-radius:10px}
.typing span{width:5px;height:5px;border-radius:50%;background:var(--accent-txt);opacity:.5;animation:td 1.2s ease-in-out infinite}
.typing span:nth-child(2){animation-delay:.18s}.typing span:nth-child(3){animation-delay:.36s}
@keyframes td{0%,60%,100%{opacity:.35;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}

/* ── protocol ledger: tool-call groups ─────────────────────────────── */
.tgroup{border:1px solid var(--line);border-left:2px solid var(--acc-bd);border-radius:10px;
  background:var(--s1);padding:9px;display:flex;flex-direction:column;gap:8px;
  transition:border-color .18s,box-shadow .18s;outline:none}
.tghead{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:.6rem;
  letter-spacing:.06em;color:var(--muted);text-transform:uppercase;padding:1px 2px}
/* cross-column causality highlight */
.linked{border-color:var(--acc-bd-hi);box-shadow:0 0 0 1px var(--acc-bd-hi),0 0 22px -8px var(--accent)}
.linked.tgroup{border-left-color:var(--accent)}

.card{background:var(--s2);border:1px solid var(--line);border-radius:8px;padding:9px 11px;
  font-family:var(--mono);font-size:.72rem;line-height:1.5;
  opacity:0;transform:translateY(6px);transition:opacity .35s ease,transform .35s ease;overflow-x:auto}
.card.show{opacity:1;transform:none}
.card-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.cstat{width:7px;height:7px;border-radius:50%;background:var(--accent);flex:none}
.cstat.calling{animation:pulse 1.1s ease-out infinite}
.cstat.done{background:var(--muted)}
.dir{color:var(--accent-txt);font-weight:500}
.dir.res{color:var(--muted)}
.tname{color:var(--fg);font-weight:500}
.ct-right{margin-left:auto;display:flex;align-items:center;gap:9px}
.rawtoggle{background:var(--s3);border:1px solid var(--line);color:var(--muted);
  font-family:var(--mono);font-size:.62rem;padding:2px 7px;border-radius:5px;cursor:pointer;
  transition:color .14s,border-color .14s;white-space:nowrap}
.rawtoggle:hover{color:var(--accent-txt);border-color:var(--acc-bd-hi)}
.lat{font-family:var(--mono);font-size:.64rem;color:var(--muted);white-space:nowrap}
.lat.calling{color:var(--accent-txt)}
.card pre{white-space:pre-wrap;word-break:break-word;color:var(--muted2);margin-top:6px}
.card pre .k{color:var(--accent-txt)}.card pre .v{color:var(--muted2)}
.rpc{overflow:hidden;max-height:0;opacity:0;transition:max-height .3s ease,opacity .25s ease}
.rpc.open{max-height:340px;opacity:1;margin-top:6px}
.rpc pre{margin-top:0;padding:8px 9px;background:var(--bg);border:1px solid var(--line);border-radius:6px;color:var(--muted)}
.rpc pre .k{color:var(--accent-txt)}.rpc pre .v{color:var(--muted2)}
.result{overflow:hidden;max-height:0;opacity:0;transition:max-height .4s ease,opacity .35s ease,margin-top .3s ease}
.result.show{max-height:420px;opacity:1;margin-top:8px;padding-top:8px;border-top:1px dashed var(--line)}
.badge{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:.62rem;
  letter-spacing:.05em;padding:3px 9px;border-radius:99px;margin-top:8px}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.badge.pending{color:var(--pending);border:1px solid var(--pending-bd);background:var(--pending-wash)}
.badge.ok{color:var(--ok);border:1px solid var(--ok-bd);background:rgba(62,207,142,.08)}

/* ── tally ──────────────────────────────────────────────────────────── */
.tally{display:flex;gap:14px;flex-wrap:wrap;margin-top:14px;opacity:0;transform:translateY(6px);
  transition:opacity .5s ease,transform .5s ease}
.tally.show{opacity:1;transform:none}
.tally .stat{flex:1 1 150px;background:var(--s1);border:1px solid var(--line);border-radius:10px;padding:13px 15px}
.tally .stat.amber{border-color:var(--pending-bd);background:var(--pending-wash)}
.tally b{display:block;font-family:var(--sans);font-weight:600;font-size:1.35rem;letter-spacing:-.01em;color:var(--fg);margin-bottom:3px}
.tally .amber b{color:var(--pending)}
.tally .stat span{font-family:var(--mono);font-size:.68rem;color:var(--muted);line-height:1.4;display:block}

/* ── footer ─────────────────────────────────────────────────────────── */
footer{margin-top:36px;border-top:1px solid var(--line);padding-top:22px;display:flex;
  justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
footer p{color:var(--muted2);font-size:.88rem;max-width:56ch;line-height:1.6;text-wrap:pretty}
footer p b{color:var(--pending);font-weight:500}
.cta{background:var(--accent);color:#fff;font-weight:600;font-family:var(--sans);
  padding:12px 22px;border-radius:9px;text-decoration:none;font-size:.9rem;white-space:nowrap;
  transition:background .16s,transform .16s}
.cta:hover{background:#8071ff;color:#fff;transform:translateY(-1px)}

/* ── hero mode ──────────────────────────────────────────────────────── */
.herobar{display:none}
body.hero .full-only{display:none}
body.hero .wrap{max-width:1240px;padding:16px 20px 18px}
body.hero .herobar{display:flex;align-items:center;justify-content:space-between;gap:16px;
  flex-wrap:wrap;margin-bottom:12px}
body.hero .htag{font-size:clamp(.95rem,1.8vw,1.15rem);font-weight:500;color:var(--fg);letter-spacing:-.01em}
body.hero .htag .hl{color:var(--accent-txt)}
body.hero .stage{min-height:0}
body.hero .col{max-height:min(52vh,380px);overflow:auto;scrollbar-width:thin;scrollbar-color:var(--line2) transparent}
body.hero .col::-webkit-scrollbar{width:6px}
body.hero .col::-webkit-scrollbar-thumb{background:var(--line2);border-radius:3px}
body.hero .hnote{font-family:var(--mono);font-size:.64rem;color:var(--muted);margin-top:10px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
body.hero .hnote b{color:var(--pending);font-weight:500}

/* ── responsive ─────────────────────────────────────────────────────── */
@media(max-width:820px){
  .stage{grid-template-columns:1fr}
  .col+.col{border-left:none;border-top:1px solid var(--line)}
  body.hero .col{max-height:none}
  .bubble{max-width:100%}
}
@media(max-width:420px){
  .wrap{padding:22px 14px 48px}
  .col{--colpad:12px;padding:0 var(--colpad) 18px}
  .scn{font-size:.8rem;padding:8px 12px}
  .tally .stat{flex-basis:120px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .bubble,.card,.tally{opacity:1;transform:none}
  .result{max-height:none;opacity:1}
  .rpc{transition:none}
}