*{box-sizing:border-box}:root{--bg:#1B1C1D;--panel:#232426;--panel2:#292a2c;--silver:#e8e8e5;--muted:#a8a8a2;--line:#3b3c3f;--incoming:#303134;--outgoing:#705745;--danger:#b65b5b}html{background:var(--bg)}body{margin:0;background:var(--bg);color:var(--silver);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;min-height:100vh}.shell{max-width:760px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column;position:relative;overflow:hidden}.brand{padding:18px 18px 8px;text-align:center;letter-spacing:.28em;font-weight:600}.tagline{font-family:Georgia,serif;font-style:italic;text-align:center;color:var(--muted);font-size:13px;margin-bottom:10px}.tabs{display:flex;gap:8px;padding:10px 12px;overflow-x:auto;scrollbar-width:none;border-bottom:1px solid var(--line);background:rgba(27,28,29,.96);position:sticky;top:0;z-index:5}.tabs::-webkit-scrollbar{display:none}.tab{border:1px solid var(--line);background:var(--panel);color:var(--silver);padding:9px 14px;border-radius:999px;text-decoration:none;white-space:nowrap;font-size:14px}.tab.active{background:var(--silver);color:#202123;border-color:var(--silver)}.conversation{flex:1;padding:22px 14px 126px;position:relative;min-height:55vh}.ghost{position:fixed;z-index:0;right:-18px;top:145px;width:min(78vw,520px);height:min(78vw,520px);opacity:.055;pointer-events:none}.ghost svg{width:100%;height:100%;fill:none;stroke:#fff;stroke-width:8}.messages{position:relative;z-index:1;display:flex;flex-direction:column;gap:8px}.bubble{max-width:82%;padding:10px 13px;border-radius:19px;line-height:1.35;box-shadow:0 1px 0 rgba(255,255,255,.03);word-wrap:break-word;white-space:pre-wrap}.bubble.mine{align-self:flex-end;background:var(--outgoing);border-bottom-right-radius:6px}.bubble.theirs{align-self:flex-start;background:var(--incoming);border-bottom-left-radius:6px}.meta{font-size:10px;color:#c7c7c1;opacity:.7;margin-top:5px}.media-button{margin-top:4px;border:1px solid rgba(255,255,255,.18);background:transparent;color:#fff;padding:9px 11px;border-radius:12px;max-width:100%;text-align:left}.media-preview{display:block;max-width:min(100%,440px);max-height:460px;border-radius:12px;margin-top:7px}.composer{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:min(760px,100%);padding:10px 10px calc(10px + env(safe-area-inset-bottom));background:rgba(27,28,29,.97);border-top:1px solid var(--line);z-index:10}.compose-row{display:flex;align-items:flex-end;gap:8px}.plus,.mic,.send{width:38px;height:38px;flex:0 0 38px;border-radius:50%;border:0;font-size:24px;background:transparent;color:var(--silver)}.send{background:var(--silver);color:#222;font-size:18px}.msgbox{flex:1;min-height:40px;max-height:120px;resize:none;border-radius:20px;border:1px solid var(--line);background:var(--panel);color:#fff;padding:10px 14px;font:inherit;outline:none}.attach-menu{display:none;gap:8px;padding:7px 45px 3px}.attach-menu.open{display:flex;flex-wrap:wrap}.attach-menu label{background:var(--panel);border:1px solid var(--line);padding:8px 11px;border-radius:12px;font-size:13px;cursor:pointer}.attach-menu input{display:none}.empty{text-align:center;color:var(--muted);padding:100px 20px 0}.admin-wrap{max-width:900px;margin:30px auto;padding:0 18px}.admin-wrap.narrow{max-width:620px}.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:18px;margin:14px 0}.field{display:flex;flex-direction:column;gap:5px;margin:10px 0}.field input,.field select,.field textarea,.inline-form input{background:#171819;color:#fff;border:1px solid var(--line);padding:11px;border-radius:10px;font:inherit}.field textarea{width:100%;word-break:break-all}.btn{border:0;border-radius:10px;padding:10px 14px;background:var(--silver);color:#171819;font-weight:600;text-decoration:none;display:inline-block;cursor:pointer}.btn.secondary{background:#3a3b3e;color:#fff;border:1px solid var(--line)}.smallbtn{padding:8px 10px}.small{font-size:12px;color:var(--muted)}.error{color:#f0aaaa}.hidden{display:none!important}.text-link{color:var(--silver);display:inline-block;margin-top:14px}.topline,.client-card{display:flex;align-items:center;justify-content:space-between;gap:15px}.linkbtn{border:0;background:none;color:var(--muted);text-decoration:underline;cursor:pointer}.status{font-size:12px;color:var(--muted)}.admin-tools{padding:0 12px;border-bottom:1px solid var(--line)}.admin-tools details{padding:8px 0}.admin-tools summary{cursor:pointer;color:var(--muted)}.inline-form{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}.danger-btn{border:1px solid var(--danger);color:#ffdada;background:transparent;border-radius:10px;padding:9px 12px}.recording,.composer-status{font-size:12px;color:var(--muted);padding:5px 47px 0}.recording button{margin-left:8px}.key-error{border:1px solid #7d5d5d;background:#332929;padding:16px;border-radius:12px;color:#f2dede}.security-note{font-size:11px;color:var(--muted);margin-top:8px}@media(min-width:700px){.conversation{padding-left:30px;padding-right:30px}.bubble{max-width:68%}}

/* ---------- v0.4 visual-contract demo ---------- */
.demo-app{width:min(100%,430px);min-height:100vh;margin:0 auto;background:#0f1417;color:#f3f1ec;position:relative;overflow:hidden;box-shadow:0 0 70px rgba(0,0,0,.45)}
.demo-app button,.demo-app input{font:inherit}.demo-home,.demo-chat-screen{min-height:100vh;padding-bottom:76px;background:linear-gradient(180deg,#10171a 0%,#091013 100%)}
.demo-brandbar{height:78px;display:flex;align-items:center;gap:11px;padding:14px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
.demo-feather{font:36px Georgia,serif;color:#d7d8d4;transform:rotate(-22deg)}.demo-wordmark{font:24px Georgia,serif;letter-spacing:.03em}.demo-brandline{font-size:8px;letter-spacing:.2em;color:#8f9697;margin-top:3px}
.demo-icon-btn{margin-left:auto;border:0;background:transparent;color:#ddd;font-size:20px}.demo-motto{text-align:center;padding:11px 12px 5px;color:#d7d4cd;font:12px Georgia,serif}.demo-motto em{display:block;color:#777f80;font-size:10px;margin-top:2px}
.demo-search{margin:10px 18px 12px;padding:13px 14px;border-radius:13px;background:#20292e;color:#aeb5b7;font-size:14px}
.demo-client-card{width:calc(100% - 36px);margin:0 18px 8px;display:flex;align-items:center;gap:13px;padding:8px 0 12px;border:0;border-bottom:1px solid rgba(255,255,255,.09);background:transparent;color:#fff;text-align:left}.demo-client-card img{width:63px;height:63px;border-radius:50%;object-fit:cover}.demo-client-copy{display:flex;flex-direction:column;gap:4px}.demo-client-copy strong{font:21px Georgia,serif}.demo-client-copy small{color:#8e9697}.demo-chevron{margin-left:auto;font-size:32px;font-weight:200;color:#ddd}
.demo-subjects{display:flex;gap:10px;padding:12px 18px 13px;overflow-x:auto}.demo-subject{min-width:72px;border:0;background:transparent;color:#f1efea;display:flex;flex-direction:column;align-items:center;gap:6px;font-size:12px}.demo-subject img,.demo-all-avatar{width:58px;height:58px;border-radius:50%;object-fit:cover;border:1px solid #41494d}.demo-all-avatar{display:grid;place-items:center;background:#29343a;font-size:26px}.demo-subject.active img,.demo-subject.active .demo-all-avatar{outline:2px solid #e6e4df;outline-offset:2px}
.demo-thread-list{margin:0 18px;border-top:1px solid rgba(255,255,255,.08)}.demo-thread-row{width:100%;display:grid;grid-template-columns:52px 1fr auto;gap:12px;align-items:center;padding:12px 0;border:0;border-bottom:1px solid rgba(255,255,255,.08);background:transparent;color:#fff;text-align:left}.demo-thread-row img{width:50px;height:50px;border-radius:50%;object-fit:cover}.demo-thread-row span{display:flex;flex-direction:column;gap:4px}.demo-thread-row strong{font-size:16px}.demo-thread-row small{color:#b1b6b7;font-size:13px}.demo-thread-row time{font-size:11px;color:#b5b9b9;align-self:start;margin-top:4px}
.demo-bottom-nav{position:absolute;bottom:0;left:0;right:0;height:67px;display:flex;background:#0d1316;border-top:1px solid rgba(255,255,255,.09);z-index:3}.demo-bottom-nav button{flex:1;border:0;background:transparent;color:#8c9496;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;font-size:10px}.demo-bottom-nav button b{font-size:19px;font-weight:400}.demo-bottom-nav button.active{color:#fff}
.demo-chat-header{height:76px;display:grid;grid-template-columns:32px 48px 1fr auto;gap:8px;align-items:center;padding:13px 14px;border-bottom:1px solid rgba(255,255,255,.08)}.demo-back{border:0;background:transparent;color:#fff;font-size:34px;padding:0}.demo-chat-header img{width:45px;height:45px;border-radius:50%;object-fit:cover}.demo-chat-header div{display:flex;flex-direction:column}.demo-chat-header strong{font-size:17px}.demo-chat-header small{font-size:11px;color:#aab0b1;margin-top:2px}.demo-chat-actions{font-size:18px;color:#d5d7d5}
.demo-chat-tabs{display:flex;gap:6px;padding:10px 12px;border-bottom:1px solid rgba(255,255,255,.07);overflow-x:auto}.demo-chat-tabs button{flex:1;min-width:70px;border:1px solid #394247;border-radius:18px;padding:8px;background:transparent;color:#eee}.demo-chat-tabs button.active{background:#d9dbd7;color:#13181a;border-color:#d9dbd7}
.demo-messages{height:calc(100vh - 207px);overflow-y:auto;padding:14px 13px 98px;display:flex;flex-direction:column;gap:9px}.demo-bubble{max-width:80%;padding:10px 12px;border-radius:15px;font-size:14px;line-height:1.4}.demo-bubble.them{align-self:flex-start;background:#2a343a;border-bottom-left-radius:4px}.demo-bubble.me{align-self:flex-end;background:#37434a;border-bottom-right-radius:4px}.demo-bubble time{display:block;text-align:right;color:#b3b8b8;font-size:9px;margin-top:4px}.demo-media-card{align-self:flex-end;width:84%;overflow:hidden;border-radius:16px;background:#2a343a}.demo-media-card img{display:block;width:100%;max-height:270px;object-fit:cover}.demo-media-card p{margin:0;padding:10px 12px;font-size:13px;line-height:1.4}.demo-voice{align-self:flex-end;width:78%;display:flex;align-items:center;gap:10px;padding:11px 13px;border-radius:15px;background:#263137;font-size:12px}.demo-wave{flex:1;letter-spacing:1px;color:#bbc2c3}
.demo-attach-panel{position:absolute;left:12px;right:12px;bottom:70px;display:grid;grid-template-columns:repeat(3,1fr);gap:15px;padding:18px;border-radius:22px;background:#11191d;border:1px solid #30393d;box-shadow:0 18px 40px rgba(0,0,0,.5);z-index:8}.demo-attach-panel button{border:0;background:transparent;color:#fff;display:flex;flex-direction:column;align-items:center;gap:7px;font-size:24px}.demo-attach-panel button span{font-size:11px;color:#d7d9d7}
.demo-compose{position:absolute;left:0;right:0;bottom:0;height:68px;padding:9px 10px calc(9px + env(safe-area-inset-bottom));display:flex;align-items:center;gap:7px;background:#0c1215;border-top:1px solid rgba(255,255,255,.09);z-index:7}.demo-compose button{width:40px;height:40px;border-radius:50%;border:0;background:#222d32;color:#fff;font-size:21px}.demo-compose input{min-width:0;flex:1;height:40px;border-radius:20px;border:1px solid #333e43;background:#192226;color:#fff;padding:0 13px;outline:none}.demo-compose .demo-send{background:#d6d7d2;color:#11171a}.demo-test-badge{position:fixed;top:5px;left:50%;transform:translateX(-50%);z-index:99;padding:3px 7px;border-radius:8px;background:rgba(0,0,0,.54);color:#8e9697;font-size:7px;letter-spacing:.16em;pointer-events:none}.hidden{display:none!important}
@media(min-width:700px){body{background:#090d0f}.demo-app{min-height:900px;margin-top:18px;border-radius:34px;border:1px solid #3c4549}.demo-home,.demo-chat-screen{min-height:900px}.demo-messages{height:690px}.demo-test-badge{position:absolute}}

/* Cross-device viewport fix: keep chat composer inside visible screen */
.demo-app{
  height:100vh;
  height:100dvh;
  min-height:0;
}

.demo-chat-screen{
  height:100%;
  min-height:0;
  padding-bottom:0;
  display:flex;
  flex-direction:column;
  overflow:hidden;
}

.demo-chat-header,
.demo-chat-tabs,
.demo-compose{
  flex-shrink:0;
}

.demo-messages{
  flex:1 1 auto;
  height:auto;
  min-height:0;
  overflow-y:auto;
  padding-bottom:14px;
}

.demo-compose{
  position:relative;
  left:auto;
  right:auto;
  bottom:auto;
  height:auto;
  min-height:68px;
  padding-bottom:max(9px, env(safe-area-inset-bottom));
}

@media(min-width:700px){
  .demo-app{
    height:calc(100dvh - 36px);
    min-height:0;
    max-height:900px;
  }

  .demo-chat-screen{
    min-height:0;
  }

  .demo-messages{
    height:auto;
  }
}