:root{
  --bg:#0a0a0c; --bg-2:#101013; --bg-3:#16161b; --panel:#121217;
  --line:#26262e; --line-2:#34343f;
  --text:#e9e8e4; --text-dim:#9a9aa3; --text-faint:#65656e;
  --accent:#e0563f; --accent-soft:#e0563f22; --gold:#c9a227;
  --ok:#5bb26a; --bad:#d65a5a;
  --radius:14px; --radius-sm:9px;
  --mono:'JetBrains Mono',ui-monospace,monospace;
  --body:'Hanken Grotesk',system-ui,sans-serif;
  --display:'Bricolage Grotesque',var(--body);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:var(--body); background:var(--bg); color:var(--text);
  font-size:15px; line-height:1.55; overflow:hidden;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(60% 80% at 80% -10%, #1a1410 0%, transparent 55%),
    radial-gradient(50% 60% at -10% 110%, #101418 0%, transparent 55%);
}
body::before{ /* grain */
  content:''; position:fixed; inset:0; pointer-events:none; z-index:9999; opacity:.025;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.hidden{display:none !important}
button{font-family:inherit;cursor:pointer;color:inherit;background:none;border:none}
input,textarea{font-family:inherit;color:inherit}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:6px}
.brand-mark{color:var(--accent)}
.mobile-only{display:none}

/* ── LOGIN ── */
.login{position:fixed;inset:0;display:grid;place-items:center;z-index:100;
  background:radial-gradient(60% 60% at 50% 30%,#16110e,#0a0a0c)}
.login-card{width:min(360px,90vw);text-align:center;padding:38px 30px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:0 30px 80px #000a}
.login-card .brand-mark{font-size:34px;display:block;margin-bottom:8px}
.login-card h1{font-family:var(--display);font-weight:800;font-size:24px;letter-spacing:-.02em}
.login-sub{color:var(--text-faint);font-size:13px;margin-bottom:22px}
.login-card input{width:100%;padding:12px 14px;background:var(--bg-2);
  border:1px solid var(--line);border-radius:var(--radius-sm);font-size:15px;margin-bottom:12px}
.login-card input:focus{outline:none;border-color:var(--accent)}
.login-card button{width:100%;padding:12px;background:var(--accent);color:#fff;
  border-radius:var(--radius-sm);font-weight:600;font-size:15px;transition:.15s}
.login-card button:hover{filter:brightness(1.08)}
.login-err{color:var(--bad);font-size:13px;margin-top:10px;min-height:16px}

/* ── APP LAYOUT ── */
.app{display:grid;grid-template-columns:282px 1fr;height:100vh;height:100dvh}

/* ── SIDEBAR ── */
.sidebar{background:var(--bg-2);border-right:1px solid var(--line);
  display:flex;flex-direction:column;min-height:0}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;
  padding:16px 16px 8px}
.brand{font-family:var(--display);font-weight:800;font-size:16px;letter-spacing:-.01em}
.new-chat{margin:6px 14px 10px;padding:11px;background:var(--bg-3);
  border:1px solid var(--line);border-radius:var(--radius-sm);font-weight:600;
  text-align:left;transition:.15s}
.new-chat:hover{border-color:var(--accent);background:var(--accent-soft)}
.search-wrap{padding:0 14px 10px}
.search-wrap input{width:100%;padding:9px 12px;background:var(--bg);
  border:1px solid var(--line);border-radius:var(--radius-sm);font-size:13.5px}
.search-wrap input:focus{outline:none;border-color:var(--line-2)}
.conv-list{flex:1;overflow-y:auto;padding:4px 10px;min-height:0}
.conv-item{padding:9px 11px;border-radius:var(--radius-sm);cursor:pointer;
  display:flex;align-items:center;gap:8px;color:var(--text-dim);
  font-size:14px;white-space:nowrap;overflow:hidden;position:relative}
.conv-item:hover{background:var(--bg-3);color:var(--text)}
.conv-item.active{background:var(--bg-3);color:var(--text)}
.conv-item .title{overflow:hidden;text-overflow:ellipsis;flex:1}
.conv-item .del{opacity:0;font-size:12px;color:var(--text-faint);padding:2px 6px}
.conv-item:hover .del{opacity:1}
.conv-item .del:hover{color:var(--bad)}
.conv-snip{font-size:11.5px;color:var(--text-faint);font-family:var(--mono)}
.sidebar-foot{display:flex;gap:4px;padding:10px 12px;border-top:1px solid var(--line)}
.foot-btn{flex:1;padding:9px 4px;font-size:12px;color:var(--text-dim);
  border-radius:var(--radius-sm);transition:.15s}
.foot-btn:hover{background:var(--bg-3);color:var(--text)}
.scrim{display:none}

/* ── MAIN ── */
.main{display:flex;flex-direction:column;min-width:0;min-height:0}
.topbar{display:flex;align-items:center;gap:14px;padding:11px 18px;
  border-bottom:1px solid var(--line);background:#0b0b0eaa;backdrop-filter:blur(8px)}
.mode-switch{display:flex;gap:2px;background:var(--bg-2);padding:3px;
  border-radius:10px;border:1px solid var(--line);overflow:auto}
.mode-switch button{padding:7px 13px;font-size:13px;border-radius:7px;
  color:var(--text-dim);white-space:nowrap;transition:.12s}
.mode-switch button:hover{color:var(--text)}
.mode-switch button.active{background:var(--accent);color:#fff;font-weight:600}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.cost-meter{font-family:var(--mono);font-size:12.5px;color:var(--gold);
  background:var(--bg-2);padding:6px 11px;border-radius:8px;border:1px solid var(--line)}
.icon-btn{width:36px;height:36px;border-radius:9px;font-size:16px;color:var(--text-dim);
  display:grid;place-items:center;transition:.15s}
.icon-btn:hover{background:var(--bg-3);color:var(--text)}

/* ── THREAD ── */
.thread{flex:1;overflow-y:auto;padding:24px 0 8px;min-height:0;overflow-anchor:none}
.empty-state{text-align:center;max-width:480px;margin:8vh auto;color:var(--text-dim)}
.empty-state .brand-mark.big{font-size:46px;display:block;margin-bottom:14px;opacity:.7}
.empty-state h2{font-family:var(--display);font-weight:700;color:var(--text);
  font-size:26px;letter-spacing:-.02em;margin-bottom:8px}
.roster-preview{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:22px}
.roster-chip{font-size:12.5px;font-family:var(--mono);padding:6px 12px;border-radius:20px;
  border:1px solid var(--line);background:var(--bg-2)}
.roster-chip .dot{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:6px}

.msg-row{max-width:820px;margin:0 auto;padding:6px 22px}
.msg.user{display:flex;justify-content:flex-end;margin:14px auto}
.msg.user .bubble{background:var(--bg-3);border:1px solid var(--line);
  padding:11px 15px;border-radius:14px 14px 4px 14px;max-width:82%}
.msg.user .imgs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}
.msg.user .imgs img{max-width:140px;max-height:140px;border-radius:8px;border:1px solid var(--line)}

.agent-block{margin:16px auto;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--panel);overflow:hidden;border-left:3px solid var(--ac,var(--accent))}
.agent-head{display:flex;align-items:center;gap:9px;padding:9px 15px;
  border-bottom:1px solid var(--line);background:#ffffff04}
.agent-name{font-weight:700;font-size:13.5px}
.agent-model{font-family:var(--mono);font-size:11px;color:var(--text-faint)}
.agent-dot{width:9px;height:9px;border-radius:50%;background:var(--ac,var(--accent))}
.agent-meta{margin-left:auto;font-family:var(--mono);font-size:11px;color:var(--text-faint)}
.agent-body{padding:13px 16px;font-size:14.5px}
.agent-body p{margin:0 0 10px}
.agent-body p:last-child{margin-bottom:0}
.agent-body pre{background:var(--bg);border:1px solid var(--line);border-radius:8px;
  padding:12px;overflow-x:auto;margin:10px 0;font-family:var(--mono);font-size:12.5px}
.agent-body code{font-family:var(--mono);font-size:.88em;background:var(--bg);
  padding:1px 5px;border-radius:4px}
.agent-body pre code{background:none;padding:0}
.agent-body ul,.agent-body ol{margin:8px 0 8px 20px}
.agent-body a{color:var(--accent)}
.reasoning{border-top:1px dashed var(--line);background:#ffffff03}
.reasoning summary{padding:8px 16px;cursor:pointer;font-size:12px;
  color:var(--text-faint);font-family:var(--mono);user-select:none}
.reasoning summary:hover{color:var(--text-dim)}
.reasoning-content{padding:4px 16px 13px;font-size:13px;color:var(--text-dim);
  white-space:pre-wrap;font-family:var(--mono);line-height:1.5}
.cursor-blink::after{content:'▋';color:var(--ac,var(--accent));animation:blink 1s steps(2) infinite;margin-left:1px}
@keyframes blink{50%{opacity:0}}
.round-divider{max-width:820px;margin:18px auto 4px;padding:0 22px;text-align:center}
.round-divider span{font-family:var(--mono);font-size:11px;color:var(--text-faint);
  border-top:1px solid var(--line);display:block;padding-top:10px}
.mem-flash{max-width:820px;margin:6px auto;padding:0 22px}
.mem-flash span{font-size:11.5px;color:var(--gold);font-family:var(--mono)}

/* ── COMPOSER ── */
.composer{border-top:1px solid var(--line);padding:12px 18px calc(12px + env(safe-area-inset-bottom));
  background:var(--bg-2)}
.img-tray{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:8px;max-width:820px;margin-inline:auto}
.img-tray:empty{display:none}
.img-thumb{position:relative;width:56px;height:56px;border-radius:8px;overflow:hidden;border:1px solid var(--line)}
.img-thumb img{width:100%;height:100%;object-fit:cover}
.img-thumb button{position:absolute;top:2px;right:2px;background:#000a;width:18px;height:18px;
  border-radius:50%;font-size:11px;display:grid;place-items:center}
.composer-row{display:flex;align-items:flex-end;gap:8px;max-width:820px;margin:0 auto;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:7px 9px}
.composer-row:focus-within{border-color:var(--line-2)}
#input{flex:1;background:none;border:none;resize:none;font-size:15px;
  max-height:200px;padding:7px 4px;line-height:1.5}
#input:focus{outline:none}
.send-btn,.stop-btn{width:38px;height:38px;border-radius:10px;font-size:17px;
  display:grid;place-items:center;flex-shrink:0;transition:.15s}
.send-btn{background:var(--accent);color:#fff}
.send-btn:hover{filter:brightness(1.1)}
.send-btn:disabled{opacity:.4;cursor:default}
.stop-btn{background:var(--bad);color:#fff;font-size:13px}

/* ── MODAL ── */
.modal{position:fixed;inset:0;background:#000a;z-index:80;display:grid;place-items:center;
  padding:18px;backdrop-filter:blur(3px)}
.modal-card{width:min(680px,100%);max-height:88vh;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--radius);display:flex;flex-direction:column;
  box-shadow:0 30px 90px #000c}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;
  border-bottom:1px solid var(--line)}
.modal-head h2{font-family:var(--display);font-weight:700;font-size:19px}
.modal-tabs{display:flex;gap:4px;padding:10px 16px;border-bottom:1px solid var(--line)}
.modal-tabs button{padding:8px 16px;border-radius:8px;font-size:13.5px;color:var(--text-dim)}
.modal-tabs button.active{background:var(--bg-3);color:var(--text);font-weight:600}
.modal-body{overflow-y:auto;padding:18px 20px}

/* settings rows */
.set-row{display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:13px 0;border-bottom:1px solid var(--line)}
.set-row:last-child{border:none}
.set-label{font-size:14px}
.set-desc{font-size:12px;color:var(--text-faint);margin-top:2px}
.switch{width:44px;height:25px;border-radius:20px;background:var(--line-2);position:relative;
  transition:.18s;flex-shrink:0}
.switch.on{background:var(--accent)}
.switch::after{content:'';position:absolute;top:3px;left:3px;width:19px;height:19px;
  border-radius:50%;background:#fff;transition:.18s}
.switch.on::after{left:22px}
.set-select,.set-input{background:var(--bg-2);border:1px solid var(--line);
  border-radius:8px;padding:8px 10px;font-size:13px;font-family:var(--mono);max-width:230px}
.set-select:focus,.set-input:focus{outline:none;border-color:var(--accent)}

/* agents editor */
.agent-card{border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px;margin-bottom:12px;background:var(--bg-2)}
.agent-card-top{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.agent-card-top input.aname{font-size:15px;font-weight:600;background:none;border:none;flex:1}
.agent-card-top input.aname:focus{outline:none}
.agent-field{margin-bottom:10px}
.agent-field label{display:block;font-size:11.5px;color:var(--text-faint);
  font-family:var(--mono);margin-bottom:4px;text-transform:uppercase;letter-spacing:.05em}
.agent-field input,.agent-field select,.agent-field textarea{width:100%;background:var(--bg);
  border:1px solid var(--line);border-radius:7px;padding:8px 10px;font-size:13px}
.agent-field textarea{resize:vertical;min-height:54px;font-size:13px}
.agent-field input:focus,.agent-field select:focus,.agent-field textarea:focus{outline:none;border-color:var(--line-2)}
.agent-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.agent-actions{display:flex;justify-content:space-between;align-items:center;margin-top:6px}
.agent-del{font-size:12px;color:var(--text-faint)}
.agent-del:hover{color:var(--bad)}
.color-dot{width:26px;height:26px;border-radius:7px;border:1px solid var(--line);cursor:pointer;padding:0}
.btn-primary{background:var(--accent);color:#fff;padding:9px 16px;border-radius:8px;font-weight:600;font-size:13.5px}
.btn-ghost{border:1px solid var(--line);padding:9px 16px;border-radius:8px;font-size:13.5px;color:var(--text-dim)}
.btn-ghost:hover{border-color:var(--line-2);color:var(--text)}

/* memory list */
.mem-item{border:1px solid var(--line);border-radius:var(--radius-sm);padding:11px 13px;
  margin-bottom:9px;background:var(--bg-2);display:flex;gap:10px;align-items:flex-start}
.mem-cat{font-family:var(--mono);font-size:10px;text-transform:uppercase;padding:3px 7px;
  border-radius:5px;background:var(--bg-3);color:var(--text-dim);flex-shrink:0;letter-spacing:.05em}
.mem-content{flex:1;font-size:13.5px}
.mem-content[contenteditable]:focus{outline:1px solid var(--accent);border-radius:4px}
.mem-del{color:var(--text-faint);font-size:13px}
.mem-del:hover{color:var(--bad)}
.mem-add{display:flex;gap:8px;margin-bottom:16px}
.mem-add input{flex:1;background:var(--bg-2);border:1px solid var(--line);border-radius:8px;padding:9px 11px;font-size:13.5px}
.mem-add input:focus{outline:none;border-color:var(--accent)}

/* toast */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:200;
  background:var(--bg-3);border:1px solid var(--line-2);padding:11px 18px;border-radius:10px;
  font-size:13.5px;box-shadow:0 10px 30px #000a}

/* ── RESPONSIVE ── */
@media(max-width:760px){
  .app{grid-template-columns:1fr}
  .mobile-only{display:grid}
  .sidebar{position:fixed;left:0;top:0;bottom:0;width:min(86vw,300px);z-index:60;
    transform:translateX(-100%);transition:transform .22s}
  .sidebar.open{transform:none}
  .scrim{display:block;position:fixed;inset:0;background:#000a;z-index:55;opacity:0;
    pointer-events:none;transition:.2s}
  .scrim.show{opacity:1;pointer-events:auto}

  /* Topbar: hamburger + scrollable mode pills + cost, all on one tidy row */
  .topbar{gap:8px;padding:9px 10px}
  .mode-switch{flex:1;min-width:0;scrollbar-width:none}
  .mode-switch::-webkit-scrollbar{display:none}
  .mode-switch button{padding:7px 11px;font-size:12.5px}
  .cost-meter{font-size:11.5px;padding:5px 8px}

  /* Keep a comfortable gutter instead of edge-to-edge text */
  .msg-row{padding:6px 13px}
  .round-divider{padding:0 13px}
  .mem-flash{padding:0 13px}
  .composer{padding:10px 11px calc(10px + env(safe-area-inset-bottom))}
  .msg.user .bubble{max-width:88%}
  .agent-grid{grid-template-columns:1fr}

  /* Roomier modal on small screens */
  .modal{padding:0;place-items:end stretch}
  .modal-card{max-height:92vh;border-radius:var(--radius) var(--radius) 0 0;width:100%}
  .modal-tabs{overflow-x:auto;scrollbar-width:none}
  .modal-tabs::-webkit-scrollbar{display:none}
}

@media(max-width:420px){
  .mode-switch button{padding:6px 9px;font-size:12px}
  .agent-body{font-size:13.5px}
  .agent-head{padding:8px 12px}
  .agent-body{padding:12px 13px}
}

.reasoning-content { max-height: 220px; overflow-y: auto; }
.reasoning summary { font-size: 11px; letter-spacing: .04em; }
.agent-block + .agent-block { margin-top: 10px; }
.agent-body { font-size: 14px; line-height: 1.6; }
.agent-body p { margin-bottom: 8px; }
/* ── Thinking (Claude-style) ── */
.think-wrap { border-top: 1px dashed var(--line); }
.think-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 15px; cursor: pointer; user-select: none;
  font-family: var(--mono); font-size: 11.5px; color: var(--text-faint);
  transition: color .15s;
}
.think-bar:hover { color: var(--text-dim); }
.think-dot {
  width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0;
  background: var(--ac, var(--accent));
}
.think-dot.pulse { animation: tpulse 1.2s ease-in-out infinite; }
@keyframes tpulse { 0%,100%{opacity:.25} 50%{opacity:1} }
.think-dot.done { opacity: .4; animation: none; }
.think-chevron { margin-left: auto; font-size: 10px; transition: transform .2s; }
.think-wrap.open .think-chevron { transform: rotate(90deg); }
.think-content {
  display: none; padding: 6px 15px 13px;
  font-size: 12.5px; color: var(--text-dim); font-family: var(--mono);
  line-height: 1.5; white-space: pre-wrap;
  max-height: 240px; overflow-y: auto;
}
.think-wrap.open .think-content { display: block; }

/* ── Fast mode button ── */
.fast-btn { font-size: 17px; transition: background .15s, color .15s; }
.fast-btn.active { background: var(--gold); color: var(--bg); border-radius: 9px; }

/* ── Rich markdown in agent replies ── */
.agent-body h3{font-family:var(--display);font-weight:700;font-size:16px;
  letter-spacing:-.01em;margin:16px 0 8px;line-height:1.3}
.agent-body h4{font-family:var(--display);font-weight:700;font-size:14px;
  margin:14px 0 6px;color:var(--text)}
.agent-body h3:first-child,.agent-body h4:first-child{margin-top:0}
.agent-body blockquote{margin:10px 0;padding:6px 14px;border-left:3px solid var(--line-2);
  color:var(--text-dim);background:#ffffff04;border-radius:0 6px 6px 0}
.agent-body hr{border:none;border-top:1px solid var(--line);margin:16px 0}
.agent-body li{margin:3px 0}
.agent-body li>ul,.agent-body li>ol{margin:3px 0 3px 18px}

/* ── Final-answer / synthesis divider + block ── */
.round-divider.final span{color:var(--gold);font-weight:700;letter-spacing:.12em;
  border-top-color:var(--gold)}