:root{
  --bg:#f7f7f4;
  --rail:#efeee9;
  --panel:#ffffff;
  --text:#1f2328;
  --muted:#6b7280;
  --line:#ddddda;
  --soft:#f4f4f1;
  --accent:#166534;
  --blue:#2563eb;
  --warn:#b45309;
  --bad:#dc2626;
  --shadow:0 18px 50px rgba(24,28,34,.10);
}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);font:15px/1.5 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.chat-app{min-height:100vh;display:grid;grid-template-columns:280px minmax(0,1fr)}
.rail{background:var(--rail);border-right:1px solid var(--line);padding:14px;display:flex;flex-direction:column;gap:16px;min-height:100vh;position:sticky;top:0}
.rail-brand{display:flex;align-items:center;gap:10px;min-height:44px}
.rail-brand img{width:34px;height:34px;border-radius:8px;background:#fff}
.rail-brand b{display:block;font-size:14px;color:#161a20}.rail-brand span{display:block;font-size:12px;color:var(--muted)}
.rail-nav{display:grid;gap:6px}
.rail-nav span{padding:2px 4px 0;color:#7a828e;font-size:12px;font-weight:850}
.rail-nav a{display:flex;align-items:center;min-height:38px;padding:8px 10px;border-radius:8px;color:#2b3037;text-decoration:none;font-weight:750}
.rail-nav a:hover,.rail-nav a[aria-current="page"]{background:#fff;box-shadow:0 1px 0 rgba(0,0,0,.04)}
.recent-block{min-height:0;display:flex;flex-direction:column;gap:10px;overflow:hidden}
.recent-head{display:flex;align-items:center;justify-content:space-between;color:#3f4651;font-size:13px;padding:0 4px}
.recent-head span{display:grid;place-items:center;min-width:24px;height:24px;border-radius:999px;background:#fff;color:#596170;font-weight:800}
.recent-list{display:grid;gap:7px;overflow:auto;padding-right:2px}
.recent-item{border:0;background:transparent;text-align:left;border-radius:8px;padding:9px;color:#2e343d;display:grid;gap:3px}
.recent-item:hover{background:#fff}.recent-item strong{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.recent-item span{font-size:12px;color:var(--muted)}
.chat-main{height:100vh;display:grid;grid-template-rows:auto minmax(0,1fr) auto;background:var(--bg)}
.chat-header{height:58px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:10px 22px;background:rgba(247,247,244,.94);backdrop-filter:blur(10px);z-index:2}
.chat-header h1{margin:0;font-size:18px;line-height:1.1;letter-spacing:0}.chat-header span{display:block;color:var(--muted);font-size:12px;margin-top:3px}
.status-pill{display:inline-flex!important;align-items:center;min-height:28px;border-radius:999px;padding:4px 10px;font-size:12px!important;font-weight:850;margin:0!important;white-space:nowrap}
.status-pill.ok{background:#e7f5ec;color:var(--accent)}.status-pill.warn{background:#fff2d9;color:var(--warn)}
.message-list{overflow:auto;padding:24px 24px 190px;scroll-behavior:smooth}
.empty-state{height:100%;min-height:280px;display:grid;place-items:center;color:#4b5563}.empty-state h2{font-size:32px;letter-spacing:0;margin:0;color:#272b31}
.msg{width:min(860px,100%);margin:0 auto 18px;display:grid;grid-template-columns:36px minmax(0,1fr);gap:12px;align-items:start}
.avatar{width:36px;height:36px;border-radius:999px;display:grid;place-items:center;font-weight:900;background:#e1e7ef;color:#263244}.msg.user .avatar{background:#111827;color:#fff}.msg.assistant .avatar{background:#dff1e6;color:#166534}
.bubble{min-width:0}.bubble-text{white-space:pre-wrap;word-break:break-word;color:#20242a;font-size:15px}
.bubble-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:8px;color:var(--muted);font-size:12px}
.job-card{margin-top:8px;background:var(--panel);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);overflow:hidden}
.job-top{display:flex;justify-content:space-between;gap:10px;align-items:center;padding:12px 14px;border-bottom:1px solid #ececea}
.job-top>div{display:grid;gap:2px;min-width:0}
.job-top b{font-size:14px}.job-top span{font-size:12px;color:var(--muted)}
.job-status{display:inline-flex;align-items:center;min-height:26px;border-radius:999px;padding:3px 9px;background:#eef2f7;color:#475569;font-size:12px;font-weight:850}
.job-status.running,.job-status.queued{background:#fff4df;color:var(--warn)}.job-status.done{background:#e7f5ec;color:var(--accent)}.job-status.failed{background:#fee2e2;color:var(--bad)}
.job-body{padding:14px;display:grid;gap:12px}
.progress{height:8px;background:#e8e8e4;border-radius:999px;overflow:hidden}.progress span{display:block;height:100%;width:0;background:var(--accent);transition:width .25s ease}
.result-image{display:block;width:100%;max-height:70vh;object-fit:contain;background:#111827;border-radius:8px;border:1px solid #e5e7eb}
.job-actions{display:flex;gap:8px;flex-wrap:wrap}.job-actions a,.job-actions button{display:inline-flex;align-items:center;justify-content:center;min-height:36px;padding:7px 12px;border-radius:8px;border:1px solid #d9ded7;background:#fff;color:#27313d;text-decoration:none;font-weight:800}.job-actions a:hover,.job-actions button:hover{border-color:#86ad93;color:#166534}
.branch-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px}.branch-row input{border:1px solid #d9ded7;border-radius:8px;min-height:38px;padding:8px 10px;background:#fff;outline:none}.branch-row input:focus{border-color:#86ad93;box-shadow:0 0 0 3px rgba(22,101,52,.10)}.branch-row button{border:0;border-radius:8px;background:#166534;color:#fff;font-weight:900;padding:8px 12px;min-height:38px}
.skill-response{border-top:1px solid #ececea;padding-top:10px}.skill-response summary{cursor:pointer;font-weight:850;color:#3d4651}.skill-response pre{max-height:240px;overflow:auto;white-space:pre-wrap;word-break:break-word;background:#111827;color:#e5e7eb;border-radius:8px;padding:12px;font-size:12px;margin:8px 0 0}
.error-text{color:var(--bad);font-weight:750;white-space:pre-wrap;word-break:break-word}
.composer{position:fixed;left:280px;right:0;bottom:0;padding:12px 24px 18px;background:var(--bg);border-top:1px solid rgba(221,221,218,.78)}
.composer::before{content:"";display:none}
.attach-preview{width:min(860px,100%);margin:0 auto 8px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:7px 8px;display:flex;align-items:center;justify-content:space-between;gap:10px;box-shadow:0 8px 26px rgba(24,28,34,.06)}
.attach-preview span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#374151;font-weight:750}.attach-preview button{border:0;background:#f3f4f6;border-radius:8px;min-height:30px;padding:5px 10px;font-weight:800;color:#374151}
.composer-row{width:min(860px,100%);margin:0 auto;background:#fff;border:1px solid #d6d6d2;border-radius:8px;box-shadow:0 16px 44px rgba(24,28,34,.12);display:grid;grid-template-columns:40px minmax(0,1fr) auto;gap:8px;align-items:end;padding:8px}
.icon-btn,.send-btn{border:0;border-radius:8px;min-height:40px;font-weight:900}.icon-btn{background:#f0f2f2;color:#20242a;font-size:24px;line-height:1}.send-btn{background:#111827;color:#fff;padding:8px 16px}.send-btn:disabled{opacity:.58;cursor:not-allowed}
#promptInput{resize:none;max-height:160px;min-height:40px;border:0;outline:0;padding:9px 4px;background:transparent;color:var(--text);line-height:1.45}
.composer-options{width:min(860px,100%);margin:8px auto 0;display:flex;gap:8px;flex-wrap:wrap;align-items:center;color:var(--muted)}
.composer-options label{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:800}.composer-options select{border:1px solid #d8ddd5;background:#fff;border-radius:8px;min-height:32px;padding:4px 8px;color:#374151;outline:none}
.locked .composer,.locked .message-list{filter:blur(1px);pointer-events:none;user-select:none}
.gate-dialog{border:0;border-radius:8px;padding:0;width:min(360px,calc(100vw - 28px));box-shadow:0 24px 80px rgba(0,0,0,.32)}
.gate-dialog::backdrop{background:rgba(15,23,42,.52);backdrop-filter:blur(5px)}
.gate-card{display:grid;gap:14px;background:#fff;border:1px solid #e5e7eb;padding:20px;border-radius:8px}
.gate-card h2{margin:0;color:#111827;font-size:20px;letter-spacing:0}.gate-card p{margin:4px 0 0;color:#6b7280;font-size:13px}
.gate-card input{width:100%;border:1px solid #d6d8dd;border-radius:8px;min-height:48px;padding:8px 12px;text-align:center;font-size:28px;font-weight:900;letter-spacing:.22em;outline:none}.gate-card input:focus{border-color:#166534;box-shadow:0 0 0 4px rgba(22,101,52,.12)}
.gate-card button{border:0;border-radius:8px;background:#111827;color:#fff;font-weight:900;min-height:42px;padding:8px 14px}.gate-card button:disabled{opacity:.6;cursor:not-allowed}
.gate-message{min-height:20px;color:#dc2626;font-size:13px;font-weight:750;text-align:center}
.hidden{display:none!important}
@media(max-width:820px){
  .chat-app{grid-template-columns:1fr}.rail{display:none}.chat-main{height:100vh}.composer{left:0;padding:10px 12px 14px}.message-list{padding:18px 12px 190px}.chat-header{padding:10px 14px}.msg{grid-template-columns:32px minmax(0,1fr);gap:9px}.avatar{width:32px;height:32px}.empty-state h2{font-size:28px}.branch-row{grid-template-columns:1fr}.branch-row button{width:100%}
}