:root{--bg:#0d1015;--panel:#151a22;--panel2:#1b222d;--line:#293342;--text:#edf2f7;--muted:#8f9cac;--accent:#a8f0ca;--accent2:#72d9ad;--danger:#ff9b9b;--shadow:0 18px 60px #0008}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 70% -20%,#1d4e4c55,transparent 34rem),var(--bg);color:var(--text);font:15px/1.5 ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.shell{min-height:100vh}.hidden{display:none!important}.login-card{width:min(440px,calc(100% - 32px));margin:10vh auto 0;padding:42px;background:linear-gradient(150deg,#19212a,#11161d);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}.brand-mark{color:var(--accent);font-size:38px;margin-bottom:18px}.eyebrow{margin:0 0 7px;color:var(--accent2);font-size:11px;font-weight:800;letter-spacing:.18em}.login-card h1{font-size:30px;line-height:1.1;margin:0 0 12px}.muted{color:var(--muted)}label{display:block;color:#c9d2dd;font-size:13px;margin-top:18px}input,textarea{width:100%;margin-top:7px;border:1px solid var(--line);border-radius:11px;background:#0f141b;color:var(--text);padding:12px 13px;font:inherit;outline:none}input:focus,textarea:focus{border-color:var(--accent2);box-shadow:0 0 0 3px #72d9ad20}button{font:inherit;cursor:pointer;border:0;color:var(--text)}.primary{background:var(--accent);color:#10221b;font-weight:800;border-radius:11px;padding:12px 18px}.primary:hover{background:#c4f8dd}.login-card .primary{width:100%;margin-top:24px}.error{min-height:22px;color:var(--danger);font-size:13px}.chat-layout{display:grid;grid-template-columns:310px minmax(0,1fr);height:100vh}.sidebar{display:flex;flex-direction:column;background:#11161d;border-right:1px solid var(--line);padding:25px 18px}.sidebar-head{display:flex;align-items:flex-start;justify-content:space-between}.sidebar h2{margin:0;font-size:21px}.ghost{background:transparent;color:var(--muted);font-size:12px;padding:5px}.ghost:hover{color:var(--text)}.new-chat{width:100%;text-align:left;background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:11px 13px;margin:25px 0 14px}.new-chat:hover{border-color:var(--accent2)}.conversation-list{overflow:auto}.conversation-item{display:block;width:100%;text-align:left;background:transparent;color:var(--muted);border-radius:9px;padding:10px 12px;margin:3px 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conversation-item:hover,.conversation-item.active{background:#202a35;color:var(--text)}.memory-box{margin-top:auto;border-top:1px solid var(--line);padding-top:18px}.section-title{display:flex;justify-content:space-between;font-weight:700;margin-bottom:9px}.tiny{font-size:11px;color:var(--muted)}.memory-form{display:flex;gap:6px}.memory-form input{margin:0;min-width:0;padding:8px 9px;font-size:12px}.memory-form button{background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:0 9px;font-size:12px}.memory-list{max-height:155px;overflow:auto;margin-top:10px}.memory-item{display:flex;gap:5px;align-items:flex-start;color:#bdc7d2;font-size:12px;border-bottom:1px solid #222b35;padding:7px 0}.memory-item span{flex:1}.memory-item button{background:transparent;color:var(--muted);font-size:17px;line-height:1}.chat-panel{display:flex;flex-direction:column;min-width:0}.chat-head{display:flex;justify-content:space-between;align-items:flex-start;padding:30px 5%;border-bottom:1px solid var(--line)}.chat-head h1{margin:0;font-size:22px}.badge{background:#18312b;color:var(--accent);padding:5px 9px;border-radius:99px;font-size:11px}.messages{flex:1;overflow:auto;padding:32px 10%;scroll-behavior:smooth}.empty-state{text-align:center;max-width:440px;margin:14vh auto;color:var(--muted)}.empty-state h2{color:var(--text);margin:16px 0 5px}.orb{display:inline-grid;place-items:center;width:55px;height:55px;border-radius:50%;background:#1d4439;color:var(--accent);font-size:28px}.message{max-width:820px;margin:0 auto 27px}.message-role{text-transform:uppercase;letter-spacing:.13em;color:var(--accent2);font-size:10px;font-weight:800;margin-bottom:6px}.message.user .message-role{color:#a3b3c5}.message-body{color:#e1e7ed;line-height:1.7;overflow-wrap:anywhere}.message.user .message-body{background:#1b2531;border:1px solid #2a3948;border-radius:12px;padding:12px 14px}.message-body code{background:#0b1015;padding:2px 5px;border-radius:4px;color:var(--accent)}.file-chip{display:inline-block;margin-top:10px;padding:5px 9px;border-radius:7px;background:#263544;color:#b6c8da;font-size:12px}.composer{width:min(900px,80%);margin:0 auto 28px;background:#151c25;border:1px solid var(--line);border-radius:15px;padding:11px 13px}.composer textarea{border:0;background:transparent;margin:0;resize:vertical;padding:3px;min-height:48px}.composer textarea:focus{box-shadow:none}.composer-actions{display:flex;align-items:center;gap:12px}.attach{margin:0;font-size:12px;color:var(--muted);cursor:pointer}.attach input{display:none}.hint{font-size:11px;color:#596878;margin-right:auto}.attachment-name{font-size:12px;color:var(--accent);padding:3px 4px}.chat-error{width:min(900px,80%);margin:-21px auto 10px}@media(max-width:800px){.chat-layout{grid-template-columns:1fr;height:auto;min-height:100vh}.sidebar{border-right:0;border-bottom:1px solid var(--line);padding:18px}.conversation-list{max-height:115px}.memory-box{margin-top:18px}.chat-panel{min-height:78vh}.chat-head{padding:20px}.messages{padding:22px 18px}.composer,.chat-error{width:calc(100% - 28px)}}
.sidebar{min-height:0}
.conversation-list{flex:1;min-height:120px;overflow-y:auto;overflow-x:hidden;border:1px solid var(--line);border-radius:10px;padding:5px 6px;background:#0d1218}