:root{--bg:#0a0a0c;--panel:#141417;--panel2:#0f0f12;--border:#26262c;--text:#e7e7ea;--muted:#8b8b96;--accent:#5eead4;--danger:#f87171;--warn:#fbbf24;}
*{box-sizing:border-box;}
html,body{height:100%;}
body{margin:0;font:15px/1.5 ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;}
.center{min-height:100vh;display:grid;place-items:center;}
.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:20px;}
.auth{width:380px;}
h1{font-size:20px;margin:0 0 4px;} h2{font-size:15px;margin:0 0 10px;}
p.sub{color:var(--muted);margin:0 0 18px;font-size:13px;}
label{display:block;font-size:12px;color:var(--muted);margin:12px 0 6px;}
input,textarea,select{width:100%;padding:10px 12px;background:#0e0e11;border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:14px;font-family:inherit;}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent);}
button{padding:10px 14px;background:var(--accent);color:#05201b;border:0;border-radius:8px;font-weight:600;font-size:14px;cursor:pointer;}
button:hover{filter:brightness(1.08);} button:disabled{opacity:.5;cursor:default;}
button.ghost{background:transparent;color:var(--text);border:1px solid var(--border);}
button.sm{padding:6px 11px;font-size:13px;}
.hidden{display:none!important;}
.err{color:var(--danger);font-size:13px;margin-top:10px;min-height:16px;}
.ok{color:var(--accent);}
.brand{font-weight:700;letter-spacing:.12em;font-size:13px;} .brand span{color:var(--accent);}
.shell{display:grid;grid-template-columns:280px 1fr;height:100vh;}
.sidebar{background:var(--panel2);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden;}
.sidebar .top{padding:16px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;}
.side-scroll{overflow:auto;flex:1;padding:10px;}
.side-section{margin-bottom:14px;}
.side-section h3{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:8px 6px;}
.item{padding:8px 10px;border-radius:8px;cursor:pointer;font-size:14px;display:flex;justify-content:space-between;align-items:center;gap:8px;}
.item:hover{background:#1b1b20;} .item.active{background:#20232a;color:#fff;}
.item .x{opacity:.4;font-size:12px;} .item .x:hover{opacity:1;color:var(--danger);}
.main{display:flex;flex-direction:column;overflow:hidden;}
.main .top{padding:14px 20px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;gap:12px;}
.main .body{flex:1;overflow:auto;padding:20px;}
.composer{border-top:1px solid var(--border);padding:14px 20px;}
.row{display:flex;gap:10px;align-items:center;}
.row.between{justify-content:space-between;}
.between{display:flex;justify-content:space-between;align-items:center;}
.grow{flex:1;}
table{width:100%;border-collapse:collapse;font-size:14px;} th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);}
th{color:var(--muted);font-weight:500;font-size:12px;text-transform:uppercase;letter-spacing:.06em;}
.pill{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;border:1px solid var(--border);color:var(--muted);}
.pill.admin{color:var(--accent);border-color:#1f4d44;} .pill.ok{color:var(--accent);border-color:#1f4d44;} .pill.bad{color:var(--danger);border-color:#4d1f1f;}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.6);display:grid;place-items:center;z-index:50;} .modal .card{width:520px;max-height:90vh;overflow:auto;}
.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:#0e0e11;border:1px solid var(--border);border-radius:8px;padding:12px;font-size:13px;white-space:pre-wrap;word-break:break-all;}
.msg{padding:12px 14px;border-radius:10px;margin-bottom:12px;max-width:80%;white-space:pre-wrap;word-wrap:break-word;}
.msg.user{background:#1c2733;margin-left:auto;border:1px solid #274156;}
.msg.assistant{background:var(--panel);border:1px solid var(--border);}
.msg.system{background:#1a1a12;border:1px solid #3d3d1f;color:var(--warn);font-size:13px;}
.msg.error{background:#2a1414;border:1px solid #4d1f1f;color:var(--danger);}
.empty{color:var(--muted);text-align:center;padding:60px 20px;}
.tag{font-size:11px;color:var(--muted);}
.toast{position:fixed;bottom:20px;right:20px;background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:12px 16px;font-size:13px;z-index:60;}