:root{--bg:#0f0f10;--panel:#171719;--soft:#222327;--text:#ececf1;--muted:#a8a8b3;--accent:#10a37f;--danger:#ff5c5c}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,Arial,sans-serif}.layout{display:grid;grid-template-columns:280px 1fr;min-height:100vh}.side{background:#111113;border-right:1px solid #2a2b30;padding:14px;display:flex;flex-direction:column;gap:10px}.brand{font-size:22px;font-weight:800;padding:8px 6px}.btn,a.btn,button{background:var(--accent);border:0;color:white;border-radius:12px;padding:11px 14px;cursor:pointer;text-decoration:none;font-weight:600}.btn.secondary{background:var(--soft)}.btn.danger{background:var(--danger)}.chat-list{overflow:auto;display:flex;flex-direction:column;gap:8px}.chat-item{display:block;color:#ddd;text-decoration:none;background:#1b1c20;border-radius:10px;padding:10px}.chat-item.active{outline:1px solid var(--accent)}.main{display:flex;flex-direction:column;min-width:0}.topbar{height:64px;border-bottom:1px solid #2a2b30;display:flex;align-items:center;justify-content:space-between;padding:0 18px;background:#151518}.messages{flex:1;overflow:auto;padding:22px;max-width:980px;width:100%;margin:0 auto}.msg{display:flex;gap:14px;padding:18px;border-bottom:1px solid #24252b;white-space:pre-wrap;line-height:1.6}.avatar{width:32px;height:32px;border-radius:50%;background:#303138;display:grid;place-items:center;font-weight:800;flex:0 0 32px}.composer{border-top:1px solid #2a2b30;padding:14px;background:#151518}.composer form{max-width:980px;margin:0 auto;display:flex;gap:10px}.composer textarea{flex:1;resize:none;min-height:48px;max-height:160px;border-radius:14px;border:1px solid #33343a;background:#202124;color:#fff;padding:14px;font-size:16px}.select,input{background:#202124;color:#fff;border:1px solid #33343a;border-radius:10px;padding:10px}.card{max-width:440px;margin:10vh auto;background:var(--panel);border:1px solid #2a2b30;border-radius:18px;padding:24px}.card input{width:100%;margin:8px 0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.stat{background:#1b1c20;border-radius:14px;padding:18px}.table{width:100%;border-collapse:collapse}.table td,.table th{border-bottom:1px solid #333;padding:10px;text-align:left}@media(max-width:800px){.layout{grid-template-columns:1fr}.side{position:fixed;z-index:2;width:280px;inset:0 auto 0 0;transform:translateX(-100%)}.side.open{transform:none}.messages{padding:12px}.topbar{height:auto;gap:8px;flex-wrap:wrap;padding:12px}}