:root{--bg:#f3f6fb;--card:#fff;--accent:#2563eb}body{font-family:Inter,Arial;background:var(--bg);margin:0}.container{max-width:1100px;margin:0 auto;padding:20px}.site-header{background:var(--card);padding:12px}.brand{font-weight:700;color:var(--accent)}.auth-center{display:flex;align-items:center;justify-content:center;min-height:70vh}.auth-card{width:420px;background:#fff;padding:28px;border-radius:12px}.input{width:100%;padding:10px;margin-top:8px;border-radius:8px;border:1px solid #e6eef5}.btn{background:var(--accent);color:#fff;padding:8px 12px;border-radius:8px;border:none}.card{background:#fff;padding:12px;border-radius:8px;margin-bottom:12px}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:8px;border-bottom:1px solid #eef2f7}.chat-window{max-height:420px;overflow:auto;padding:10px;background:#fff;border-radius:8px}.chat-msg{margin-bottom:8px;padding:8px;border-radius:8px}.chat-msg.me{background:#e0f2fe;margin-left:auto}.muted{color:#6b7280}