:root{--bg: #f4f6f8;--panel: #ffffff;--ink: #0f172a;--muted: #64748b;--line: #e2e8f0;--brand: #0f766e;--brand-soft: #ccfbf1;--danger: #b91c1c;--shadow: 0 10px 30px rgba(15, 23, 42, .06);font-family:IBM Plex Sans,Noto Sans SC,Segoe UI,sans-serif;color:var(--ink);background:var(--bg)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at top left,#d8f3ef 0,transparent 40%),linear-gradient(180deg,#eef2f6,#f7f8fa)}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}.login-page{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:min(420px,100%);background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:32px;box-shadow:var(--shadow)}.login-card h1{margin:0 0 8px;font-size:28px;letter-spacing:-.03em}.login-card p{margin:0 0 24px;color:var(--muted)}.layout{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:#0b3b3a;color:#ecfeff;padding:24px 16px;display:flex;flex-direction:column;gap:8px}.brand{font-size:18px;font-weight:700;margin:0 0 18px;letter-spacing:.02em}.nav-link{display:block;padding:10px 12px;border-radius:10px;color:#cffafe;opacity:.85}.nav-link.active,.nav-link:hover{background:#ffffff1a;opacity:1}.sidebar .spacer{flex:1}.sidebar .user{font-size:13px;opacity:.8;padding:8px 12px}.content{padding:28px}.page-title{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px}.page-title h2{margin:0;font-size:26px;letter-spacing:-.03em}.grid{display:grid;gap:16px}.grid.stats{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow)}.card .label{color:var(--muted);font-size:13px}.card .value{font-size:28px;font-weight:700;margin-top:8px}.btn{border:none;border-radius:10px;padding:10px 14px;background:var(--brand);color:#fff;font-weight:600}.btn.secondary{background:#e2e8f0;color:var(--ink)}.btn.danger{background:var(--danger)}.btn:disabled{opacity:.6;cursor:not-allowed}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.field label{font-size:13px;color:var(--muted)}.field input,.field select,.field textarea{border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:#fff}.field textarea{min-height:90px;resize:vertical}.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:12px 10px;border-bottom:1px solid var(--line);font-size:14px;vertical-align:top}th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.04em}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;background:var(--brand-soft);color:#115e59}.badge.closed{background:#fee2e2;color:#991b1b}.muted{color:var(--muted)}.error{color:var(--danger);margin:8px 0;font-size:14px}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}.inbox{display:grid;grid-template-columns:320px 1fr;gap:16px;min-height:70vh}.conv-list{overflow:auto;max-height:75vh}.conv-item{padding:12px;border-bottom:1px solid var(--line);cursor:pointer}.conv-item:hover,.conv-item.active{background:#f0fdfa}.chat{display:flex;flex-direction:column;height:75vh}.chat-messages{flex:1;overflow:auto;background:#f8fafc;border-radius:12px;padding:12px;border:1px solid var(--line)}.bubble{max-width:75%;margin:8px 0;padding:10px 12px;border-radius:12px;font-size:14px;line-height:1.45;white-space:pre-wrap}.bubble.visitor{background:#fff;border:1px solid var(--line)}.bubble.agent{margin-left:auto;background:var(--brand);color:#fff}.bubble.system{margin:8px auto;background:#e2e8f0;color:var(--muted);font-size:13px}.composer{display:flex;gap:8px;margin-top:12px}.composer input,.composer textarea{flex:1}.quick-list{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}.chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 10px;font-size:12px}pre.snippet{background:#0f172a;color:#e2e8f0;padding:12px;border-radius:10px;overflow:auto;font-size:12px}@media(max-width:960px){.layout{grid-template-columns:1fr}.sidebar{flex-direction:row;flex-wrap:wrap;align-items:center}.sidebar .spacer{display:none}.grid.stats{grid-template-columns:1fr 1fr}.inbox{grid-template-columns:1fr}}