:root{--bg: #f0f2f5;--panel: #ffffff;--border: #e2e6ea;--text: #111b21;--muted: #667781;--primary: #00a884;--primary-dark: #008069;--in-bubble: #ffffff;--out-bubble: #d9fdd3;--draft-bubble: #fff8e1;--error: #d32f2f;font-family:Segoe UI,Heebo,Arial,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}button{cursor:pointer;border:1px solid var(--border);background:var(--panel);border-radius:8px;padding:6px 12px;font-size:14px;font-family:inherit}button:hover{background:#f5f6f6}button:disabled{opacity:.5;cursor:default}button.primary{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600;padding:10px 24px}button.primary:hover{background:var(--primary-dark)}input,textarea,select{font-family:inherit;font-size:14px;padding:8px 10px;border:1px solid var(--border);border-radius:8px;width:100%;background:#fff}textarea{resize:vertical}.center-screen{height:100vh;display:flex;align-items:center;justify-content:center}.login-card{background:var(--panel);padding:32px;border-radius:16px;box-shadow:0 4px 24px #00000014;width:min(360px,90vw);display:flex;flex-direction:column;gap:12px;text-align:center}.login-card h1{margin:0;font-size:24px}.login-card p{margin:0;color:var(--muted);font-size:14px}.login-card button{background:var(--primary);color:#fff;border:none;padding:10px;font-weight:600}.legal-links{font-size:12px;margin-top:4px}.legal-links a{color:var(--muted)}.app{height:100vh;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;gap:16px;background:var(--primary-dark);color:#fff;padding:10px 20px}.brand{font-weight:700;font-size:18px}.topbar nav{display:flex;gap:6px;flex:1}.topbar nav button{background:transparent;border:none;color:#ffffffd9;font-size:15px;padding:8px 14px;border-radius:8px}.topbar nav button:hover{background:#ffffff1f}.topbar nav button.active{background:#ffffff38;color:#fff;font-weight:600}.topbar .logout{background:transparent;border:1px solid rgba(255,255,255,.4);color:#fff}.topbar-user{display:flex;align-items:center;gap:10px;font-size:14px}.role-badge{background:#ffffff38;border-radius:10px;padding:2px 10px;font-size:12px;font-weight:600}main{flex:1;overflow:hidden}.muted{color:var(--muted)}.error{color:var(--error)}.success{color:var(--primary-dark);font-weight:600}.error-bar{background:#fdecea;color:var(--error);padding:8px 14px;border-radius:8px;margin:8px;font-size:13px;word-break:break-word}.conversations-layout{display:flex;height:100%}.conv-list{width:320px;min-width:240px;background:var(--panel);border-inline-end:1px solid var(--border);overflow-y:auto;padding:12px}.conv-list h2{margin:4px 8px 12px;font-size:18px}.conv-item{display:block;width:100%;text-align:start;border:none;border-bottom:1px solid var(--border);border-radius:0;background:transparent;padding:10px 8px}.conv-item:hover{background:#f5f6f6}.conv-item.selected{background:#e7f8f2}.conv-title{display:flex;align-items:center;gap:8px;font-weight:600}.conv-preview{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}.badge{background:var(--primary);color:#fff;font-size:11px;border-radius:10px;padding:1px 8px;font-weight:600}.badge.human{background:#8e24aa}.badge.biz{background:#1565c0}.biz-select{width:auto;max-width:220px;padding:5px 8px;border-radius:8px;border:none;font-size:13px;background:#ffffffeb}.chat{flex:1;display:flex;flex-direction:column;background:#efeae2}.center-fill{flex:1;display:flex;align-items:center;justify-content:center}.chat-header{background:var(--panel);border-bottom:1px solid var(--border);padding:10px 16px;display:flex;align-items:center;gap:8px}.chat-actions{margin-inline-start:auto;display:flex;gap:8px}.chat-messages{flex:1;overflow-y:auto;padding:16px 24px;display:flex;flex-direction:column;gap:8px}.bubble{max-width:min(75%,560px);padding:8px 12px;border-radius:10px;box-shadow:0 1px 1px #00000014;white-space:pre-wrap;word-break:break-word}.bubble.in{background:var(--in-bubble);align-self:flex-start}.bubble.out{background:var(--out-bubble);align-self:flex-end}.bubble.draft{background:var(--draft-bubble);align-self:flex-end;border:1px dashed #f0b429;max-width:min(85%,640px)}.bubble-meta{font-size:11px;color:var(--muted);margin-top:4px}.draft-label{font-size:12px;font-weight:700;color:#a06a00;margin-bottom:6px}.draft-actions{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}.chat-input{display:flex;gap:8px;padding:10px 16px;background:var(--panel);border-top:1px solid var(--border)}.chat-input textarea{flex:1}.chat-input button{background:var(--primary);color:#fff;border:none;font-weight:600;padding:0 24px}.page{padding:24px;overflow-y:auto;height:100%}.page h2{margin-top:0}.drafts-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:16px}.draft-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:10px}.draft-card-header{display:flex;justify-content:space-between;align-items:center;gap:8px}.draft-card-header .muted{font-size:12px;direction:ltr}.quoted{background:#f5f6f6;border-inline-start:3px solid var(--primary);padding:6px 10px;border-radius:6px;font-size:13px}.draft-body{white-space:pre-wrap}.settings{max-width:760px}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:20px;margin-bottom:16px}.card h3{margin-top:0}.field{display:block;margin:12px 0}.field>span{display:block;font-size:13px;font-weight:600;margin-bottom:4px}.radio-row{display:flex;gap:8px;align-items:baseline;margin:6px 0}.radio-row input{width:auto}.add-model{display:flex;gap:8px}.add-model input{flex:1}.save-row{display:flex;align-items:center;gap:16px;padding-bottom:16px}.notice-bar{background:#e7f8f2;color:var(--primary-dark);padding:8px 14px;border-radius:8px;margin:8px 0;font-size:13px}.user-form{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;align-items:center}.table-wrap{overflow-x:auto}.users-table{width:100%;border-collapse:collapse;font-size:14px}.users-table th,.users-table td{text-align:start;padding:8px 10px;border-bottom:1px solid var(--border);white-space:nowrap}.users-table select{width:auto;min-width:120px}.inactive-row{opacity:.55}.row-actions{display:flex;gap:6px}.row-actions button{font-size:12px;padding:4px 8px}