.chat-surface{width:100%;display:flex;flex-direction:column;gap:24px}.chat-surface__header h1{margin:0;font-size:24px;font-weight:500;color:#202124}.chat-surface__header p{margin:4px 0 0;color:#5f6368;font-size:14px;line-height:1.6}.chat-surface__body{display:flex;flex-direction:column;gap:16px}.chat-messages{display:flex;flex-direction:column;gap:12px;height:360px;overflow-y:auto;padding-right:4px}.chat-row{display:flex;width:100%}.chat-row.user{justify-content:flex-end}.chat-row.assistant{justify-content:flex-start}.chat-bubble{max-width:80%;padding:14px 16px;border-radius:18px;font-size:14px;line-height:1.6;border:1px solid #e4e7eb;background:#f1f3f4;color:#202124;box-shadow:none}.chat-bubble.user{background:#1a73e8;color:#fff;border-color:#1a73e8}.chat-bubble.assistant{background:#f1f3f4;color:#202124}.chat-compose{display:flex;align-items:center;gap:12px;border:1px solid #e4e7eb;border-radius:24px;padding:12px 16px;background:#fff;box-shadow:0 12px 24px rgba(32,33,36,.06)}.chat-textarea{flex:1 1;border:none;background:transparent;font-family:inherit;font-size:14px;line-height:1.6;color:#202124;resize:none;min-height:44px;max-height:160px}.chat-textarea:focus{outline:none}.chat-textarea::placeholder{color:#9aa0a6}.chat-send{padding:10px 18px;border-radius:20px;border:none;background:#1a73e8;color:#fff;font-weight:500;cursor:pointer;transition:background .2s ease}.chat-send:disabled{background:#c8d1da;cursor:not-allowed}.chat-send:not(:disabled):hover{background:#1765cc}.chat-warning{font-size:13px;color:#c5221f;background:#fce8e6;border-radius:12px;padding:12px}.chat-textarea:disabled{background:#f5f5f5;color:#9aa0a6;cursor:not-allowed}.chat-usage{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;border:1px solid #e4e7eb;border-radius:16px;background:#f8f9fa;color:#202124;font-size:13px}.chat-usage__status{margin:0;font-size:13px;color:#3c4043}.chat-upgrade-button{padding:8px 14px;background:#0b57d0;color:#fff;border:none;border-radius:999px;font-weight:500;cursor:pointer;transition:background .2s ease}.chat-upgrade-button:disabled{background:#aecbfa;cursor:not-allowed}.chat-upgrade-button:not(:disabled):hover{background:#0840a8}.chat-paywall{display:flex;flex-direction:column;gap:12px;padding:20px;border:1px solid #dadce0;border-radius:18px;background:#fff8e1;color:#202124}.chat-paywall__title{margin:0;font-size:16px;font-weight:600;color:#1f1f1f}.chat-paywall__body{margin:0;font-size:14px;line-height:1.6;color:#3c4043}.chat-paywall__error{margin:0;font-size:13px;color:#c5221f}