.line-chat-card{margin-top:18px}
.chat-user-row{display:grid;grid-template-columns:1fr 180px;gap:12px;align-items:end}
.chat-user-row .copy-button{margin-bottom:1px}
.line-chat-feed{height:420px;overflow-y:auto;margin-top:16px;padding:16px;border:1px solid var(--line);border-radius:16px;background:#eef3f5}
.chat-empty{text-align:center;color:var(--muted);font-size:12px;padding:55px 10px}
.chat-message{display:flex;gap:9px;margin-bottom:13px}
.chat-message.outgoing{flex-direction:row-reverse}
.chat-avatar{display:grid;place-items:center;flex:0 0 34px;height:34px;border-radius:50%;background:#617c86;color:#fff;font-size:11px;font-weight:900}
.chat-message.outgoing .chat-avatar{background:#087f7c}
.chat-bubble{max-width:min(78%,560px);padding:10px 12px;border-radius:5px 14px 14px;background:#fff}
.chat-message.outgoing .chat-bubble{border:1px solid #bde5dc;background:#effaf6}
.chat-bubble header{display:flex;justify-content:space-between;gap:18px;color:var(--muted);font-size:10px}
.chat-bubble p{margin:6px 0 0;white-space:pre-wrap;font-size:13px;line-height:1.55}
.chat-bubble img{display:block;max-width:300px;width:100%;max-height:280px;object-fit:cover;margin-top:7px;border-radius:10px}
.line-chat-composer{display:grid;grid-template-columns:1fr 130px;gap:9px;margin-top:12px}
.line-chat-composer textarea{resize:none;border:1px solid var(--line);border-radius:12px;padding:11px}
.line-chat-composer .send-button{padding:10px}
.chat-note{display:block;margin-top:7px;color:var(--muted)}
.chat-sender-display{display:flex;align-items:center;gap:7px;margin-top:14px;padding:9px 11px;border-radius:11px;background:var(--bg);font-size:12px}.chat-sender-display span{color:var(--muted)}.chat-sender-display strong{color:var(--teal)}
.chat-attachment-row{display:flex;align-items:center;gap:9px;margin-top:9px;min-width:0}.chat-image-button,.chat-image-remove{border:1px solid #9ed8c8;border-radius:10px;background:#effaf6;color:#087f63;padding:8px 11px;font-size:12px;font-weight:900;cursor:pointer}.chat-attachment-row>span{min-width:0;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:11px}.chat-image-remove{border-color:#e8b5ba;background:#fff7f8;color:#b82130}.chat-image-preview{margin-top:9px;padding:8px;border:1px solid var(--line);border-radius:13px;background:var(--bg)}.chat-image-preview img{display:block;width:auto;max-width:100%;height:auto;max-height:210px;margin:auto;border-radius:9px;object-fit:contain}
.chat-send-wide{width:100%;margin-top:9px}
.line-received-card{border-top:4px solid #06c755}.received-actions{display:flex;align-items:center;gap:8px}.received-actions .copy-button{width:auto;min-width:90px}.received-actions .prototype-pill{white-space:nowrap}
.line-embedded .line-chat-feed{height:48vh;min-height:300px;margin-top:12px;padding:11px}.line-embedded .chat-message{gap:7px;margin-bottom:9px}.line-embedded .chat-avatar{flex-basis:29px;height:29px;font-size:9px}.line-embedded .chat-bubble{max-width:88%;padding:8px 10px}.line-embedded .chat-bubble p{font-size:12px}.line-embedded .chat-user-row{grid-template-columns:1fr}.line-embedded .line-chat-composer{grid-template-columns:1fr}.line-embedded .line-chat-composer textarea{min-height:62px}.line-embedded .received-actions{flex-wrap:nowrap;justify-content:flex-end}.line-embedded .received-actions .copy-button{min-width:64px;padding:6px;font-size:10px}.line-embedded .received-actions .prototype-pill{padding:5px 7px;font-size:9px}
@media(max-width:620px){.chat-user-row{grid-template-columns:1fr}.line-chat-composer{grid-template-columns:1fr 85px}.line-chat-composer textarea{grid-column:1/-1}.line-chat-feed{height:340px}.chat-bubble{max-width:88%}}