:root{--mcm-bg:#F7F7F7;--mcm-surface:#FFFFFF;--mcm-ink:#242424;--mcm-muted:#777777;--mcm-line:#E8E8E8;--mcm-accent:#7BAE37;--mcm-accent-dark:#5D8A25;--mcm-support:#F4B942;--mcm-r-sm:6px;--mcm-r-md:10px;--mcm-r-lg:12px}
.mcm-msg-app{max-width:1280px;margin:30px auto;padding:0 16px;font-family:Inter,ui-sans-serif,system-ui,sans-serif;color:var(--mcm-ink)}
.mcm-msg-page-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:18px}
.mcm-msg-page-head h1{margin:0 0 6px;font-size:30px;line-height:1.1}
.mcm-msg-page-head p{margin:0;color:var(--mcm-muted)}
.mcm-msg-layout{display:grid;grid-template-columns:340px minmax(0,1fr);gap:16px;min-height:620px}
.mcm-msg-inbox,.mcm-msg-thread,.mcm-phase6-preview{background:var(--mcm-surface);border:1px solid var(--mcm-line);border-radius:var(--mcm-r-lg)}
.mcm-msg-inbox{overflow:hidden}
.mcm-msg-inbox-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px;border-bottom:1px solid var(--mcm-line)}
.mcm-msg-inbox-head strong{display:block;font-size:16px}
.mcm-msg-inbox-head span{display:block;color:var(--mcm-muted);font-size:12px;margin-top:2px}
.mcm-msg-tabs{display:flex;border-bottom:1px solid var(--mcm-line);padding:0 12px}
.mcm-msg-tabs button{border:0;border-bottom:2px solid transparent;background:transparent;color:var(--mcm-muted);padding:11px 10px;font-weight:700;font-size:12px;cursor:pointer}
.mcm-msg-tabs button.is-active{color:var(--mcm-accent-dark);border-bottom-color:var(--mcm-accent)}
.mcm-conversation-list{max-height:540px;overflow:auto}
.mcm-conversation-item{display:grid;grid-template-columns:48px minmax(0,1fr) auto;gap:10px;padding:12px 14px;border-bottom:1px solid var(--mcm-line);cursor:pointer;background:#FFFFFF}
.mcm-conversation-item:hover,.mcm-conversation-item.is-active{background:#F6F9F1}
.mcm-conversation-item img,.mcm-conversation-thumb{width:48px;height:48px;border-radius:6px;object-fit:cover;background:var(--mcm-bg);display:flex;align-items:center;justify-content:center;color:var(--mcm-muted);font-size:10px}
.mcm-conversation-copy{min-width:0}
.mcm-conversation-copy strong{display:block;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mcm-conversation-copy b{display:block;font-size:12px;margin-top:3px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mcm-conversation-copy span{display:block;color:var(--mcm-muted);font-size:11px;margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mcm-unread-pill{align-self:start;background:var(--mcm-accent-dark);color:#FFFFFF;border-radius:999px;min-width:20px;height:20px;padding:0 5px;display:inline-flex;align-items:center;justify-content:center;font-size:10px;font-weight:700}
.mcm-msg-thread{display:flex;flex-direction:column;min-width:0;overflow:hidden}
.mcm-msg-empty-thread,.mcm-msg-empty-list{display:flex;min-height:320px;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:30px;color:var(--mcm-muted)}
.mcm-msg-empty-thread h2,.mcm-msg-empty-list h3{margin:0 0 8px;color:var(--mcm-ink)}
.mcm-thread-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 16px;border-bottom:1px solid var(--mcm-line)}
.mcm-thread-product{display:flex;gap:10px;align-items:center;min-width:0}
.mcm-thread-product img,.mcm-thread-product-placeholder{width:52px;height:52px;border-radius:6px;object-fit:cover;background:var(--mcm-bg);display:flex;align-items:center;justify-content:center;color:var(--mcm-muted);font-size:10px}
.mcm-thread-product strong,.mcm-thread-product a{display:block;color:var(--mcm-ink);text-decoration:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mcm-thread-product span{font-size:12px;color:var(--mcm-muted)}
.mcm-thread-tools{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
.mcm-thread-messages{flex:1;padding:18px;overflow:auto;background:#FAFAFA;display:flex;flex-direction:column;gap:10px;min-height:380px}
.mcm-message-row{display:flex}
.mcm-message-row.is-mine{justify-content:flex-end}
.mcm-message-bubble{max-width:min(560px,82%);border:1px solid var(--mcm-line);background:#FFFFFF;border-radius:10px;padding:10px 12px}
.mcm-message-row.is-mine .mcm-message-bubble{background:#F1F6EA;border-color:#DCEAC8}
.mcm-message-bubble p{margin:0;line-height:1.5;white-space:pre-wrap}
.mcm-message-bubble small{display:block;color:var(--mcm-muted);font-size:10px;margin-top:6px}
.mcm-message-system{align-self:center;color:var(--mcm-muted);font-size:11px;text-align:center;padding:4px 8px}
.mcm-offer-card{border:1px solid var(--mcm-line);background:#FFFFFF;border-radius:10px;padding:12px;max-width:520px}
.mcm-message-row.is-mine .mcm-offer-card{background:#F6F9F1;border-color:#DCEAC8}
.mcm-offer-card.is-accepted{border-color:#BFD99C;background:#F1F6EA}
.mcm-offer-card.is-closed{opacity:.8}
.mcm-offer-card-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.mcm-offer-card-head span{display:block;color:var(--mcm-muted);font-size:11px}
.mcm-offer-card-head strong{display:block;font-size:20px;color:var(--mcm-accent-dark);margin-top:2px}
.mcm-offer-status{font-size:10px;font-weight:700;border:1px solid var(--mcm-line);border-radius:999px;padding:4px 7px;text-transform:capitalize}
.mcm-offer-card small{display:block;color:var(--mcm-muted);margin-top:8px}
.mcm-offer-actions{display:flex;gap:7px;flex-wrap:wrap;margin-top:10px}
.mcm-offer-actions button,.mcm-offer-actions a{border:1px solid var(--mcm-line);background:#FFFFFF;color:var(--mcm-ink);border-radius:6px;padding:7px 9px;font-size:11px;font-weight:700;cursor:pointer;text-decoration:none}
.mcm-offer-actions .is-primary{background:var(--mcm-accent);border-color:var(--mcm-accent);color:#FFFFFF}
.mcm-thread-compose{border-top:1px solid var(--mcm-line);padding:12px;background:#FFFFFF}
.mcm-compose-form{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px}
.mcm-compose-form textarea{resize:vertical;min-height:48px;max-height:120px;border:1px solid #DCDCDC;border-radius:6px;padding:10px 11px;font:inherit}
.mcm-compose-actions{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:8px}
.mcm-offer-form{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:8px;margin-top:10px;padding-top:10px;border-top:1px solid var(--mcm-line)}
.mcm-offer-form[hidden]{display:none}
.mcm-offer-form input{border:1px solid #DCDCDC;border-radius:6px;padding:10px 11px;font:inherit}
.mcm-thread-blocked{background:#FFF7E5;border:1px solid #ECDDB3;border-radius:6px;padding:9px 10px;color:#765900;font-size:12px;margin-bottom:9px}
.mcm-msg-loading{padding:24px;text-align:center;color:var(--mcm-muted)}
.mcm-phase6-product-actions{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}
.mcm-phase6-preview{margin-top:18px;padding:18px}
.mcm-phase6-preview .mcm-panel-head span{color:var(--mcm-muted);font-size:12px}
.mcm-preview-conversation{display:grid;gap:10px;max-width:760px}
.mcm-preview-message{border:1px solid var(--mcm-line);background:#FFFFFF;border-radius:10px;padding:10px 12px;max-width:70%}
.mcm-preview-message.is-mine{margin-left:auto;background:#F1F6EA;border-color:#DCEAC8}
.mcm-preview-message strong{font-size:11px;color:var(--mcm-muted)}
.mcm-preview-message p{margin:5px 0 0}
.mcm-offer-card.is-preview{max-width:620px}
.mcm-offer-card.is-preview>div:first-child span,.mcm-offer-card.is-preview>div:first-child small{display:block;color:var(--mcm-muted);font-size:11px}
.mcm-offer-card.is-preview>div:first-child strong{display:block;color:var(--mcm-accent-dark);font-size:20px;margin:3px 0}
.mcm-account-message-count{display:inline-block;margin-top:8px;color:var(--mcm-accent-dark)}
@media(max-width:900px){
 .mcm-msg-layout{grid-template-columns:290px minmax(0,1fr)}
}
@media(max-width:760px){
 .mcm-msg-page-head{flex-direction:column}
 .mcm-msg-layout{grid-template-columns:1fr;min-height:0}
 .mcm-msg-inbox{max-height:360px}
 .mcm-conversation-list{max-height:280px}
 .mcm-msg-thread{min-height:560px}
}
@media(max-width:520px){
 .mcm-msg-app{margin:20px auto}
 .mcm-thread-head{align-items:flex-start;flex-direction:column}
 .mcm-thread-tools{justify-content:flex-start}
 .mcm-compose-form{grid-template-columns:1fr}
 .mcm-compose-form .mcm-button{width:100%}
 .mcm-offer-form{grid-template-columns:1fr}
 .mcm-message-bubble,.mcm-offer-card{max-width:92%}
 .mcm-preview-message{max-width:92%}
}