/* SWAPS チャットUI（styles.css のトークンを流用） */
.messages-wrap{padding:20px 0 56px}
.messages-panel{display:grid;grid-template-columns:320px 1fr;gap:0;border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;background:#fff;min-height:600px}

.conv-list{border-right:1px solid var(--line);display:flex;flex-direction:column;background:#fff}
.conv-head{padding:18px 20px;font-weight:800;border-bottom:1px solid var(--line);font-size:16px}
.conv-item{display:flex;gap:12px;padding:14px 16px;border-bottom:1px solid var(--line);
  cursor:pointer;transition:background .15s;align-items:center;min-height:68px}
.conv-item:hover{background:var(--bg)}
.conv-item.active{background:var(--green-soft)}
.conv-avatar{width:46px;height:46px;border-radius:50%;background:var(--green-soft);display:grid;
  place-items:center;font-size:20px;flex-shrink:0;position:relative;overflow:hidden}
.conv-avatar img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.conv-main{flex:1;min-width:0}
.conv-name{font-weight:700;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv-item-title{font-size:12px;color:var(--green-dark);margin:2px 0}
.conv-preview{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv-empty{padding:40px 18px;text-align:center;color:var(--muted);font-size:14px;line-height:1.8}

.thread{display:flex;flex-direction:column;min-width:0}
.thread-empty{flex:1;display:grid;place-items:center;color:var(--muted);font-size:14px;padding:40px;text-align:center}
.thread-inner{display:flex;flex-direction:column;height:100%;min-height:600px}
.thread-head{display:flex;align-items:center;gap:10px;padding:14px 18px;border-bottom:1px solid var(--line)}
.thread-head strong{font-size:15px}
.thread-head small{color:var(--muted);display:block;font-size:13px}
.thread-back{display:none;border:0;background:transparent;font-size:22px;color:var(--ink);
  cursor:pointer;width:44px;height:44px;flex-shrink:0;border-radius:50%}
.thread-back:hover{background:var(--bg)}
.thread-body{flex:1;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:10px;background:var(--bg)}
.bubble{max-width:74%;padding:11px 14px;border-radius:16px;font-size:15px;line-height:1.7;word-break:break-word}
.bubble.them{align-self:flex-start;background:#fff;border:1px solid var(--line);border-bottom-left-radius:4px}
.bubble.me{align-self:flex-end;background:var(--green);color:#fff;border-bottom-right-radius:4px}
.bubble-time{font-size:11px;color:var(--muted);margin-top:4px}
.bubble.me .bubble-time{color:rgba(255,255,255,.8);text-align:right}
.thread-day{align-self:center;font-size:12px;color:var(--muted);background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:4px 14px;margin:6px 0}

.thread-composer{display:flex;gap:10px;padding:12px 14px;border-top:1px solid var(--line);background:#fff}
.thread-composer input{flex:1;min-width:0;border:1px solid var(--line-strong);border-radius:999px;
  padding:13px 16px;outline:none;font-size:16px}
.thread-composer input:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(15,139,109,.12)}
.thread-composer .primary-button{border-radius:999px;padding:13px 22px;flex-shrink:0;white-space:nowrap}

/* 翻訳ボタン */
.bubble-translate{
  display:inline-block;margin-top:6px;padding:4px 12px;font-size:12px;min-height:30px;
  border:1px solid rgba(0,0,0,.15);border-radius:999px;background:rgba(255,255,255,.7);
  color:var(--green-dark);cursor:pointer;font-family:inherit;
}
.bubble.me .bubble-translate{border-color:rgba(255,255,255,.55);background:rgba(255,255,255,.2);color:#fff}
.bubble-translated{margin-top:6px;padding-top:6px;border-top:1px dashed rgba(0,0,0,.15);font-size:15px}
.bubble.me .bubble-translated{border-top-color:rgba(255,255,255,.4)}

/* 未読バッジ */
.msg-unread-badge{position:absolute;top:0;right:0;min-width:18px;height:18px;
  background:#d6455c;color:#fff;border-radius:999px;font-size:10px;font-weight:800;
  display:grid;place-items:center;padding:0 5px;pointer-events:none;line-height:1}
.mobile-nav button{position:relative}
.mobile-nav .msg-unread-badge{top:8px;right:calc(50% - 20px)}
.conv-unread{display:inline-block;background:var(--orange);color:#fff;border-radius:999px;
  font-size:10px;font-weight:800;padding:2px 7px;margin-left:6px;vertical-align:middle}
.conv-item.has-unread .conv-preview{color:var(--ink);font-weight:700}

/* ------------------------------------------------------------ スマートフォン */
@media(max-width:680px){
  .messages-wrap{padding:10px 0 56px}
  .messages-panel{grid-template-columns:1fr;min-height:66vh;border-radius:var(--radius)}
  .conv-list{border-right:0}
  /* スレッドを開いたら一覧を隠す（.thread-open で切替）*/
  .messages-panel.thread-open .conv-list{display:none}
  .messages-panel:not(.thread-open) .thread{display:none}
  .thread-inner{min-height:66vh}
  .thread-back{display:grid;place-items:center}
  .thread-body{padding:14px}
  .bubble{max-width:82%;font-size:15px}
  .thread-composer{padding:10px}
  .thread-composer .primary-button{padding:13px 18px}
}