.mail-shell{
  display:grid;
  grid-template-columns:minmax(230px,290px) minmax(0,1fr);
  gap:14px;
  min-height:520px;
}
.mail-list-panel,
.mail-detail-panel{
  min-width:0;
  overflow:hidden;
  border:1px solid rgba(123,205,255,.18);
  border-radius:20px;
  background:rgba(255,255,255,.03);
}
.mail-list-head{
  padding:14px 14px 12px;
  border-bottom:1px solid rgba(123,205,255,.14);
  background:rgba(0,0,0,.18);
}
.mail-list-head strong{
  display:block;
  font-size:15px;
  line-height:1.35;
}
.mail-list-head span{
  display:block;
  margin-top:4px;
  color:var(--muted);
  font:700 10px/1.4 var(--font-display);
  letter-spacing:.12em;
}
.mail-list{
  max-height:620px;
  overflow:auto;
  padding:10px;
  display:grid;
  gap:8px;
}
.mail-item{
  width:100%;
  border:1px solid rgba(123,205,255,.16);
  border-radius:15px;
  padding:11px 12px;
  display:grid;
  gap:5px;
  color:var(--text);
  text-align:left;
  background:rgba(0,0,0,.16);
  cursor:pointer;
  transition:background .18s ease,border-color .18s ease,transform .12s ease;
}
.mail-item:hover,
.mail-item.is-active{
  transform:translateY(-1px);
  border-color:rgba(94,231,255,.42);
  background:rgba(37,208,255,.10);
}
.mail-item.is-unread{
  border-color:rgba(94,231,255,.48);
  background:rgba(37,208,255,.075);
  box-shadow:0 0 18px rgba(37,208,255,.10);
}
.mail-item-subject-row{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:8px;
  min-width:0;
}
.mail-item-subject{
  font-weight:800;
  font-size:14px;
  line-height:1.45;
  word-break:keep-all;
}
.mail-item-unread-chip{
  flex-shrink:0;
  border-radius:999px;
  padding:4px 7px;
  color:#041018;
  background:linear-gradient(90deg,var(--blue),var(--blue-2));
  font:900 9px/1 var(--font-display);
  letter-spacing:.07em;
}
.mail-item-meta{
  color:var(--muted);
  font-size:12px;
  line-height:1.45;
}
.mail-item-badge{
  justify-self:start;
  margin-top:2px;
  border:1px solid rgba(123,205,255,.24);
  border-radius:999px;
  padding:4px 7px;
  color:#a6deff;
  background:rgba(255,255,255,.04);
  font:800 10px/1 var(--font-display);
  letter-spacing:.08em;
}
.mail-detail-panel{
  min-height:0;
  overflow:auto;
  padding:12px;
}
.mail-empty{
  min-height:420px;
  display:grid;
  place-items:center;
  padding:22px;
  color:var(--muted);
  text-align:center;
  line-height:1.7;
}
.mail-empty strong{
  display:block;
  margin-bottom:6px;
  color:var(--text);
  font-size:16px;
}
.mail-mobile-detailbar{display:none}
.mail-mobile-back{
  border:1px solid rgba(124,205,255,.30);
  border-radius:999px;
  padding:9px 12px;
  color:#d6f4ff;
  background:rgba(255,255,255,.045);
  font:800 11px/1 var(--font-display);
  letter-spacing:.06em;
  cursor:pointer;
}