/* ==========================================================================
   Mail — inbox toolbar, folder tabs, message list, and reader pane
   ========================================================================== */

/* Generic chip (also used for filters here) */
.chip {
  padding: 6px 14px;
  font-size: var(--fs-sm); font-weight: 600;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-strong);
  color: var(--text-secondary);
  background: var(--surface);
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}
.chip:hover { color: var(--text); border-color: var(--border-gold); }
.chip.is-active { background: var(--primary-soft); border-color: var(--primary); color: var(--primary-hover); }

/* --- Toolbar --- */
.mail-toolbar {
  display: flex; align-items: center; gap: var(--sp-3);
  flex-wrap: wrap;
  margin-bottom: var(--sp-3);
}
.mail-search {
  position: relative; display: flex; align-items: center;
  flex: 1; min-width: 180px;
}
.mail-search .msym { position: absolute; left: 12px; color: var(--text-muted); pointer-events: none; }
.mail-search__input { padding-left: 40px; }

.mail-folders { display: flex; gap: 2px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 3px; }
.mail-folder {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: var(--radius-sm);
  color: var(--text-secondary); font-size: var(--fs-sm); font-weight: 600;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.mail-folder:hover { color: var(--text); background: var(--surface-2); }
.mail-folder.is-active { color: var(--text); background: var(--surface-hover); }
.mail-folder__count {
  min-width: 18px; height: 18px; padding: 0 5px;
  display: grid; place-items: center;
  border-radius: var(--radius-pill);
  background: var(--primary); color: #fff;
  font-size: 11px; font-weight: 700;
}

.mail-filters { display: flex; gap: var(--sp-2); margin-bottom: var(--sp-4); flex-wrap: wrap; }
.mail-filters:empty { display: none; }

/* --- Layout: list + reader --- */
.mail-layout {
  display: grid;
  grid-template-columns: minmax(280px, 380px) 1fr;
  gap: var(--sp-4);
  align-items: start;
  min-height: 480px;
}
.mail-list {
  display: flex; flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  overflow: hidden;
  max-height: 72vh; overflow-y: auto;
}

/* --- List item --- */
.mail-item {
  display: flex; align-items: flex-start; gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  text-align: left;
  border-bottom: 1px solid var(--border);
  position: relative;
  transition: background var(--transition-fast);
}
.mail-item:last-child { border-bottom: none; }
.mail-item:hover { background: var(--surface-2); }
.mail-item.is-active { background: var(--primary-soft); }
.mail-item.is-active::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--primary);
}
.mail-item__body { flex: 1; min-width: 0; }
.mail-item__top { display: flex; align-items: baseline; justify-content: space-between; gap: var(--sp-2); }
.mail-item__from { color: var(--text); font-weight: 600; font-size: var(--fs-sm); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mail-item__time { color: var(--text-muted); font-size: var(--fs-xs); flex-shrink: 0; }
.mail-item__subject { color: var(--text-secondary); font-size: var(--fs-sm); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mail-item.is-unread .mail-item__from { color: var(--text); }
.mail-item.is-unread .mail-item__subject { color: var(--text); font-weight: 600; }
.mail-item__snippet { color: var(--text-muted); font-size: var(--fs-xs); margin-top: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mail-item__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); flex-shrink: 0; margin-top: 6px; }

.mail-empty, .mail-reader__empty {
  display: grid; place-items: center; gap: var(--sp-2);
  padding: var(--sp-8) var(--sp-4);
  color: var(--text-muted); text-align: center;
}
.mail-reader__empty h3 { color: var(--text-secondary); font-size: var(--fs-md); }
.mail-reader__empty p { font-size: var(--fs-sm); }

/* --- Reader --- */
.mail-reader {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  min-height: 480px;
  display: flex; flex-direction: column;
}
.mail-reader__head {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-5);
  border-bottom: 1px solid var(--border);
}
.mail-reader__back { display: none; }
.mail-reader__subject { flex: 1; min-width: 0; font-size: var(--fs-lg); line-height: 1.3; }
.mail-reader__actions { display: flex; gap: var(--sp-2); flex-shrink: 0; }
.mail-reader__from {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-5);
  border-bottom: 1px solid var(--border);
}
.mail-reader__from strong { display: block; color: var(--text); font-size: var(--fs-sm); }
.mail-reader__from small { display: block; color: var(--text-muted); font-size: var(--fs-xs); }
.mail-reader__auto { margin-left: auto; }
.mail-reader__body {
  padding: var(--sp-5);
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-y: auto;
}

.mail-compose { display: flex; flex-direction: column; gap: var(--sp-4); }
.mail-compose textarea { resize: vertical; font-family: inherit; line-height: 1.6; }

/* --- Responsive: single column, list ↔ reader swap --- */
@media (max-width: 860px) {
  .mail-layout { grid-template-columns: 1fr; }
  .mail-list { max-height: none; }
  .mail-reader { display: none; }
  .mail-layout.is-reading .mail-list { display: none; }
  .mail-layout.is-reading .mail-reader { display: flex; }
  .mail-reader__back { display: grid; }
  .mail-reader__subject { font-size: var(--fs-md); }
}
@media (max-width: 560px) {
  .mail-toolbar { gap: var(--sp-2); }
  .mail-folders { width: 100%; justify-content: space-between; }
  .mail-search { order: 3; width: 100%; flex-basis: 100%; }
  .mail-reader__actions .btn span:not(.msym) { display: none; }
}