.metric-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.nav-badge {
  display: inline-grid;
  min-width: 1.35rem;
  height: 1.35rem;
  margin-left: auto;
  padding: 0 .35rem;
  place-items: center;
  border-radius: 999px;
  color: #fff;
  background: #ff5a69;
  font-size: .72rem;
  line-height: 1;
}

.mail-metric {
  border-color: rgba(34, 116, 255, .24);
  background: linear-gradient(145deg, #fff, #f0f6ff);
}

.reply-panel {
  margin-bottom: 1.4rem;
  padding: 1.35rem;
  border: 1px solid rgba(34, 116, 255, .2);
  border-radius: 22px;
  background: linear-gradient(135deg, #fff 0%, #f2f7ff 100%);
  box-shadow: 0 18px 45px rgba(25, 76, 151, .08);
}

.reply-panel-head,
.mail-send-row,
.inbox-tabs,
.mail-detail-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .8rem;
}

.reply-panel-head h2,
.mail-compose h2,
.mail-thread h2 {
  margin: 0;
}

.reply-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .8rem;
  margin-top: 1rem;
}

.reply-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .75rem;
  padding: 1rem;
  color: inherit;
  border: 1px solid #dce7f7;
  border-radius: 16px;
  background: #fff;
  text-decoration: none;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.reply-card:hover {
  transform: translateY(-2px);
  border-color: #87b3ff;
  box-shadow: 0 12px 24px rgba(31, 96, 196, .1);
}

.reply-card strong,
.reply-card span,
.reply-card small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reply-card span {
  margin-top: .22rem;
  color: #5d6e88;
}

.reply-card small {
  margin-top: .35rem;
  color: #8190a6;
}

.mail-icon {
  display: grid;
  width: 2.4rem;
  height: 2.4rem;
  place-items: center;
  border-radius: 12px;
  color: #0d65ee;
  background: #eaf2ff;
  font-size: 1.1rem;
}

.sender-chip {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .45rem .7rem;
  border: 1px solid #dbe6f5;
  border-radius: 999px;
  color: #455a78;
  background: #f8fbff;
  font-size: .86rem;
}

.sender-chip::before {
  content: "";
  width: .48rem;
  height: .48rem;
  border-radius: 50%;
  background: #21bf73;
  box-shadow: 0 0 0 4px rgba(33, 191, 115, .12);
}

.mail-compose,
.mail-thread {
  margin-top: 1.2rem;
  padding: 1.35rem;
  border: 1px solid #dce7f5;
  border-radius: 20px;
  background: #fff;
}

.mail-compose textarea,
.reply-compose textarea {
  min-height: 10rem;
}

.mail-compose form,
.reply-compose form {
  display: grid;
  gap: 1rem;
}

.mail-compose label,
.reply-compose label {
  display: grid;
  gap: .45rem;
  color: #3f4d61;
  font-size: .76rem;
  font-weight: 800;
}

.mail-compose input,
.mail-compose textarea,
.reply-compose input,
.reply-compose textarea {
  width: 100%;
  padding: .78rem .85rem;
  border: 1px solid #d4deea;
  border-radius: 10px;
  outline: none;
  color: #101d31;
  background: #fbfcfe;
}

.mail-compose textarea,
.reply-compose textarea {
  resize: vertical;
  line-height: 1.55;
}

.mail-compose input:focus,
.mail-compose textarea:focus,
.reply-compose input:focus,
.reply-compose textarea:focus {
  border-color: #6aa6f8;
  background: #fff;
  box-shadow: 0 0 0 3px rgba(18, 104, 243, .09);
}

.mail-send-row {
  margin-top: .9rem;
  flex-wrap: wrap;
}

.mail-send-row .file-field {
  min-width: min(100%, 22rem);
}

.mail-thread-list {
  display: grid;
  gap: .85rem;
  margin-top: 1rem;
}

.mail-thread-item {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: .85rem;
  align-items: start;
  padding: 1rem;
  border: 1px solid #dfe7f2;
  border-radius: 16px;
  background: #fbfdff;
}

.mail-thread-item.inbound {
  border-left: 4px solid #1f72f2;
  background: #f5f9ff;
}

.mail-thread-item.outbound {
  border-left: 4px solid #21bf73;
}

.mail-thread-item strong,
.mail-thread-item span,
.mail-thread-item small {
  display: block;
}

.mail-thread-item span {
  margin-top: .22rem;
  color: #60718a;
}

.mail-thread-item small {
  color: #8090a5;
}

.inbox-tabs {
  justify-content: flex-start;
  margin: 1rem 0;
  flex-wrap: wrap;
}

.inbox-tabs a {
  padding: .55rem .9rem;
  border: 1px solid #d9e4f3;
  border-radius: 999px;
  color: #52647e;
  background: #fff;
  text-decoration: none;
}

.inbox-tabs a.active {
  color: #fff;
  border-color: #126cf1;
  background: #126cf1;
}

.inbox-list {
  overflow: hidden;
  border: 1px solid #dce6f3;
  border-radius: 20px;
  background: #fff;
}

.inbox-row {
  display: grid;
  grid-template-columns: 2.7rem minmax(11rem, .85fr) minmax(15rem, 1.5fr) auto auto;
  gap: 1rem;
  align-items: center;
  padding: 1.05rem 1.2rem;
  color: inherit;
  border-bottom: 1px solid #e8eef6;
  text-decoration: none;
}

.inbox-row:last-child {
  border-bottom: 0;
}

.inbox-row:hover {
  background: #f8fbff;
}

.inbox-row.unread {
  background: #f2f7ff;
  box-shadow: inset 4px 0 #1f72f2;
}

.inbox-row strong,
.inbox-row span,
.inbox-row small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.inbox-row span,
.inbox-row small {
  color: #65768e;
}

.inbox-row time {
  color: #8291a6;
  white-space: nowrap;
}

.mail-detail-title {
  max-width: 58rem;
  overflow-wrap: anywhere;
}

.mail-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(16rem, .55fr);
  gap: 1.2rem;
  align-items: start;
}

.message-card,
.mail-side-card,
.reply-compose {
  padding: 1.35rem;
  border: 1px solid #dce6f3;
  border-radius: 20px;
  background: #fff;
}

.message-card > header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: .85rem;
  align-items: center;
}

.message-card > header strong,
.message-card > header small {
  display: block;
}

.message-card > header small,
.message-card > header time {
  color: #7c8ba0;
  font-size: .78rem;
}

.message-meta {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .35rem .8rem;
  margin-bottom: 1rem;
  color: #60718a;
  font-size: .9rem;
}

.message-meta strong {
  color: #17243a;
}

.message-body {
  min-height: 12rem;
  padding-top: 1rem;
  border-top: 1px solid #e6edf6;
  color: #26364e;
  line-height: 1.65;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.attachment-list {
  margin: 1rem 0 0;
  padding: 1rem 1rem 1rem 2rem;
  border-radius: 14px;
  background: #f6f9fd;
  color: #55677f;
}

.mail-side-card + .mail-side-card,
.reply-compose {
  margin-top: 1rem;
}

.reply-compose .form-grid {
  grid-template-columns: 1fr;
}

@media (max-width: 1180px) {
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .reply-grid,
  .mail-detail-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 780px) {
  .inbox-row {
    grid-template-columns: 2.7rem minmax(0, 1fr) auto;
  }

  .inbox-row .inbox-preview {
    grid-column: 2 / -1;
    grid-row: 2;
  }

  .inbox-row .attachment-indicator {
    grid-column: 2;
    grid-row: 3;
  }

  .mail-thread-item {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .mail-thread-item > time,
  .mail-thread-item > small:last-child {
    grid-column: 2;
  }
}

@media (max-width: 480px) {
  .metric-grid {
    grid-template-columns: 1fr 1fr;
  }

  .reply-panel,
  .mail-compose,
  .mail-thread,
  .message-card,
  .mail-side-card,
  .reply-compose {
    padding: 1rem;
    border-radius: 16px;
  }

  .inbox-row {
    padding: .9rem;
  }
}