.mail-app {
  display: grid;
  min-height: 100vh;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
}

.mail-sidebar {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  background: var(--penzo-graphite);
  color: white;
}

.brand-block {
  padding: 17px 17px 13px;
  border-bottom: 1px solid #494949;
}

.brand-logo {
  width: 100%;
  max-height: 70px;
  object-fit: contain;
  object-position: left center;
}

.brand-caption {
  margin-top: 4px;
  color: #bdbdb7;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.compose-launcher {
  margin: 13px 10px 8px;
}

.compose-launcher .primary-button {
  width: 100%;
  min-height: 40px;
  justify-content: flex-start;
  padding-inline: 13px;
}

.sidebar-scroll {
  min-height: 0;
  flex: 1;
  overflow-y: auto;
  padding: 4px 8px 14px;
}

.sidebar-section {
  margin-top: 10px;
}

.sidebar-heading {
  padding: 7px 10px 5px;
  color: #999995;
  font-size: 8px;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.account-item,
.folder-item,
.label-item {
  display: flex;
  width: 100%;
  min-height: 34px;
  align-items: center;
  gap: 9px;
  padding: 7px 9px;
  border-radius: var(--radius-sm);
  background: transparent;
  color: #d8d8d3;
  cursor: pointer;
  text-align: left;
}

.account-item:hover,
.folder-item:hover,
.label-item:hover {
  background: var(--penzo-graphite-2);
  color: white;
}

.account-item.active,
.folder-item.active,
.label-item.active {
  background: var(--penzo-yellow);
  color: #27250f;
  font-weight: 800;
}

.account-dot,
.label-dot {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--item-color, var(--penzo-yellow));
}

.sidebar-item-copy {
  min-width: 0;
  flex: 1;
}

.sidebar-item-copy b,
.sidebar-item-copy span {
  display: block;
  overflow: hidden;
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar-item-copy small {
  display: block;
  overflow: hidden;
  margin-top: 2px;
  color: #aaa;
  font-size: 8px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar-count {
  min-width: 18px;
  color: inherit;
  font-family: var(--font-mono);
  font-size: 9px;
  text-align: right;
}

.sidebar-footer {
  padding: 10px;
  border-top: 1px solid #494949;
}

.account-profile {
  display: flex;
  width: 100%;
  align-items: center;
  gap: 9px;
  padding: 6px;
  border-radius: var(--radius-sm);
  background: transparent;
  color: white;
  cursor: pointer;
  text-align: left;
}

.account-profile:hover {
  background: var(--penzo-graphite-2);
}

.account-profile-copy {
  min-width: 0;
  flex: 1;
}

.account-profile-copy b,
.account-profile-copy small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.account-profile-copy b {
  font-size: 10px;
}

.account-profile-copy small {
  margin-top: 2px;
  color: #aaa;
  font-size: 8px;
}

.mail-workspace {
  display: grid;
  min-width: 0;
  min-height: 100vh;
  grid-template-rows: var(--topbar-height) minmax(0, 1fr);
}

.mail-topbar {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  border-bottom: 1px solid var(--penzo-line);
  background: rgba(255, 254, 251, 0.95);
  backdrop-filter: blur(12px);
}

.product-heading {
  min-width: 160px;
}

.product-heading span {
  display: block;
  color: var(--penzo-muted);
  font-size: 8px;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.product-heading h1 {
  margin: 2px 0 0;
  font-size: 18px;
  line-height: 1;
}

.top-search {
  display: flex;
  min-width: 220px;
  max-width: 680px;
  height: 36px;
  flex: 1;
  align-items: center;
  gap: 8px;
  margin-left: 12px;
  padding: 0 10px;
  border: 1px solid var(--penzo-line);
  border-radius: var(--radius-sm);
  background: var(--penzo-surface-2);
}

.top-search:focus-within {
  border-color: var(--penzo-yellow-deep);
  box-shadow: 0 0 0 3px rgba(236, 202, 35, 0.16);
}

.top-search input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  font-size: 11px;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-left: auto;
}

.mail-main {
  display: grid;
  min-width: 0;
  min-height: 0;
  grid-template-columns: var(--thread-list-width) minmax(0, 1fr);
  overflow: hidden;
}

.thread-column {
  display: grid;
  min-width: 0;
  min-height: 0;
  grid-template-rows: auto minmax(0, 1fr);
  border-right: 1px solid var(--penzo-line);
  background: var(--penzo-surface);
}

.thread-toolbar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 11px;
  border-bottom: 1px solid var(--penzo-line);
}

.thread-toolbar-title {
  min-width: 0;
  flex: 1;
}

.thread-toolbar-title b {
  display: block;
  font-size: 12px;
}

.thread-toolbar-title small {
  display: block;
  margin-top: 2px;
  color: var(--penzo-muted);
  font-size: 9px;
}

.thread-list {
  min-height: 0;
  overflow-y: auto;
}

.thread-row {
  position: relative;
  display: grid;
  width: 100%;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px;
  padding: 12px 11px;
  border-bottom: 1px solid #eceae4;
  background: transparent;
  cursor: pointer;
  text-align: left;
}

.thread-row:hover {
  background: #fffdf4;
}

.thread-row.selected {
  background: var(--penzo-yellow-soft);
  box-shadow: inset 3px 0 0 var(--penzo-yellow-deep);
}

.thread-row.unread .thread-sender,
.thread-row.unread .thread-subject {
  font-weight: 850;
}

.thread-avatar {
  margin-top: 1px;
}

.thread-copy {
  min-width: 0;
}

.thread-line {
  display: flex;
  min-width: 0;
  align-items: baseline;
  gap: 8px;
}

.thread-sender,
.thread-subject,
.thread-preview {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.thread-sender {
  flex: 1;
  font-size: 10px;
}

.thread-time {
  flex: 0 0 auto;
  color: var(--penzo-muted);
  font-family: var(--font-mono);
  font-size: 8px;
}

.thread-subject {
  margin-top: 4px;
  font-size: 10px;
}

.thread-preview {
  margin-top: 3px;
  color: var(--penzo-muted);
  font-size: 9px;
  line-height: 1.35;
}

.thread-labels {
  display: flex;
  gap: 4px;
  margin-top: 7px;
  overflow: hidden;
}

.thread-label {
  max-width: 90px;
  overflow: hidden;
  padding: 2px 6px;
  border-radius: 999px;
  background: var(--label-color, var(--penzo-surface-3));
  font-size: 8px;
  font-weight: 750;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.thread-star {
  cursor: pointer;
  margin-top: 2px;
  color: #aaa;
  font-size: 14px;
}

.thread-star.active {
  color: #b89500;
}

.reader-column {
  min-width: 0;
  min-height: 0;
  overflow-y: auto;
  background: var(--penzo-bg);
}

.reader-shell {
  min-height: 100%;
  padding: 22px clamp(18px, 3vw, 42px) 70px;
}

.reader-card {
  max-width: 980px;
  margin: 0 auto;
  border: 1px solid var(--penzo-line);
  border-radius: var(--radius-lg);
  background: var(--penzo-surface);
  box-shadow: var(--shadow-sm);
}

.reader-head {
  padding: 22px 24px 16px;
  border-bottom: 1px solid var(--penzo-line);
}

.reader-subject-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.reader-subject-row h2 {
  min-width: 0;
  flex: 1;
  margin: 0;
  font-size: clamp(19px, 2vw, 25px);
  line-height: 1.25;
}

.reader-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 6px;
}

.reader-actions .is-active {
  background: var(--yellow-soft);
  color: #7b6714;
}

.reader-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
}

.reader-meta-copy {
  min-width: 0;
  flex: 1;
}

.reader-meta-copy b,
.reader-meta-copy small {
  display: block;
}

.reader-meta-copy b {
  font-size: 11px;
}

.reader-meta-copy small {
  margin-top: 3px;
  color: var(--penzo-muted);
  font-size: 9px;
}

.reader-date {
  color: var(--penzo-muted);
  font-family: var(--font-mono);
  font-size: 9px;
}

.reader-body {
  padding: 25px 24px 32px;
  color: #353535;
  font-size: 13px;
  line-height: 1.65;
}

.reader-body p:first-child {
  margin-top: 0;
}

.reader-body a {
  color: #5b4c00;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.reader-body table {
  max-width: 100%;
  border-collapse: collapse;
}

.reader-body td,
.reader-body th {
  padding: 7px 9px;
  border: 1px solid var(--penzo-line);
}

.reader-reply-strip {
  display: flex;
  gap: 8px;
  padding: 16px 24px 20px;
  border-top: 1px solid var(--penzo-line);
}

.empty-reader {
  display: grid;
  min-height: 100%;
  place-items: center;
  padding: 30px;
  color: var(--penzo-muted);
  text-align: center;
}

.empty-reader strong {
  display: block;
  margin-bottom: 6px;
  color: var(--penzo-ink);
  font-size: 16px;
}

.mobile-menu-button {
  display: none;
}

@media (max-width: 1120px) {
  :root {
    --sidebar-width: 224px;
    --thread-list-width: 350px;
  }
}

@media (max-width: 900px) {
  body {
    overflow: auto;
  }

  .mail-app {
    grid-template-columns: 1fr;
  }

  .mail-sidebar {
    position: fixed;
    z-index: 200;
    top: 0;
    bottom: 0;
    left: 0;
    width: min(290px, 86vw);
    transform: translateX(-101%);
    transition: transform 180ms ease;
  }

  .mail-app.sidebar-open .mail-sidebar {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }

  .mobile-menu-button {
    display: inline-flex;
  }

  .mail-workspace {
    min-height: 100vh;
  }

  .mail-main {
    grid-template-columns: minmax(320px, 42vw) minmax(0, 1fr);
  }
}

@media (max-width: 680px) {
  .mail-topbar {
    padding-inline: 10px;
  }

  .product-heading {
    min-width: auto;
  }

  .product-heading span {
    display: none;
  }

  .product-heading h1 {
    font-size: 15px;
  }

  .top-search {
    margin-left: 0;
  }

  .top-actions .soft-button {
    display: none;
  }

  .mail-main {
    display: block;
    overflow: visible;
  }

  .thread-column {
    min-height: calc(100vh - var(--topbar-height));
    border-right: 0;
  }

  .reader-column {
    display: none;
  }

  .mail-app.reader-mobile-open .thread-column {
    display: none;
  }

  .mail-app.reader-mobile-open .reader-column {
    display: block;
    min-height: calc(100vh - var(--topbar-height));
  }

  .reader-shell {
    padding: 12px 10px 50px;
  }

  .reader-head,
  .reader-body,
  .reader-reply-strip {
    padding-inline: 16px;
  }
}