.mail-view {
  min-height: 100dvh;
}
.topbar {
  height: 64px;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 24px;
  width: 100%;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  box-sizing: border-box;
}
.topbar-left {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-control {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 9999px;
  background: var(--card);
  padding: 0 16px;
  color: var(--grey-blue);
  transition:
    background 0.15s ease,
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}
.search-control:focus-within {
  background: var(--surface);
  border-color: var(--blue);
  box-shadow: 0 0 0 3px oklch(0.59 0.19 255 / 0.12);
}
.search-control .search-icon {
  color: var(--muted);
  flex-shrink: 0;
}
.search-control input {
  flex: 1;
  border: 0;
  background: transparent;
  padding: 12px 0;
  font-size: 15px;
}
.search-control input::placeholder {
  color: var(--muted);
}
.search-control .search-submit {
  background: transparent;
  border: none;
  padding: 4px;
  color: var(--muted);
  cursor: pointer;
  display: grid;
  place-items: center;
  border-radius: 50%;
  transition: color 0.12s ease, background 0.12s ease;
  -webkit-appearance: none;
  appearance: none;
}
.search-control .search-submit:hover {
  color: var(--blue);
  background: var(--blue-soft);
}
.search-control .search-submit:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  display: grid;
  place-items: center;
}
.theme-toggle:hover {
  background: rgba(41, 119, 245, 0.08);
  color: var(--dark);
}
.account-menu {
  position: relative;
  display: flex;
  align-items: center;
}
.avatar-button {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid transparent;
  padding: 0;
  background: transparent;
  cursor: pointer;
  transition: border-color 0.15s ease;
}
.avatar-button:hover {
  border-color: var(--line);
}
.avatar {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #2977f5;
  color: white;
  font-size: 14px;
  font-weight: 700;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.22), 0 1px 3px rgba(0, 0, 0, 0.12);
  flex-shrink: 0;
}
.avatar-large {
  width: 48px;
  height: 48px;
  font-size: 18px;
}
.account-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: -4px;
  width: 280px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.14), 0 0 0 1px rgba(0, 0, 0, 0.04);
  z-index: 100;
}
.account-dropdown::before {
  content: '';
  position: absolute;
  top: -6px;
  right: 14px;
  width: 12px;
  height: 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-bottom: 0;
  border-right: 0;
  transform: rotate(45deg);
}
.account-dropdown[hidden] {
  display: none;
}
.account-dropdown-head {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 12px 10px;
  margin-bottom: 4px;
}
.account-dropdown-head .avatar {
  width: 40px;
  height: 40px;
  font-size: 16px;
}
.account-dropdown-info {
  display: grid;
  gap: 2px;
  min-width: 0;
}
.account-dropdown-info strong {
  font-size: 14px;
  font-weight: 600;
  color: var(--title);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.account-dropdown-info span {
  font-size: 12px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.account-dropdown-sep {
  height: 1px;
  background: var(--line);
  margin: 4px 10px;
}
.dropdown-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  transition: background 0.12s ease;
}
.dropdown-link:hover {
  background: var(--input);
}
.dropdown-link svg {
  flex-shrink: 0;
  opacity: 0.5;
  transition: opacity 0.12s ease;
}
.dropdown-link:hover svg {
  opacity: 0.8;
}
.account-dropdown .full-button {
  margin-top: 4px;
}
@media (max-width: 640px) {
  .account-dropdown {
    right: 8px;
    width: calc(100vw - 16px);
    max-width: 280px;
  }
  .account-dropdown::before {
    right: 12px;
  }
}
.settings-layout {
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  min-height: calc(100dvh - 68px);
  max-width: 1400px;
  margin: 0 auto;
  background: var(--surface);
  overflow: hidden;
}
.settings-layout .sidebar {
  border-right: 1px solid var(--line);
}
.settings-content {
  min-width: 0;
  padding-bottom: 64px;
  animation: fade-in 0.2s ease;
  max-width: 760px;
  margin: 0 auto;
}
@media (max-width: 900px) {
  .settings-layout {
    grid-template-columns: 200px minmax(0, 1fr);
  }
}
@media (max-width: 640px) {
  .settings-layout {
    display: block;
  }
  .settings-layout .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 15px;
  }
  .settings-layout .folder-nav {
    display: flex;
    overflow: auto;
  }
  .settings-layout .folder-button {
    min-width: max-content;
    border-left: 0;
    border-bottom: 4px solid transparent;
  }
  .settings-layout .sidebar-bottom {
    display: flex;
    gap: 6px;
    margin-top: 8px;
    padding-top: 8px;
  }
}
.settings-grid {
  display: grid;
  gap: 24px;
  padding: 24px 32px 40px;
  max-width: 680px;
  margin: 0 auto;
}
.settings-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.settings-card h2 {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 600;
}
.settings-form {
  display: grid;
  gap: 14px;
}
.settings-form label {
  display: grid;
  gap: 4px;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
}
.settings-form input,
.settings-form textarea {
  padding: 10px 12px;
  border: 1px solid var(--input-border);
  border-radius: var(--radius-md);
  background: var(--surface);
  font-size: 14px;
  color: var(--text);
}
.settings-form input:focus,
.settings-form textarea:focus {
  border-color: var(--blue);
  outline: none;
  box-shadow: 0 0 0 3px oklch(0.59 0.19 255 / 0.12);
}
.settings-form input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
.settings-form small {
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.settings-toggle-group {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.settings-toggle {
  padding: 6px 16px;
  border: none;
  background: var(--input);
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.settings-toggle:hover {
  color: var(--text);
}
.settings-toggle.active {
  background: var(--blue);
  color: var(--button-text);
}