.mail-conversation-dialog {
  width: min(1180px, calc(100vw - 48px));
  max-width: none;
  height: min(850px, calc(100dvh - 64px));
  max-height: none;
  padding: 0;
  border: 1px solid var(--theme-border);
  border-radius: 12px;
  color: var(--theme-text);
  background: var(--theme-surface);
}
.mail-conversation-dialog::backdrop {
  background: rgb(15 21 19 / 0.55);
}
.mail-conversation-shell {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
}
.mail-conversation-dialog button,
.mail-conversation-dialog a {
  min-height: 44px;
}
.mail-conversation-dialog button {
  font: inherit;
  cursor: pointer;
}
.mail-conversation-dialog button:disabled {
  opacity: 0.55;
  cursor: default;
}
.mail-conversation-dialog :focus-visible {
  outline: 2px solid var(--theme-accent-strong);
  outline-offset: 3px;
}
.mail-conversation-dialog svg,
.mail-request-copy small svg {
  width: 19px;
  height: 19px;
  flex: 0 0 19px;
  vertical-align: middle;
}
.mail-conversation-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 28px 18px;
  border-bottom: 1px solid var(--theme-border);
}
.mail-conversation-header h2 {
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.4;
  overflow-wrap: anywhere;
}
.mail-conversation-header p {
  margin: 6px 0 0;
  color: var(--theme-text-muted);
  font-size: 0.875rem;
}
.mail-icon-button {
  display: grid;
  place-items: center;
  width: 44px;
  flex-shrink: 0;
  padding: 0;
  border: 0;
  border-radius: 6px;
  color: inherit;
  background: transparent;
}
.mail-icon-button:hover,
.mail-text-action:hover {
  background: var(--theme-surface-muted);
}
.mail-conversation-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 24px 0;
  border-bottom: 1px solid var(--theme-border);
}
.mail-conversation-toolbar [role="tablist"] {
  display: flex;
  gap: 8px;
}
.mail-conversation-toolbar [role="tab"] {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 0;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  color: var(--theme-text-muted);
  background: transparent;
  font-size: 0.875rem;
}
.mail-conversation-toolbar [aria-selected="true"] {
  border-bottom-color: var(--theme-accent-strong);
  color: var(--theme-text);
  font-weight: 700;
}
.mail-conversation-notices {
  padding: 0 28px;
  background: var(--theme-surface-muted);
  font-size: 0.8125rem;
  line-height: 1.5;
}
.mail-conversation-notices:empty {
  display: none;
}
.mail-conversation-notices p {
  margin: 10px 0;
}
.mail-conversation-notices [role="alert"] {
  color: var(--theme-text);
  font-weight: 600;
}
.mail-conversation-layout {
  display: grid;
  grid-template-columns: minmax(0, 2.2fr) minmax(230px, 1fr);
  flex: 1;
  min-height: 0;
}
.mail-conversation-panel {
  min-width: 0;
  overflow-y: auto;
  padding: 24px 28px;
  overscroll-behavior: contain;
  scrollbar-color: var(--theme-border) transparent;
}
.mail-conversation-context {
  min-width: 0;
  overflow-y: auto;
  padding: 26px 24px;
  background: var(--theme-surface-muted);
  font-size: 0.875rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}
.mail-conversation-context h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  font-size: 0.875rem;
}
.mail-conversation-context p {
  margin: 6px 0 12px;
}
.mail-conversation-context .primary-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  justify-content: center;
  margin-top: 14px;
}
.mail-context-detail {
  margin-top: 32px;
  border-top: 1px solid var(--theme-border);
  padding-top: 22px;
}
.mail-subtle,
.mail-message-source,
.mail-message-recipient {
  color: var(--theme-text-muted);
  font-size: 0.8125rem;
}
.mail-text-action {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  padding: 8px 4px;
  color: var(--theme-text);
  background: transparent;
  border: 0;
  border-radius: 4px;
  font-size: 0.875rem;
  text-align: left;
}
.mail-message {
  border-bottom: 1px solid var(--theme-border);
}
.mail-message:first-child {
  border-top: 1px solid var(--theme-border);
}
.mail-message > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 0;
  cursor: pointer;
  font-size: 0.875rem;
  line-height: 1.45;
}
.mail-message > summary > span:nth-child(2) {
  flex: 1;
  min-width: 0;
  overflow-wrap: anywhere;
}
.mail-message > summary strong,
.mail-message > summary span span {
  display: block;
}
.mail-message > summary span span {
  margin-top: 4px;
  color: var(--theme-text-muted);
  font-size: 0.8125rem;
}
.mail-message time {
  font-size: 0.75rem;
  white-space: nowrap;
  color: var(--theme-text-muted);
  font-variant-numeric: tabular-nums;
}
.mail-message-content {
  padding: 2px 0 20px 31px;
}
.mail-message-text {
  max-width: 70ch;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font: inherit;
  font-size: 0.9375rem;
  line-height: 1.65;
}
.mail-message-source {
  margin-top: 20px;
  overflow-wrap: anywhere;
}
.mail-quoted {
  margin: 18px 0;
  font-size: 0.8125rem;
}
.mail-quoted summary {
  padding: 8px 0;
  cursor: pointer;
  color: var(--theme-text-muted);
}
.mail-quoted .mail-message-text {
  padding-top: 12px;
  color: var(--theme-text-muted);
  font-size: 0.8125rem;
}
.mail-conversation-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 28px;
  border-top: 1px solid var(--theme-border);
}
.mail-conversation-footer > div {
  display: flex;
  gap: 12px;
}
.mail-conversation-footer button {
  padding: 8px 16px;
  border: 1px solid var(--theme-border);
  border-radius: 6px;
  background: var(--theme-surface);
  color: var(--theme-text);
}
.mail-conversation-footer button.primary-action {
  background: var(--theme-accent-strong);
  color: var(--theme-surface);
  border-color: var(--theme-accent-strong);
}
.mail-conversation-layout.is-choosing {
  grid-template-columns: minmax(0, 1fr);
}
.mail-link-picker {
  max-width: 760px;
  margin: 0 auto;
  font-size: 0.9375rem;
}
.mail-link-picker label {
  display: grid;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 600;
}
.mail-link-picker input,
.mail-link-picker textarea {
  box-sizing: border-box;
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--theme-border);
  border-radius: 6px;
  background: var(--theme-surface);
  color: var(--theme-text);
  font: inherit;
  caret-color: var(--theme-accent-strong);
}
.mail-link-picker input::placeholder,
.mail-link-picker textarea::placeholder {
  color: var(--theme-text-muted);
}
.mail-candidates {
  display: grid;
  margin: 20px 0 28px;
}
.mail-candidates button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 16px 12px;
  border: 0;
  border-bottom: 1px solid var(--theme-border);
  border-radius: 0;
  color: var(--theme-text);
  background: transparent;
  text-align: left;
}
.mail-candidates button:first-child {
  border-top: 1px solid var(--theme-border);
}
.mail-candidates button:hover,
.mail-candidates [aria-pressed="true"] {
  background: var(--theme-surface-muted);
}
.mail-candidates strong,
.mail-candidates button span span,
.mail-candidates small {
  display: block;
  overflow-wrap: anywhere;
}
.mail-candidates button span span {
  margin: 6px 0;
  font-size: 0.875rem;
}
.mail-candidates small {
  color: var(--theme-text-muted);
  font-size: 0.8125rem;
}
.mail-selected-label {
  font-size: 0.8125rem;
  font-weight: 700;
}
.mail-link-selection {
  padding: 12px 0;
}
.mail-attachments h3,
.mail-history h3 {
  margin: 0 0 24px;
  font-size: 1.125rem;
}
.mail-attachments h4 {
  font-size: 0.875rem;
  margin: 28px 0 8px;
}
.mail-attachments ul {
  padding: 0;
  list-style: none;
}
.mail-attachments li {
  border-bottom: 1px solid var(--theme-border);
}
.mail-attachments li button {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 4px;
  border: 0;
  background: transparent;
  color: var(--theme-text);
  text-align: left;
  overflow-wrap: anywhere;
}
.mail-attachments small {
  display: block;
  margin-top: 4px;
  font-size: 0.75rem;
  color: var(--theme-text-muted);
}
.mail-attachments details {
  padding: 16px 0;
}
.mail-attachments summary {
  cursor: pointer;
  font-size: 0.875rem;
  line-height: 1.5;
}
.mail-file-preview iframe {
  width: 100%;
  min-height: 430px;
  border: 1px solid var(--theme-border);
}
.mail-file-preview img {
  display: block;
  max-width: 100%;
  max-height: 480px;
  object-fit: contain;
}
.mail-file-preview a {
  display: inline-flex;
  align-items: center;
  color: var(--theme-accent-strong);
  text-underline-offset: 4px;
}
.mail-history ol {
  margin: 0;
  padding-left: 20px;
}
.mail-history li {
  padding: 0 0 24px 8px;
  font-size: 0.875rem;
  line-height: 1.6;
}
.mail-history li p {
  margin: 6px 0;
}
.mail-history time,
.mail-history small {
  display: block;
  color: var(--theme-text-muted);
  font-size: 0.8125rem;
}
.mail-unread-label {
  display: inline-block;
  margin-right: 6px;
  color: var(--theme-accent-strong);
  font-size: 0.75rem;
}
.mail-request-copy small svg {
  width: 14px;
  height: 14px;
  margin-right: 5px;
}
.mail-conversation-loading div {
  height: 68px;
  margin: 16px 0;
  border-radius: 6px;
  background: var(--theme-surface-muted);
}
.mail-conversation-dialog ::selection {
  background: var(--theme-accent-soft);
  color: var(--theme-text);
}
@media (max-width: 800px) {
  .mail-conversation-dialog {
    width: calc(100vw - 24px);
    height: calc(100dvh - 24px);
  }
  .mail-conversation-layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .mail-conversation-context {
    border-top: 1px solid var(--theme-border);
    padding: 14px 20px;
    max-height: 150px;
  }
  .mail-conversation-context .mail-context-detail {
    display: none;
  }
  .mail-conversation-context h3 {
    margin-bottom: 6px;
  }
  .mail-conversation-context p {
    margin: 3px 0;
  }
  .mail-conversation-context .primary-action {
    width: auto;
    margin-top: 4px;
  }
  .mail-conversation-panel {
    padding: 18px 20px;
  }
  .mail-conversation-header {
    padding: 16px 20px;
    gap: 12px;
  }
  .mail-conversation-header h2 {
    font-size: 1.125rem;
  }
  .mail-conversation-toolbar {
    padding: 6px 12px 0;
  }
  .mail-conversation-toolbar [role="tab"] {
    padding: 8px;
    gap: 5px;
  }
  .mail-conversation-footer {
    padding: 12px 16px;
    gap: 10px;
    flex-wrap: wrap;
  }
  .mail-message time {
    white-space: normal;
    max-width: 100px;
    text-align: right;
  }
  .mail-message-content {
    padding-left: 0;
  }
  .mail-conversation-notices {
    padding: 0 20px;
  }
}
@media (prefers-reduced-motion: no-preference) {
  .mail-conversation-dialog[open] {
    animation: mail-window-in 160ms ease-out;
  }
  @keyframes mail-window-in {
    from {
      transform: translateY(6px);
    }
    to {
      transform: translateY(0);
    }
  }
}

/* Keep the modal shell fixed while only its working panels scroll. */
.mail-conversation-dialog {
  position: fixed;
  inset: 0;
  margin: auto;
  box-sizing: border-box;
  overflow: hidden;
}
.mail-conversation-shell {
  overflow: hidden;
}
.mail-conversation-header,
.mail-conversation-toolbar,
.mail-conversation-notices,
.mail-conversation-footer {
  flex-shrink: 0;
}
@media (max-width: 800px) {
  .mail-conversation-layout {
    grid-template-rows: minmax(0, 1fr) auto;
  }
  .mail-conversation-layout.is-choosing {
    grid-template-rows: minmax(0, 1fr);
  }
}