/* Kai Bridge product layout. Brand variables remain in brand/tokens.css. */
:root { color-scheme: light; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--dx-paper); color: var(--dx-ink); font: var(--dx-text-base)/var(--dx-leading-body) var(--dx-font); }
a { color: inherit; text-underline-offset: .25em; }
a:hover { text-decoration-thickness: 2px; }
button, input { font: inherit; }
button, a, input { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: var(--dx-focus-width) solid var(--dx-ink); outline-offset: var(--dx-focus-offset); }
::selection { color: var(--dx-paper); background: var(--dx-ink); }
h1, h2, p { margin: 0; }
h1, h2, p, dd, code, a, button { overflow-wrap: anywhere; }
h1 { font-size: var(--dx-heading-lg); line-height: var(--dx-leading-heading); letter-spacing: -.04em; }
h2 { font-size: var(--dx-text-xl); line-height: 1.3; }
img { display: block; max-width: 100%; height: auto; }
form { margin: 0; }
.wrap { width: min(calc(100% - 112px), var(--dx-content-width)); margin-inline: auto; }
.skip-link { position: absolute; top: -100px; left: 20px; z-index: 10; padding: 12px 16px; min-height: 48px; background: var(--dx-ink); color: var(--dx-paper); }
.skip-link:focus { top: 12px; outline-color: var(--dx-paper); }
.app-header { min-height: 128px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 24px 40px; padding-block: 28px; border-bottom: 1px solid var(--dx-ink); }
.identity { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; min-width: 0; }
.brand { display: inline-flex; align-items: center; min-height: 48px; flex-shrink: 0; }
.brand img { width: 220px; }
.product-name { font-size: var(--dx-text-sm); border-left: 1px solid var(--dx-rule); padding-block: 8px; padding-left: 24px; font-weight: 700; }
.account { display: flex; align-items: center; gap: 24px; min-width: 0; }
.account-name { text-align: right; font-size: var(--dx-text-sm); min-width: 0; }
.meta-label, .account-email { color: var(--dx-muted); font-size: var(--dx-text-xs); }
.account-email { display: block; }
.account form { flex-shrink: 0; }
.app-nav { display: flex; flex-wrap: wrap; gap: 8px 32px; border-bottom: 1px solid var(--dx-rule); }
.app-nav a { display: inline-flex; align-items: center; min-height: 56px; font-size: var(--dx-text-sm); text-decoration: none; border-bottom: 2px solid transparent; }
.app-nav a[aria-current] { border-bottom-color: var(--dx-ink); font-weight: 700; }
.app-nav a:hover { text-decoration: underline; }
.main-content { padding-block: 64px 80px; min-height: 60vh; }
.eyebrow { color: var(--dx-muted); font-size: var(--dx-text-xs); line-height: 1.5; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 16px; }
.page-heading { margin-bottom: 40px; }
.intro { margin-top: 20px; max-width: var(--dx-reading-width); color: var(--dx-muted); }
.auth-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; max-width: 1056px; margin-inline: auto; padding-block: 32px; }
.auth-layout .intro { max-width: 32ch; }
.form-panel { border-top: 2px solid var(--dx-ink); padding-top: 32px; }
.field { margin-bottom: 24px; }
.field label { display: block; font-size: var(--dx-text-sm); font-weight: 700; margin-bottom: 8px; }
.field input { display: block; width: 100%; min-height: 48px; border: 1px solid var(--dx-control-border); border-radius: 0; background: var(--dx-paper); color: var(--dx-ink); padding: 10px 12px; font-size: var(--dx-text-base); line-height: 1.4; }
.field input:hover { border-color: var(--dx-ink); }
.field input[aria-invalid] { border: 2px solid var(--dx-ink); padding: 9px 11px; }
.form-error { margin-bottom: 24px; border-left: 3px solid var(--dx-ink); padding: 12px 16px; background: var(--dx-soft); font-size: var(--dx-text-sm); }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 12px; min-height: 48px; border: 1px solid var(--dx-ink); border-radius: 0; padding: 10px 16px; background: var(--dx-ink); color: var(--dx-paper); font-size: var(--dx-text-sm); line-height: 1.5; text-decoration: none; cursor: pointer; }
.button:hover { background: var(--dx-paper); color: var(--dx-ink); }
.button-secondary { background: var(--dx-paper); color: var(--dx-ink); }
.button-secondary:hover { background: var(--dx-soft); }
.actions { display: flex; flex-wrap: wrap; gap: 16px; }
.consent-panel { max-width: 720px; margin-inline: auto; }
.consent-panel .intro { margin-bottom: 32px; }
.callback { background: var(--dx-soft); border-top: 1px solid var(--dx-rule); border-bottom: 1px solid var(--dx-rule); padding: 24px; margin-bottom: 32px; }
.callback h2 { font-size: var(--dx-text-sm); margin-bottom: 8px; }
code { font-family: inherit; font-size: var(--dx-text-sm); word-break: normal; }
.connection-list, .message-list { border-top: 1px solid var(--dx-ink); }
.connection-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 28px; border-bottom: 1px solid var(--dx-rule); }
.connection-row > div { min-width: 0; }
.connection-row form { flex-shrink: 0; }
.connection-row .muted { margin-top: 8px; font-size: var(--dx-text-sm); }
.muted, .timestamp { color: var(--dx-muted); }
.empty-state { padding-block: 40px; border-bottom: 1px solid var(--dx-rule); }
.empty-state p { margin-top: 12px; color: var(--dx-muted); }
.message-summary { padding-block: 32px; border-bottom: 1px solid var(--dx-rule); }
.message-summary-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; }
.message-summary-heading h2 { min-width: 0; }
.direction { color: var(--dx-muted); }
.timestamp { font-size: var(--dx-text-sm); flex-shrink: 0; }
.message-state { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 16px; font-size: var(--dx-text-xs); color: var(--dx-muted); margin-top: 16px; }
.status { padding: 4px 8px; border: 1px solid var(--dx-control-border); color: var(--dx-ink); }
.message-text { white-space: pre-wrap; overflow-wrap: anywhere; }
.preview { margin-top: 24px; max-width: 85ch; }
.message-summary-footer { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 24px; margin-top: 12px; }
.text-link { display: inline-flex; align-items: center; gap: 12px; min-height: 48px; font-size: var(--dx-text-sm); }
.attachment-count { font-size: var(--dx-text-xs); color: var(--dx-muted); }
.pagination { display: flex; justify-content: space-between; gap: 24px; margin-top: 32px; }
.back-link { margin-top: -24px; margin-bottom: 24px; }
.message-detail { max-width: 960px; }
.message-detail .page-heading { margin-bottom: 0; }
.message-detail h1 { font-size: var(--dx-heading-md); line-height: 1.2; }
.message-metadata { margin: 32px 0 0; border-top: 1px solid var(--dx-rule); padding-block: 20px; }
.message-metadata > div { display: grid; grid-template-columns: 144px minmax(0, 1fr); gap: 12px 24px; padding-block: 8px; font-size: var(--dx-text-sm); }
.message-metadata dt { color: var(--dx-muted); }
.message-metadata dd { margin: 0; min-width: 0; }
.message-metadata dd a { display: inline-block; padding-block: 12px; margin-block: -12px; }
.message-body { border-block: 1px solid var(--dx-rule); padding-block: 32px; }
.attachments { margin-top: 32px; }
.file-list { list-style: none; margin: 16px 0 0; padding: 0; }
.file-list li { border-bottom: 1px solid var(--dx-rule); padding-block: 8px 16px; }
.file-meta { font-size: var(--dx-text-xs); }
.app-footer { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; border-top: 1px solid var(--dx-rule); padding-block: 28px; font-size: var(--dx-text-xs); color: var(--dx-muted); }
.app-footer img { flex-shrink: 0; }
.app-footer > span { margin-left: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
@media (max-width: 1000px) {
  .wrap { width: calc(100% - 64px); }
  .account { gap: 16px; }
  .auth-layout { gap: 40px; }
  .message-summary-heading { flex-direction: column; gap: 12px; }
  .timestamp { flex-shrink: 1; }
}
@media (max-width: 700px) {
  .wrap { width: calc(100% - 40px); }
  .app-header { padding-block: 24px; gap: 24px; }
  .identity { gap: 16px; }
  .product-name { padding: 0; border: 0; flex-basis: 100%; }
  .account { width: 100%; justify-content: space-between; align-items: flex-end; }
  .account-name { text-align: left; }
  .main-content { padding-block: 40px 56px; }
  h1 { font-size: var(--dx-heading-md); }
  .page-heading { margin-bottom: 32px; }
  .auth-layout { grid-template-columns: 1fr; gap: 0; padding-block: 0; }
  .auth-layout .intro { max-width: 100%; }
  .form-panel { padding-top: 24px; }
  .callback { padding: 16px; }
  .connection-row { align-items: flex-start; flex-direction: column; }
  .message-summary { padding-block: 24px; }
  .message-detail h1 { font-size: var(--dx-heading-sm); }
  .message-metadata > div { grid-template-columns: 1fr; gap: 4px; }
  .app-footer { align-items: flex-start; gap: 12px; }
  .app-footer p { flex: 1; }
  .app-footer > span { flex-basis: 100%; margin-left: 44px; }
}
@media (forced-colors: active) {
  .button, .status, .field input { border-color: ButtonText; }
  :focus-visible { outline-color: Highlight; }
}