/* Neutral application defaults; SelfTape aliases are scoped to its tenant only. */
:root {
  --surface: #ffffff;
  --paper: #f5f5f4;
  --ink: #252529;
  --muted: #626269;
  --rule: #d4d4d8;
  --dark: #26262b;
  --dark-panel: #323238;
  --on-dark: #fafafa;
  --muted-dark: #c7c7cc;
  --dark-rule: #52525b;
  --accent: #dedee4;
  --accent-hover: #eeeef2;
  --on-accent: #252529;
  --link: #3c3c50;
  --focus: #505078;
  --danger: #a02020;
  --danger-bg: #fff1f0;
  --success: #235a36;
  font:
    16px/1.5 system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  color: var(--ink);
  background: var(--paper);
  color-scheme: light;
}
[data-theme="selftape"] {
  --surface: var(--brand-white);
  --paper: var(--brand-paper);
  --ink: var(--brand-charcoal);
  --muted: var(--brand-muted-on-paper);
  --rule: var(--brand-rule-on-paper);
  --dark: var(--brand-charcoal);
  --dark-panel: var(--brand-graphite);
  --on-dark: var(--brand-white);
  --muted-dark: var(--brand-silver);
  --dark-rule: var(--brand-rule-on-dark);
  --accent: var(--brand-yellow);
  --accent-hover: var(--brand-yellow-hover);
  --on-accent: var(--brand-charcoal);
  --link: var(--brand-link-on-paper);
  --focus: var(--brand-link-on-paper);
}
* {
  box-sizing: border-box;
}
[hidden] {
  display: none !important;
}
body {
  margin: 0;
}
button,
input,
textarea,
select {
  font: inherit;
}
button,
a,
input,
select,
textarea {
  -webkit-tap-highlight-color: transparent;
}
button,
input,
select {
  min-height: 44px;
}
button {
  cursor: pointer;
}
a {
  color: var(--link);
  text-underline-offset: 3px;
}
button {
  padding: 8px 12px;
  background: var(--surface);
  border: 1px solid var(--rule);
  color: var(--ink);
  border-radius: 0;
  font-weight: 600;
}
button:hover:not(:disabled) {
  background: var(--paper);
  border-color: var(--ink);
}
button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}
button.primary {
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
}
button.primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}
button.quiet {
  border-color: transparent;
  background: transparent;
}
button.danger {
  color: var(--danger);
}
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}
input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--rule);
  border-radius: 0;
  background: var(--surface);
  color: var(--ink);
  padding: 10px 12px;
}
textarea {
  resize: vertical;
  min-height: 120px;
}
label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
}
label > input,
label > select,
label > textarea {
  margin-top: 4px;
}
h1,
h2,
h3,
p {
  margin: 0;
}
h1 {
  font-size: 1.75rem;
  line-height: 1.15;
  letter-spacing: -0.035em;
  font-weight: 800;
}
h2 {
  font-size: 1.3rem;
  line-height: 1.3;
  letter-spacing: -0.02em;
}
h3 {
  font-size: 1rem;
}
small,
.muted {
  color: var(--muted);
  font-size: 0.875rem;
}
.utility {
  font:
    0.75rem/1.4 "Courier New",
    monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: 12px;
  left: 16px;
  z-index: 20;
  background: var(--surface);
  padding: 12px;
}
.skip-link:not(:focus) {
  clip-path: inset(50%);
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  white-space: nowrap;
}
.shell {
  min-height: 100dvh;
}
.topbar {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 24px;
  background: #26262b;
  color: #fafafa;
  border-bottom: 1px solid #52525b;
}
.app-title {
  display: flex;
  gap: 12px;
  align-items: center;
  font-size: 1rem;
  font-weight: 750;
  letter-spacing: -0.02em;
}
.app-symbol {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 28px;
  border: 1px solid #a1a1aa;
  font-size: 19px;
}
.account {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.8125rem;
}
.topbar button {
  background: transparent;
  color: #fafafa;
  border-color: #72727b;
}
.topbar button:hover:not(:disabled) {
  background: #3f3f46;
  border-color: #fafafa;
}
.topbar :focus-visible {
  outline-color: #fafafa;
}
.workspace {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  min-height: calc(100dvh - 69px);
}
.sidebar {
  background: var(--dark);
  color: var(--on-dark);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  border-top: 3px solid var(--accent);
}
.sidebar :focus-visible {
  outline-color: var(--accent);
}
.sidebar .muted {
  color: var(--muted-dark);
}
.sidebar label {
  color: var(--muted-dark);
}
.sidebar select {
  background: var(--dark-panel);
  color: var(--on-dark);
  border-color: var(--dark-rule);
}
.brand-lockup {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
}
.brand-lockup img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}
.brand-lockup strong {
  font-size: 1.125rem;
  line-height: 1.25;
  font-weight: 750;
}
.sidebar nav {
  display: grid;
  gap: 8px;
}
.sidebar nav button {
  text-align: left;
  display: flex;
  justify-content: space-between;
  color: var(--on-dark);
  background: transparent;
  border-color: transparent;
}
.sidebar nav button:hover:not(:disabled) {
  border-color: var(--dark-rule);
  background: var(--dark-panel);
}
.sidebar nav button[aria-current="page"] {
  border-color: var(--dark-rule);
  background: var(--dark-panel);
  border-left: 3px solid var(--accent);
}
.sidebar-foot {
  margin-top: auto;
  border-top: 1px solid var(--dark-rule);
  padding-top: 16px;
  display: grid;
  gap: 8px;
}
.main {
  min-width: 0;
  background: var(--paper);
}
.mode-banner {
  padding: 12px 24px;
  border-bottom: 1px solid var(--rule);
  background: var(--surface);
  font-size: 0.875rem;
}
.mode-banner strong {
  margin-right: 8px;
}
.mode-banner[data-mode="live"] {
  border-bottom: 3px solid var(--danger);
}
.page-heading {
  padding: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.page-heading .utility {
  color: var(--muted);
  margin-bottom: 4px;
}
.search-bar {
  padding: 0 24px 16px;
  display: grid;
  grid-template-columns: minmax(140px, 1fr) minmax(160px, 240px);
  align-items: end;
  gap: 12px;
}
.search-form {
  display: flex;
  align-items: end;
  gap: 8px;
}
.search-form label {
  flex: 1;
}
.work-area {
  display: grid;
  grid-template-columns: minmax(275px, 35%) minmax(0, 1fr);
  border-top: 1px solid var(--rule);
  min-height: 640px;
}
.conversation-list {
  border-right: 1px solid var(--rule);
  background: var(--surface);
  min-width: 0;
}
.list-title {
  padding: 12px 20px;
  border-bottom: 1px solid var(--rule);
  color: var(--muted);
}
.conversation-row {
  display: block;
  width: 100%;
  text-align: left;
  padding: 20px;
  border: 0;
  border-bottom: 1px solid var(--rule);
  background: transparent;
  font-weight: 400;
}
.conversation-row:hover:not(:disabled) {
  background: var(--paper);
}
.conversation-row[aria-current="true"] {
  background: var(--paper);
  box-shadow: inset 3px 0 var(--focus);
}
.conversation-row .row-top {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
  font-size: 0.75rem;
  color: var(--muted);
}
.conversation-row .row-subject {
  display: flex;
  gap: 8px;
  align-items: baseline;
  margin-bottom: 8px;
  line-height: 1.35;
}
.conversation-row.unread .row-subject {
  font-weight: 750;
}
.unread-dot {
  width: 7px;
  height: 7px;
  flex: 0 0 7px;
  background: var(--focus);
}
.row-preview {
  color: var(--muted);
  font-size: 0.875rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  overflow-wrap: anywhere;
}
.detail {
  min-width: 0;
  padding: 24px;
}
.detail-header {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 20px;
  margin-bottom: 24px;
}
.detail-header h2 {
  overflow-wrap: anywhere;
  margin: 8px 0;
}
.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-top: 8px;
}
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
}
.assignment {
  max-width: 300px;
  margin-top: 16px;
}
.message {
  padding: 20px 0;
  border-bottom: 1px solid var(--rule);
}
.message:first-child {
  padding-top: 0;
}
.message-heading {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  justify-content: space-between;
}
.message-heading strong {
  overflow-wrap: anywhere;
  min-width: 0;
}
.message-address {
  overflow-wrap: anywhere;
  font-size: 0.875rem;
  margin-top: 4px;
}
.message-body {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  margin: 16px 0;
  font: inherit;
  line-height: 1.65;
}
.delivery {
  font:
    0.75rem/1.5 "Courier New",
    monospace;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  padding: 4px 8px;
  display: inline-block;
  border: 1px solid var(--rule);
}
.delivery.failure {
  border-color: var(--danger);
  color: var(--danger);
}
.delivery.success {
  color: var(--success);
}
.attachments {
  padding: 0;
  margin: 12px 0 0;
  list-style: none;
  display: grid;
  gap: 8px;
}
.attachments a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  overflow-wrap: anywhere;
}
.attachments li {
  font-size: 0.875rem;
}
.reply-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}
.notes {
  border-top: 2px solid var(--rule);
  margin-top: 32px;
  padding-top: 20px;
}
.notes > p {
  margin: 8px 0 16px;
}
.note {
  border-left: 2px solid var(--rule);
  padding-left: 12px;
  margin: 20px 0;
}
.note p {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  margin-top: 8px;
}
.note-form {
  display: grid;
  gap: 8px;
}
.note-form button {
  justify-self: start;
}
.empty-state {
  padding: 48px 24px;
  color: var(--muted);
}
.empty-state h2 {
  color: var(--ink);
  margin-bottom: 12px;
}
.empty-mark {
  font:
    2.5rem/1 "Courier New",
    monospace;
  margin-bottom: 24px;
  color: var(--muted);
}
.empty-state p {
  max-width: 460px;
}
.notice {
  margin: 0 24px 16px;
  padding: 12px 16px;
  border-left: 3px solid var(--focus);
  background: var(--surface);
  overflow-wrap: anywhere;
}
.notice.error {
  border-color: var(--danger);
  color: var(--danger);
  background: var(--danger-bg);
}
.back-button,
.detail-refresh {
  display: none;
}
.inline-error {
  color: var(--danger);
  white-space: pre-wrap;
}
.inline-status {
  color: var(--muted);
}
.sign-in {
  max-width: 600px;
  margin: 10vh auto;
  padding: 40px 24px;
}
.sign-in h1 {
  font-size: 2.75rem;
  margin: 16px 0;
}
.sign-in p {
  margin: 20px 0;
}
.sign-in a {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  padding: 12px 20px;
  background: var(--dark);
  color: var(--on-dark);
  font-weight: 650;
}
.sign-in .utility {
  color: var(--muted);
}
dialog {
  padding: 0;
  width: min(760px, calc(100vw - 32px));
  max-height: calc(100dvh - 32px);
  border: 1px solid var(--rule);
  border-top: 4px solid var(--accent);
  color: var(--ink);
  background: var(--paper);
  overflow: auto;
}
dialog::backdrop {
  background: #11111199;
}
.composer-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--rule);
}
.composer-form {
  padding: 24px;
  display: grid;
  gap: 16px;
}
.composer-form textarea {
  min-height: 200px;
}
.composer-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.composer-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding-top: 8px;
}
.composer-footer .spacer {
  flex: 1;
}
.composer-mode {
  padding: 12px;
  border: 1px solid var(--rule);
  font-size: 0.875rem;
}
.file-input {
  padding: 8px;
}
.upload-list {
  display: grid;
  gap: 8px;
  padding: 0;
  list-style: none;
  margin: 0;
}
.upload-list li {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
  overflow-wrap: anywhere;
}
.compose-error {
  margin: 0;
}
@media (min-width: 1500px) {
  .work-area {
    grid-template-columns: 380px minmax(0, 1fr);
  }
  .detail {
    padding: 32px 40px;
  }
  .message-body {
    max-width: 78ch;
  }
}
@media (max-width: 1050px) {
  .workspace {
    grid-template-columns: 200px minmax(0, 1fr);
  }
  .work-area {
    grid-template-columns: 280px minmax(0, 1fr);
  }
  .detail {
    padding: 20px;
  }
  .account-name {
    display: none;
  }
}
@media (max-width: 800px) {
  .topbar {
    padding: 12px 16px;
  }
  .workspace {
    display: block;
  }
  .sidebar {
    padding: 16px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px 16px;
  }
  .brand-lockup {
    grid-column: 1;
  }
  .brand-picker {
    grid-column: 1 / -1;
  }
  .sidebar > .primary {
    grid-column: 2;
    grid-row: 1;
  }
  .sidebar nav {
    display: flex;
    gap: 4px;
    grid-column: 1 / -1;
  }
  .sidebar nav button {
    flex: 1;
  }
  .sidebar-foot {
    display: none;
  }
  .brand-lockup img {
    width: 44px;
    height: 44px;
  }
  .mode-banner {
    padding: 12px 16px;
  }
  .page-heading {
    padding: 20px 16px 16px;
  }
  .search-bar {
    padding: 0 16px 16px;
  }
  .work-area {
    display: block;
    min-height: 400px;
  }
  .conversation-list {
    border-right: 0;
  }
  .detail {
    display: none;
    padding: 20px 16px;
  }
  .main.has-detail .conversation-list {
    display: none;
  }
  .main.has-detail .detail {
    display: block;
  }
  .main.has-detail .search-bar,
  .main.has-detail .page-heading {
    display: none;
  }
  .detail-refresh {
    display: inline-block;
  }
  .back-button {
    display: inline-flex;
    align-items: center;
    margin-bottom: 12px;
  }
  .notice {
    margin: 0 16px 16px;
  }
  .detail-header {
    margin-bottom: 16px;
  }
  .account {
    gap: 8px;
  }
  .account button {
    font-size: 0.8125rem;
  }
}
@media (max-width: 480px) {
  .search-bar {
    grid-template-columns: 1fr;
  }
  .composer-fields {
    grid-template-columns: 1fr;
  }
  dialog {
    width: calc(100vw - 16px);
    max-height: calc(100dvh - 16px);
  }
  .composer-head,
  .composer-form {
    padding: 16px;
  }
  .composer-footer .spacer {
    display: none;
  }
  .composer-footer button {
    flex: 1;
  }
  .app-title {
    font-size: 0.9375rem;
    gap: 8px;
  }
  .sidebar nav button {
    font-size: 0.875rem;
    padding: 8px;
  }
  .brand-lockup strong {
    font-size: 1rem;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
  }
}

/* Keep the close action visible during long mobile drafts; filenames may wrap, actions may not. */
.composer-head {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--paper);
}
.upload-list li > span {
  min-width: 0;
  overflow-wrap: anywhere;
}
.upload-list li > button {
  flex: 0 0 auto;
  white-space: nowrap;
}