:root {
  /* Slock system tokens: brutal grid, hard borders, yellow rail, no radius drift. */
  --slock-ink: #111111;
  --slock-muted: #6f675c;
  --slock-faint: #a59d91;
  --slock-bg: #f1e5cf;
  --slock-paper: #fffaf0;
  --slock-paper-2: #fffdf6;
  --slock-yellow: #ffd93d;
  --slock-yellow-soft: #fff1a6;
  --slock-pink: #f774a7;
  --slock-purple: #c7b9ef;
  --slock-danger: #b3361e;
  --slock-danger-soft: #ffd6c9;
  --slock-green: #1f9d55;
  --slock-line: #111111;
  --slock-border: 2px solid var(--slock-line);
  --slock-border-heavy: 3px solid var(--slock-line);
  --slock-shadow: 4px 4px 0 var(--slock-line);
  --slock-shadow-sm: 3px 3px 0 var(--slock-line);
  --slock-shadow-xs: 2px 2px 0 var(--slock-line);
  --rail-w: 58px;
  --sidebar-w: 246px;
  --list-w: 340px;
  --topbar-h: 54px;
  --hit: 38px;
  --hit-sm: 28px;
  --gap-1: 3px;
  --gap-2: 6px;
  --gap-3: 9px;
  --gap-4: 12px;
  --gap-5: 15px;
  --text-xs: 11px;
  --text-sm: 12px;
  --text-base: 14px;
  --text-lg: 17px;
  --text-xl: 21px;
  --font-sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--slock-ink);
  color-scheme: light;
}

* { box-sizing: border-box; }

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

html {
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  color: var(--slock-ink);
  background:
    linear-gradient(rgba(17, 17, 17, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 17, 17, .035) 1px, transparent 1px),
    var(--slock-bg);
  background-size: 28px 28px;
  font: var(--text-base)/1.32 var(--font-sans);
}

button,
input,
textarea { font: inherit; }

button {
  min-height: var(--hit);
  border: var(--slock-border);
  border-radius: 0;
  background: var(--slock-paper-2);
  color: var(--slock-ink);
  box-shadow: var(--slock-shadow-sm);
  padding: 0 11px;
  cursor: pointer;
  font-weight: 850;
  line-height: 1;
  text-align: center;
  touch-action: manipulation;
  transition-property: transform, box-shadow, background-color, opacity;
  transition-duration: 140ms;
  transition-timing-function: cubic-bezier(.2, 0, 0, 1);
}

button:hover:not(:disabled) {
  transform: translate(-1px, -1px);
  box-shadow: var(--slock-shadow);
}

button:active:not(:disabled) {
  transform: scale(.96);
  box-shadow: var(--slock-shadow-xs);
}

button:disabled {
  opacity: .5;
  cursor: not-allowed;
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 4px solid rgba(255, 217, 61, .62);
  outline-offset: 2px;
}

input,
textarea {
  width: 100%;
  border: var(--slock-border);
  border-radius: 0;
  background: var(--slock-paper-2);
  color: var(--slock-ink);
  padding: 0 11px;
  font-weight: 650;
  box-shadow: none;
}

input { min-height: var(--hit); }
textarea {
  min-height: 132px;
  padding: 10px 11px;
  line-height: 1.5;
  resize: vertical;
}

input::placeholder,
textarea::placeholder { color: #8d867b; }

h1,
h2,
p { margin: 0; }

h1,
h2 {
  letter-spacing: -.05em;
  text-wrap: balance;
}

.primary { background: var(--slock-yellow); }
.ghost { background: var(--slock-paper-2); }
.danger { background: var(--slock-danger-soft); color: var(--slock-danger); }
.full { width: 100%; }
.hidden { display: none !important; }
.muted { color: var(--slock-muted); }
.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;
  left: 12px;
  top: 12px;
  z-index: 50;
  transform: translateY(-140%);
  border: var(--slock-border-heavy);
  background: var(--slock-yellow);
  color: var(--slock-ink);
  box-shadow: var(--slock-shadow-sm);
  padding: 8px 12px;
  font-weight: 900;
}
.skip-link:focus { transform: translateY(0); }

/* Setup */
.setup {
  width: 100%;
  height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
  overflow: auto;
}
.card {
  background: var(--slock-paper);
  border: var(--slock-border-heavy);
  box-shadow: var(--slock-shadow);
}
.setup-card { width: min(680px, 100%); padding: 28px; }
.brand-line,
.side-header {
  display: flex;
  gap: 14px;
  align-items: center;
}
.mark,
.rail-logo {
  display: grid;
  place-items: center;
  background: var(--slock-ink);
  color: var(--slock-yellow);
  border: var(--slock-border-heavy);
  box-shadow: var(--slock-shadow-sm);
  font: 900 18px/1 var(--font-mono);
}
.mark { width: 54px; height: 54px; }
.setup-card > .muted { margin-top: 20px; }
.connect-form { display: grid; gap: 14px; margin-top: 22px; }
.connect-form label,
.composer label { display: grid; gap: 6px; font-weight: 850; }
.row { display: flex; gap: 10px; }
.row input { flex: 1; min-width: 0; }
.status {
  min-height: 44px;
  max-height: 180px;
  margin-top: 14px;
  overflow: auto;
  white-space: pre-wrap;
  border: var(--slock-border);
  background: var(--slock-ink);
  color: #fff;
  padding: 12px;
  font: 13px/1.45 var(--font-mono);
}

/* App shell */
.app-shell {
  display: grid;
  grid-template-columns: var(--rail-w) var(--sidebar-w) minmax(0, 1fr);
  width: 100%;
  height: 100dvh;
  min-height: 0;
  overflow: hidden;
}

.app-shell.nav-collapsed {
  grid-template-columns: var(--rail-w) minmax(0, 1fr);
}
.app-shell.nav-collapsed .sidebar { display: none; }
.app-shell.nav-collapsed .rail-icon-nav::before { transform: translate(3px, 1px) rotate(135deg); }
.app-shell.nav-collapsed .rail-icon-nav::after { transform: translate(3px, -1px) rotate(-135deg); }

.app-rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  min-height: 0;
  padding: 8px 0;
  border-right: var(--slock-border-heavy);
  background: var(--slock-yellow);
}
.rail-logo {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
}
.rail-btn,
.rail-item {
  width: 42px;
  height: 42px;
  min-height: 42px;
  display: grid;
  place-items: center;
  border: var(--slock-border);
  background: var(--slock-paper-2);
  box-shadow: var(--slock-shadow-sm);
}
.rail-primary { background: var(--slock-ink); color: var(--slock-yellow); }
.rail-item.active { background: var(--slock-paper-2); outline: 3px solid var(--slock-line); outline-offset: -6px; }
.rail-spacer { flex: 1 1 auto; }
.rail-status {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: var(--slock-border);
  background: var(--slock-paper);
  box-shadow: var(--slock-shadow-xs);
}
.rail-icon {
  position: relative;
  display: block;
  width: 19px;
  height: 19px;
}
.rail-icon-compose::before,
.rail-icon-compose::after,
.rail-icon-mail::before,
.rail-icon-mail::after,
.rail-icon-nav::before,
.rail-icon-nav::after {
  content: "";
  position: absolute;
  border: 2px solid currentColor;
}
.rail-icon-compose::before { inset: 4px 3px 3px 5px; background: transparent; }
.rail-icon-compose::after { width: 12px; height: 0; right: 1px; top: 3px; transform: rotate(-38deg); border-width: 2px 0 0; }
.rail-icon-mail::before { inset: 4px 1px 5px; }
.rail-icon-mail::after { left: 5px; right: 5px; top: 7px; height: 8px; border-width: 0 0 2px 2px; transform: rotate(-45deg); }
.rail-icon-nav::before,
.rail-icon-nav::after {
  width: 13px;
  height: 7px;
  left: 2px;
  border-width: 2px 0 0 2px;
  transition-property: transform;
  transition-duration: 140ms;
  transition-timing-function: cubic-bezier(.2, 0, 0, 1);
}
.rail-icon-nav::before { top: 3px; transform: translate(-1px, 1px) rotate(-45deg); }
.rail-icon-nav::after { bottom: 3px; transform: translate(-1px, -1px) rotate(45deg); }

.sidebar {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  border-right: var(--slock-border-heavy);
  background: var(--slock-bg);
}
.side-header {
  flex: 0 0 auto;
  min-height: var(--topbar-h);
  display: grid;
  align-content: center;
  min-width: 0;
  padding: 0 14px;
  border-bottom: var(--slock-border-heavy);
  background: var(--slock-paper);
}
.side-header h1 { overflow: hidden; font-size: var(--text-xl); line-height: 1; text-overflow: ellipsis; white-space: nowrap; }
.side-header p { min-width: 0; margin-top: 3px; overflow: hidden; color: var(--slock-muted); font-size: var(--text-xs); font-weight: 800; text-overflow: ellipsis; white-space: nowrap; }
.panel {
  flex: 0 0 auto;
  padding: 9px 11px;
  border-bottom: var(--slock-border-heavy);
}
.grow { flex: 1 1 auto; min-height: 0; overflow: auto; }
.mailbox-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mailbox-panel-head {
  flex: 0 0 auto;
}
.mailbox-panel-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 7px;
}
.mailbox-panel-actions button {
  width: 100%;
  min-height: var(--hit-sm);
  font-size: 11px;
}
.mailboxes {
  min-height: 0;
}
.section-title {
  margin-bottom: 12px;
  color: var(--slock-muted);
  font: 900 12px/1 var(--font-mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.folder,
.mailbox-row {
  width: 100%;
  min-height: var(--hit);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 7px;
  background: var(--slock-paper-2);
  text-align: left;
}
.folder.active,
.mailbox-row.active,
.mailbox-entry.active > .mailbox-row {
  background: var(--slock-yellow);
  box-shadow: var(--slock-shadow-sm);
}
.folder strong {
  min-width: 26px;
  padding: 2px 7px;
  border: var(--slock-border);
  background: var(--slock-paper-2);
  font: 900 12px/1 var(--font-mono);
  text-align: center;
}
.mailbox-entry {
  position: relative;
  margin-bottom: 7px;
  border: var(--slock-border);
  background: var(--slock-paper-2);
  box-shadow: var(--slock-shadow-xs);
}
.mailbox-entry > .mailbox-row {
  margin-bottom: 0;
  border: 0;
  box-shadow: none;
  background: transparent;
  padding-right: 8px;
}
.mailbox-row div { min-width: 0; }
.mailbox-row strong,
.mailbox-row span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.mailbox-row strong { font-size: 14px; line-height: 1.05; }
.mailbox-row span { color: var(--slock-muted); font-size: 11px; font-weight: 800; }
.mailbox-row em {
  flex: 0 0 auto;
  color: var(--slock-ink);
  font: italic 900 13px/1 var(--font-mono);
}
.mailbox-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  padding: 0 7px 7px;
}
.mailbox-comm-badge {
  flex: 1 1 100%;
  min-height: 22px;
  display: inline-flex;
  align-items: center;
  width: 100%;
  overflow: hidden;
  color: var(--slock-muted);
  font: 850 10px/1.2 var(--font-mono);
  text-overflow: ellipsis;
  white-space: nowrap;
}
.mailbox-actions button {
  flex: 1 0 auto;
  min-width: 42px;
  min-height: var(--hit-sm);
  padding: 0 6px;
  font-size: 11px;
  box-shadow: var(--slock-shadow-xs);
}
.mailbox-actions button:hover:not(:disabled) { box-shadow: var(--slock-shadow-xs); }
.footer {
  flex: 0 0 auto;
  border-top: var(--slock-border-heavy);
  padding: 10px 14px;
  color: var(--slock-muted);
  font-size: 12px;
  font-weight: 800;
  background: var(--slock-bg);
}
.rail-status .dot { margin-right: 0; }
.dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 8px;
  border: var(--slock-border);
  border-radius: 50%;
  background: var(--slock-green);
}

/* Main */
.mail-layout {
  min-width: 0;
  min-height: 0;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--slock-paper);
}
.toolbar {
  flex: 0 0 var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-bottom: var(--slock-border-heavy);
  background: var(--slock-paper);
}
.search-box {
  display: flex;
  flex: 1 1 auto;
  gap: 8px;
  min-width: 0;
}
.search-box input { flex: 1 1 auto; min-width: 0; }
.search-box button,
.toolbar > button { flex: 0 0 auto; min-width: 66px; height: var(--hit); }
.small-toggle {
  min-height: var(--hit);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--slock-ink);
  font-weight: 900;
  white-space: nowrap;
}
.filter-toggle {
  flex: 0 0 auto;
  border: var(--slock-border);
  background: var(--slock-paper-2);
  box-shadow: var(--slock-shadow-sm);
  padding: 0 10px;
  cursor: pointer;
  transition-property: transform, box-shadow, background-color;
  transition-duration: 140ms;
  transition-timing-function: cubic-bezier(.2, 0, 0, 1);
}
.filter-toggle:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--slock-shadow);
}
.small-toggle input {
  width: 16px;
  height: 16px;
  min-height: 0;
  padding: 0;
  border: var(--slock-border);
  border-radius: 0;
  appearance: none;
  background: var(--slock-paper);
}
.small-toggle input:checked {
  background:
    linear-gradient(45deg, transparent 45%, var(--slock-ink) 46% 54%, transparent 55%),
    linear-gradient(-45deg, transparent 45%, var(--slock-ink) 46% 54%, transparent 55%),
    var(--slock-yellow);
}
.content-grid {
  flex: 1 1 auto;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(300px, var(--list-w)) minmax(0, 1fr);
  overflow: hidden;
}
.message-list-card {
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-right: var(--slock-border-heavy);
  background: var(--slock-paper);
}
.list-header {
  flex: 0 0 auto;
  padding: 13px 15px;
  border-bottom: var(--slock-border-heavy);
  background: var(--slock-paper);
}
.list-header h2 { overflow: hidden; font-size: 19px; line-height: 1.05; text-overflow: ellipsis; white-space: nowrap; }
.list-header p { margin-top: 4px; overflow: hidden; color: var(--slock-muted); font-size: var(--text-xs); font-weight: 800; text-overflow: ellipsis; white-space: nowrap; }
.message-list {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
}
.message-item {
  width: 100%;
  min-height: 82px;
  display: block;
  border: 0;
  border-bottom: var(--slock-border);
  background: var(--slock-paper);
  box-shadow: none;
  padding: 11px 14px 10px;
  text-align: left;
  white-space: normal;
}
.message-item:hover:not(:disabled) {
  transform: none;
  box-shadow: none;
  background: var(--slock-yellow-soft);
}
.message-item:active:not(:disabled) { transform: none; box-shadow: none; }
.message-item.active {
  background: var(--slock-yellow);
  box-shadow: inset 6px 0 0 var(--slock-line);
}
.message-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: start;
}
.subject {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 950;
  line-height: 1.1;
}
.date {
  color: var(--slock-muted);
  font: 900 11px/1.1 var(--font-mono);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.from,
.preview {
  margin-top: 3px;
  overflow: hidden;
  color: var(--slock-muted);
  font-size: 12px;
  font-weight: 850;
  line-height: 1.1;
}
.from { white-space: nowrap; text-overflow: ellipsis; }
.preview {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.chip {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  min-height: 18px;
  margin-top: 8px;
  border: var(--slock-border);
  background: var(--slock-paper-2);
  color: var(--slock-ink);
  padding: 1px 6px;
  font: 900 10px/1 var(--font-sans);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.attachment-chip { gap: 6px; text-decoration: none; }
.attachment-chip small { color: var(--slock-muted); font: 900 10px/1 var(--font-mono); }
.attachment-chip:hover { background: var(--slock-yellow-soft); }
.file-glyph {
  border-right: var(--slock-border);
  margin-left: -8px;
  padding: 4px 6px;
  background: var(--slock-yellow);
  font: 900 10px/1 var(--font-mono);
}

.reader-card {
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: var(--slock-paper);
}
.empty-state {
  min-height: 100%;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 8px;
  padding: 24px;
  color: var(--slock-muted);
  text-align: center;
}
.empty-state h2 { color: var(--slock-muted); font-size: 24px; }
.empty-state p { font-weight: 750; }
.empty-icon {
  display: grid;
  place-items: center;
  width: 72px;
  height: 54px;
  border: var(--slock-border-heavy);
  background: var(--slock-yellow);
  color: var(--slock-ink);
  box-shadow: var(--slock-shadow-sm);
  font: 900 13px/1 var(--font-mono);
}
.reader {
  height: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding: 16px 18px 18px;
}
.reader-header {
  flex: 0 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: start;
  padding-bottom: 12px;
  border-bottom: var(--slock-border-heavy);
}
.reader-title-block { min-width: 0; }
.reader h2 {
  margin-top: 2px;
  font-size: 20px;
  line-height: 1.08;
}
.meta,
.recipient-line,
.from-line {
  color: var(--slock-muted);
  font-weight: 750;
}
.meta { font-variant-numeric: tabular-nums; }
.from-line {
  margin-top: 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.reader-actions {
  display: flex;
  gap: 8px;
  align-items: flex-start;
}
.reader-actions button {
  width: 62px;
  height: var(--hit);
  min-height: var(--hit);
  padding: 0 10px;
}
.reader-actions .primary,
.reader-actions .danger { width: 58px; }
.recipient-line {
  flex: 0 0 auto;
  margin-top: 8px;
}
.mail-frame {
  width: 100%;
  flex: 1 1 auto;
  min-height: 0;
  margin-top: 12px;
  border: var(--slock-border-heavy);
  background: var(--slock-paper-2);
}
.attachments {
  flex: 0 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.toast {
  position: fixed;
  right: 14px;
  bottom: 14px;
  z-index: 20;
  max-width: min(420px, calc(100vw - 40px));
  border: var(--slock-border-heavy);
  background: var(--slock-ink);
  color: #fff;
  box-shadow: var(--slock-shadow);
  padding: 9px 11px;
  font-weight: 850;
}
dialog {
  width: min(720px, calc(100vw - 30px));
  border: var(--slock-border-heavy);
  background: var(--slock-paper);
  box-shadow: var(--slock-shadow);
  padding: 20px;
}
dialog::backdrop { background: rgba(17, 17, 17, .35); }
.composer { display: grid; gap: 12px; }
.composer-head,
.composer-actions {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
}
.comm-form { max-width: 560px; }
.comm-summary {
  display: grid;
  gap: 2px;
  margin-bottom: 2px;
  padding: 10px 12px;
  border: var(--slock-border);
  background: var(--slock-paper-2);
}
.comm-summary strong {
  overflow: hidden;
  font-size: 16px;
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.comm-summary span {
  overflow: hidden;
  color: var(--slock-muted);
  font-size: 12px;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.comm-fieldset {
  margin: 0;
  padding: 0;
  border: 0;
  display: grid;
  gap: 8px;
}
.comm-fieldset + .comm-fieldset { margin-top: 4px; }
.comm-fieldset legend {
  margin-bottom: 8px;
  color: var(--slock-muted);
  font: 900 12px/1 var(--font-mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}
.comm-option {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  min-height: var(--hit);
  padding: 10px 11px;
  border: var(--slock-border);
  background: var(--slock-paper-2);
}
.comm-option input {
  width: 16px;
  min-height: 16px;
  margin-top: 3px;
  padding: 0;
}
.comm-option span { display: grid; gap: 2px; }
.comm-option strong { font-size: 14px; }
.comm-option small {
  color: var(--slock-muted);
  font-size: 11px;
  font-weight: 800;
}
.comm-flags { grid-template-columns: 1fr 1fr; }
.comm-flags .small-toggle {
  padding: 10px 11px;
  border: var(--slock-border);
  background: var(--slock-paper-2);
}
.icon-btn {
  width: var(--hit);
  min-width: var(--hit);
  padding: 0;
  font-size: 24px;
}
#composeStatus,
#commStatus { color: var(--slock-muted); font-weight: 800; }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 1100px) {
  :root { --sidebar-w: 224px; --list-w: 320px; }
}

@media (max-width: 860px) {
  html,
  body { overflow: auto; }
  .app-shell {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    height: auto;
    min-height: 100dvh;
    overflow: visible;
  }
  .app-rail {
    position: sticky;
    top: 0;
    min-height: 100dvh;
    height: 100dvh;
  }
  .sidebar {
    grid-column: 2;
    min-height: auto;
    overflow: visible;
    border-right: 0;
    border-bottom: var(--slock-border-heavy);
  }
  .mail-layout {
    grid-column: 1 / -1;
    height: auto;
    min-height: 100dvh;
    overflow: visible;
  }
  .toolbar { flex-wrap: wrap; height: auto; flex-basis: auto; }
  .search-box { flex-basis: 100%; }
  .content-grid {
    grid-template-columns: 1fr;
    overflow: visible;
  }
  .message-list-card {
    max-height: 46dvh;
    border-right: 0;
    border-bottom: var(--slock-border-heavy);
  }
  .reader-card { min-height: 70dvh; overflow: visible; }
  .reader { min-height: 70dvh; }
  .reader-header { grid-template-columns: 1fr; }
  .reader-actions button { flex: 1 1 auto; width: auto; height: var(--hit); min-height: var(--hit); }
  .mail-frame { min-height: 420px; }
}