:root {
  color-scheme: light;

  --sunrise-night: #26418f;
  --sunrise-violet: #a48cc0;
  --sunrise-vermilion: #e8613c;
  --sunrise-ochre: #d19a3e;
  --sunrise-cream: #f7e6bd;
  --sunrise-vermilion-deep: #b8431f;

  --mark-bright: #00e676;
  --mark-on-bright: #06210f;

  --md-primary: var(--sunrise-vermilion-deep);
  --md-on-primary: #ffffff;
  --md-link: var(--sunrise-night);
  --md-primary-container: #fbdcd2;
  --md-on-primary-container: #5c1f0b;
  --md-secondary-container: #f6e2b8;
  --md-on-secondary-container: #42300c;
  --md-tertiary-container: #dde5f5;
  --md-on-tertiary-container: #1b2f66;
  --md-error: #b3261e;
  --md-error-container: #ffdad6;
  --md-on-error-container: #410002;
  --md-surface: #fffaef;
  --md-surface-container-lowest: #ffffff;
  --md-surface-container-low: #fdf4e4;
  --md-surface-container: #faecd6;
  --md-surface-container-high: #f5e3c2;
  --md-on-surface: #1f3161;
  --md-on-surface-variant: #6f6155;
  --md-outline: #c9b48d;
  --md-outline-variant: #eddfc4;
  --md-inverse-surface: #172049;
  --md-inverse-on-surface: var(--sunrise-cream);
  --md-scrim: rgba(23, 32, 73, 0.34);

  --backdrop-base: #0e1130;
  --backdrop-a: #e8613c;
  --backdrop-b: #3a2a5e;
  --backdrop-c: #26418f;

  --state-hover: 0.08;
  --state-focus: 0.1;
  --state-pressed: 0.12;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 40px;

  --touch-min: 48px;
  --touch-visual: 36px;
  --mark-size: 14px;

  --shape-xs: 4px;
  --shape-sm: 8px;
  --shape-md: 12px;
  --shape-lg: 16px;
  --shape-xl: 28px;
  --shape-full: 999px;

  --elev-1: 0 1px 2px rgba(31, 49, 97, 0.18), 0 1px 3px 1px rgba(31, 49, 97, 0.08);
  --elev-2: 0 1px 2px rgba(31, 49, 97, 0.18), 0 2px 6px 2px rgba(31, 49, 97, 0.08);

  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --dur-short: 150ms;
  --dur-medium: 250ms;

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans TC", "Liberation Sans", sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, "Cascadia Code", "Roboto Mono", Consolas, monospace;

  --bar-height: 64px;
  --sub-bar-height: 0px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: transparent;
  color: var(--md-on-surface);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  line-height: 1.5;
  letter-spacing: 0.006em;
  text-wrap: pretty;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

.title-large {
  text-wrap: balance;
  font-size: 1.375rem;
  line-height: 1.75rem;
  font-weight: 600;
  letter-spacing: 0;
  margin: 0;
}

.title-small {
  font-size: 0.875rem;
  line-height: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.006em;
  margin: 0;
}

.label-medium {
  font-size: 0.75rem;
  line-height: 1rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  margin: 0;
}

.body-medium {
  font-size: 0.9375rem;
  line-height: 1.6;
  max-width: 68ch;
  margin: 0;
}


code,
pre,
input,
textarea,
select {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.meter-label.over {
  color: var(--md-error);
  font-weight: 600;
}

:focus-visible {
  outline: 2px solid var(--md-primary);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  z-index: 20;
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--shape-sm);
  font-size: 0.875rem;
}

.skip-link:focus {
  left: 16px;
}

.top-app-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: var(--bar-height);
  padding: var(--space-2) var(--space-4);
  padding-top: max(var(--space-2), env(safe-area-inset-top));
  background: var(--sunrise-ochre);
  border-bottom: 1px solid color-mix(in srgb, var(--sunrise-ochre) 72%, var(--md-on-surface));
}

.bar-logo {
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: var(--shape-sm);
}

.bar-titles p {
  color: var(--md-on-surface-variant);
}





.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-5);
  align-items: start;
  max-width: 1680px;
  margin: 0 auto;
  padding: var(--space-5) var(--space-6) 0;
}

.pane {
  min-width: 0;
  padding: var(--space-5);
  border: 1px solid color-mix(in srgb, var(--md-outline-variant) 78%, transparent);
  border-radius: var(--shape-lg);
  background: color-mix(in srgb, var(--md-surface-container-lowest) 94%, transparent);
  backdrop-filter: saturate(150%) blur(18px);
  -webkit-backdrop-filter: saturate(150%) blur(18px);
  box-shadow: var(--elev-1);
}

.pane > :last-child {
  margin-bottom: 0;
}

.provider-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.provider-label {
  font-family: var(--font-sans);
  font-size: 0.78125rem;
  font-weight: 600;
  color: var(--md-on-surface);
}

.pane-title {
  margin: 0 0 var(--space-3);
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--md-on-surface);
}

.pane-right {
  position: sticky;
  top: calc(var(--bar-height) + var(--sub-bar-height) + 24px);
  max-height: calc(100vh - var(--bar-height) - var(--sub-bar-height) - 48px);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.claim {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin: 0 0 var(--space-5);
  padding: var(--space-4);
  border-radius: var(--shape-md);
  background: var(--md-tertiary-container);
  color: var(--md-on-tertiary-container);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  line-height: 1.55;
}

.site-footer {
  box-sizing: border-box;
  width: calc(100% - var(--space-6) * 2);
  max-width: calc(1680px - var(--space-6) * 2);
  margin: var(--space-6) auto max(var(--space-6), env(safe-area-inset-bottom));
  color: var(--md-inverse-on-surface);
  font-family: var(--font-sans);
  font-size: 0.71875rem;
  line-height: 1.6;
}

.site-footer p {
  margin: 0;
  max-width: 100ch;
}

.copyright {
  margin-top: var(--space-3);
  color: color-mix(in srgb, var(--md-inverse-on-surface) 70%, transparent);
}

.site-footer strong {
  color: var(--md-surface-container-lowest);
}

.claim-icon {
  display: grid;
  place-items: center;
  flex: none;
  margin-top: 1px;
}

.claim p {
  margin: 0;
  max-width: 100ch;
}

.claim code {
  padding: 1px var(--space-1);
  border-radius: var(--shape-xs);
  background: color-mix(in srgb, currentColor 12%, transparent);
  font-family: var(--font-mono);
}

.sandbox-note {
  margin: var(--space-4) var(--space-4) 0;
  padding: var(--space-2) var(--space-3);
  border-left: 2px solid var(--sunrise-ochre);
  border-radius: 0 var(--shape-xs) var(--shape-xs) 0;
  background: var(--md-surface-container);
  color: var(--md-on-surface-variant);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  line-height: 1.55;
}

.sandbox-note[hidden] {
  display: none;
}






.pane {
  min-width: 0;
}

.card,
.form-section:not(:has(h3)) {
  margin-bottom: 0;
}

.form-section {
  padding: 0;
  margin-bottom: var(--space-5);
  border: 0;
  background: transparent;
}

.form-section h3,
.card h3 {
  margin: 0 0 var(--space-3);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--md-on-surface-variant);
  font-family: var(--font-sans);
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.card-head h3 {
  margin: 0;
}

.fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0 var(--space-4);
}

.field {
  margin-bottom: var(--space-4);
  min-width: 0;
}

.field-wide {
  grid-column: 1 / -1;
}

.field-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-1);
  font-family: var(--font-sans);
  font-size: 0.78125rem;
  font-weight: 600;
}

.req {
  color: var(--md-primary);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.field input,
.field textarea,
.field select,
.row input,
.row textarea,
.row select {
  width: 100%;
  min-height: 42px;
  padding: var(--space-3);
  border: 1px solid var(--md-outline);
  border-radius: var(--shape-sm);
  background: var(--md-surface-container-lowest);
  color: var(--md-on-surface);
  font-size: 0.78125rem;
  line-height: 1.45;
  transition: border-color var(--dur-short) var(--ease-standard), box-shadow var(--dur-short) var(--ease-standard);
}

.field textarea,
.row textarea {
  resize: vertical;
}

.field input:hover,
.field textarea:hover,
.field select:hover {
  border-color: var(--md-on-surface);
}

.field input:focus,
.field textarea:focus,
.field select:focus,
.row input:focus,
.row textarea:focus,
.row select:focus {
  outline: none;
  border-color: var(--md-primary);
  box-shadow: inset 0 0 0 1px var(--md-primary);
}

.field.invalid input,
.field.invalid textarea,
.field.invalid select,
.field.invalid .repeater {
  border-color: var(--md-error);
}

.field-help {
  margin: var(--space-1) 0 0;
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  line-height: 1.05rem;
  color: var(--md-on-surface-variant);
}

.repeater:not(:has(.row)) {
  padding: 0;
  border: 0;
  background: transparent;
}

.repeater {
  padding: var(--space-3);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--shape-md);
  background: var(--md-surface-container);
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  align-items: start;
}

.row-attachment {
  grid-template-columns: 1fr 1fr 130px 1fr auto;
}

.row-attachment .row-content {
  grid-column: 1 / -1;
}

.row-add,
.row-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 var(--space-4);
  border: 1px solid var(--md-outline);
  border-radius: var(--shape-sm);
  background: transparent;
  color: var(--md-on-surface-variant);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--dur-short) var(--ease-standard);
}

.row-add:hover,
.row-remove:hover {
  background: color-mix(in srgb, var(--md-on-surface) 8%, transparent);
}








.meter {
  margin-bottom: var(--space-5);
}

.meter-label {
  margin: var(--space-2) 0 0;
  font-family: var(--font-sans);
  font-size: 0.71875rem;
  color: var(--md-on-surface-variant);
}

pre {
  margin: 0;
  padding: var(--space-4);
  border-radius: var(--shape-md);
  background: var(--md-inverse-surface);
  color: var(--md-inverse-on-surface);
  font-size: 0.78125rem;
  line-height: 1.6;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.empty {
  margin: 0;
  color: var(--md-on-surface-variant);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
}

.noscript {
  margin: 0;
  padding: var(--space-4) var(--space-5);
  background: var(--md-error-container);
  color: var(--md-on-error-container);
}




.row-add.primary {
  border-color: transparent;
  background: var(--md-primary);
  color: var(--md-on-primary);
}

.row-add.primary:hover {
  background: color-mix(in srgb, var(--md-primary) 85%, var(--md-on-primary-container));
}













.backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  display: block;
  background: var(--backdrop-base);
}

body {
  background: transparent;
}










.preview-shell {
  resize: vertical;
  overflow: auto;
  height: clamp(120px, 28vh, 320px);
  min-height: 120px;
  padding: var(--space-4);
  background: #ffffff;
}

.preview-shell[hidden] {
  display: none;
}

.preview-frame {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: #ffffff;
}



.view-switch {
  display: inline-flex;
  margin-left: auto;
  padding: var(--space-1);
  border-radius: var(--shape-sm);
  background: var(--md-surface-container-high);
}

.view-switch[hidden] {
  display: none;
}

.view-switch button {
  min-height: 32px;
  padding: 0 var(--space-4);
  border: 0;
  border-radius: var(--shape-xs);
  background: transparent;
  color: var(--md-on-surface-variant);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
}




.switch-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 17px;
  padding: 1px var(--space-1) 0;
  border: 1px solid var(--md-outline);
  border-radius: var(--shape-xs);
  color: var(--md-on-surface-variant);
  font-size: 0.625rem;
  font-weight: 700;
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
}

.view-switch button.active .switch-count {
  border-color: transparent;
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
}

.switch-lamp {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: var(--shape-full);
  background: radial-gradient(
    circle at 50% 32%,
    color-mix(in srgb, var(--mark-bright) 35%, #ffffff) 0%,
    var(--mark-bright) 62%,
    color-mix(in srgb, var(--mark-bright) 82%, var(--mark-on-bright)) 100%
  );
  box-shadow:
    0 0 0 1px var(--mark-on-bright),
    0 0 3px color-mix(in srgb, var(--mark-bright) 90%, transparent),
    0 0 7px color-mix(in srgb, var(--mark-bright) 50%, transparent);
}

.view-switch button.active {
  border-color: transparent;
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
  box-shadow: none;
}

.view-switch button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}


.view-switch button.active {
  background: var(--md-surface-container-lowest);
  color: var(--md-on-surface);
  box-shadow: var(--elev-1);
}

.view-pane[hidden] {
  display: none;
}

.mail {
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--shape-md);
  background: var(--md-surface-container-lowest);
  overflow: hidden;
}

.mail[hidden] {
  display: none;
}

.mail-top {
  padding: var(--space-4);
  border-bottom: 1px solid var(--md-outline-variant);
}

.mail-identity {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.mail-avatar {
  display: grid;
  place-items: center;
  flex: none;
  width: 36px;
  height: 36px;
  border-radius: var(--shape-full);
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 700;
}

.mail-lines {
  min-width: 0;
}

.mail-sender {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 650;
  overflow-wrap: anywhere;
}

.mail-recipients {
  margin: 1px 0 0;
  font-family: var(--font-sans);
  font-size: 0.71875rem;
  color: var(--md-on-surface-variant);
  overflow-wrap: anywhere;
}

.mail-subject {
  margin: var(--space-3) 0 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  font-weight: 650;
  line-height: 1.35;
  text-wrap: balance;
  overflow-wrap: anywhere;
}

.mail-extras {
  margin: var(--space-2) 0 0;
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  color: var(--md-on-surface-variant);
}

.mail-extras[hidden] {
  display: none;
}

.mail-sender.muted,
.mail-recipients.muted,
.mail-subject.muted {
  color: var(--md-on-surface-variant);
  font-weight: 500;
  font-style: italic;
}

.mail-body .empty {
  padding: var(--space-4);
}

.mail-plain {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  margin: 0;
  padding: var(--space-4);
  border-radius: 0;
  background: var(--md-surface-container-lowest);
  color: var(--md-on-surface);
  font-size: 0.8125rem;
  line-height: 1.65;
}

.mail-plain[hidden] {
  display: none;
}

.group-panes .field-label {
  display: none;
}

.group-panes .field {
  margin-bottom: 0;
}

.group-panes .field[hidden] {
  display: none;
}

.group-switch {
  margin: 0 0 var(--space-2);
}

.group-panes {
  min-width: 0;
}

.name-row {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.name-row[hidden] {
  display: none;
}

.name-row .sender-name {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 34px;
  padding: var(--space-2) var(--space-3);
  font-size: 0.71875rem;
}

.input-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding-right: var(--space-2);
  border: 1px solid var(--md-outline);
  border-radius: var(--shape-sm);
  background: var(--md-surface-container-lowest);
}

.input-actions:focus-within {
  border-color: var(--md-primary);
}

.inline-actions {
  display: flex;
  flex: none;
  gap: var(--space-1);
}

.inline-action {
  min-height: 26px;
  padding: 0 var(--space-3);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--shape-sm);
  background: var(--md-surface-container);
  color: var(--md-on-surface-variant);
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--dur-short) var(--ease-standard);
}

.inline-action:hover {
  background: var(--md-surface-container-high);
  color: var(--md-on-surface);
}

.input-actions input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
}

.input-actions input:focus {
  box-shadow: none;
}

.sender-select[hidden] {
  display: none;
}

.sender-select {
  margin-top: var(--space-2);
  min-height: 34px;
  padding: var(--space-2) var(--space-3);
  font-size: 0.71875rem;
}

.field-help + .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: var(--space-1) var(--space-4);
}

.checklist-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-size: 0.78125rem;
  color: var(--md-on-surface-variant);
}

.checklist-mark {
  flex: none;
  width: var(--mark-size);
  height: var(--mark-size);
  border-radius: var(--shape-full);
  border: 1px solid var(--md-outline);
  align-self: center;
}

.checklist-item.done .checklist-mark {
  border-color: transparent;
  background: var(--mark-bright);
  box-shadow:
    0 0 0 1px var(--mark-on-bright),
    0 0 3px color-mix(in srgb, var(--mark-bright) 90%, transparent);
}

.checklist-item.done .checklist-label {
  color: var(--md-on-surface);
  font-weight: 600;
}


.toast:empty {
  display: none;
}

.toast {
  margin: var(--space-3) 0 0;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--shape-sm);
  background: var(--md-inverse-surface);
  color: var(--md-inverse-on-surface);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  text-align: center;
  opacity: 0;
  transition: opacity var(--dur-medium) var(--ease-standard);
}

.toast.showing {
  opacity: 1;
}

.toast.bad {
  background: var(--md-error);
}

.field-help + .snippet {
  margin-top: var(--space-3);
}

.snippet + .field-help {
  margin-top: var(--space-5);
}

.checklist {
  list-style: none;
  margin: 0 0 var(--space-3);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: var(--space-1) var(--space-4);
}

.checklist-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-size: 0.78125rem;
  color: var(--md-on-surface-variant);
}

.checklist-mark {
  flex: none;
  width: var(--mark-size);
  height: var(--mark-size);
  border-radius: var(--shape-full);
  border: 1px solid var(--md-outline);
  align-self: center;
}

.checklist-item.done .checklist-mark {
  border-color: transparent;
  background: var(--mark-bright);
  box-shadow:
    0 0 0 1px var(--mark-on-bright),
    0 0 3px color-mix(in srgb, var(--mark-bright) 90%, transparent);
}

.checklist-item.done .checklist-label {
  color: var(--md-on-surface);
  font-weight: 600;
}


.toast:empty {
  display: none;
}

.toast {
  margin: var(--space-3) 0 0;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--shape-sm);
  background: var(--md-inverse-surface);
  color: var(--md-inverse-on-surface);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  text-align: center;
  opacity: 0;
  transition: opacity var(--dur-medium) var(--ease-standard);
}

.toast.showing {
  opacity: 1;
}

.toast.bad {
  background: var(--md-error);
}

.snippet {
  margin: 0 0 var(--space-3);
  max-height: 26vh;
  overflow: auto;
  padding: var(--space-4);
  border-radius: var(--shape-md);
  background: var(--md-inverse-surface);
  color: var(--md-inverse-on-surface);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.6;
  white-space: pre;
}

.snippet-export {
  padding: var(--space-2) var(--space-3);
  font-size: 0.71875rem;
}

.send-actions {
  display: flex;
  justify-content: center;
  padding: var(--space-3) 0;
}

.send-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 var(--space-6);
  border: 0;
  border-radius: var(--shape-sm);
  background: var(--md-primary);
  color: var(--md-on-primary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 650;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: box-shadow var(--dur-short) var(--ease-standard);
}

.send-button:hover {
  box-shadow: var(--elev-2);
}






@media (max-width: 1100px) {
  .split {
    grid-template-columns: 1fr;
    padding: var(--space-4) var(--space-4) 0;
  }
  .pane-right {
    position: static;
    max-height: none;
    overflow: visible;
  }
  .pane {
    padding: var(--space-4);
  }
  .fields {
    grid-template-columns: 1fr;
  }
  .row-attachment {
    grid-template-columns: 1fr 1fr;
  }
  .top-app-bar {
    flex-wrap: wrap;
  }
}

@media (max-width: 620px) {
  .split {
    padding: var(--space-3) var(--space-3) 0;
    gap: var(--space-3);
  }
  .pane {
    padding: var(--space-3);
    border-radius: var(--shape-md);
  }
  .site-footer {
    width: calc(100% - var(--space-3) * 2);
    margin-top: var(--space-4);
  }
  .top-app-bar {
    padding: var(--space-2) var(--space-3);
  }
  .row-attachment {
    grid-template-columns: 1fr;
  }
  .input-actions {
    flex-wrap: wrap;
    padding: 0 0 var(--space-2);
  }
  .input-actions input {
    flex: 1 0 100%;
  }
  .inline-actions {
    padding-left: var(--space-2);
  }
}

@media (pointer: coarse), (max-width: 620px) {
  .field input,
  .field textarea,
  .field select,
  .row input,
  .row textarea,
  .row select {
    min-height: var(--touch-min);
    font-size: 1rem;
  }
  .input-actions input {
    min-height: var(--touch-min);
  }
  .send-button {
    min-height: var(--touch-min);
  }
  .row-add,
  .row-remove,
  .view-switch button,
  .top-app-bar .view-switch button,
  .inline-action,
  .sender-select,
  .name-row .sender-name {
    position: relative;
    min-height: var(--touch-visual);
  }
  .row-add::after,
  .row-remove::after,
  .view-switch button::after,
  .top-app-bar .view-switch button::after,
  .inline-action::after {
    content: '';
    position: absolute;
    inset: calc((var(--touch-min) - var(--touch-visual)) / -2) 0;
  }
  .inline-action,
  .view-switch button {
    padding-left: var(--space-3);
    padding-right: var(--space-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

@media (prefers-contrast: more) {
  .field input,
  .field textarea,
  .field select {
    border-width: 2px;
  }
  }