:root {
  color-scheme: light;
  --page: #f4f6f8;
  --surface: #ffffff;
  --surface-muted: #edf1f4;
  --text: #17201c;
  --text-muted: #58635e;
  --line: #cbd3cf;
  --accent: #35c27b;
  --accent-hover: #28ad6b;
  --accent-text: #0b2417;
  --danger: #b42318;
  --focus: #126a43;
  --radius: 6px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--page);
}

body {
  min-height: 100dvh;
  margin: 0;
  color: var(--text);
  background: var(--page);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  letter-spacing: 0;
}

button,
input {
  font: inherit;
  letter-spacing: 0;
}

a {
  color: inherit;
}

.shell {
  width: min(100%, 1040px);
  min-height: 100dvh;
  margin: 0 auto;
  padding: 0 32px;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.masthead {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.brand,
.source-link {
  text-decoration: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-height: 44px;
  font-weight: 720;
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.brand-mark img {
  display: block;
}

.source-link {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 650;
}

.source-link:hover {
  color: var(--text);
}

.workspace {
  width: 100%;
  margin: auto;
  padding: 64px 0;
}

.intro {
  margin-bottom: 34px;
}

.intro > p:last-child {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.6;
}

.account-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.saved-panel,
.reader-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.saved-panel {
  padding: 18px;
}

.saved-heading {
  min-height: 28px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.saved-heading h2 {
  margin: 0;
  font-size: 0.94rem;
  font-weight: 730;
}

.saved-heading span {
  min-width: 24px;
  color: var(--text-muted);
  font-size: 0.78rem;
  text-align: right;
}

#saved-accounts {
  width: 100%;
  height: 244px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  outline: none;
  overflow-y: auto;
  color: var(--text);
  background: var(--surface-muted);
  font-size: 0.82rem;
  line-height: 1.35;
}

#saved-accounts:focus-visible {
  border-color: var(--focus);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 22%, transparent);
}

.saved-option {
  min-height: 38px;
  padding: 9px 8px;
  border-radius: 3px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  overflow-wrap: anywhere;
  cursor: default;
  user-select: none;
}

.provider-badge {
  padding: 2px 5px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--text-muted);
  background: var(--surface);
  font-size: 0.65rem;
  font-weight: 750;
  line-height: 1.3;
}

.provider-badge.outlook {
  color: #075e96;
  border-color: #8dbdd9;
  background: #eaf6fc;
}

.saved-email {
  min-width: 0;
  overflow-wrap: anywhere;
}

.saved-option + .saved-option {
  margin-top: 2px;
}

.saved-option[aria-selected="true"] {
  color: var(--text);
  background: color-mix(in srgb, var(--focus) 18%, var(--surface-muted));
  font-weight: 680;
}

.saved-option[aria-disabled="true"] {
  color: var(--text-muted);
}

.saved-actions {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.secondary-action {
  min-width: 0;
  min-height: 40px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  color: var(--text);
  background: var(--surface-muted);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 680;
}

.secondary-action:hover:not(:disabled) {
  border-color: #929d97;
  background: var(--surface);
}

.secondary-action:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.danger-action:not(:disabled) {
  color: var(--danger);
}

.clear-action {
  grid-column: 1 / -1;
}

.secondary-action:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.secondary-action img {
  display: block;
}

.reader-form {
  padding: 28px;
}

.field + .field {
  margin-top: 22px;
}

.field label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.92rem;
  font-weight: 700;
}

.field input {
  width: 100%;
  min-height: 50px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  outline: none;
  color: var(--text);
  background: var(--surface-muted);
}

.field input::placeholder {
  color: #717d77;
  opacity: 1;
}

.field input:hover {
  border-color: #929d97;
}

.field input:focus-visible {
  border-color: var(--focus);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 22%, transparent);
}

.field input[aria-invalid="true"] {
  border-color: var(--danger);
}

.field-error,
.field-note,
.form-status {
  min-height: 20px;
  margin: 6px 0 0;
  font-size: 0.82rem;
  line-height: 1.45;
}

.field-error {
  color: var(--danger);
}

.field-note,
.form-status {
  color: var(--text-muted);
}

.preferences {
  margin: 20px 0 24px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.check-row {
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 620;
}

.check-row:hover {
  background: var(--surface-muted);
  color: var(--text);
}

.check-row input {
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--focus);
}

.check-row:has(input:focus-visible) {
  outline: 3px solid color-mix(in srgb, var(--focus) 25%, transparent);
  outline-offset: 1px;
}

.primary-action {
  width: 100%;
  min-height: 50px;
  padding: 12px 18px;
  border: 1px solid #238b59;
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--accent-text);
  background: var(--accent);
  cursor: pointer;
  font-weight: 760;
}

.primary-action:hover {
  background: var(--accent-hover);
}

.primary-action:disabled {
  cursor: wait;
  opacity: 0.65;
}

.primary-action:active {
  transform: translateY(1px);
}

.primary-action:focus-visible,
.secondary-action:focus-visible,
.source-link:focus-visible,
.brand:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.primary-action img {
  display: block;
}

.form-status {
  text-align: center;
}

.message-result {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.result-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.result-heading p,
.result-heading time {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.76rem;
}

.result-heading p {
  font-weight: 750;
}

.message-result h2 {
  margin: 9px 0 0;
  overflow-wrap: anywhere;
  font-size: 1.05rem;
  line-height: 1.4;
}

.message-sender,
.message-preview {
  overflow-wrap: anywhere;
  color: var(--text-muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

.message-sender {
  margin: 5px 0 0;
}

.message-preview {
  margin: 14px 0 0;
  white-space: pre-wrap;
}

.message-codes {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.message-codes:empty {
  display: none;
}

.message-codes code {
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--surface-muted);
  font-size: 1rem;
  font-weight: 760;
  letter-spacing: 0;
}

footer {
  padding: 22px 0 28px;
  border-top: 1px solid var(--line);
  color: var(--text-muted);
  font-size: 0.8rem;
  line-height: 1.55;
}

footer p {
  max-width: 70ch;
  margin: 0;
}

.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;
}

@media (max-width: 640px) {
  .shell {
    padding: 0 18px;
  }

  .masthead {
    min-height: 66px;
  }

  .brand {
    font-size: 0.92rem;
  }

  .brand-mark {
    width: 32px;
    height: 32px;
  }

  .brand-mark img {
    width: 21px;
    height: 21px;
  }

  .source-link {
    font-size: 0.82rem;
  }

  .workspace {
    padding: 40px 0;
  }

  .intro {
    margin-bottom: 26px;
  }

  .reader-form {
    padding: 20px;
  }

  .account-layout {
    grid-template-columns: 1fr;
  }

  .saved-panel {
    padding: 16px;
  }

  #saved-accounts {
    height: 142px;
  }

  .preferences {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #121715;
    --surface: #19201d;
    --surface-muted: #222b27;
    --text: #edf3ef;
    --text-muted: #aebbb4;
    --line: #3b4741;
    --accent: #55d994;
    --accent-hover: #6de3a5;
    --accent-text: #092116;
    --danger: #ff8d84;
    --focus: #67dda1;
  }

  .brand-mark img {
    filter: invert(1);
  }

  .secondary-action img {
    filter: invert(1);
  }

  .provider-badge.outlook {
    color: #a8dcff;
    border-color: #477a98;
    background: #17354a;
  }

  .field input::placeholder {
    color: #9ba7a0;
  }
}

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