:root {
  --paper: #fff;
  --canvas: #f1f5f8;
  --ink: #223c50;
  --muted: #596d7b;
  --navy: #174f76;
  --blue: #e2edf5;
  --line: #cedbe4;
  --error: #a42b38;
  font-family: 'Avenir Next', Avenir, 'Segoe UI', sans-serif;
  color: var(--ink);
  background: var(--canvas);
  font-size: 15px;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
button,
input,
select,
textarea {
  font: inherit;
}
button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--navy);
  color: #fff;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 10px 16px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  min-height: 40px;
}
button:hover,
.button:hover {
  filter: brightness(0.92);
}
button:disabled {
  opacity: 0.5;
  cursor: wait;
}
.quiet {
  background: transparent;
  color: var(--navy);
  border-color: var(--line);
}
.small {
  font-size: 0.85rem;
  padding: 6px 10px;
}
.danger {
  background: transparent;
  color: var(--error);
  border-color: #e7c5cb;
}
a {
  color: var(--navy);
}
:focus-visible {
  outline: 3px solid #e3a525;
  outline-offset: 3px;
}
[hidden] {
  display: none !important;
}
.masthead {
  height: 88px;
  padding: 0 36px;
  display: flex;
  align-items: center;
  gap: 28px;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.brand {
  font-size: 25px;
  font-weight: 750;
  letter-spacing: -1px;
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.stamp {
  font-family: Georgia, serif;
  font-size: 34px;
  font-style: italic;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 2px solid var(--navy);
  border-radius: 8px;
  line-height: 1;
  padding-bottom: 5px;
}
.tagline {
  color: var(--muted);
  font-size: 0.95rem;
}
#logout {
  margin-left: auto;
}
.welcome {
  max-width: 750px;
  margin: 9vh auto;
  padding: 32px;
  text-align: center;
}
.welcome h1 {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(36px, 5vw, 58px);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -1.5px;
  margin: 24px 0;
}
.welcome p {
  max-width: 470px;
  margin: 20px auto;
  line-height: 1.7;
  font-size: 17px;
}
.welcome .footnote {
  font-size: 13px;
  color: var(--muted);
  margin-top: 48px;
}
.postmark {
  display: grid;
  place-items: center;
  margin: auto;
  width: 72px;
  height: 72px;
  border: 1px solid #aec4d3;
  border-radius: 50%;
  font-family: Georgia, serif;
  font-size: 44px;
  color: var(--navy);
  background: #e4eff7;
}
.workspace {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: calc(100vh - 140px);
}
aside {
  padding: 26px 18px;
  border-right: 1px solid var(--line);
}
.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 28px;
}
h2 {
  font-size: 17px;
  letter-spacing: -0.3px;
  margin: 0;
}
.section-heading h2 {
  font-size: 15px;
}
#accounts {
  display: grid;
  gap: 6px;
}
#accounts button {
  display: block;
  width: 100%;
  text-align: left;
  background: transparent;
  color: var(--ink);
  padding: 13px 12px;
  overflow-wrap: anywhere;
  font-weight: 500;
}
#accounts button.selected {
  background: #dce9f3;
  color: var(--navy);
  box-shadow: inset 3px 0 var(--navy);
}
#accounts small {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
}
.aside-note {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.6;
  margin: 40px 12px;
}
.mailspace {
  background: var(--paper);
  min-width: 0;
}
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 28px 32px;
  min-height: 119px;
  border-bottom: 1px solid var(--line);
}
h1 {
  font-size: 25px;
  letter-spacing: -0.7px;
  margin: 0;
}
.muted {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}
.toolbar p {
  margin: 5px 0 0;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.mail-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--line);
}
.mail-controls label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}
.mail-controls select {
  width: 180px;
}
.mail-grid {
  display: grid;
  grid-template-columns: minmax(250px, 35%) minmax(0, 1fr);
  min-height: 480px;
}
.message-column {
  border-right: 1px solid var(--line);
}
.messages {
  max-height: 70vh;
  overflow: auto;
}
.messages .message {
  display: block;
  border-radius: 0;
  width: 100%;
  text-align: left;
  background: #fff;
  color: var(--ink);
  border: 0;
  border-bottom: 1px solid #e1e8ee;
  padding: 20px 24px;
  font-weight: 400;
}
.messages .message:hover {
  background: #edf4f9;
  filter: none;
}
.message strong,
.message small {
  display: block;
}
.message strong {
  margin: 6px 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.message small {
  font-size: 12px;
  color: var(--muted);
}
.reader {
  padding: 32px;
  overflow-wrap: anywhere;
  min-width: 0;
}
.reader h2 {
  font-size: 24px;
  line-height: 1.3;
  margin-bottom: 12px;
}
.reader pre {
  font-family: inherit;
  white-space: pre-wrap;
  font-size: 15px;
  line-height: 1.8;
  max-width: 75ch;
}
.reader .actions {
  margin: 24px 0;
}
.empty {
  padding: 60px 28px;
  color: var(--muted);
  max-width: 420px;
  margin: auto;
}
.empty h2 {
  color: var(--ink);
  font-family: Georgia, serif;
  font-weight: 400;
  font-size: 26px;
}
.empty p {
  line-height: 1.7;
  font-size: 14px;
}
.reader > .empty {
  margin-top: 35px;
}
footer {
  display: flex;
  justify-content: space-between;
  padding: 20px 36px;
  font-size: 12px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}
#notice {
  margin: 0;
  padding: 14px 36px;
  background: var(--blue);
  line-height: 1.6;
}
#notice.error {
  background: #fae9ed;
  color: var(--error);
}
dialog {
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 20px 100px #17384e33;
  max-width: 700px;
  width: calc(100% - 32px);
  padding: 28px;
  color: var(--ink);
  max-height: 90vh;
}
dialog::backdrop {
  background: #163b5366;
}
.dialog-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.dialog-heading h2 {
  font-size: 24px;
}
.dialog-heading button {
  font-size: 24px;
  padding: 0;
  width: 40px;
}
dialog p {
  line-height: 1.6;
}
label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin: 12px 0;
}
input,
select,
textarea {
  display: block;
  width: 100%;
  padding: 10px 11px;
  border: 1px solid #b6c8d5;
  background: #fff;
  border-radius: 5px;
  color: var(--ink);
  margin-top: 6px;
  min-height: 42px;
}
input[type='checkbox'] {
  width: 18px;
  min-height: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--navy);
}
.inline {
  display: flex;
  align-items: center;
  gap: 10px;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 18px;
}
fieldset {
  border: 1px solid var(--line);
  border-radius: 7px;
  margin: 20px 0;
  padding: 12px 18px;
}
legend {
  font-weight: 600;
  font-size: 14px;
  padding: 0 8px;
}
.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}
.form-error {
  color: var(--error);
  font-size: 14px;
}
.reader .attachment-note {
  padding: 14px;
  background: var(--canvas);
  border-radius: 6px;
  font-size: 13px;
}
#older {
  margin: 16px;
}
@media (max-width: 1100px) {
  .workspace {
    grid-template-columns: 220px minmax(0, 1fr);
  }
  .toolbar {
    align-items: flex-start;
    flex-direction: column;
  }
  .mail-grid {
    grid-template-columns: 1fr;
  }
  .message-column {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .messages {
    max-height: 300px;
  }
  .reader > .empty {
    margin-top: 0;
  }
  .reader {
    padding: 24px;
  }
}
@media (max-width: 650px) {
  .masthead {
    height: 72px;
    padding: 0 18px;
    gap: 12px;
  }
  .brand {
    font-size: 22px;
  }
  .tagline {
    display: none;
  }
  .workspace {
    grid-template-columns: 1fr;
  }
  aside {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 16px;
  }
  .section-heading {
    margin-bottom: 12px;
  }
  #accounts {
    display: flex;
    overflow: auto;
  }
  #accounts button {
    min-width: 160px;
  }
  .aside-note {
    display: none;
  }
  .toolbar {
    padding: 22px 18px;
  }
  .toolbar h1 {
    font-size: 22px;
  }
  .mail-controls {
    flex-wrap: wrap;
    padding: 14px 18px;
  }
  .mail-controls select {
    width: 140px;
  }
  .actions button {
    font-size: 13px;
    padding: 8px 10px;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  dialog {
    padding: 20px;
  }
  footer {
    padding: 16px 18px;
  }
  .welcome {
    margin: 3vh auto;
  }
  #notice {
    padding: 12px 18px;
  }
}

.language-picker {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  white-space: nowrap;
}
.language-picker select {
  width: auto;
  margin: 0;
}
#logout {
  margin-left: 0;
}
@media (max-width: 650px) {
  .language-picker > span {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }
  .language-picker select {
    padding: 8px;
  }
  .masthead {
    flex-wrap: wrap;
    height: auto;
    min-height: 72px;
    padding-top: 12px;
    padding-bottom: 12px;
  }
}