:root {
  --paper: #eee9de;
  --paper-light: #f7f3e9;
  --ink: #1f211e;
  --muted: #6c6d66;
  --rule: #bbb5a8;
  --accent: #9d3527;
  --accent-dark: #71251c;
  --focus: #ffdc4a;
  --sans: Arial, Helvetica, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
  --mono: "Courier New", Courier, monospace;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--paper);
  font-size: 17px;
  line-height: 1.48;
}

button,
input,
textarea {
  color: inherit;
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
label:has(input:focus-visible) {
  outline: 4px solid var(--focus);
  outline-offset: 0;
}

button:disabled,
input:disabled,
textarea:disabled {
  cursor: not-allowed;
  opacity: 0.52;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  padding: 10px 14px;
  background: var(--focus);
  color: var(--ink);
  font: 700 13px var(--mono);
  clip-path: inset(100%);
}

.skip-link:focus {
  clip-path: none;
}

.masthead {
  min-height: 76px;
  display: grid;
  grid-template-columns: 290px 1fr auto;
  align-items: center;
  border-top: 5px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  background: var(--paper-light);
}

.wordmark {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 12px 22px;
  border-right: 1px solid var(--ink);
  color: inherit;
  text-decoration: none;
}

.wordmark-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 2px solid var(--ink);
  font: 700 22px/1 var(--serif);
}

.wordmark strong,
.wordmark small {
  display: block;
}

.wordmark strong {
  font: 600 21px/1 var(--serif);
  letter-spacing: 0.08em;
}

.wordmark small,
.edition,
.account-state,
.section-number,
.message-meta,
.source-status,
.source-list-heading,
.composer label,
.note-number,
.device-code > span {
  font: 700 11px/1.2 var(--mono);
  letter-spacing: 0.08em;
}

.edition {
  margin: 0;
  padding-left: 22px;
  color: var(--muted);
}

.account-actions {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 22px;
  border-left: 1px solid var(--ink);
}

.account-state {
  color: var(--accent);
}

.account-state.connected {
  color: #315b38;
}

.text-button,
.ledger button,
.drive-button,
.send-button,
.dialog-close-row button,
.primary-action,
.device-code button,
.source-list button,
.drive-search button,
.drive-location button,
.drive-folder-item button,
.load-more-button {
  border: 0;
  border-radius: 0;
  background: none;
  cursor: pointer;
}

.text-button {
  padding: 4px 0;
  border-bottom: 1px solid currentColor;
  font-weight: 700;
}

.desk {
  height: calc(100vh - 76px);
  min-height: 0;
  display: grid;
  grid-template-columns: 290px minmax(420px, 1fr) 330px;
}

.ledger,
.sources {
  background: rgba(247, 243, 233, 0.55);
}

.ledger {
  position: relative;
  height: 100%;
  min-height: 0;
  border-right: 1px solid var(--ink);
}

.ledger-heading {
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px 0 22px;
  border-bottom: 1px solid var(--rule);
  font: 700 11px var(--mono);
  letter-spacing: 0.08em;
}

.ledger-heading button {
  padding: 4px;
  color: var(--accent);
  font: 700 11px var(--mono);
}

.chat-index {
  margin: 0;
  padding: 0;
  list-style: none;
}

.chat-index button {
  width: 100%;
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 9px;
  padding: 18px 18px 18px 22px;
  border-bottom: 1px solid var(--rule);
  text-align: left;
}

.chat-index button.active {
  border-left: 5px solid var(--accent);
  padding-left: 17px;
  background: var(--paper-light);
}

.chat-index strong,
.chat-index small {
  display: block;
}

.chat-index strong {
  font: 600 15px var(--serif);
}

.chat-index small {
  margin-top: 3px;
  color: var(--muted);
  font: 12px var(--mono);
}

.index-number {
  color: var(--accent);
  font: 700 12px var(--mono);
}

.ledger-note {
  position: absolute;
  right: 22px;
  bottom: 26px;
  left: 22px;
  padding-top: 14px;
  border-top: 1px solid var(--ink);
}

.ledger-note p {
  margin: 8px 0 0;
  color: var(--muted);
  font: 13px/1.5 var(--serif);
}

.transcript {
  height: 100%;
  min-width: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.transcript-header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  padding: 34px clamp(28px, 5vw, 78px) 30px;
  border-bottom: 1px solid var(--ink);
}

.section-number {
  margin: 0 0 10px;
  color: var(--accent);
}

.transcript h1,
.sources h2,
.login-dialog h2 {
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: 0;
}

.transcript h1 {
  max-width: 600px;
  margin: 0;
  font-size: clamp(31px, 3.2vw, 48px);
  line-height: 1.08;
}

.transcript-header > div > p:last-child {
  max-width: 650px;
  margin: 14px 0 0;
  color: var(--muted);
  font: 17px/1.55 var(--serif);
}

.mode-stamp {
  min-width: 92px;
  align-self: start;
  padding: 8px 9px;
  border: 1px solid var(--ink);
  font-family: var(--mono);
}

.mode-stamp span,
.mode-stamp strong {
  display: block;
}

.mode-stamp span {
  font-size: 9px;
}

.mode-stamp strong {
  margin-top: 5px;
  color: var(--accent);
  font-size: 12px;
}

.messages {
  flex: 1 1 auto;
  width: min(100%, 860px);
  margin: 0 auto;
  padding: 12px clamp(28px, 5vw, 72px) 34px;
  overflow-y: auto;
}

.message {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 22px;
  padding: 30px 0;
  border-bottom: 1px solid var(--rule);
}

.message-meta {
  padding-top: 5px;
  color: var(--muted);
}

.message-meta span,
.message-meta time {
  display: block;
}

.message-meta span {
  color: var(--accent);
}

.message-meta time {
  margin-top: 7px;
  font-weight: 400;
  letter-spacing: 0;
}

.message > p,
.message-copy {
  margin: 0;
  font: 18px/1.62 var(--serif);
  overflow-wrap: anywhere;
}

.message > p,
.message-copy.dynamic-copy {
  white-space: pre-wrap;
}

.message-copy p {
  margin: 0 0 14px;
}

.message-copy ol,
.message-copy ul {
  margin: 0 0 18px;
  padding-left: 26px;
}

.message-copy li {
  padding-left: 4px;
  margin-bottom: 9px;
}

.message-copy .citation,
.citation {
  margin-top: 20px;
  padding-top: 10px;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font: 12px/1.5 var(--mono);
}

.message.pending .message-copy::after {
  content: "";
  display: inline-block;
  width: 7px;
  height: 14px;
  margin-left: 3px;
  background: var(--accent);
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.composer {
  flex: 0 0 auto;
  width: min(calc(100% - 56px), 820px);
  margin: auto auto 26px;
  padding: 14px 16px 12px;
  border: 1px solid var(--ink);
  background: var(--paper-light);
}

.composer label {
  display: block;
  margin-bottom: 6px;
  color: var(--accent);
}

.composer textarea {
  width: 100%;
  min-height: 72px;
  max-height: 230px;
  resize: none;
  padding: 4px 0;
  border: 0;
  outline: 0;
  background: transparent;
  font: 18px/1.45 var(--serif);
}

.composer textarea::placeholder {
  color: #8d897f;
}

.composer-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 10px;
  border-top: 1px solid var(--rule);
}

.composer-footer > span {
  color: var(--muted);
  font: 11px var(--mono);
}

.send-button {
  display: flex;
  align-items: center;
  gap: 18px;
  min-width: 108px;
  justify-content: space-between;
  padding: 8px 10px;
  background: var(--ink);
  color: var(--paper-light);
  font: 700 13px var(--mono);
}

.attached-sources {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: -2px 0 10px;
}

.attached-sources span {
  padding: 3px 6px;
  border: 1px solid var(--rule);
  color: var(--muted);
  font: 10px var(--mono);
}

.sources {
  height: 100%;
  min-width: 0;
  padding: 28px 22px;
  border-left: 1px solid var(--ink);
  overflow-y: auto;
}

.sources-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--ink);
}

.sources h2 {
  margin: 0;
  font-size: 25px;
}

.source-status {
  align-self: start;
  padding: 5px 6px;
  border: 1px solid var(--accent);
  color: var(--accent);
}

.source-status.connected {
  border-color: #315b38;
  color: #315b38;
}

.drive-row {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 11px;
  padding: 20px 0;
  border-bottom: 1px solid var(--rule);
}

.drive-letter {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 1px solid var(--ink);
  color: var(--accent);
  font: 700 16px var(--serif);
}

.drive-row strong {
  font: 600 15px var(--serif);
}

.drive-row p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.drive-button {
  width: 100%;
  margin: 14px 0 7px;
  padding: 9px 10px;
  border: 1px solid var(--ink);
  font: 700 12px var(--mono);
}

.drive-button:disabled {
  color: var(--muted);
}

.source-list-heading {
  display: flex;
  justify-content: space-between;
  margin-top: 24px;
  color: var(--muted);
}

.source-list {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.source-list li {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  gap: 9px;
  align-items: start;
  padding: 12px 0;
  border-bottom: 1px solid var(--rule);
}

.source-list li.sample-source {
  grid-template-columns: 36px 1fr;
}

.source-list strong,
.source-list small {
  display: block;
}

.source-list strong {
  font: 600 13px/1.35 var(--serif);
}

.source-list small,
.file-type {
  color: var(--muted);
  font: 9px/1.4 var(--mono);
}

.file-type {
  padding-top: 2px;
  color: var(--accent);
}

.source-list button {
  padding: 2px;
  color: var(--accent);
  font: 8px var(--mono);
}

.source-footnote {
  margin: 24px 0 0;
  color: var(--muted);
  font: 11px/1.5 var(--serif);
}

.login-dialog {
  width: min(520px, calc(100% - 32px));
  max-height: calc(100vh - 32px);
  padding: 28px 32px 34px;
  border: 2px solid var(--ink);
  border-radius: 0;
  background: var(--paper-light);
  color: var(--ink);
  overflow-y: auto;
}

.login-dialog::backdrop {
  background: rgba(31, 33, 30, 0.72);
}

.dialog-close-row {
  display: flex;
  justify-content: flex-end;
}

.dialog-close-row button {
  padding: 3px 0;
  border-bottom: 1px solid currentColor;
  font: 700 10px var(--mono);
}

.login-dialog h2 {
  margin: 8px 0 12px;
  font-size: 34px;
  line-height: 1.12;
}

.login-dialog > p:not(.section-number):not(.dialog-error),
.login-start p,
.device-code p {
  color: var(--muted);
  font: 15px/1.55 var(--serif);
}

.primary-action {
  display: block;
  width: 100%;
  padding: 12px 14px;
  background: var(--ink);
  color: var(--paper-light);
  text-align: center;
  text-decoration: none;
  font: 700 13px var(--mono);
}

.login-start {
  margin-top: 24px;
}

.login-start p {
  margin: 11px 0 0;
  font-size: 12px;
}

.device-code {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--ink);
}

.device-code > span {
  color: var(--accent);
}

.device-code > button {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 8px 0 16px;
  padding: 16px;
  border: 1px solid var(--ink);
  background: var(--paper);
}

.device-code strong {
  font: 700 clamp(26px, 7vw, 38px) var(--mono);
  letter-spacing: 0.06em;
}

.device-code small {
  font: 700 10px var(--mono);
}

.waiting {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 14px 0 0;
  text-align: center;
}

.waiting span {
  width: 8px;
  height: 8px;
  background: var(--accent);
  animation: blink 1s steps(1) infinite;
}

.dialog-error {
  margin: 16px 0 0;
  padding: 10px;
  border: 1px solid var(--accent);
  color: var(--accent);
  font: 12px/1.45 var(--mono);
}

.drive-search > label {
  display: block;
  margin: 18px 0 7px;
  color: var(--accent);
  font: 700 10px var(--mono);
  letter-spacing: 0.08em;
}

.drive-search input {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: var(--paper);
  font: 13px/1.35 var(--mono);
}

.drive-search button {
  padding: 0 13px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper-light);
  font: 700 10px var(--mono);
}

.drive-browser-dialog {
  width: min(760px, calc(100% - 32px));
}

.drive-search {
  margin-top: 20px;
}

.drive-search > div {
  display: grid;
  grid-template-columns: 1fr auto;
}

.drive-search input {
  min-width: 0;
  border-right: 0;
}

.drive-location {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  margin-top: 18px;
  padding: 10px 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  font: 700 10px/1.35 var(--mono);
}

.drive-location span {
  overflow: hidden;
  color: var(--muted);
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.drive-location button,
.load-more-button {
  padding: 3px 0;
  border-bottom: 1px solid currentColor;
  color: var(--accent);
  font: 700 9px var(--mono);
}

.drive-browser-status {
  margin: 14px 0;
  color: var(--muted);
  font: 11px var(--mono);
}

.drive-browser-status.error {
  color: var(--accent);
}

.drive-browser-list {
  max-height: min(330px, 42vh);
  margin: 0;
  padding: 0;
  overflow-y: auto;
  border-bottom: 1px solid var(--ink);
  list-style: none;
}

.drive-browser-list li {
  min-height: 57px;
  border-top: 1px solid var(--rule);
}

.drive-browser-list li:first-child {
  border-top: 0;
}

.drive-folder-item button,
.drive-file-item label {
  width: 100%;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  padding: 11px 8px;
  text-align: left;
}

.drive-folder-item button:hover,
.drive-file-item label:hover {
  background: var(--paper);
}

.drive-file-item {
  position: relative;
  padding-left: 34px;
}

.drive-file-item input {
  position: absolute;
  top: 19px;
  left: 7px;
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--accent);
}

.drive-folder-item strong,
.drive-folder-item small,
.drive-file-item strong,
.drive-file-item small {
  display: block;
}

.drive-folder-item strong,
.drive-file-item strong {
  overflow: hidden;
  font: 600 14px/1.35 var(--serif);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.drive-folder-item small,
.drive-file-item small {
  margin-top: 2px;
  color: var(--muted);
  font: 9px var(--mono);
}

.drive-browser-empty {
  padding: 22px 8px;
  color: var(--muted);
  font: 13px/1.5 var(--serif);
}

.load-more-button {
  margin-top: 12px;
}

.drive-browser-footer {
  display: grid;
  grid-template-columns: 1fr minmax(190px, 260px);
  gap: 18px;
  align-items: center;
  margin-top: 18px;
}

.drive-browser-footer > span {
  color: var(--muted);
  font: 700 10px var(--mono);
}

@media (max-width: 1120px) {
  .desk {
    grid-template-columns: 220px minmax(420px, 1fr) 290px;
  }

  .masthead {
    grid-template-columns: 220px 1fr auto;
  }

  .wordmark {
    padding-left: 16px;
  }

  .ledger-note {
    right: 16px;
    left: 16px;
  }
}

@media (max-width: 900px) {
  .masthead {
    grid-template-columns: 1fr auto;
  }

  .edition,
  .account-state,
  .ledger {
    display: none;
  }

  .wordmark {
    border-right: 0;
  }

  .desk {
    grid-template-columns: minmax(0, 1fr) 280px;
  }
}

@media (max-width: 720px) {
  body {
    font-size: 16px;
  }

  .masthead {
    min-height: 68px;
  }

  .wordmark {
    padding: 10px 12px;
  }

  .wordmark small {
    display: none;
  }

  .account-actions {
    padding: 0 12px;
  }

  .text-button {
    font-size: 13px;
  }

  .desk {
    display: block;
    height: auto;
  }

  .transcript,
  .sources {
    height: auto;
    overflow: visible;
  }

  .transcript-header {
    gap: 14px;
    padding: 25px 18px 22px;
  }

  .transcript h1 {
    font-size: 31px;
  }

  .mode-stamp {
    min-width: 74px;
  }

  .messages {
    overflow: visible;
    padding: 8px 18px 24px;
  }

  .message {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 22px 0;
  }

  .message-meta {
    display: flex;
    gap: 10px;
  }

  .message-meta time {
    margin-top: 0;
  }

  .composer {
    width: calc(100% - 24px);
    margin-bottom: 12px;
  }

  .sources {
    padding: 26px 18px 38px;
    border-top: 1px solid var(--ink);
    border-left: 0;
  }

  .login-dialog {
    padding: 22px 20px 26px;
  }

  .login-dialog h2 {
    font-size: 29px;
  }

  .drive-browser-footer {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}