:root {
  color-scheme: light;
  --app-bg: #d9d8d3;
  --chrome-bg: #ebe9e3;
  --paper: #fbfaf7;
  --text: #2b2a28;
  --muted: #7f8c8d;
  --faint: #aaa9a4;
  --keyword: #216975;
  --keyword-bg: rgba(1, 166, 182, 0.095);
  --heading: #315d75;
  --list-definition: #6b586f;
  --inline-code: #6b5242;
  --inline-code-bg: rgba(107, 82, 66, 0.075);
  --guide: rgba(55, 62, 64, 0.13);
  --current-line: rgba(127, 140, 141, 0.075);
  --selection-safe: #456f59;
  --danger: #a34a4a;
  --border: #c8c6bf;
  --focus: #347989;
  --editor-font: ui-monospace, "Cascadia Mono", "Segoe UI Mono", "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "DejaVu Sans Mono", monospace;
  --editor-size: 14px;
  --editor-leading: 1.65;
  --editor-padding-x: clamp(24px, 5vw, 72px);
  --editor-padding-y: 30px;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  min-width: 620px;
  min-height: 480px;
  overflow: hidden;
  color: var(--text);
  background: var(--app-bg);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

.app-shell {
  display: flex;
  flex-direction: column;
  width: min(1120px, calc(100% - 32px));
  height: calc(100% - 24px);
  margin: 12px auto;
  overflow: hidden;
  border: 1px solid #b9b7b0;
  border-radius: 5px;
  background: var(--paper);
  box-shadow: 0 8px 30px rgba(58, 56, 51, 0.13), 0 1px 2px rgba(58, 56, 51, 0.14);
}

.document-bar {
  z-index: 3;
  display: flex;
  min-height: 45px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 6px 9px 6px 13px;
  border-bottom: 1px solid var(--border);
  background: var(--chrome-bg);
}

.document-identity,
.toolbar-actions,
.toolbar-button,
.replacement-actions {
  display: flex;
  align-items: center;
}

.document-identity {
  min-width: 0;
  gap: 7px;
}

.document-icon {
  width: 18px;
  height: 18px;
  flex: none;
  fill: none;
  stroke: #68767c;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.filename-input {
  width: clamp(150px, 27vw, 330px);
  min-width: 0;
  height: 29px;
  padding: 3px 6px;
  border: 1px solid transparent;
  border-radius: 3px;
  outline: none;
  color: #253840;
  background: transparent;
  font-weight: 650;
}

.filename-input:hover {
  border-color: rgba(92, 103, 105, 0.22);
  background: rgba(255, 255, 255, 0.35);
}

.filename-input:focus {
  border-color: var(--focus);
  background: #fff;
  box-shadow: 0 0 0 2px rgba(52, 121, 137, 0.12);
}

.document-state {
  overflow: hidden;
  color: #66777c;
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.document-state::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin: 0 7px 1px 1px;
  border-radius: 50%;
  background: #849499;
}

.document-state[data-state="saving"]::before {
  background: #aa8240;
}

.document-state[data-state="downloaded"]::before {
  background: var(--selection-safe);
}

.document-state[data-state="error"] {
  color: #873b3b;
}

.document-state[data-state="error"]::before {
  background: var(--danger);
}

.toolbar-actions {
  flex: none;
  gap: 2px;
}

.toolbar-button {
  min-height: 31px;
  gap: 6px;
  padding: 4px 8px;
  border: 1px solid transparent;
  border-radius: 3px;
  background: transparent;
  cursor: pointer;
  font-size: 12px;
}

.toolbar-button:hover {
  border-color: #c5c3bc;
  background: rgba(255, 255, 255, 0.6);
}

.toolbar-button:active {
  background: rgba(90, 96, 96, 0.08);
}

.toolbar-button:focus-visible,
.replacement-button:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}

.toolbar-button-primary {
  color: #254f59;
}

.toolbar-button svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.replacement-bar {
  z-index: 2;
  display: flex;
  min-height: 39px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 5px 10px 5px 15px;
  border-bottom: 1px solid #d5c596;
  background: #f7f1df;
  color: #584e36;
  font-size: 12px;
}

.replacement-bar[hidden],
.notice[hidden],
.toolbar-button[hidden] {
  display: none;
}

.replacement-bar p {
  margin: 0;
}

.replacement-actions {
  flex: none;
  gap: 7px;
}

.replacement-button {
  min-height: 27px;
  padding: 3px 9px;
  border: 1px solid #c9c5b9;
  border-radius: 3px;
  background: #fffdf6;
  cursor: pointer;
  font-size: 12px;
}

.replacement-button-danger {
  border-bottom: 2px solid var(--danger);
  color: #823e3e;
}

.replacement-button-safe {
  border-bottom: 2px solid var(--selection-safe);
  color: #345d48;
}

.notice {
  z-index: 4;
  position: absolute;
  top: 64px;
  left: 50%;
  max-width: min(520px, calc(100% - 60px));
  transform: translateX(-50%);
  padding: 7px 12px;
  border: 1px solid #aeb7b8;
  border-radius: 4px;
  background: #f8faf9;
  box-shadow: 0 4px 14px rgba(42, 48, 48, 0.14);
  color: #405257;
  font-size: 12px;
}

.editor-frame {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  background: var(--paper);
}

.highlight-layer,
#editor {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: var(--editor-padding-y) var(--editor-padding-x);
  border: 0;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  word-break: normal;
  tab-size: var(--tab-size, 2);
  font-family: var(--editor-font);
  font-size: var(--editor-size);
  font-style: normal;
  font-variant: normal;
  font-weight: 400;
  line-height: var(--editor-leading);
  letter-spacing: 0;
  text-align: left;
  text-indent: 0;
  text-transform: none;
}

.highlight-layer {
  z-index: 0;
  overflow: scroll;
  color: var(--text);
  background: transparent;
  pointer-events: none;
  scrollbar-color: transparent transparent;
}

.highlight-layer::-webkit-scrollbar,
#editor::-webkit-scrollbar {
  width: 13px;
  height: 13px;
}

.highlight-layer::-webkit-scrollbar-thumb {
  background: transparent;
}

#editor {
  z-index: 1;
  resize: none;
  outline: none;
  overflow: auto;
  color: transparent;
  caret-color: #214e5c;
  background: transparent;
  -webkit-text-fill-color: transparent;
  scrollbar-color: #b6b8b5 transparent;
  scrollbar-width: auto;
}

#editor::selection {
  background: rgba(102, 146, 176, 0.32);
  color: transparent;
  -webkit-text-fill-color: transparent;
}

#editor::-webkit-scrollbar-thumb {
  border: 4px solid transparent;
  border-radius: 20px;
  background: #aaaead;
  background-clip: padding-box;
}

#editor::-webkit-scrollbar-thumb:hover {
  background: #858b8a;
  background-clip: padding-box;
}

.source-line {
  background: transparent;
}

.source-line.is-current {
  background: var(--current-line);
  box-shadow: 100vw 0 0 var(--current-line);
}

.source-line:empty::after {
  content: " ";
}

.indent-guides {
  --indent-step: 2ch;
  background-image: repeating-linear-gradient(
    to right,
    transparent 0,
    transparent calc(var(--indent-step) - 1px),
    var(--guide) calc(var(--indent-step) - 1px),
    var(--guide) var(--indent-step)
  );
}

.syntax-keyword {
  border-radius: 2px;
  color: var(--keyword);
  background: var(--keyword-bg);
  text-shadow: 0 0 0 currentColor;
}

.syntax-heading-marker,
.syntax-markdown-marker,
.syntax-list-marker,
.syntax-definition-colon {
  color: var(--muted);
}

.syntax-heading-text {
  color: var(--heading);
  text-decoration: underline;
  text-decoration-color: rgba(49, 93, 117, 0.2);
  text-underline-offset: 3px;
}

.syntax-bold {
  color: #383336;
  background: rgba(107, 88, 111, 0.075);
}

.syntax-code {
  color: var(--inline-code);
  background: var(--inline-code-bg);
}

.syntax-definition {
  color: var(--list-definition);
  text-decoration: underline;
  text-decoration-color: rgba(107, 88, 111, 0.22);
  text-underline-offset: 3px;
}

.drop-indicator {
  z-index: 3;
  position: absolute;
  inset: 18px;
  display: none;
  place-items: center;
  border: 2px dashed #55909b;
  border-radius: 6px;
  color: #28616d;
  background: rgba(246, 250, 249, 0.94);
  font-size: 14px;
  pointer-events: none;
}

.editor-frame.is-file-drag .drop-indicator {
  display: grid;
}

.status-bar {
  display: flex;
  min-height: 27px;
  align-items: center;
  gap: 11px;
  padding: 4px 13px;
  border-top: 1px solid var(--border);
  color: #667174;
  background: var(--chrome-bg);
  font-size: 11px;
  white-space: nowrap;
}

.status-divider {
  width: 1px;
  height: 12px;
  background: #c5c4be;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.noscript-message {
  position: fixed;
  inset: auto 20px 20px;
  margin: 0;
  padding: 12px;
  background: #fff;
  border: 1px solid var(--danger);
}

@media (max-width: 760px) {
  .app-shell {
    width: calc(100% - 12px);
    height: calc(100% - 12px);
    margin: 6px;
  }

  .document-state {
    display: none;
  }

  :root {
    --editor-padding-x: 24px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .notice {
    animation: notice-in 120ms ease-out;
  }

  @keyframes notice-in {
    from { opacity: 0; transform: translate(-50%, -3px); }
  }
}