@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/inter-regular.woff2") format("woff2");
}

@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("assets/fonts/inter-semibold.woff2") format("woff2");
}

/* Italic face used by <em> in the live preview. */
@font-face {
  font-family: "Inter";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/inter-italic.woff2") format("woff2");
}

:root {
  color-scheme: light dark;
  --color-page: oklch(0.985 0.003 255);
  --color-surface: oklch(1 0 0);
  --color-text: oklch(0.22 0.018 255);
  --color-muted: oklch(0.51 0.018 255);
  --color-border: rgb(18 24 31 / 0.12);
  --color-focus: oklch(0.58 0.16 250);
  --shadow-window: 0 1px 2px rgb(18 24 31 / 0.08), 0 10px 30px rgb(18 24 31 / 0.09);
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4.5rem;
  --radius-control: 0.625rem;
  --radius-window: 1rem;
  --page-width: 90rem;
  --text-body: 1rem;
  --text-display: clamp(2rem, 3.2vw, 3.25rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-page: oklch(0.17 0.012 255);
    --color-surface: oklch(0.23 0.014 255);
    --color-text: oklch(0.93 0.006 255);
    --color-muted: oklch(0.68 0.012 255);
    --color-border: rgb(226 232 238 / 0.16);
    --color-focus: oklch(0.72 0.14 250);
    --shadow-window: 0 1px 2px rgb(0 0 0 / 0.4), 0 10px 30px rgb(0 0 0 / 0.45);
  }
}

* {
  box-sizing: border-box;
}

html {
  min-block-size: 100%;
  background: var(--color-page);
  color: var(--color-text);
  font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-block-size: 100dvh;
  margin: 0;
}

button,
a {
  touch-action: manipulation;
}

.page {
  display: flex;
  min-block-size: 100dvh;
  max-inline-size: var(--page-width);
  margin-inline: auto;
  padding: clamp(var(--space-5), 6vw, var(--space-7));
  flex-direction: column;
  gap: var(--space-6);
}

.hero {
  display: grid;
  flex: 1;
  grid-template-columns: minmax(17rem, 0.72fr) minmax(30rem, 1.28fr);
  align-items: center;
  gap: clamp(var(--space-5), 5vw, var(--space-6));
}

.intro {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-5);
}

.app-icon {
  inline-size: 5.5rem;
  block-size: 5.5rem;
  filter: drop-shadow(0 6px 16px rgb(18 24 31 / 0.18));
}

h1 {
  max-inline-size: 19ch;
  margin: 0;
  font-size: var(--text-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.download {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
}

.download-button {
  display: inline-flex;
  min-block-size: 3.5rem;
  padding-inline: var(--space-5);
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-text);
  border-radius: var(--radius-control);
  background: var(--color-text);
  color: var(--color-surface);
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

.download-button:active {
  transform: translateY(1px);
}

.download-button:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

.download-note {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-body);
  line-height: 1.5;
}

.showcase {
  min-inline-size: 0;
}

.footer {
  color: var(--color-muted);
  font-size: var(--text-body);
  line-height: 1.5;
  text-align: center;
}

@media (hover: hover) and (pointer: fine) {
  .download-button:hover {
    background: color-mix(in oklch, var(--color-text) 86%, white);
  }
}

@media (max-width: 58rem) {
  .page {
    gap: var(--space-5);
  }

  .hero {
    grid-template-columns: 1fr;
    align-content: center;
    gap: var(--space-6);
  }

  h1 {
    max-inline-size: 23ch;
  }
}

@media (max-width: 34rem) {
  .page {
    padding-inline: var(--space-4);
    padding-block: var(--space-5);
  }

  .hero {
    gap: var(--space-5);
  }

  .intro {
    gap: var(--space-4);
  }

  .download-button {
    inline-size: 100%;
  }

  .download {
    inline-size: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .download-button:active {
    transform: none;
  }
}

/* Interactive demo */

.visually-hidden {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.demo-backdrop {
  padding: clamp(1rem, 2.5vw, 2rem);
  border-radius: calc(var(--radius-window) + 1rem);
  background: linear-gradient(135deg, #8f6ad8 0%, #e05f96 48%, #f5a45c 100%);
}

.demo-window {
  /* App chrome and editor colors, mirroring the Mac app's default light theme. */
  --demo-chrome: oklch(0.965 0.003 255);
  --demo-chrome-border: rgb(18 24 31 / 0.1);
  --demo-editor-bg: oklch(1 0 0);
  --demo-editor-text: #24292f;
  --demo-editor-muted: rgb(60 60 67 / 0.6);
  --demo-editor-rule: rgb(18 24 31 / 0.18);
  --demo-link: #0366d6;

  display: flex;
  flex-direction: column;
  aspect-ratio: 1.6;
  min-block-size: 20rem;
  overflow: hidden;
  border: 1px solid var(--demo-chrome-border);
  border-radius: var(--radius-window);
  background: var(--demo-editor-bg);
  box-shadow: var(--shadow-window);
}

.demo-titlebar {
  display: flex;
  flex: none;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  padding: 0.55rem 0.9rem;
  background: var(--demo-chrome);
  border-bottom: 1px solid var(--demo-chrome-border);
}

.demo-lights {
  display: inline-flex;
  gap: 0.5rem;
}

.demo-light {
  inline-size: 0.75rem;
  block-size: 0.75rem;
  border-radius: 50%;
}

.demo-light.is-close { background: #ff5f57; }
.demo-light.is-min { background: #febc2e; }
.demo-light.is-zoom { background: #28c840; }

.demo-title {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-inline-start: 0.35rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--demo-editor-text);
}

.demo-doc-icon {
  inline-size: 0.9rem;
  block-size: 0.9rem;
  fill: none;
  stroke: var(--demo-editor-muted);
  stroke-width: 1.2;
  stroke-linejoin: round;
}

.demo-toolbar {
  display: flex;
  flex: none;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.125rem;
  padding: 0.25rem 0.5rem;
  background: var(--demo-chrome);
  border-bottom: 1px solid var(--demo-chrome-border);
}

.demo-toolbar-divider {
  inline-size: 1px;
  block-size: 1.25rem;
  margin-inline: 0.25rem;
  background: var(--demo-chrome-border);
}

.demo-tool {
  display: inline-flex;
  min-inline-size: 1.75rem;
  block-size: 1.5rem;
  padding-inline: 0.3rem;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 0.375rem;
  background: transparent;
  color: color-mix(in oklch, var(--demo-editor-text) 78%, var(--demo-chrome));
  cursor: pointer;
}

.demo-tool:hover {
  background: color-mix(in oklch, var(--demo-editor-text) 8%, transparent);
}

.demo-tool:active {
  background: color-mix(in oklch, var(--demo-editor-text) 16%, transparent);
}

.demo-glyph {
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1;
}

.demo-glyph.is-bold { font-weight: 700; }
.demo-glyph.is-italic { font-style: italic; }
.demo-glyph.is-strike { text-decoration: line-through; }

.demo-glyph.is-mono {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.8125rem;
  font-weight: 500;
}

.demo-glyph.is-quote {
  font-family: Georgia, serif;
  font-size: 1.4rem;
  line-height: 0;
  /* Hanging quote ink sits high; center it optically with the neighbors. */
  transform: translateY(0.2em);
}

.demo-icon {
  inline-size: 1rem;
  block-size: 1rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.demo-chevron {
  inline-size: 0.5rem;
  block-size: 0.5rem;
  margin-inline-start: 0.15rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.demo-heading {
  position: relative;
}

.demo-menu {
  position: absolute;
  z-index: 2;
  top: calc(100% + 0.3rem);
  left: 0;
  min-inline-size: 8.5rem;
  padding: 0.25rem;
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  background: var(--color-surface);
  box-shadow: var(--shadow-window);
}

.demo-menu button {
  display: block;
  inline-size: 100%;
  padding: 0.3rem 0.5rem;
  border: 0;
  border-radius: 0.35rem;
  background: none;
  color: var(--color-text);
  cursor: pointer;
  font: inherit;
  font-size: 0.8125rem;
  text-align: start;
  white-space: nowrap;
}

.demo-menu button:hover {
  background: color-mix(in oklch, var(--color-text) 10%, transparent);
}

.demo-viewmode {
  display: inline-flex;
  margin-inline-start: auto;
  padding: 2px;
  border-radius: 0.4rem;
  background: color-mix(in oklch, var(--demo-editor-text) 8%, transparent);
}

.demo-viewmode button {
  padding: 0.2rem 0.6rem;
  border: 0;
  border-radius: 0.3rem;
  background: transparent;
  color: var(--demo-editor-text);
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.2;
}

.demo-viewmode button[aria-pressed="true"] {
  background: var(--color-surface);
  box-shadow: 0 1px 2px rgb(18 24 31 / 0.2);
}

.demo-panes {
  display: grid;
  flex: 1;
  min-block-size: 0;
  grid-template-columns: minmax(0, 1fr) 1px minmax(0, 1fr);
}

.demo-editor-pane {
  position: relative;
  min-block-size: 0;
  background: var(--demo-editor-bg);
}

.demo-pane-divider {
  position: relative;
  background: var(--demo-chrome-border);
  cursor: col-resize;
  touch-action: none;
}

/* Invisible hit area around the 1px line, like the app's split divider. */
.demo-pane-divider::after {
  position: absolute;
  inset-block: 0;
  inset-inline: -3px;
  content: "";
}

.demo-pane-divider:hover,
.demo-pane-divider.is-dragging {
  background: color-mix(in oklch, var(--demo-editor-text) 35%, var(--demo-chrome-border));
}

.demo-preview-pane {
  min-block-size: 0;
  overflow-y: auto;
  background: var(--demo-editor-bg);
}

.demo-editor,
.demo-highlight {
  margin: 0;
  border: 0;
  padding: 1rem;
  font: 400 13px/1.55 ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  letter-spacing: 0;
  tab-size: 4;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  word-break: normal;
}

.demo-highlight {
  position: absolute;
  inset: 0;
  overflow: hidden;
  color: var(--demo-editor-text);
}

.demo-highlight code {
  font: inherit;
  white-space: pre-wrap;
}

.demo-editor {
  position: absolute;
  inset: 0;
  inline-size: 100%;
  block-size: 100%;
  overflow: auto;
  resize: none;
  outline: none;
  background: transparent;
  color: transparent;
  caret-color: var(--demo-editor-text);
}

/* Editor syntax tokens, matching the app's SyntaxHighlighter. */

.tok-marker {
  color: var(--demo-link);
}

.tok-quote {
  color: var(--demo-editor-muted);
}

.tok-strike {
  color: var(--demo-editor-muted);
  text-decoration: line-through;
}

.tok-rule {
  color: var(--demo-editor-rule);
}

.tok-link {
  color: var(--demo-link);
}

.tok-link-label {
  text-decoration: underline;
}

.demo-preview {
  /* Mirrors the app's Default Light / Default Dark preview themes. */
  --md-text: #24292e;
  --md-muted: #6a737d;
  --md-link: #0366d6;
  --md-border: #eaecef;
  --md-code-bg: #f6f8fa;
  --md-quote-border: #dfe2e5;

  max-inline-size: 46rem;
  margin-inline: auto;
  padding: 1.5rem 2rem;
  font-size: 15px;
  line-height: 1.6;
  color: var(--md-text);
}

.demo-preview h1,
.demo-preview h2,
.demo-preview h3,
.demo-preview h4,
.demo-preview h5,
.demo-preview h6 {
  margin-block: 1.5rem 1rem;
  font-weight: 600;
  line-height: 1.25;
}

.demo-preview h1,
.demo-preview h2 {
  padding-bottom: 0.3em;
  border-bottom: 1px solid var(--md-border);
}

.demo-preview h1 { font-size: 2em; }
.demo-preview h2 { font-size: 1.5em; }
.demo-preview h3 { font-size: 1.25em; }

.demo-preview p {
  margin-block: 0 1rem;
}

.demo-preview ul,
.demo-preview ol {
  margin-block: 0 1rem;
  padding-inline-start: 2em;
}

.demo-preview li {
  margin-block: 0 4px;
}

.demo-preview a {
  color: var(--md-link);
  text-decoration: underline;
}

.demo-preview code {
  padding: 0.2em 0.4em;
  border-radius: 4px;
  background: var(--md-code-bg);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.9em;
}

.demo-preview pre {
  margin-block: 0 1rem;
  padding: 1rem;
  border-radius: 6px;
  background: var(--md-code-bg);
  overflow-x: auto;
  line-height: 1.45;
}

.demo-preview pre code {
  padding: 0;
  background: none;
  font-size: 0.9em;
}

.demo-preview blockquote {
  margin-block: 0 1rem;
  padding-inline: 1rem;
  border-left: 4px solid var(--md-quote-border);
  color: var(--md-muted);
}

.demo-preview blockquote > :first-child { margin-block-start: 0; }
.demo-preview blockquote > :last-child { margin-block-end: 0; }

.demo-preview table {
  inline-size: 100%;
  margin-block: 0 1rem;
  border-collapse: collapse;
}

.demo-preview th,
.demo-preview td {
  padding: 8px 12px;
  border: 1px solid var(--md-quote-border);
  text-align: start;
}

.demo-preview th {
  background: var(--md-code-bg);
  font-weight: 600;
}

.demo-preview tr:nth-child(even) {
  background: var(--md-code-bg);
}

.demo-preview hr {
  margin-block: 1.5rem;
  border: none;
  border-top: 1px solid var(--md-border);
}

.demo-preview .task-list {
  padding-inline-start: 1.5em;
}

/* Hide the marker on task items only, so sibling bullet/numbered
   items in a merged list keep theirs. */
.demo-preview li.task-list-item {
  list-style: none;
}

.demo-preview .task-list-item input[type="checkbox"] {
  margin-inline-end: 0.5em;
}

.demo-preview del {
  text-decoration: line-through;
  color: var(--md-muted);
}

.demo-preview img {
  max-inline-size: 100%;
  block-size: auto;
  border-radius: 4px;
}

.demo-statusbar {
  display: flex;
  flex: none;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0.75rem;
  padding: 0.2rem 0.75rem;
  background: var(--demo-chrome);
  border-top: 1px solid var(--demo-chrome-border);
  color: color-mix(in oklch, var(--demo-editor-text) 55%, var(--demo-chrome));
  font: 400 11px/1.6 ui-monospace, "SF Mono", Menlo, monospace;
}

.demo-statusbar span {
  white-space: nowrap;
}

.demo-status-divider {
  inline-size: 1px;
  block-size: 0.75rem;
  background: var(--demo-chrome-border);
}

.demo-status-spacer {
  flex: 1;
}

.demo-tool:focus-visible,
.demo-viewmode button:focus-visible,
.demo-menu button:focus-visible,
.demo-pane-divider:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.demo-window[data-view="editor"] .demo-preview-pane,
.demo-window[data-view="editor"] .demo-pane-divider,
.demo-window[data-view="preview"] .demo-editor-pane,
.demo-window[data-view="preview"] .demo-pane-divider {
  display: none;
}

.demo-window[data-view="editor"] .demo-panes,
.demo-window[data-view="preview"] .demo-panes {
  grid-template-columns: minmax(0, 1fr);
}

@media (max-width: 34rem) {
  .demo-window {
    aspect-ratio: auto;
    block-size: 26rem;
  }

  .demo-window[data-view="split"] .demo-panes {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr) 1px minmax(0, 1fr);
  }

  .demo-window[data-view="split"] .demo-pane-divider {
    inline-size: auto;
    block-size: 1px;
  }
}

@media (prefers-color-scheme: dark) {
  .demo-backdrop {
    background: linear-gradient(135deg, #5d4a91 0%, #99476c 48%, #a3703a 100%);
  }

  .demo-window {
    --demo-chrome: oklch(0.28 0.005 255);
    --demo-chrome-border: rgb(0 0 0 / 0.4);
    --demo-editor-bg: oklch(0.23 0.014 255);
    --demo-editor-text: #d4d4d4;
    --demo-editor-muted: rgb(235 235 245 / 0.6);
    --demo-editor-rule: rgb(226 232 238 / 0.25);
    --demo-link: #58a6ff;
  }

  .demo-viewmode button[aria-pressed="true"] {
    box-shadow: 0 1px 2px rgb(0 0 0 / 0.4);
  }

  .demo-preview {
    --md-text: #d4d4d4;
    --md-muted: #8b949e;
    --md-link: #58a6ff;
    --md-border: #3d444d;
    --md-code-bg: #2d2d2d;
    --md-quote-border: #3d444d;
  }
}