/*
 * Landing-page styles. All color and type come from the shared tokens in
 * theme.css — no hard-coded hex values here, so the site cannot drift from
 * the app's paper theme.
 */

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--paper-ink);
  background-color: var(--paper-bg);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1,
h2 {
  font-family: var(--font-serif);
  color: var(--paper-ink);
  line-height: 1.2;
}

a {
  color: var(--paper-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Centered single column; the header and footer span it too. */
.site-header,
main,
.site-footer {
  max-width: 56rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-top: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--paper-line);
}

.site-header nav a {
  margin-left: 1.25rem;
}

.site-header nav a[aria-current='page'] {
  color: var(--paper-ink);
  font-weight: 600;
}

.brand {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
}

.brand a {
  color: var(--paper-ink);
}

.brand a:hover {
  color: var(--paper-accent);
  text-decoration: none;
}

.hero {
  text-align: center;
  padding-top: 3rem;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 600;
  margin: 0 auto 1rem;
  max-width: 44rem;
}

.lede {
  font-size: 1.15rem;
  color: var(--paper-ink-2);
  max-width: 40rem;
  margin: 0 auto 2rem;
}

.cta {
  margin: 0 0 0.75rem;
}

.cta-button {
  display: inline-block;
  background-color: var(--paper-accent);
  color: var(--paper-bg);
  font-weight: 600;
  font-size: 1.1rem;
  padding: 0.75rem 1.75rem;
  border-radius: 6px;
}

.cta-button:hover {
  text-decoration: none;
  filter: brightness(1.15);
}

.cta-note {
  color: var(--paper-ink-3);
  font-size: 0.95rem;
  margin: 0;
}

.screenshot {
  margin: 3rem auto;
  text-align: center;
}

.screenshot img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--paper-line);
  border-radius: 8px;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 2rem;
  padding: 1rem 0 2rem;
}

.feature h2 {
  font-size: 1.3rem;
  margin: 0 0 0.5rem;
}

.feature p {
  margin: 0;
  color: var(--paper-ink-2);
}

.downloads {
  border-top: 1px solid var(--paper-line);
  padding: 2rem 0 1rem;
}

.downloads h2 {
  font-size: 1.5rem;
  margin: 0 0 0.5rem;
}

.downloads-note {
  color: var(--paper-ink-2);
  max-width: 44rem;
  margin: 0 0 1.5rem;
}

.download-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1rem;
}

.download-link {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.85rem 1.1rem;
  border: 1px solid var(--paper-line);
  border-radius: 8px;
  color: var(--paper-ink);
}

.download-link:hover {
  text-decoration: none;
  border-color: var(--paper-accent);
}

.download-platform {
  font-weight: 600;
  color: var(--paper-accent);
}

.download-meta {
  font-size: 0.9rem;
  color: var(--paper-ink-3);
}

.explainer {
  border-top: 1px solid var(--paper-line);
  padding: 2rem 0 1rem;
}

.explainer h2 {
  font-size: 1.5rem;
  margin: 0 0 0.5rem;
}

.explainer p {
  color: var(--paper-ink-2);
  max-width: 44rem;
  margin: 0;
}

/* Documentation pages (rules/, guide/): a readable single column of prose.
 * The Help menu in the desktop app deep-links to ids on these pages, so the
 * scroll-margin keeps anchored headings clear of the viewport edge. */
.doc {
  max-width: 44rem;
  padding-top: 2rem;
  padding-bottom: 2rem;
}

.doc h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  margin: 0 0 1rem;
}

.doc h2 {
  font-size: 1.4rem;
  margin: 2rem 0 0.5rem;
  scroll-margin-top: 1rem;
}

.doc p,
.doc li,
.doc dd {
  color: var(--paper-ink-2);
}

.doc .lede-left {
  font-size: 1.15rem;
}

.doc dt {
  font-weight: 600;
  margin-top: 0.75rem;
}

.doc dd {
  margin: 0.25rem 0 0 1.5rem;
}

.doc code {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.site-footer {
  border-top: 1px solid var(--paper-line);
  margin-top: 3rem;
  padding-top: 1rem;
  padding-bottom: 2rem;
  color: var(--paper-ink-3);
  font-size: 0.9rem;
}