/* synod.css — the quiet-desk identity, taken from the application's own
   window (synod/ui/index.html): warm paper by day, deep ink by night, and a
   serif throughout, since this page is prose to be read rather than an
   interface to be operated.  Mono is kept for the two things that are
   literally typed — the wordmark and file names.  The app ships no web font
   and neither does this page; the only shipped face anywhere is KaTeX's,
   inside the window.  Everything here is for someone who does office work,
   not code. */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  /* warm paper */
  --paper:      #f4efe6;
  --raised:     #fffdf8;
  --raised-2:   #faf5ec;
  --ink:        #292420;
  --ink-soft:   #6d6459;
  --ink-faint:  #988d7e;
  --line:       #e5ddce;
  --line-strong:#d5cab6;
  --accent:     #2f6d5c;
  --accent-hover:#275c4d;
  --accent-ink: #fbf8f1;
  --caution:    #a5641c;
  --caution-bg: #f7ecd9;
  --caution-line:#e6cfa6;
  --shadow-soft: 0 1px 2px rgba(60, 48, 32, 0.05);

  --serif: ui-serif, 'Iowan Old Style', Georgia, 'Times New Roman', serif;
  --mono:  ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
}

:root.dark {
  /* deep ink */
  --paper:      #1e1b18;
  --raised:     #2a2521;
  --raised-2:   #241f1c;
  --ink:        #efe7db;
  --ink-soft:   #aca194;
  --ink-faint:  #7e7466;
  --line:       #38322c;
  --line-strong:#48413a;
  --accent:     #74c3aa;
  --accent-hover:#86cfb8;
  --accent-ink: #17201c;
  --caution:    #e0a85e;
  --caution-bg: #34291a;
  --caution-line:#5a4526;
  --shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.25);
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  min-height: 100%;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: hidden;
  /* A whisper of texture, so the paper is paper and not a flat fill. */
  background-image:
    radial-gradient(1200px 600px at 12% -8%, rgba(120, 150, 132, 0.06), transparent 60%),
    radial-gradient(1000px 500px at 100% 0%, rgba(160, 120, 60, 0.05), transparent 55%);
  background-attachment: fixed;
}

a { color: var(--accent); text-decoration: none; text-underline-offset: 0.18em; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

/* ── menubar ── */
.menubar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 0.1rem;
  padding: 0.4rem 0.9rem;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  line-height: 1.2;
}
.menubar .spacer { flex: 1 1 auto; }
.menu-item {
  display: flex;
  align-items: center;
  padding: 0.3rem 0.7rem;
  color: var(--ink-soft);
  font-size: 0.82rem;
  border-bottom: 2px solid transparent;
}
.menu-item:hover { color: var(--accent); text-decoration: none; }
.menu-item.current { color: var(--ink); border-bottom-color: var(--accent); }
.menu-item .ext { font-size: 0.66rem; opacity: 0.6; }

.theme-toggle {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.7rem;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  color: var(--ink-soft);
  font-family: inherit;
  font-size: 0.74rem;
  cursor: pointer;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }
.theme-toggle .glyph { font-size: 0.85rem; line-height: 1; }

/* ── page rhythm ── */
main { flex: 1 0 auto; }
.column { max-width: 50rem; margin: 0 auto; padding: 0 1.3rem; }
.section { padding: 3.4rem 0 0; }
.section p { color: var(--ink-soft); font-size: 1.02rem; line-height: 1.62; }
.section p + p { margin-top: 0.85rem; }
.section strong { color: var(--ink); font-weight: 600; }

.eyebrow {
  font-family: var(--serif);
  font-size: 1.42rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 0.9rem;
}

/* ── hero ── */
.hero { padding: 3.6rem 1.3rem 0; text-align: center; }
.hero-inner { max-width: 40rem; margin: 0 auto; }
.wordmark {
  /* Centred as one block, its lines left-aligned inside it: the letters keep
     their alignment whether or not the source rows are padded to equal width. */
  display: inline-block;
  max-width: 100%;
  margin: 0 0 1.5rem;
  text-align: left;
  font-family: var(--mono);
  font-size: clamp(7px, 2.4vw, 13px);
  line-height: 1;
  white-space: pre;
  overflow-x: auto;
  user-select: none;
  background: linear-gradient(175deg, var(--ink) 15%, var(--accent) 115%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 2px 20px color-mix(in srgb, var(--accent) 22%, transparent);
}
.thesis {
  font-family: var(--serif);
  font-size: clamp(1.55rem, 4.6vw, 2.3rem);
  font-weight: 600;
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--ink);
}
.hero .rule {
  width: 3.2rem;
  height: 2px;
  margin: 1.5rem auto;
  background: var(--accent);
  opacity: 0.65;
}
.lede {
  font-size: 1.06rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ── the safety net: three steps ── */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.6rem;
}
.step {
  padding: 1.1rem 1.15rem 1.2rem;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-soft);
}
.step .n {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.step h3 {
  font-family: var(--serif);
  font-size: 1.06rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.4rem;
}
.step p { font-size: 0.93rem; line-height: 1.55; }

/* ── the report, as the window shows it ── */
.report {
  margin-top: 1.6rem;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.report-head {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  flex-wrap: wrap;
  padding: 0.85rem 1.1rem;
  background: var(--raised-2);
  border-bottom: 1px solid var(--line);
}
.report-head b { font-family: var(--serif); font-size: 1rem; color: var(--ink); }
.report-head span { font-size: 0.82rem; color: var(--ink-faint); }
.change {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.1rem;
  border-bottom: 1px solid var(--line);
}
.change:last-child { border-bottom: 0; }
.change .what {
  flex: 0 0 auto;
  min-width: 5.4rem;
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.change .name {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--mono);
  font-size: 0.86rem;
  color: var(--ink);
  overflow-wrap: anywhere;
}
.change .undo {
  flex: 0 0 auto;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  font-size: 0.78rem;
  color: var(--ink-soft);
}
.change.conflict { background: var(--caution-bg); }
.change.conflict .what { color: var(--caution); }
.change.conflict .undo { border-color: var(--caution-line); color: var(--caution); }
.report-note {
  padding: 0.7rem 1.1rem 0.85rem;
  font-size: 0.85rem;
  color: var(--ink-faint);
  line-height: 1.5;
}
.report + p { margin-top: 1.1rem; }

/* ── the machine: what is and is not inside ── */
.facts { margin-top: 1.5rem; }
.fact {
  display: grid;
  grid-template-columns: 11rem 1fr;
  gap: 0.2rem 1.4rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--line);
}
.fact:last-child { border-bottom: 1px solid var(--line); }
.fact dt {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
}
.fact dd { font-size: 0.95rem; line-height: 1.55; color: var(--ink-soft); }

/* ── said plainly ── */
.candid {
  margin-top: 1.4rem;
  border-left: 2px solid var(--caution);
  padding-left: 1.2rem;
  list-style: none;
}
.candid li { margin-bottom: 1rem; font-size: 0.98rem; line-height: 1.6; color: var(--ink-soft); }
.candid li:last-child { margin-bottom: 0; }
.candid b { display: block; font-family: var(--serif); font-weight: 600; color: var(--ink); }

/* ── kin: the other two products ── */
.kin {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}
.kin-card {
  display: block;
  padding: 1.05rem 1.15rem;
  background: var(--raised);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink-soft);
  box-shadow: var(--shadow-soft);
}
.kin-card:hover { border-color: var(--accent); text-decoration: none; color: var(--ink-soft); }
.kin-card b {
  display: block;
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--accent);
  margin-bottom: 0.35rem;
}
.kin-card span { font-size: 0.92rem; line-height: 1.5; }

/* ── source ── */
.links { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.4rem; }
.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.95rem;
  background: var(--raised);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  color: var(--ink);
  font-size: 0.9rem;
}
.link-btn:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.link-btn svg { flex: 0 0 auto; }

/* ── backer ── */
.backer { padding: 3.4rem 0 0; text-align: center; }
.backer p { font-size: 0.9rem; color: var(--ink-faint); }
.backer-logo { display: inline-block; margin-top: 0.9rem; opacity: 0.85; }
.backer-logo:hover { opacity: 1; }

/* ── footer ── */
.footer {
  flex: 0 0 auto;
  margin-top: 3.4rem;
  padding: 1.2rem;
  border-top: 1px solid var(--line);
  text-align: center;
  font-size: 0.8rem;
  color: var(--ink-faint);
}
.footer a { color: var(--ink-soft); }
.footer a:hover { color: var(--accent); }

@media (max-width: 44rem) {
  .steps, .kin { grid-template-columns: 1fr; }
  .fact { grid-template-columns: 1fr; }
  .change { flex-wrap: wrap; }
}