/* Latchway web pages. Ink on paper, one brass accent, no third-party
   anything. Dark mode follows the system. The CSP forbids inline styles,
   so every rule lives here. */

:root {
  --paper: #f7f8f6;
  --ink: #1d2a3a;
  --ink-soft: #55606d;
  --line: #d9dde1;
  --brass: #b8862b;
  --brass-deep: #96691c;
  --brass-soft: #f3e9d3;
  --moss: #4f7a5b;
  --rust: #a6472f;
  --wash: #edeff1;
  --card: #ffffff;
  --code: #1b2533;
  --code-ink: #e9eef2;
  --radius: 14px;
  --radius-lg: 20px;
  --measure: 36rem;
  --wide: 62rem;
  --shadow: 0 1px 2px rgba(29, 42, 58, 0.06), 0 8px 24px rgba(29, 42, 58, 0.06);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #14202d;
    --ink: #e9eef2;
    --ink-soft: #a7b1bc;
    --line: #2b3a4a;
    --brass: #d2a24a;
    --brass-deep: #b8862b;
    --brass-soft: #2f2a1c;
    --moss: #7fb08c;
    --rust: #d9785f;
    --wash: #1b2a39;
    --card: #192636;
    --code: #0f1823;
    --code-ink: #e9eef2;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.25);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Segoe UI Variable Text", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.55;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

a { color: var(--ink); text-decoration-thickness: 1px; text-underline-offset: 0.15em; }
a:hover { color: var(--brass-deep); }

a:focus-visible, button:focus-visible, .button:focus-visible {
  outline: 3px solid var(--brass);
  outline-offset: 3px;
  border-radius: 6px;
}

p { margin: 0 0 1rem; }
code, pre { font-family: ui-monospace, "Cascadia Code", "SF Mono", Menlo, Consolas, monospace; }
code { font-size: 0.93em; background: var(--wash); padding: 0.1em 0.35em; border-radius: 5px; }

/* --- layout -------------------------------------------------------------- */

.wrap {
  width: 100%;
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 1.25rem;
}

main { flex: 1; }

section { padding: 2.5rem 0; }

h1 {
  font-size: clamp(2.1rem, 6.5vw, 3.25rem);
  line-height: 1.06;
  letter-spacing: -0.025em;
  font-weight: 650;
  margin: 0 0 1rem;
  text-wrap: balance;
  max-width: 22ch;
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 1.9rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-weight: 650;
  margin: 0 0 0.75rem;
  text-wrap: balance;
}

h3 {
  font-size: 1.1rem;
  line-height: 1.3;
  font-weight: 650;
  margin: 0 0 0.35rem;
}

.lede {
  font-size: clamp(1.1rem, 2.2vw, 1.3rem);
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: var(--measure);
  margin-bottom: 1.75rem;
  text-wrap: pretty;
}

.measure { max-width: var(--measure); }
.muted { color: var(--ink-soft); }
.small { font-size: 0.92rem; }

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass-deep);
  margin-bottom: 0.6rem;
}

/* --- header -------------------------------------------------------------- */

.site-header {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  font-weight: 650;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}
.brand:hover { color: var(--ink); }
.brand .mark { width: 30px; height: 30px; margin: 0; }

.site-nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.95rem;
}
.site-nav a { text-decoration: none; color: var(--ink-soft); }
.site-nav a:hover { color: var(--ink); }

@media (max-width: 480px) {
  .site-nav { gap: 0.9rem; font-size: 0.9rem; }
}

/* --- the mark ------------------------------------------------------------ */

.mark { display: block; width: 72px; height: 72px; }
.mark svg { width: 100%; height: 100%; display: block; }
.mark .post { fill: var(--ink); }
.mark .keeper { stroke: var(--ink); }
.mark .bar { fill: var(--brass); }
.mark .pivot { fill: var(--ink); }

/* --- hero ---------------------------------------------------------------- */

.hero { padding: 3.5rem 0 2rem; }

.hero .actions { margin: 1.75rem 0 1rem; }

.hero .status-line {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.5rem 0 1rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.3rem;
  border-radius: var(--radius);
  border: 1.5px solid transparent;
  font: inherit;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease, transform 120ms ease;
}
.button:active { transform: translateY(1px); }

.button.primary { background: var(--brass); color: #15120a; }
.button.primary:hover { background: var(--brass-deep); color: #fff; }

.button.secondary { background: transparent; color: var(--ink); border-color: var(--line); }
.button.secondary:hover { border-color: var(--ink); color: var(--ink); }

.button svg { width: 18px; height: 18px; flex: none; }

@media (max-width: 480px) {
  .actions { flex-direction: column; }
  .button { width: 100%; }
}

/* --- illustration -------------------------------------------------------- */

.illustration {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.25rem 1rem;
  box-shadow: var(--shadow);
}
.illustration svg { width: 100%; height: auto; display: block; }
.illustration figcaption {
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.92rem;
  margin-top: 0.75rem;
}

.ill-phone { fill: var(--card); stroke: var(--ink); stroke-width: 2.5; }
.ill-screen { fill: var(--wash); }
.ill-ink { fill: var(--ink); }
.ill-ink-soft { fill: var(--ink-soft); }
.ill-stroke { stroke: var(--ink); fill: none; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.ill-soft-stroke { stroke: var(--ink-soft); fill: none; stroke-width: 1.75; stroke-linecap: round; stroke-dasharray: 4 6; }
.ill-brass { fill: var(--brass); }
.ill-brass-stroke { stroke: var(--brass); fill: none; stroke-width: 6; stroke-linecap: round; }
.ill-brass-soft { fill: var(--brass-soft); }
.ill-text { font: 650 13px "Segoe UI", system-ui, sans-serif; fill: var(--ink); }
.ill-text-soft { font: 500 12px "Segoe UI", system-ui, sans-serif; fill: var(--ink-soft); }
.ill-cloud { fill: var(--wash); stroke: var(--line); stroke-width: 2; }

/* --- steps --------------------------------------------------------------- */

.steps {
  list-style: none;
  counter-reset: step;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.steps li {
  counter-increment: step;
  position: relative;
  padding-top: 0.25rem;
}
.steps li::before {
  content: counter(step);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  font-weight: 650;
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}
.steps p { margin: 0; color: var(--ink-soft); }

@media (max-width: 720px) {
  .steps { grid-template-columns: 1fr; gap: 1.5rem; }
}

/* --- feature cards ------------------------------------------------------- */

.features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 1.5rem 0 0;
}
.feature {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.25rem 1.1rem;
}
.feature .icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--brass-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.9rem;
}
.feature .icon svg { width: 22px; height: 22px; stroke: var(--brass-deep); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.feature p { margin: 0; color: var(--ink-soft); font-size: 0.98rem; }

@media (max-width: 640px) {
  .features { grid-template-columns: 1fr; }
}

/* --- facts table --------------------------------------------------------- */

.facts {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
  max-width: 44rem;
}
.facts li {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 11rem 1fr;
  gap: 1rem;
}
.facts li span:first-child { color: var(--ink-soft); }
.facts li .never { color: var(--moss); font-weight: 650; }
@media (max-width: 480px) {
  .facts li { grid-template-columns: 1fr; gap: 0.15rem; }
}

/* --- split cards --------------------------------------------------------- */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}
.split .card { margin: 0; }
@media (max-width: 720px) { .split { grid-template-columns: 1fr; } }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  margin: 1.5rem 0;
}
.card p:last-child { margin-bottom: 0; }

/* --- terminal block ------------------------------------------------------ */

pre.terminal {
  background: var(--code);
  color: var(--code-ink);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 1.25rem 0 0.75rem;
  tab-size: 2;
}
pre.terminal code { background: none; padding: 0; color: inherit; font-size: inherit; }
pre.terminal .c { color: #8b97a6; }
pre.terminal .p { color: #d2a24a; }

/* --- share page ---------------------------------------------------------- */

.share main .wrap { max-width: 40rem; }
.share .hero { padding-top: 2.5rem; }

.file-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  margin: 1.5rem 0;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 1.25rem;
  padding: 0.45rem 0.85rem 0.45rem 0.7rem;
  border-radius: 999px;
  background: var(--wash);
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 500;
}
.status .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--line);
  flex: none;
}
.status.online .dot { background: var(--moss); box-shadow: 0 0 0 4px rgba(79, 122, 91, 0.18); }
.status.offline .dot { background: var(--rust); }

.file-card .actions { margin: 0 0 0.5rem; }
.file-card .actions .button { flex: 1 1 auto; }

.note {
  background: var(--wash);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin: 1rem 0 0;
  font-size: 0.97rem;
}
.note p:last-child { margin-bottom: 0; }
.note pre.terminal {
  margin: 0.75rem 0 0;
  font-size: 0.84rem;
  white-space: pre-wrap;
  word-break: break-all;
}

.hidden { display: none !important; }

/* --- prose pages (privacy) ---------------------------------------------- */

.prose { max-width: var(--measure); }
.prose h2 { font-size: 1.3rem; margin: 2.25rem 0 0.5rem; }
.prose .facts { max-width: none; }

/* --- footer -------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.75rem 0 2.25rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
}
.site-footer p { margin: 0; }
.site-footer a { color: inherit; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 1rem; }
.site-footer nav a { text-decoration: none; }
.site-footer nav a:hover { text-decoration: underline; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
  html { scroll-behavior: auto; }
}

@media print {
  .site-header, .site-footer, .actions { display: none; }
  body { background: #fff; color: #000; }
}