/* Forgeline — "the spec sheet" design system. Shared by every page; no build step. */

:root {
  --bg: #0f1110; --surface: #161917; --ink: #ece9e1; --muted: #a3a094;
  --hair: #2b2e2b; --hair-strong: #3c403c;
  --sm: #58c0b4; --tb: #d9a856;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
:root[data-theme="light"] {
  --bg: #faf8f3; --surface: #ffffff; --ink: #1b1b15; --muted: #67645a;
  --hair: #ddd9cd; --hair-strong: #c4c0b2;
  --sm: #00695c; --tb: #7d5712;
}
/* No-JS fallback: honour the system preference before the toggle script runs */
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg: #faf8f3; --surface: #ffffff; --ink: #1b1b15; --muted: #67645a;
    --hair: #ddd9cd; --hair-strong: #c4c0b2;
    --sm: #00695c; --tb: #7d5712;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--sans); font-size: 16.5px; line-height: 1.6;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 2px;
}
::selection { background: var(--ink); color: var(--bg); }

.wrap { max-width: 980px; margin: 0 auto; padding: 0 20px; }
.doc  { max-width: 700px; margin: 0 auto; padding: 0 20px 56px; }

/* ── Masthead ─────────────────────────────────────────────── */
.mast {
  border-bottom: 1px solid var(--hair);
}
.mast .wrap, .mast .doc {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 12px; padding-top: 14px; padding-bottom: 14px;
}
.mast .doc { padding-bottom: 14px; }
.wordmark {
  font-weight: 800; letter-spacing: 0.02em; font-size: 1.02rem;
  text-transform: uppercase; text-decoration: none; white-space: nowrap;
}
.wordmark small {
  font-family: var(--mono); font-weight: 400; font-size: 0.68rem;
  color: var(--muted); letter-spacing: 0.12em; margin-left: 10px;
}
.mast-right { display: flex; align-items: baseline; gap: 16px; }
.mast-loc {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--muted);
}
.theme-toggle {
  background: none; color: var(--ink); border: 1px solid var(--hair-strong);
  border-radius: 3px; padding: 4px 10px; cursor: pointer;
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
}
.theme-toggle:hover { border-color: var(--ink); }
@media (max-width: 620px) {
  .wordmark small, .mast-loc { display: none; }
}

/* ── Spec-sheet primitives ────────────────────────────────── */
.kicker {
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--muted); margin: 0 0 10px;
}
.rule { border: 0; border-top: 1px solid var(--hair); margin: 0; }
.rule-strong { border: 0; border-top: 2px solid var(--ink); margin: 0; }

/* ── Hero (index) ─────────────────────────────────────────── */
.hero { padding-top: 44px; }
.hero h1 {
  font-size: clamp(2rem, 6.5vw, 3.4rem); line-height: 1.06;
  letter-spacing: -0.015em; font-weight: 800; margin: 0 0 14px; max-width: 17ch;
}
.hero .lede { color: var(--muted); font-size: 1.06rem; max-width: 52ch; margin: 0 0 34px; }
.hero .lede strong { color: var(--ink); font-weight: 600; }

.facts-strip {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 2px solid var(--ink); border-bottom: 1px solid var(--hair);
  margin-bottom: 8px;
}
.facts-strip > div { padding: 14px 14px 16px; border-left: 1px solid var(--hair); }
.facts-strip > div:first-child { border-left: 0; padding-left: 0; }
.facts-strip b {
  display: block; font-size: 1.45rem; font-weight: 800;
  font-variant-numeric: tabular-nums; line-height: 1.15;
}
.facts-strip span {
  font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.13em;
  text-transform: uppercase; color: var(--muted);
}
@media (max-width: 560px) {
  .facts-strip { grid-template-columns: 1fr 1fr; }
  .facts-strip > div:nth-child(3) { border-left: 0; padding-left: 0; }
  .facts-strip > div:nth-child(n+3) { border-top: 1px solid var(--hair); }
}

/* ── App sections (index) ─────────────────────────────────── */
.app { padding-top: 46px; padding-bottom: 10px; }
.app-head { display: flex; align-items: center; gap: 16px; margin: 18px 0 6px; }
.app-head img { width: 64px; height: 64px; border-radius: 14px; border: 1px solid var(--hair); flex-shrink: 0; }
.app-head > div { min-width: 0; }
.app-head h2 { font-size: clamp(1.4rem, 4vw, 1.9rem); letter-spacing: -0.01em; font-weight: 800; margin: 0; line-height: 1.15; }
.app-head .sub { color: var(--muted); font-size: 0.95rem; margin: 2px 0 0; }
.app .claim { max-width: 58ch; margin: 14px 0 22px; }

.accent-sm { color: var(--sm); }
.accent-tb { color: var(--tb); }

.shots {
  display: flex; gap: 12px; overflow-x: auto; padding: 4px 2px 14px;
  scroll-snap-type: x proximity; -webkit-overflow-scrolling: touch;
  scrollbar-width: thin; scrollbar-color: var(--hair-strong) transparent;
}
.shots img {
  height: auto; width: 216px; flex: 0 0 auto; scroll-snap-align: start;
  border: 1px solid var(--hair); border-radius: 10px; background: var(--surface);
}
@media (max-width: 560px) { .shots img { width: 186px; } }

.spec { margin: 16px 0 0; }
.spec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 40px; }
@media (max-width: 720px) { .spec-grid { grid-template-columns: 1fr; } }
.spec dl { margin: 0; }
.spec .row {
  display: grid; grid-template-columns: 42% minmax(0, 1fr); gap: 12px;
  padding: 8px 0; border-bottom: 1px solid var(--hair);
}
.spec dt {
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.13em;
  text-transform: uppercase; color: var(--muted); padding-top: 3px;
}
.spec dd { margin: 0; font-size: 0.93rem; overflow-wrap: anywhere; }
.spec dd .arabic { font-size: 1.05em; }

.footnote {
  display: grid; grid-template-columns: auto 1fr; gap: 10px;
  margin: 18px 0 0; color: var(--muted); font-size: 0.87rem; max-width: 62ch;
}
.footnote .mark { font-family: var(--mono); }

.app-actions { display: flex; flex-wrap: wrap; gap: 10px 14px; margin: 24px 0 6px; align-items: center; }
.btn {
  display: inline-block; text-decoration: none;
  font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 10px 16px; border-radius: 3px; border: 1px solid var(--ink);
}
.btn-solid { background: var(--ink); color: var(--bg); }
.btn-solid:hover { background: var(--bg); color: var(--ink); }
.btn-ghost { color: var(--ink); border-color: var(--hair-strong); }
.btn-ghost:hover { border-color: var(--ink); }
.app-actions .quiet { font-size: 0.85rem; color: var(--muted); }

/* ── Principles / clauses ─────────────────────────────────── */
.clauses { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; padding: 20px 0 8px; }
@media (max-width: 720px) { .clauses { grid-template-columns: 1fr; gap: 20px; } }
.clause .num {
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.14em; color: var(--muted);
  display: block; border-top: 1px solid var(--hair-strong); padding-top: 10px; margin-bottom: 8px;
}
.clause h3 { margin: 0 0 6px; font-size: 1.02rem; font-weight: 700; }
.clause p { margin: 0; color: var(--muted); font-size: 0.92rem; }

/* ── Maker / footer ───────────────────────────────────────── */
.maker { padding-top: 10px; padding-bottom: 26px; }
.maker p { max-width: 60ch; margin: 14px 0; }
.maker .contact-line { font-family: var(--mono); font-size: 0.82rem; }
.maker .contact-line a { color: var(--ink); }

footer.site {
  border-top: 1px solid var(--hair); color: var(--muted); font-size: 0.8rem;
}
footer.site .wrap, footer.site .doc {
  display: flex; flex-wrap: wrap; gap: 6px 22px; justify-content: space-between;
  padding-top: 18px; padding-bottom: 42px;
}
footer.site a { color: var(--muted); }

/* ── Document pages (product + privacy) ───────────────────── */
.doc-title { padding-top: 36px; }
.doc h1 { font-size: clamp(1.5rem, 5vw, 2.05rem); font-weight: 800; letter-spacing: -0.01em; line-height: 1.2; margin: 34px 0 8px; }
.doc-title h1 { font-size: clamp(1.6rem, 5vw, 2.2rem); letter-spacing: -0.01em; font-weight: 800; line-height: 1.15; margin: 8px 0 6px; }
.doc-title .muted, .doc .muted { color: var(--muted); }
.doc h2 {
  font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted); border-top: 1px solid var(--hair); padding-top: 14px; margin: 34px 0 12px;
}
.doc p, .doc li { font-size: 0.97rem; }
.doc ul { padding-left: 20px; }
.doc li { margin-bottom: 8px; }
.doc code { font-family: var(--mono); font-size: 0.88em; }
.doc a { text-decoration-color: var(--hair-strong); }
.doc a:hover { text-decoration-color: var(--ink); }
.doc dl.facts {
  display: grid; grid-template-columns: max-content 1fr; gap: 0 18px;
  border-top: 2px solid var(--ink); margin: 26px 0; padding: 0;
}
.doc dl.facts dt {
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.13em; text-transform: uppercase;
  color: var(--muted); padding: 9px 0; border-bottom: 1px solid var(--hair);
}
.doc dl.facts dd { margin: 0; padding: 7px 0; border-bottom: 1px solid var(--hair); font-size: 0.93rem; overflow-wrap: anywhere; }
.doc .shots { margin-top: 8px; }
.doc .wide-shot { border: 1px solid var(--hair); border-radius: 10px; margin: 8px 0; }

/* ── Motion & print ───────────────────────────────────────── */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
  .btn, .theme-toggle { transition: background 120ms ease, color 120ms ease, border-color 120ms ease; }
}