/* =========================================================
   MA MEDIA — Direction G: Mecha schematic / engineering blueprint
   Brand palette: paper · ink · crimson on paper.
   ========================================================= */

:root {
  --bp: var(--paper);
  --bp-2: var(--paper-2);
  --grid: rgba(17, 17, 16, 0.12);
  --grid-strong: rgba(17, 17, 16, 0.22);
  --line: var(--ink-80);
  --dim: var(--ink-60);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-mono);
  background:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    var(--bp);
  background-size: 28px 28px;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  font-size: 13px;
}

.preview-nav {
  position: fixed; top: 0; left: 0; right: 0;
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 18px; background: var(--ink); color: var(--paper);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase;
  z-index: 100; overflow-x: auto;
}
.preview-nav__links { display: flex; gap: 14px; }
.preview-nav a { color: var(--paper); text-decoration: none; opacity: 0.55; white-space: nowrap; }
.preview-nav a:hover, .preview-nav a[aria-current] { opacity: 1; color: var(--accent); }
.preview-nav__label { opacity: 0.55; white-space: nowrap; padding-right: 16px; }

.page { padding-top: 42px; }

.sch-header {
  display: grid;
  grid-template-columns: auto 1fr auto auto auto;
  gap: 24px; align-items: center;
  padding: 14px 5vw;
  border-bottom: 1px solid var(--line);
  background: var(--bp);
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--dim);
}
.sch-header span:nth-child(2) { color: var(--ink); letter-spacing: 0.4em; font-weight: 600; }
.sch-header__pulse { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; }

/* HERO */
.sch-hero {
  padding: clamp(40px, 7vw, 90px) 5vw clamp(60px, 9vw, 110px);
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(30px, 5vw, 70px);
  position: relative;
}

.sch-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(60px, 11vw, 160px);
  line-height: 0.88;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  margin: 0;
  color: var(--ink);
}
.sch-hero__title span { display: block; }
.sch-hero__title span:nth-child(1) {
  color: var(--dim);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.10em; letter-spacing: 0.3em;
  margin-bottom: 14px;
  text-transform: uppercase;
}
.sch-hero__title em { color: var(--accent); font-style: normal; font-weight: 800; }

.sch-hero__sub {
  margin-top: 30px;
  color: var(--ink-80);
  font-family: var(--font-mono);
  font-size: 13px; line-height: 1.8;
  max-width: 50ch;
}
.sch-hero__sub strong { color: var(--ink); font-weight: 600; }
.sch-hero__sub em { color: var(--accent); font-style: normal; }

.sch-hero__specs { display: grid; gap: 10px; align-content: start; position: relative; }
.sch-hero__specs::before {
  content: "FIG. 01 — UNIT SCHEMATIC";
  color: var(--ink);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 10px; letter-spacing: 0.4em;
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
  margin-bottom: 4px;
}
.sch-spec {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 14px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
}
.sch-spec__key { color: var(--dim); }
.sch-spec__val { color: var(--ink); font-weight: 600; }
.sch-spec__unit { color: var(--accent); font-size: 10px; }

/* diagram */
.sch-diagram {
  margin: 40px 5vw 60px;
  border: 1px solid var(--line);
  padding: 28px 32px;
  position: relative;
  background: rgba(245, 243, 239, 0.7);
}
.sch-diagram::before, .sch-diagram::after,
.sch-diagram > .corner::before, .sch-diagram > .corner::after {
  content: ""; position: absolute; width: 12px; height: 12px;
  border: 1.4px solid var(--accent);
}
.sch-diagram::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.sch-diagram::after { top: -1px; right: -1px; border-left: none; border-bottom: none; }
.sch-diagram > .corner { position: absolute; inset: 0; pointer-events: none; }
.sch-diagram > .corner::before { bottom: -1px; left: -1px; border-right: none; border-top: none; }
.sch-diagram > .corner::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }

.sch-diagram__title {
  display: flex; justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--dim); margin-bottom: 22px;
}
.sch-diagram__title em { color: var(--accent); font-style: normal; }
.sch-diagram__body {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.sch-callout {
  position: relative;
  border-left: 1px solid var(--line);
  padding-left: 14px;
}
.sch-callout::before {
  content: ""; position: absolute;
  left: -4px; top: 0; width: 7px; height: 7px;
  background: var(--accent); border-radius: 50%;
}
.sch-callout__id {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.32em; color: var(--accent); margin-bottom: 6px;
}
.sch-callout__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px; letter-spacing: -0.01em;
  color: var(--ink); text-transform: uppercase; line-height: 1.1;
  margin-bottom: 6px;
}
.sch-callout__desc {
  font-family: var(--font-mono);
  font-size: 11px; color: var(--dim); line-height: 1.5; letter-spacing: 0.05em;
}

/* cut */
.sch-cut {
  padding: 28px 5vw;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 24px; align-items: center;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bp-2);
}
.sch-cut__rule { height: 1px; background: repeating-linear-gradient(90deg, var(--line) 0 8px, transparent 8px 12px); }
.sch-cut__label {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(20px, 3vw, 28px);
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.sch-cut__label em { color: var(--accent); font-style: normal; }

/* brief */
.sch-brief {
  padding: clamp(50px, 8vw, 110px) 5vw;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: clamp(30px, 5vw, 80px);
}
.sch-brief__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(100px, 16vw, 200px);
  line-height: 0.85; letter-spacing: -0.04em;
  margin: 0;
  -webkit-text-stroke: 1.4px var(--ink);
  color: transparent;
}
.sch-brief__num em { color: var(--accent); -webkit-text-stroke: 0; font-style: normal; }
.sch-brief__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.05;
  letter-spacing: -0.015em;
  text-transform: uppercase;
  margin: 0 0 24px;
  color: var(--ink);
}
.sch-brief__title em { color: var(--accent); font-style: normal; }
.sch-brief__prose {
  font-family: var(--font-mono);
  font-size: 13px; line-height: 1.85;
  color: var(--ink-80);
  max-width: 64ch;
}
.sch-brief__prose strong { color: var(--ink); font-weight: 600; }
.sch-brief__prose em { color: var(--accent); font-style: normal; }

.sch-brief__list {
  list-style: none; padding: 0; margin: 36px 0 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 28px;
}
.sch-brief__list li {
  padding: 12px 0;
  display: grid; grid-template-columns: 48px 1fr auto;
  gap: 14px; align-items: center;
  border-bottom: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink);
}
.sch-brief__list b { color: var(--accent); font-weight: 600; }
.sch-brief__list em { color: var(--dim); font-style: normal; font-size: 10px; }

/* footer */
.sch-footer {
  padding: 60px 5vw 90px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px; align-items: end;
  background: var(--bp);
}
.sch-footer__big {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(60px, 11vw, 160px);
  line-height: 0.85; letter-spacing: -0.04em;
  text-transform: uppercase;
  margin: 0;
  color: var(--ink);
}
.sch-footer__big em { color: var(--accent); font-style: normal; }
.sch-footer__meta {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--dim); line-height: 2; text-align: right;
}
.sch-footer__meta strong { color: var(--accent); font-weight: 600; }

[dir="rtl"] body { font-family: var(--font-arabic); }

@media (max-width: 900px) {
  .sch-hero { grid-template-columns: 1fr; }
  .sch-diagram__body { grid-template-columns: 1fr 1fr; }
  .sch-brief { grid-template-columns: 1fr; }
  .sch-brief__list { grid-template-columns: 1fr; }
  .sch-cut { grid-template-columns: 1fr; }
  .sch-footer { grid-template-columns: 1fr; }
  .sch-footer__meta { text-align: left; }
}