/* ═══════════════════════════════════════════════════════════════════
   PROJECT PAGE — shared design system.
   Borrows the home page's vocabulary (palette, type, mono labels,
   red accents, rule lines, bordered media). Does NOT borrow its
   landing-page chrome (no scan line, no HUD overlays, no 70vh dark
   hero). Project pages read as case studies.
   ═══════════════════════════════════════════════════════════════════ */

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

:root {
  --ink:   #0D0D0D;
  --paper: #F7F4EE;
  --red:   #C83200;
  --gray:  #888;
  --rule:  #DDDAD3;
  --mono:  'JetBrains Mono', 'Courier New', monospace;
  --sans:  'Space Grotesk', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  color: var(--ink);
  overflow-x: hidden; -webkit-font-smoothing: antialiased;
  background:
    radial-gradient(circle, rgba(13,13,13,0.045) 1px, transparent 1.4px) 0 0 / 24px 24px,
    var(--paper);
}
img, video, iframe { display: block; max-width: 100%; }
a { color: inherit; }

/* ── WRAP ── */
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 60px; }

/* ── NAV (slim, paper from load) ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 9000; height: 56px;
  background: rgba(247,244,238,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  max-width: 1180px; margin: 0 auto; padding: 0 60px;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.nav-back, .nav-meta {
  font-family: var(--mono); font-size: 0.66rem; font-weight: 700;
  color: var(--ink); text-decoration: none;
  text-transform: uppercase; letter-spacing: 0.18em;
  transition: color 0.2s;
}
.nav-back .arrow {
  display: inline-block; margin-right: 8px;
  transition: transform 0.25s;
}
.nav-back:hover { color: var(--red); }
.nav-back:hover .arrow { transform: translateX(-4px); }
.nav-meta { font-weight: 500; color: var(--gray); letter-spacing: 0.14em; }

/* ── PAGE HERO — colorful gradient, white type ── */
.page-hero {
  position: relative;
  padding: 116px 0 56px;
  color: white;
  overflow: hidden;
  border-bottom: 3px solid var(--red);
  background: var(--page-gradient,
    linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0ea5e9 100%));
}
.page-hero::after {
  content: ''; position: absolute; inset: 0;
  background: rgba(0,0,0,0.16);
  z-index: 0; pointer-events: none;
}
.page-hero > .wrap { position: relative; z-index: 1; }
.page-hero-bg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; z-index: 0;
  opacity: 0.32; filter: grayscale(15%) contrast(110%);
}

.page-eyebrow {
  font-family: var(--mono); font-size: 0.66rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.24em;
  color: var(--red); margin-bottom: 24px;
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.page-hero .page-eyebrow { color: var(--red); }
.page-eyebrow .sep { color: rgba(255,255,255,0.4); font-weight: 400; }
.page-eyebrow .meta-text { color: rgba(255,255,255,0.55); }

/* small red dot, slow pulse — echoes the home page timeline dot */
.pulse-dot {
  display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  background: var(--red); flex-shrink: 0;
  animation: pulseDot 2.4s ease-out infinite;
}
@keyframes pulseDot {
  0%   { box-shadow: 0 0 0 0   rgba(200,50,0,0.55), 0 0 0 2px rgba(200,50,0,0.22); }
  70%  { box-shadow: 0 0 0 10px rgba(200,50,0,0),    0 0 0 2px rgba(200,50,0,0.22); }
  100% { box-shadow: 0 0 0 0   rgba(200,50,0,0),    0 0 0 2px rgba(200,50,0,0.22); }
}
@media (prefers-reduced-motion: reduce) {
  .pulse-dot { animation: none; }
}

.page-title {
  font-size: clamp(2rem, 4.8vw, 3.6rem); font-weight: 700;
  line-height: 1.04; letter-spacing: -0.028em;
  margin-bottom: 22px;
  color: white;
  max-width: 18ch;
}
.page-sub {
  font-family: var(--mono); font-size: 0.78rem;
  color: rgba(255,255,255,0.68); letter-spacing: 0.16em;
  text-transform: uppercase; margin-bottom: 30px;
  max-width: 56ch;
}
.page-hero .tags .tag {
  color: rgba(255,255,255,0.85);
  border-color: rgba(255,255,255,0.32);
  background: rgba(255,255,255,0.04);
}

/* ── SECTIONS ── */
section { padding: 64px 0; position: relative; }
section + section { padding-top: 0; }
section.tail { padding-bottom: 0; }
section.lead { padding-top: 72px; }

.s-header { display: flex; align-items: center; gap: 16px; margin-bottom: 40px; }
.s-label {
  font-family: var(--mono); font-size: 0.6rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--red); white-space: nowrap;
}
.s-rule {
  flex: 1; height: 1px;
  background: linear-gradient(90deg,
    var(--red) 0px, var(--red) 18px,
    var(--rule) 28px, var(--rule) 100%);
}
section.dark .s-rule {
  background: linear-gradient(90deg,
    var(--red) 0px, var(--red) 18px,
    rgba(255,255,255,0.12) 28px, rgba(255,255,255,0.12) 100%);
}
.s-num {
  font-family: var(--mono); font-size: 0.6rem; color: var(--gray);
  white-space: nowrap; letter-spacing: 0.05em;
}

.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── DARK SECTION (use sparingly) ── */
section.dark { background: var(--ink); color: white; }
section.dark .s-label { color: var(--red); }
section.dark .s-num { color: rgba(255,255,255,0.3); }
section.dark .prose { color: rgba(255,255,255,0.72); }
section.dark .bullets li {
  border-color: rgba(255,255,255,0.1); color: rgba(255,255,255,0.7);
}
section.dark .bullets li:last-child { border-bottom-color: rgba(255,255,255,0.1); }
section.dark .tag { color: rgba(255,255,255,0.42); border-color: rgba(255,255,255,0.12); }
section.dark .fig img, section.dark .media {
  border-color: rgba(255,255,255,0.1); background: rgba(255,255,255,0.02);
}
section.dark figcaption,
section.dark .fig-caption,
section.dark .media-caption { color: rgba(255,255,255,0.36); }
section.dark code {
  background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.1); color: white;
}

/* ── PROSE ── */
.prose { font-size: 1.05rem; line-height: 1.75; color: var(--ink); max-width: 760px; }
.prose p + p { margin-top: 20px; }
.prose strong { font-weight: 600; }
.prose em { font-style: italic; color: var(--red); }
.prose code, code {
  font-family: var(--mono); font-size: 0.85em;
  background: rgba(13,13,13,0.05); padding: 1px 7px;
  border: 1px solid var(--rule);
}
.prose a {
  color: var(--red); text-decoration: none;
  border-bottom: 1px solid var(--red); padding-bottom: 1px;
}
.prose a:hover { background: rgba(200,50,0,0.06); }

/* ── TAGS ── */
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-family: var(--mono); font-size: 0.66rem; text-transform: uppercase;
  letter-spacing: 0.09em; color: var(--gray);
  border: 1px solid var(--rule); padding: 3px 9px;
  background: transparent;
}

/* ── BULLETS — bordered editorial rows ── */
.bullets { list-style: none; padding: 0; max-width: 820px; }
.bullets li {
  position: relative; padding: 18px 0 18px 36px;
  border-top: 1px solid var(--rule);
  font-size: 0.97rem; line-height: 1.65; color: var(--ink);
}
.bullets li:last-child { border-bottom: 1px solid var(--rule); }
.bullets li::before {
  content: '→'; position: absolute; left: 0; top: 18px;
  color: var(--red); font-family: var(--mono); font-size: 0.85rem;
}
.bullets li strong {
  display: block; font-family: var(--mono); font-size: 0.6rem;
  text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--red); margin-bottom: 4px; font-weight: 700;
}
.bullets.plain li::before { content: '·'; font-size: 1.2rem; top: 12px; }

/* ── MEDIA — 16:9 video/iframe holder ── */
.media {
  position: relative; padding-bottom: 56.25%; height: 0;
  border: 1px solid var(--rule); background: var(--ink); overflow: hidden;
}
.media iframe, .media video {
  position: absolute; inset: 0; width: 100%; height: 100%; border: 0;
}
.media.aspect-4-3 { padding-bottom: 75%; }
.media.aspect-3-4 { padding-bottom: 133.33%; }
.media.aspect-letter { padding-bottom: 70%; }

.media-caption, figcaption {
  margin-top: 12px; font-family: var(--mono); font-size: 0.6rem;
  color: var(--gray); text-transform: uppercase; letter-spacing: 0.14em;
}

/* ── FIG (image with optional caption) ── */
.fig { margin: 0; }
.fig img {
  width: 100%; height: auto; display: block;
  border: 1px solid var(--rule); background: #ECEAE3;
}
.fig.contain img { object-fit: contain; }
.fig.crop img { aspect-ratio: 16/10; object-fit: cover; }

/* ── PLACEHOLDER IMAGE — stand-in until a real screenshot/diagram lands ── */
.placeholder-img {
  position: relative;
  width: 100%; aspect-ratio: 16 / 10;
  border: 1px dashed var(--rule);
  background:
    repeating-linear-gradient(45deg, rgba(13,13,13,0.025) 0 2px, transparent 2px 14px);
  display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 24px;
}
.placeholder-img.aspect-16-9 { aspect-ratio: 16 / 9; }
.placeholder-img.aspect-4-3 { aspect-ratio: 4 / 3; }
.placeholder-img-label {
  font-family: var(--mono); font-size: 0.66rem;
  text-transform: uppercase; letter-spacing: 0.12em; color: var(--gray);
  line-height: 1.7;
}
.placeholder-img-label .filename {
  display: block; margin-top: 6px; color: var(--red); font-size: 0.62rem;
}
section.dark .placeholder-img {
  border-color: rgba(255,255,255,0.16);
  background: repeating-linear-gradient(45deg, rgba(255,255,255,0.02) 0 2px, transparent 2px 14px);
}
section.dark .placeholder-img-label { color: rgba(255,255,255,0.4); }

/* ── GRIDS ── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.grid-auto-280 { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.grid-auto-220 { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }

.layout-prose-rail {
  display: grid; grid-template-columns: 1fr 260px;
  gap: 56px; align-items: start;
}

/* ── CALLOUT — light editorial banner ── */
.callout {
  border-top: 3px solid var(--red); padding-top: 24px; max-width: 900px;
}
.callout-label {
  font-family: var(--mono); font-size: 0.6rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.2em; color: var(--gray);
  margin-bottom: 12px; display: block;
}
.callout-title {
  font-size: clamp(1.6rem, 3.6vw, 2.4rem); font-weight: 700;
  letter-spacing: -0.03em; line-height: 1.1; margin-bottom: 8px;
}

/* ── STATS ROW — key numbers, typographic emphasis ── */
.stats-row {
  display: flex; flex-wrap: wrap;
  gap: 40px 64px;
  margin-top: 44px;
  padding-top: 32px;
  border-top: 1px solid var(--rule);
  max-width: 980px;
}
.stat-cell { display: flex; flex-direction: column; min-width: 110px; }
.stat-num {
  font-family: var(--mono); font-weight: 700;
  font-size: clamp(1.7rem, 2.8vw, 2.3rem);
  color: var(--red); line-height: 1;
  letter-spacing: -0.015em;
}
.stat-num .unit {
  font-size: 0.55em; color: var(--gray);
  margin-left: 4px; font-weight: 500; letter-spacing: 0;
}
.stat-label {
  margin-top: 10px; font-family: var(--mono);
  font-size: 0.58rem; color: var(--gray);
  text-transform: uppercase; letter-spacing: 0.14em;
}
section.dark .stats-row { border-top-color: rgba(255,255,255,0.12); }
section.dark .stat-num { color: var(--red); }
section.dark .stat-label { color: rgba(255,255,255,0.5); }

/* ── SPEC ROWS — key/value tables (legacy, kept for misc use) ── */
.spec-list {
  border-top: 1px solid var(--rule); max-width: 980px;
  display: block;
}
.spec-row {
  display: grid; grid-template-columns: 220px 1fr;
  gap: 32px; padding: 22px 16px 22px 0;
  border-bottom: 1px solid var(--rule);
  font-size: 0.98rem; line-height: 1.65;
  position: relative; overflow: hidden;
  transition: padding-left 0.28s ease, background 0.28s ease;
}
.spec-row::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px; background: var(--red);
  transform: scaleY(0); transform-origin: top;
  transition: transform 0.32s ease;
}
.spec-row:hover { padding-left: 18px; background: rgba(200,50,0,0.025); }
.spec-row:hover::before { transform: scaleY(1); }
.spec-row dt {
  font-family: var(--mono); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--red);
  padding-top: 2px; font-weight: 700;
}
.spec-row dd { color: var(--ink); }
.spec-row dd code { white-space: nowrap; }

section.dark .spec-list { border-top-color: rgba(255,255,255,0.1); }
section.dark .spec-row {
  border-bottom-color: rgba(255,255,255,0.08); color: rgba(255,255,255,0.7);
}
section.dark .spec-row:hover { background: rgba(255,255,255,0.025); }
section.dark .spec-row dd { color: rgba(255,255,255,0.78); }

/* ── MONO LINK ── */
.mono-link {
  display: inline-block;
  font-family: var(--mono); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--ink); text-decoration: none;
  border-bottom: 1px solid var(--ink); padding-bottom: 3px;
  transition: color 0.2s, border-color 0.2s;
}
.mono-link:hover { color: var(--red); border-color: var(--red); }
.mono-link .arrow { display: inline-block; margin-left: 6px; }

/* ── PDF EMBED ── */
.pdf-embed {
  width: 100%; height: 720px; border: 1px solid var(--rule);
  background: var(--ink);
}

/* ── FOOTER ── */
footer { border-top: 1px solid var(--rule); margin-top: 0; }
.footer-inner {
  max-width: 1180px; margin: 0 auto; padding: 24px 60px;
  display: flex; justify-content: space-between; align-items: center;
  gap: 24px;
}
.footer-mono {
  font-family: var(--mono); font-size: 0.6rem;
  color: var(--gray); text-transform: uppercase; letter-spacing: 0.12em;
}
.footer-mono a { color: var(--gray); text-decoration: none; }
.footer-mono a:hover { color: var(--red); }

/* ── RESPONSIVE ── */
@media (max-width: 1000px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .layout-prose-rail { grid-template-columns: 1fr; gap: 32px; }
  .spec-row { grid-template-columns: 140px 1fr; gap: 16px; }
  .stats-row { gap: 28px 40px; }
}
@media (max-width: 760px) {
  .wrap { padding: 0 28px; }
  .nav-inner { padding: 0 28px; }
  .footer-inner { padding: 18px 28px; flex-direction: column; gap: 6px; align-items: flex-start; }
  section { padding: 48px 0; }
  .page-hero { padding: 96px 0 40px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 16px; }
  .spec-row { grid-template-columns: 1fr; gap: 4px; padding: 14px 0; }
  .s-header { margin-bottom: 28px; }
  .nav-meta { display: none; }
  .pdf-embed { height: 480px; }
  .stats-row { gap: 20px 32px; padding-top: 24px; margin-top: 32px; }
}
@media (max-width: 480px) {
  .wrap { padding: 0 20px; }
  .nav-inner { padding: 0 20px; }
  .footer-inner { padding: 16px 20px; }
  .page-hero { padding: 88px 0 32px; }
  .page-title { font-size: clamp(1.5rem, 7vw, 2.2rem); max-width: none; }
  .stat-cell { min-width: 95px; }
}