/* ==========================================================================
   OpenSpec marketing site
   Dark charcoal, phosphor green, technical-drawing bones.
   Display: Anton. Everything else: IBM Plex Mono.
   ========================================================================== */

:root {
  --bg: #0e1210;
  --bg-2: #131816;
  --line: rgba(80, 227, 164, 0.16);
  --line-soft: rgba(80, 227, 164, 0.07);
  --ink: #e6ece8;
  --ink-dim: #8fa098;
  --green: #50e3a4;
  --green-deep: #2a9a6b;
  --mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Menlo, monospace;
  --disp: "Anton", "Arial Narrow", sans-serif;
  --pad: clamp(20px, 5vw, 72px);
  --maxw: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--green); color: #08130d; }

a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- film grain ---------- */
.grain {
  position: fixed;
  inset: -100px;
  z-index: 40;
  pointer-events: none;
  opacity: 0.07;
  /* background-image injected by JS (generated noise tile) */
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  cursor: crosshair;
  /* blueprint grid */
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px),
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 24px 24px, 24px 24px, 120px 120px, 120px 120px;
}
.hero::after {
  /* vignette so the grid dies off at the edges */
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(120% 90% at 50% 40%, transparent 40%, rgba(8, 11, 9, 0.9) 100%);
}

#blueprint {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero__frame {
  position: relative;
  z-index: 3;
  flex: 1;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: none;
  padding: clamp(18px, 3vw, 34px) var(--pad);
}

.hero__topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.wordmark { display: flex; flex-direction: column; gap: 2px; }
.wordmark__name {
  font-family: var(--disp);
  font-size: 22px;
  letter-spacing: 0.14em;
  color: var(--ink);
}
.wordmark__dwg {
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--ink-dim);
}

.hero__copy {
  margin-top: auto;
  margin-bottom: auto;
  max-width: 640px;
  padding-top: 5vh;
}

.hero__title {
  font-family: var(--disp);
  font-weight: 400;
  font-size: clamp(56px, 9.5vw, 132px);
  line-height: 0.98;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}
.hero__title .line {
  display: block;
  overflow: hidden;
  padding-bottom: 0.06em;
}
.hero__title .line__inner {
  display: inline-block;
  transform: translateY(110%);
  animation: rise 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.hero__title .line:nth-child(2) .line__inner { animation-delay: 0.12s; }
.accent { color: var(--green); }
@keyframes rise { to { transform: translateY(0); } }

.hero__sub {
  margin-top: 28px;
  max-width: 470px;
  color: var(--ink-dim);
  font-size: 14px;
  opacity: 0;
  animation: fade 0.9s ease 0.5s forwards;
}
@keyframes fade { to { opacity: 1; } }

.hero__cta {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 28px;
  opacity: 0;
  animation: fade 0.9s ease 0.7s forwards;
}
.hero__hint {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ink-dim);
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.hero__hint::before {
  content: "";
  width: 1px;
  height: 26px;
  background: linear-gradient(var(--green) 30%, transparent 30%);
  background-size: 100% 200%;
  animation: hint 1.8s ease-in-out infinite;
}
@keyframes hint {
  0% { background-position: 0 -26px; }
  60%, 100% { background-position: 0 26px; }
}

.btn {
  display: inline-block;
  white-space: nowrap;
  border: 1px solid var(--green);
  color: var(--green);
  padding: 12px 26px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  position: relative;
  transition: color 0.25s ease;
  background:
    linear-gradient(var(--green) 0 0) left / 0% 100% no-repeat;
  transition: color 0.3s ease, background-size 0.3s ease;
}
.btn:hover {
  color: #08130d;
  background-size: 100% 100%;
  text-decoration: none;
}
.btn--ghost { border-color: var(--line); color: var(--ink-dim); }
.btn--ghost:hover { color: #08130d; background: var(--green); border-color: var(--green); }
.sect__ctarow { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---------- DRO readout ---------- */
.dro {
  position: absolute;
  right: var(--pad);
  bottom: 72px;
  z-index: 3;
  display: flex;
  flex-direction: column;
  gap: 2px;
  border: 1px solid var(--line);
  background: rgba(10, 14, 12, 0.72);
  padding: 10px 14px;
  font-size: 13px;
  min-width: 128px;
  color: var(--green);
  text-shadow: 0 0 8px rgba(80, 227, 164, 0.35);
}
.dro__row { display: flex; justify-content: space-between; gap: 12px; }
.dro__row b { color: var(--ink-dim); font-weight: 500; }
.dro__unit {
  font-size: 9px;
  letter-spacing: 0.3em;
  color: var(--ink-dim);
  align-self: flex-end;
}

/* ---------- cursor crosshair ---------- */
.xhair {
  position: absolute;
  z-index: 2;
  pointer-events: none;
  background: rgba(80, 227, 164, 0.28);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.xhair--h { left: 0; right: 0; height: 1px; }
.xhair--v { top: 0; bottom: 0; width: 1px; }
.hero:hover .xhair { opacity: 1; }

/* ---------- hero baseline strip ---------- */
.hero__dwgname { color: var(--green-deep); }
.hero__baseline {
  position: relative;
  z-index: 3;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px var(--pad);
  border-top: 1px solid var(--line);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--ink-dim);
  background: rgba(14, 18, 16, 0.7);
}

/* ---------- sections ---------- */
.sect {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(90px, 14vh, 150px) var(--pad) 0;
}
.sect:last-of-type { padding-bottom: clamp(90px, 14vh, 150px); }

.sect__title {
  font-family: var(--disp);
  font-weight: 400;
  font-size: clamp(44px, 6.5vw, 88px);
  line-height: 1.02;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  max-width: 900px;
}
.sect__title > span { display: inline-block; }

/* dimension-line underline on the key word */
.dim-word { position: relative; display: inline-block; color: var(--green); }
.dimline {
  position: absolute;
  left: 0; right: 0;
  bottom: -0.28em;
  width: 100%;
  height: 0.22em;
  overflow: visible;
}
.dimline path { stroke: var(--green); fill: none; stroke-width: 2; vector-effect: non-scaling-stroke; }
.dimline__arrow { fill: var(--green); stroke: none; }
.dimline__main, .dimline__ext {
  stroke-dasharray: 400;
  stroke-dashoffset: 400;
  transition: stroke-dashoffset 1.1s cubic-bezier(0.16, 1, 0.3, 1) 0.35s;
}
.dimline__arrow { opacity: 0; transition: opacity 0.4s ease 1.1s; }
.reveal.in .dimline__main, .reveal.in .dimline__ext { stroke-dashoffset: 0; }
.reveal.in .dimline__arrow { opacity: 1; }

.sect__body {
  margin-top: 36px;
  max-width: 620px;
  color: var(--ink-dim);
}
.sect__body p + p { margin-top: 18px; }

.provenance {
  color: var(--ink);
  border-left: 2px solid var(--green);
  padding-left: 16px;
}
.provenance__mark { color: var(--green); margin-right: 6px; }

/* ---------- parts list ---------- */
.plist { margin-top: 8px; }

.plist__cols,
.plist__row {
  display: grid;
  grid-template-columns: 64px 220px 1fr 130px;
  gap: 24px;
  align-items: baseline;
}

.plist__cols {
  font-size: 10px;
  letter-spacing: 0.26em;
  color: var(--ink-dim);
  padding-bottom: 14px;
}
.plist__cols span:last-child { text-align: right; }

.plist__row {
  position: relative;
  padding: 30px 0;
  border-top: 1px solid var(--line);
  transition: background 0.3s ease;
}
.plist__row::before {
  /* animated top border that draws in on reveal */
  content: "";
  position: absolute;
  top: -1px; left: 0;
  height: 1px;
  width: 100%;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 1.1s cubic-bezier(0.16, 1, 0.3, 1);
  opacity: 0.6;
}
.plist__row.in::before { transform: scaleX(1); }
.plist__row:hover { background: linear-gradient(90deg, rgba(80, 227, 164, 0.05), transparent 70%); }

.plist__no {
  font-size: 13px;
  color: var(--green);
}
.plist__name {
  font-family: var(--disp);
  font-weight: 400;
  font-size: clamp(22px, 2.6vw, 32px);
  letter-spacing: 0.04em;
  color: var(--ink);
}
.plist__desc { font-size: 13.5px; color: var(--ink-dim); max-width: 520px; }
.plist__iface {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--green-deep);
  text-align: right;
}

/* ---------- closing contact ---------- */
.sect--close .sect__body {
  margin-top: 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: flex-start;
}

/* ---------- footer ---------- */
.foot {
  border-top: 1px solid var(--line);
  background: var(--bg-2);
}
.foot__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 26px var(--pad);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.foot__mark {
  font-family: var(--disp);
  font-size: 15px;
  letter-spacing: 0.14em;
}
.foot__meta { font-size: 12px; color: var(--ink-dim); }
.foot__sep { margin: 0 8px; }

/* ---------- reveal engine ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s ease, transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.in { opacity: 1; transform: none; }
/* staggered words in titles */
.sect__title.reveal > span {
  opacity: 0;
  transform: translateY(0.5em);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.sect__title.reveal.in > span { opacity: 1; transform: none; }
.sect__title.reveal.in > span:nth-child(2) { transition-delay: 0.08s; }
.sect__title.reveal.in > span:nth-child(3) { transition-delay: 0.16s; }

/* ---------- small screens ---------- */
@media (max-width: 860px) {
  .plist__cols { display: none; }
  .plist__row {
    grid-template-columns: 40px 1fr;
    grid-template-areas:
      "no name"
      "no desc"
      "no iface";
    gap: 8px 16px;
  }
  .plist__no { grid-area: no; }
  .plist__name { grid-area: name; }
  .plist__desc { grid-area: desc; }
  .plist__iface { grid-area: iface; text-align: left; margin-top: 6px; }

  .dro { display: none; }
  .xhair { display: none; }
  .hero { cursor: default; }
  .hero__baseline {
    flex-wrap: wrap;
    row-gap: 4px;
    font-size: 9px;
    letter-spacing: 0.16em;
  }
  .hero__copy { max-width: none; }
  .wordmark__dwg { display: none; }
  .revblock { padding: 6px 10px; gap: 10px; font-size: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  .hero__hint::before { animation: none; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero__title .line__inner { animation: none; transform: none; }
  .hero__sub, .hero__cta { animation: none; opacity: 1; }
  .reveal, .sect__title.reveal > span {
    opacity: 1; transform: none; transition: none;
  }
  .plist__row::before { transform: none; transition: none; }
  .dimline__main, .dimline__ext { stroke-dashoffset: 0; transition: none; }
  .dimline__arrow { opacity: 1; transition: none; }
}

/* ==========================================================================
   Demo bench (demo.html)
   ========================================================================== */

.benchpage {
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 24px 24px;
  background-attachment: fixed;
}

.benchbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: clamp(18px, 3vw, 34px) var(--pad) 0;
}
.benchbar .wordmark { text-decoration: none; }
.benchbar .wordmark:hover .wordmark__name { color: var(--green); }
.benchbar__mail {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding-top: 6px;
}

.bench {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(40px, 7vh, 80px) var(--pad) clamp(90px, 12vh, 140px);
}

.bench__title {
  font-family: var(--disp);
  font-weight: 400;
  font-size: clamp(52px, 8vw, 110px);
  line-height: 1;
  text-transform: uppercase;
}
.bench__title .line { display: block; overflow: hidden; padding-bottom: 0.06em; }
.bench__title .line__inner {
  display: inline-block;
  transform: translateY(110%);
  animation: rise 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.bench__sub {
  margin-top: 20px;
  max-width: 480px;
  color: var(--ink-dim);
  font-size: 14px;
  opacity: 0;
  animation: fade 0.9s ease 0.4s forwards;
}

/* ---------- query strip ---------- */
.query {
  margin-top: 46px;
  display: flex;
  align-items: baseline;
  gap: 18px;
  flex-wrap: wrap;
  border: 1px solid var(--line);
  background: rgba(10, 14, 12, 0.7);
  padding: 14px 18px;
  font-size: 13px;
}
.query__label { color: var(--green); letter-spacing: 0.22em; font-size: 11px; }
.query__text { color: var(--ink); }
.query__result { margin-left: auto; color: var(--ink-dim); font-size: 11px; letter-spacing: 0.14em; }

/* ---------- record chips ---------- */
.chips { display: flex; gap: 12px; margin-top: 14px; flex-wrap: wrap; }
.chip {
  font-family: var(--mono);
  display: flex;
  flex-direction: column;
  gap: 3px;
  align-items: flex-start;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink-dim);
  padding: 10px 16px;
  cursor: pointer;
  transition: border-color 0.25s ease, color 0.25s ease, background 0.25s ease;
}
.chip__sup { font-size: 10px; letter-spacing: 0.18em; }
.chip__mpn { font-size: 13px; color: var(--ink); }
.chip:hover { border-color: var(--green-deep); }
.chip.is-on { border-color: var(--green); background: rgba(80, 227, 164, 0.06); }
.chip.is-on .chip__sup { color: var(--green); }

/* ---------- mode tabs ---------- */
.modes {
  display: flex;
  gap: 0;
  margin-top: 40px;
  border-bottom: 1px solid var(--line);
}
.mode {
  font-family: var(--disp);
  font-size: clamp(18px, 2.2vw, 26px);
  letter-spacing: 0.06em;
  background: none;
  border: none;
  color: var(--ink-dim);
  padding: 10px 26px 12px;
  cursor: pointer;
  position: relative;
  transition: color 0.25s ease;
}
.mode::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: var(--green);
  transform: scaleX(0);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.mode:hover { color: var(--ink); }
.mode.is-on { color: var(--ink); }
.mode.is-on::after { transform: scaleX(1); }

.panel { padding-top: 40px; }
.panel__note {
  margin-top: 22px;
  max-width: 560px;
  color: var(--ink-dim);
  font-size: 12.5px;
}

/* ---------- HUMAN: spec sheet ---------- */
.sheet {
  border: 1px solid var(--line);
  background: rgba(10, 14, 12, 0.55);
  padding: clamp(20px, 3vw, 36px);
}
.sheet__head {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}
.sheet__kicker { font-size: 10px; letter-spacing: 0.22em; color: var(--ink-dim); text-transform: uppercase; }
.sheet__mpn {
  font-family: var(--disp);
  font-weight: 400;
  font-size: clamp(30px, 4vw, 52px);
  letter-spacing: 0.03em;
  color: var(--green);
  margin-top: 6px;
}
.sheet__desc { max-width: 480px; color: var(--ink-dim); font-size: 13px; margin-top: 10px; }
.sheet__supplier { display: flex; flex-direction: column; gap: 6px; min-width: 260px; }
.sheet__suplabel { font-size: 10px; letter-spacing: 0.22em; color: var(--ink-dim); }
.sheet__supname { font-size: 15px; }
.sheet__cage { display: flex; flex-direction: column; gap: 2px; margin-top: 6px; }
.cage-yes { color: var(--green); font-size: 13px; letter-spacing: 0.08em; }
.cage-detail { color: var(--ink); font-size: 11.5px; }
.cage-src { color: var(--ink-dim); font-size: 10.5px; }
.cage-no { color: var(--ink-dim); font-size: 12px; font-style: italic; }

.sheet__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 0 36px;
  margin-top: 8px;
}
.spec {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 9px 0;
  border-bottom: 1px dashed rgba(80, 227, 164, 0.14);
  font-size: 12.5px;
  opacity: 0;
  animation: fade 0.5s ease forwards;
  animation-delay: calc(var(--i) * 22ms);
}
.spec__k { color: var(--ink-dim); }
.spec__v { color: var(--ink); text-align: right; }

.sheet__assets { display: flex; gap: 22px; flex-wrap: wrap; margin-top: 24px; font-size: 12px; letter-spacing: 0.08em; }
.sheet__prov {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
  overflow-wrap: anywhere;
}

/* ---------- side by side ---------- */
.compare { margin-top: 54px; }
.compare__title {
  font-family: var(--disp);
  font-weight: 400;
  font-size: clamp(22px, 2.6vw, 32px);
  letter-spacing: 0.05em;
  margin-bottom: 18px;
}
.compare__table { border: 1px solid var(--line); }
.crow {
  display: grid;
  grid-template-columns: 150px 1fr 1fr;
  gap: 16px;
  padding: 9px 16px;
  font-size: 12.5px;
  border-bottom: 1px solid rgba(80, 227, 164, 0.08);
}
.crow:last-child { border-bottom: none; }
.crow--head { background: rgba(80, 227, 164, 0.05); padding: 14px 16px; }
.crow--head .crow__v { color: var(--green); font-size: 11px; letter-spacing: 0.14em; }
.crow--head .crow__v i { color: var(--ink); font-style: normal; letter-spacing: 0; }
.crow__l { color: var(--ink-dim); font-size: 10.5px; letter-spacing: 0.18em; align-self: center; }
.crow__v { color: var(--ink); }
.compare__note { margin-top: 14px; font-size: 12px; color: var(--ink-dim); max-width: 560px; }

/* ---------- API terminal ---------- */
.term { border: 1px solid var(--line); background: #0a0e0c; }
.term__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
}
.term__dot { width: 9px; height: 9px; border-radius: 50%; background: rgba(80, 227, 164, 0.25); }
.term__note { margin-left: 10px; font-size: 10.5px; letter-spacing: 0.14em; color: var(--ink-dim); }
.term__copy {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  background: none;
  border: 1px solid var(--line);
  color: var(--green);
  padding: 5px 12px;
  cursor: pointer;
  transition: border-color 0.25s ease;
}
.term__copy:hover { border-color: var(--green); }
.term__body {
  margin: 0;
  padding: 18px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
  max-height: 520px;
  overflow: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.term__prompt { color: var(--green); }
.term__body .tk { color: var(--green); font-style: normal; }
.term__body .tv { color: var(--ink); font-style: normal; }
.term__body code { color: var(--ink-dim); }

/* ---------- AI exchange ---------- */
.chat { border: 1px solid var(--line); background: rgba(10, 14, 12, 0.55); padding: clamp(18px, 3vw, 30px); }
.chat__tag {
  display: block;
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--ink-dim);
  margin-bottom: 22px;
}
.chat__msg { display: flex; gap: 18px; align-items: baseline; }
.chat__msg + .chat__msg { margin-top: 22px; padding-top: 22px; border-top: 1px dashed rgba(80, 227, 164, 0.14); }
.chat__who { flex: 0 0 52px; font-size: 10px; letter-spacing: 0.18em; color: var(--ink-dim); }
.chat__msg--agent .chat__who { color: var(--green); }
.chat__msg p { font-size: 13.5px; max-width: 640px; }
.chat__msg--user p { color: var(--ink-dim); }
.chat__msg--agent { flex-wrap: wrap; }
.chat__cites {
  flex-basis: 100%;
  display: flex;
  gap: 18px;
  margin-top: 14px;
  margin-left: 70px;
  font-size: 11.5px;
  letter-spacing: 0.06em;
}

@media (max-width: 860px) {
  .crow { grid-template-columns: 92px 1fr 1fr; gap: 10px; padding: 9px 10px; font-size: 11px; }
  .crow__l { font-size: 9px; }
  .sheet__grid { grid-template-columns: 1fr; }
  .mode { padding: 10px 18px 12px; }
  .query__result { margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .bench__title .line__inner { animation: none; transform: none; }
  .bench__sub { animation: none; opacity: 1; }
  .spec { animation: none; opacity: 1; }
  .mode::after { transition: none; }
}