/* The Forge — HTML/CSS mechanical gallery
   V3 chamber pass: linked motion frozen; visible refractory, soot, and mottled furnace heat. */

#builds {
  position: relative;
  overflow: hidden;
  padding: 104px 0 92px;
  background:
    radial-gradient(ellipse 60% 30% at 50% 58%, rgba(217,79,30,.055), transparent 72%),
    #0d0c0c;
  border-top: 1px solid var(--border);
}
.builds-header { margin-bottom: 42px; }
.builds-header-copy { max-width: 560px; }
.builds-header-copy h2 { margin-bottom: 10px; }
.builds-header-copy p {
  margin-top: 18px;
  color: var(--muted);
  font-size: .95rem;
  font-weight: 300;
  line-height: 1.7;
}

.forge-gallery {
  width: min(100%, 900px);
  margin-inline: auto;
}
.forge-machine {
  --frame: clamp(12px, 1.7vw, 20px);
  --lock-shift: clamp(8px, 1vw, 12px);
  --forge-cycle: 2.2s;
  position: relative;
  isolation: isolate;
  perspective: 1400px;
}
.forge-shell {
  position: relative;
  aspect-ratio: 16 / 9;
  padding: var(--frame);
  overflow: hidden;
  border: 1px solid #302d29;
  border-radius: 5px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.035), transparent 12%),
    linear-gradient(90deg, #11100f 0%, #211f1c 7%, #121110 13%, #171513 87%, #25221e 94%, #0e0d0c 100%);
  box-shadow:
    inset 0 1px rgba(255,255,255,.05),
    inset 0 -2px 5px rgba(0,0,0,.75),
    0 22px 55px -30px rgba(0,0,0,.95);
  transform: translateZ(0);
}
.forge-shell::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 9;
  pointer-events: none;
  opacity: .48;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='3' seed='9'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .045 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}
.forge-shell::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  border-radius: inherit;
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.025),
    inset 0 0 32px 8px rgba(0,0,0,.62);
}

/* The furnace is a controlled 2D illusion behind the project panel.
   V3 makes the chamber texture intentionally legible at normal display size. */
.forge-chamber {
  position: absolute;
  inset: calc(var(--frame) + 2px);
  z-index: 0;
  overflow: hidden;
  border-radius: 3px;
  background:
    linear-gradient(90deg, rgba(0,0,0,.94), transparent 13%, transparent 87%, rgba(0,0,0,.94)),
    linear-gradient(180deg, rgba(0,0,0,.76), transparent 17%, transparent 78%, rgba(0,0,0,.90)),
    radial-gradient(ellipse 62% 76% at 50% 58%, #57170b 0%, #2a0d08 42%, #100706 68%, #050303 88%);
  box-shadow:
    inset 0 0 30px 8px rgba(0,0,0,.88),
    inset 0 0 0 1px rgba(151,65,31,.20);
}
.forge-chamber::before {
  content: '';
  position: absolute;
  inset: -20% 7%;
  z-index: 1;
  opacity: .09;
  filter: blur(14px) saturate(1.3) contrast(1.08);
  transform: scale(.86);
  background:
    radial-gradient(ellipse 23% 31% at 48% 57%, rgba(255,250,219,.98) 0 8%, rgba(255,198,100,.96) 15%, rgba(255,112,36,.88) 30%, rgba(207,55,18,.70) 48%, rgba(95,19,9,.38) 68%, transparent 81%),
    radial-gradient(ellipse 58% 76% at 50% 55%, rgba(244,76,21,.52), rgba(92,14,6,.30) 53%, transparent 76%);
}
.forge-chamber::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 3;
  opacity: .10;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg,
      transparent 0 10.8%,
      rgba(255,119,45,.20) 11.1% 11.8%,
      rgba(34,8,4,.86) 12.2% 13.1%,
      transparent 13.6% 25%),
    radial-gradient(ellipse 78% 22% at 50% 100%, rgba(255,88,25,.72), transparent 72%);
  filter: blur(3px);
}
.forge-chamber-texture {
  position: absolute;
  inset: 0;
  z-index: 2;
  opacity: .16;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(0,0,0,.66), transparent 15%, transparent 85%, rgba(0,0,0,.66)),
    linear-gradient(180deg, rgba(0,0,0,.38), transparent 20%, transparent 76%, rgba(0,0,0,.55)),
    url("../images/forge-chamber-refractory.svg") center / cover no-repeat;
  background-blend-mode: multiply, multiply, normal;
  filter: contrast(1.34) saturate(1.24) brightness(.88);
  transform: scale(1.015);
  transform-origin: 50% 58%;
}
.forge-chamber-texture::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 42% 48% at 50% 59%, rgba(255,184,82,.22), rgba(210,61,19,.10) 38%, transparent 69%),
    radial-gradient(circle at 24% 30%, rgba(0,0,0,.62), transparent 21%),
    radial-gradient(circle at 78% 68%, rgba(0,0,0,.55), transparent 24%);
  mix-blend-mode: screen;
  opacity: .58;
}

.forge-chamber-throat {
  position: absolute;
  inset: 19% 14% 16%;
  z-index: 2;
  opacity: .10;
  pointer-events: none;
  border-radius: 42% 42% 35% 35%;
  background:
    radial-gradient(ellipse at 50% 56%, rgba(255,247,206,.95) 0 5%, rgba(255,185,84,.90) 13%, rgba(240,83,24,.72) 34%, rgba(108,20,8,.26) 62%, transparent 77%),
    repeating-radial-gradient(ellipse at 48% 55%, rgba(255,156,65,.14) 0 3px, rgba(42,8,4,.18) 7px 13px);
  box-shadow:
    0 0 22px rgba(255,99,29,.38),
    0 0 56px rgba(207,48,13,.30),
    inset 0 0 28px rgba(45,6,2,.42);
  filter: blur(1.3px) saturate(1.35) contrast(1.12);
  transform: scale(.84);
}
.forge-side-heat,
.forge-floor-heat {
  position: absolute;
  z-index: 1;
  pointer-events: none;
  opacity: .10;
}
.forge-side-heat {
  top: 7%; bottom: 7%; width: 11%;
  background:
    radial-gradient(circle at 30% 22%, rgba(5,2,2,.92) 0 11%, transparent 27%),
    radial-gradient(circle at 74% 68%, rgba(8,3,2,.86) 0 15%, transparent 34%),
    radial-gradient(circle at 42% 88%, rgba(90,20,8,.72) 0 13%, transparent 34%),
    repeating-linear-gradient(0deg, transparent 0 16%, rgba(12,4,3,.84) 16.5% 19.5%, rgba(126,37,15,.34) 20% 21%, transparent 21.5% 36%),
    radial-gradient(ellipse at center, rgba(255,211,126,.74), rgba(240,84,25,.58) 28%, rgba(104,24,9,.48) 56%, rgba(12,5,4,.18) 78%);
  background-blend-mode: multiply, multiply, overlay, multiply, screen;
  filter: blur(1px) contrast(1.28) saturate(1.14);
}
.forge-side-heat.left { left: calc(var(--frame) - 2px); }
.forge-side-heat.right { right: calc(var(--frame) - 2px); }
.forge-floor-heat {
  left: 12%; right: 12%; bottom: calc(var(--frame) - 5px); height: 11%;
  background:
    radial-gradient(circle at 25% 58%, rgba(7,3,2,.82) 0 10%, transparent 24%),
    radial-gradient(circle at 72% 44%, rgba(11,4,3,.76) 0 13%, transparent 29%),
    repeating-linear-gradient(90deg, transparent 0 15%, rgba(20,5,3,.74) 15.4% 16.5%, transparent 17% 31%),
    radial-gradient(ellipse at center, rgba(255,222,143,.80), rgba(231,72,22,.58) 38%, rgba(88,17,7,.34) 63%, transparent 80%);
  background-blend-mode: multiply, multiply, multiply, screen;
  filter: blur(1.2px) contrast(1.24) saturate(1.12);
}

.forge-aperture {
  position: absolute;
  inset: var(--frame);
  z-index: 3;
  overflow: hidden;
  border: 1px solid #2c2925;
  border-radius: 3px;
  background: transparent;
  box-shadow:
    inset 0 0 0 2px rgba(0,0,0,.75),
    inset 0 0 22px 5px rgba(0,0,0,.68);
  perspective: 1100px;
  transform-style: preserve-3d;
}
.forge-aperture::before,
.forge-aperture::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  z-index: 7;
  height: clamp(8px, 1.35vw, 14px);
  pointer-events: none;
  background: linear-gradient(180deg, #292724, #11100f 62%, #070707);
  border-block: 1px solid rgba(255,255,255,.035);
  box-shadow: 0 4px 9px rgba(0,0,0,.65);
}
.forge-aperture::before { top: 0; }
.forge-aperture::after { bottom: 0; transform: rotate(180deg); }

.forge-panel-deck {
  position: absolute;
  inset: clamp(10px, 1.45vw, 16px);
  z-index: 4;
  overflow: hidden;
  transform-style: preserve-3d;
  transform-origin: 50% 50%;
  contain: layout paint;
  will-change: transform;
}
/* Both images live on one rigid vertical track. The track moves once, so the
   cards maintain exactly one-panel spacing and cannot drift apart. */
.forge-panel-track {
  position: absolute;
  left: 0;
  right: 0;
  top: -100%;
  height: 300%;
  z-index: 1;
  transform-style: preserve-3d;
  transform-origin: 50% 50%;
  will-change: transform;
  backface-visibility: hidden;
}
.forge-project-panel {
  position: absolute;
  left: 0;
  right: 0;
  height: 33.333333%;
  padding: 0;
  overflow: hidden;
  border: 1px solid #32302c;
  border-radius: 2px;
  background: #090909;
  box-shadow:
    0 0 0 3px #111,
    0 0 0 4px rgba(255,255,255,.035),
    0 10px 24px rgba(0,0,0,.78);
  backface-visibility: hidden;
  transform: translate3d(0,0,0);
  will-change: opacity, filter;
}
.forge-project-panel--current { top: 33.333333%; }
.forge-machine.direction-forward .forge-project-panel--next { top: 0; }
.forge-machine.direction-reverse .forge-project-panel--next { top: 66.666667%; }
.forge-project-panel picture,
.forge-project-panel img { display: block; width: 100%; height: 100%; }
.forge-project-panel img {
  object-fit: cover;
  object-position: var(--image-position, center center);
  filter: saturate(.98) contrast(1.03);
}
.forge-project-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(0,0,0,.08), transparent 18%, transparent 78%, rgba(0,0,0,.2)),
    linear-gradient(90deg, rgba(0,0,0,.13), transparent 7%, transparent 93%, rgba(0,0,0,.13));
}
.forge-project-panel::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  opacity: 0;
  background:
    radial-gradient(ellipse 16% 80% at 0% 50%, rgba(255,129,47,.48), transparent 72%),
    radial-gradient(ellipse 16% 80% at 100% 50%, rgba(255,129,47,.48), transparent 72%),
    linear-gradient(0deg, rgba(255,77,21,.30), transparent 18%);
  mix-blend-mode: screen;
}
.forge-project-panel--next { visibility: hidden; }

/* Four restrained locks. They read as hardware, not the subject. */
.forge-lock {
  position: absolute;
  z-index: 12;
  width: clamp(28px, 4.4vw, 46px);
  height: clamp(10px, 1.35vw, 15px);
  border: 1px solid #171614;
  border-radius: 2px;
  background: linear-gradient(180deg, #46423d 0%, #282521 42%, #151412 100%);
  box-shadow: inset 0 1px rgba(255,255,255,.08), 0 3px 7px rgba(0,0,0,.72);
  will-change: transform;
}
.forge-lock.tl, .forge-lock.tr { top: calc(var(--frame) - 4px); }
.forge-lock.bl, .forge-lock.br { bottom: calc(var(--frame) - 4px); }
.forge-lock.tl, .forge-lock.bl { left: calc(var(--frame) + 5%); }
.forge-lock.tr, .forge-lock.br { right: calc(var(--frame) + 5%); }

.forge-machine-tag {
  position: absolute;
  z-index: 13;
  top: 7px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(232,224,213,.33);
  font-family: var(--font-cond);
  font-size: clamp(.48rem, .7vw, .62rem);
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
  pointer-events: none;
}

/* One 2.2-second linked cycle: unlock, retract, index, drive home, lock. */
.forge-machine.is-transitioning .forge-shell { animation: forgeShellCycle var(--forge-cycle) linear both; }
.forge-machine.is-transitioning .forge-chamber::before { animation: forgeCoreCycle var(--forge-cycle) ease-in-out both; }
.forge-machine.is-transitioning .forge-chamber::after { animation: forgeRibsCycle var(--forge-cycle) ease-in-out both; }
.forge-machine.is-transitioning .forge-chamber-texture { animation: forgeTextureCycle var(--forge-cycle) ease-in-out both; }
.forge-machine.is-transitioning .forge-chamber-throat { animation: forgeThroatCycle var(--forge-cycle) ease-in-out both; }
.forge-machine.is-transitioning .forge-side-heat,
.forge-machine.is-transitioning .forge-floor-heat { animation: forgeHeatLeak var(--forge-cycle) ease-in-out both; }
.forge-machine.is-transitioning .forge-panel-deck { animation: forgeDeckCycle var(--forge-cycle) cubic-bezier(.33,.02,.18,1) both; }
.forge-machine.is-transitioning .forge-project-panel::after { animation: forgePanelHeat var(--forge-cycle) ease-in-out both; }
.forge-machine.is-transitioning .forge-project-panel--next { visibility: visible; }
.forge-machine.is-transitioning .forge-lock.tl,
.forge-machine.is-transitioning .forge-lock.bl { animation: lockLeft var(--forge-cycle) ease-in-out both; }
.forge-machine.is-transitioning .forge-lock.tr,
.forge-machine.is-transitioning .forge-lock.br { animation: lockRight var(--forge-cycle) ease-in-out both; }
.forge-machine.is-transitioning.direction-forward .forge-panel-track {
  animation: forgeTrackForward var(--forge-cycle) cubic-bezier(.34,.03,.16,1) both;
}
.forge-machine.is-transitioning.direction-reverse .forge-panel-track {
  animation: forgeTrackReverse var(--forge-cycle) cubic-bezier(.34,.03,.16,1) both;
}

@keyframes forgeShellCycle {
  0%, 81% { transform: translate3d(0,0,0); }
  87% { transform: translate3d(0,1px,0); }
  90% { transform: translate3d(0,-1px,0); }
  94%,100% { transform: translate3d(0,0,0); }
}
@keyframes forgeCoreCycle {
  0%, 11%, 100% { opacity: .13; transform: scale(.86); filter: blur(14px) saturate(1.3) contrast(1.08); }
  28% { opacity: .38; }
  43%, 70% { opacity: .78; transform: scale(1.03); filter: blur(11px) saturate(1.55) contrast(1.16); }
  86% { opacity: .24; }
}
@keyframes forgeRibsCycle {
  0%, 12%, 100% { opacity: .15; }
  38%, 70% { opacity: .62; }
  87% { opacity: .14; }
}
@keyframes forgeTextureCycle {
  0%, 12%, 100% { opacity: .16; transform: scale(1.015) translate3d(0,0,0); filter: contrast(1.34) saturate(1.24) brightness(.88); }
  32% { opacity: .48; }
  45%, 70% { opacity: .86; transform: scale(1.025) translate3d(0,.6%,0); filter: contrast(1.48) saturate(1.38) brightness(1.06); }
  86% { opacity: .24; }
}
@keyframes forgeThroatCycle {
  0%, 13%, 100% { opacity: .10; transform: scale(.84); }
  36% { opacity: .56; }
  48%, 70% { opacity: .92; transform: scale(1.01); }
  86% { opacity: .16; }
}
@keyframes forgeHeatLeak {
  0%, 12%, 100% { opacity: .10; }
  34%, 70% { opacity: .54; }
  87% { opacity: .14; }
}
@keyframes forgeDeckCycle {
  0%, 13%, 91%, 100% { transform: translate3d(0,0,0) scale(1); }
  29%, 73% { transform: translate3d(0,0,-92px) scale(.935); }
  83% { transform: translate3d(0,0,-15px) scale(.99); }
}
@keyframes forgePanelHeat {
  0%, 17%, 100% { opacity: 0; }
  39%, 72% { opacity: .68; }
  89% { opacity: .10; }
}
@keyframes lockLeft {
  0%, 10%, 88%, 100% { transform: translate3d(0,0,0); }
  24%, 76% { transform: translate3d(calc(var(--lock-shift) * -1),0,0); }
}
@keyframes lockRight {
  0%, 10%, 88%, 100% { transform: translate3d(0,0,0); }
  24%, 76% { transform: translate3d(var(--lock-shift),0,0); }
}
/* The whole strip advances as a single rigid assembly. No independent panel
   curves means no changing gap and no apparent download/paint lag. */
@keyframes forgeTrackForward {
  0%, 29% { transform: translate3d(0,0,0) rotateX(0deg); }
  38% { transform: translate3d(0,2.2%,0) rotateX(-1.2deg); }
  58% { transform: translate3d(0,28.8%,0) rotateX(-5.5deg); }
  70%,100% { transform: translate3d(0,33.333333%,0) rotateX(0deg); }
}
@keyframes forgeTrackReverse {
  0%, 29% { transform: translate3d(0,0,0) rotateX(0deg); }
  38% { transform: translate3d(0,-2.2%,0) rotateX(1.2deg); }
  58% { transform: translate3d(0,-28.8%,0) rotateX(5.5deg); }
  70%,100% { transform: translate3d(0,-33.333333%,0) rotateX(0deg); }
}

.forge-readout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: end;
  padding: 22px 2px 0;
}
.forge-meta {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-bottom: 8px;
  font-family: var(--font-cond);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.forge-index { color: var(--ember); }
.forge-status { color: #77716a; }
.forge-status[data-phase="heating"],
.forge-status[data-phase="indexing"] { color: #e07a3c; }
.forge-readout h3 { margin: 0; font-size: clamp(1.5rem, 3vw, 2.35rem); }
.forge-caption {
  max-width: 56ch;
  margin-top: 8px;
  color: var(--muted);
  font-size: .94rem;
  font-weight: 300;
  line-height: 1.6;
}
.forge-controls { display: flex; gap: 8px; align-items: center; }
.forge-control {
  min-width: 43px;
  height: 43px;
  display: inline-grid;
  place-items: center;
  border: 1px solid #37332f;
  border-radius: 3px;
  background: #171513;
  color: #ddd5ca;
  font-family: var(--font-cond);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background .2s ease, opacity .2s ease;
}
.forge-control:hover:not(:disabled) { border-color: var(--ember); color: #fff; background: #211815; }
.forge-control:focus-visible { outline: 2px solid var(--ember); outline-offset: 3px; }
.forge-control:disabled { opacity: .42; cursor: default; }
.forge-control svg { width: 16px; height: 16px; }
.forge-control.reset { padding-inline: 15px; }

.forge-progress {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(0, 1fr);
  gap: 5px;
  margin-top: 17px;
}
.forge-progress button {
  height: 3px;
  padding: 0;
  border: 0;
  background: #302d29;
  cursor: pointer;
  transition: background .2s ease, transform .2s ease;
}
.forge-progress button[aria-current="true"] { background: var(--ember); transform: scaleY(1.7); }
.forge-progress button:focus-visible { outline: 2px solid var(--ember); outline-offset: 4px; }

@media (max-width: 720px) {
  #builds { padding: 78px 0 72px; }
  .builds-header { margin-bottom: 30px; }
  .forge-gallery { width: 100%; }
  .forge-machine { --frame: 10px; }
  .forge-panel-deck { inset: 9px; }
  .forge-aperture::before, .forge-aperture::after { height: 8px; }
  .forge-readout { grid-template-columns: 1fr; gap: 18px; padding-top: 18px; }
  .forge-controls { justify-content: flex-start; }
  .forge-control { height: 42px; min-width: 42px; }
  .forge-machine-tag { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .forge-machine.is-transitioning .forge-shell,
  .forge-machine.is-transitioning .forge-chamber::before,
  .forge-machine.is-transitioning .forge-chamber::after,
  .forge-machine.is-transitioning .forge-chamber-texture,
  .forge-machine.is-transitioning .forge-chamber-throat,
  .forge-machine.is-transitioning .forge-side-heat,
  .forge-machine.is-transitioning .forge-floor-heat,
  .forge-machine.is-transitioning .forge-panel-deck,
  .forge-machine.is-transitioning .forge-panel-track,
  .forge-machine.is-transitioning .forge-project-panel::after,
  .forge-machine.is-transitioning .forge-lock { animation: none !important; }
  .forge-machine.is-transitioning .forge-project-panel--current { visibility: hidden; }
  .forge-machine.is-transitioning .forge-project-panel--next {
    visibility: visible;
    top: 33.333333%;
    opacity: 1;
    transform: translate3d(0,0,0);
  }
}