/* Natural vertical scroll with section-linked motion. */

:root {
  --hero-out: 0;
  --globe-out: 0;
  --hero-chrome-out: 0;
}

html {
  scroll-behavior: auto;
  scroll-padding-top: 0;
}

.nav {
  position: fixed;
  top: calc(var(--nav-compact) * 8px);
  left: 0;
  right: 0;
  margin: 0 auto;
}

.nav-links a {
  position: relative;
}
.nav-links a.is-here {
  color: var(--ink);
}
.nav-links a.is-here::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(-6px + var(--nav-compact) * 3px);
  height: 1px;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}

.deck {
  position: relative;
  z-index: 1;
}

.slide {
  min-height: 100svh;
  padding: 84px 20px 48px;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}

.wipe {
  display: none;
}

/* ---------- pager ---------- */
.pager {
  position: fixed;
  right: max(16px, env(safe-area-inset-right));
  top: 50%;
  transform: translateY(-50%);
  z-index: 18;
  display: grid;
  gap: 4px;
}
.pager a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  padding: 6px 0;
  transition: color 0.25s var(--ease);
}
.pager a i {
  width: 7px;
  height: 7px;
  border: 1px solid currentColor;
  border-radius: 50%;
  flex-shrink: 0;
  transition: background 0.25s, box-shadow 0.25s, transform 0.35s var(--ease);
}
.pager a span {
  opacity: 0.35;
  transform: translateX(-4px);
  transition: opacity 0.25s, transform 0.35s var(--ease);
}
.pager a:hover,
.pager a:focus-visible {
  color: var(--ink);
}
.pager a:hover span,
.pager a:focus-visible span,
.pager a.is-here span {
  opacity: 1;
  transform: none;
}
.pager a.is-here {
  color: var(--cyan);
}
.pager a.is-here i {
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  transform: scale(1.15);
}
.pager a:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: 4px;
}

/* ---------- cover: pin in place, content draws over it ---------- */
.hero.slide {
  position: sticky;
  top: 0;
  z-index: 0;
  height: 100svh;
  min-height: 100svh;
  overflow: hidden;
  display: block;
  padding: 0;
}
.hero-orbit-wrap {
  transform-origin: 50% 46%;
  opacity: calc(1 - var(--globe-out));
  transform:
    translate3d(0, calc(var(--globe-out) * 5vh), 0)
    scale(calc(1 - var(--globe-out) * 0.16));
}
.hero-orbit-wrap.is-away .hero-orbit,
.hero-orbit-wrap.is-away .hero-orbit-hit,
.hero-orbit-wrap.is-past .hero-orbit,
.hero-orbit-wrap.is-past .hero-orbit-hit {
  pointer-events: none;
}
.hero-orbit-wrap.is-past {
  visibility: hidden;
}

.hero.slide .orbit-inspect {
  opacity: 0;
  transform: translate3d(0, calc(var(--hero-chrome-out) * -12px - 10px), 0);
}
.hero.slide .orbit-inspect.is-open {
  opacity: calc(1 - var(--hero-chrome-out));
  transform: translate3d(0, calc(var(--hero-chrome-out) * -12px), 0);
}
.hero.slide .hero-status {
  opacity: calc(1 - var(--hero-chrome-out));
  transform: translateX(-50%) translate3d(0, calc(var(--hero-chrome-out) * 14px), 0);
}
.hero.slide.is-leaving .hero-status,
.hero.slide.is-covered .orbit-inspect,
.hero.slide.is-covered .hero-status {
  pointer-events: none;
}
.hero.slide.is-covered .orbit-inspect,
.hero.slide.is-covered .hero-status {
  visibility: hidden;
}

html.is-scrolling .hero-orbit-wrap {
  will-change: opacity, transform;
}

/* ---------- drawer: sheet that slides up over the cover ---------- */
.drawer {
  position: relative;
  z-index: 2;
  background:
    radial-gradient(920px 420px at 50% 0%, rgba(93, 255, 200, 0.04), transparent 55%),
    linear-gradient(180deg, rgba(11, 13, 22, 0.72), rgba(8, 10, 18, 0.64));
  border-radius: clamp(22px, 4vw, 36px) clamp(22px, 4vw, 36px) 0 0;
  box-shadow:
    0 -1px 0 rgba(233, 255, 246, 0.14),
    0 -32px 90px rgba(0, 0, 0, 0.58);
}

/* ---------- topic pages fill the remaining viewport ---------- */
.slide .sec-head {
  width: min(1100px, 100%);
  margin: 0 auto 22px;
  flex-shrink: 0;
}
.slide .sec-head h2 {
  font-size: clamp(1.7rem, 3.6vw, 2.7rem);
  margin-bottom: 10px;
}
.slide .sec-lead {
  font-size: 13px;
  line-height: 1.65;
}

.telemetry.slide {
  height: 100svh;
  min-height: 100svh;
  padding: 0;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(11, 13, 22, 0.92), rgba(8, 10, 18, 0.9));
}
.telemetry.slide .telemetry-console {
  flex: 1;
  width: 100%;
  height: 100%;
  min-height: 0;
  margin: 0;
}
.telemetry-split {
  flex: 1;
  min-height: 0;
}

.stack.slide {
  --svc-card-w: min(56vw, 680px);
  --svc-card-h: min(52vh, 430px);
  --svc-pad: max(24px, calc((100vw - var(--svc-card-w)) / 2));
  --svc-scale: 0.84;
  min-height: 100svh;
  padding-left: 0;
  padding-right: 0;
  overflow: hidden;
}
.stack.slide .sec-head {
  width: min(1100px, calc(100% - 40px));
}

.svc-stage {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 100%;
}
.svc-rail {
  position: relative;
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}
.svc-rail .card {
  -webkit-user-drag: none;
  user-drag: none;
}
.svc-rail.is-drag {
  scroll-snap-type: none;
}
.svc-rail.is-drag .cards {
  will-change: transform;
}
.svc-rail.is-drag .card {
  transition: none;
}
.svc-rail.is-drag .card.glass {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.svc-rail.is-drag .card:hover::after {
  animation: none;
}
.svc-rail:focus-visible {
  outline: none;
}
.svc-rail::-webkit-scrollbar { display: none; }

.stack.slide .cards {
  flex: none;
  min-height: 0;
  width: max-content;
  height: var(--svc-card-h);
  margin: 0;
  padding: 28px var(--svc-pad) 36px;
  gap: clamp(18px, 2.8vw, 40px);
  align-items: stretch;
}

.stack.slide .card {
  flex: 0 0 var(--svc-card-w);
  width: var(--svc-card-w);
  height: 100%;
  min-height: 0;
  padding: 22px 24px 28px;
  gap: 10px;
  border-radius: 22px;
  overflow: visible;
  scroll-snap-align: center;
  scroll-snap-stop: always;
  z-index: 1;
  opacity: calc(0.48 + var(--focus) * 0.52);
  transform:
    translateY(calc(var(--lift) + (1 - var(--focus)) * 18px))
    scale(calc(var(--svc-scale) + var(--focus) * (1 - var(--svc-scale))))
    rotateX(var(--rx))
    rotateY(var(--ry));
  background:
    radial-gradient(ellipse 70% 64% at 78% 62%, var(--card-glow), transparent 64%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    0 28px 70px rgba(0, 0, 0, calc(0.28 + var(--focus) * 0.28)),
    0 0 80px var(--card-glow);
}
.stack.slide .card.is-focus { z-index: 3; }
.stack.slide .card:hover {
  border-color: var(--stroke-2);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    0 28px 70px rgba(0, 0, 0, calc(0.28 + var(--focus) * 0.28)),
    0 0 80px var(--card-glow);
}
.stack.slide .card:nth-child(1) { --card-glow: rgba(93, 255, 200, 0.28); }
.stack.slide .card:nth-child(2) { --card-glow: rgba(126, 182, 255, 0.26); }
.stack.slide .card:nth-child(3) { --card-glow: rgba(255, 200, 87, 0.2); }
.stack.slide .card:nth-child(4) { --card-glow: rgba(182, 255, 232, 0.22); }
.stack.slide .card:nth-child(5) { --card-glow: rgba(255, 78, 205, 0.22); }
.stack.slide .card:nth-child(6) { --card-glow: rgba(126, 182, 255, 0.22); }
.stack.slide .card:nth-child(7) { --card-glow: rgba(255, 200, 87, 0.22); }
.stack.slide .card:nth-child(8) { --card-glow: rgba(93, 255, 200, 0.18); }

.stack.slide .card::after {
  border-radius: inherit;
  clip-path: inset(0 round 22px);
}

.stack.slide .card h3 {
  position: absolute;
  left: 0.06em;
  bottom: -0.14em;
  margin: 0;
  font-size: clamp(2.2rem, 5.4vw, 4.5rem);
  line-height: 0.78;
  letter-spacing: -0.05em;
  white-space: nowrap;
  pointer-events: none;
  text-shadow: 0 10px 28px rgba(0, 0, 0, 0.55);
}
.stack.slide .card .mono {
  margin: 0;
  min-width: 0;
  font-size: 13px;
  position: relative;
  z-index: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.stack.slide .card p:not(.mono) { display: none; }
.stack.slide .card-top {
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  min-height: 22px;
  position: relative;
  z-index: 1;
}
.stack.slide .ascii-ico {
  position: absolute;
  right: 9%;
  top: 46%;
  transform: translateY(-50%);
  font-size: clamp(4.2rem, 9vw, 7.8rem);
  opacity: 0.16;
  pointer-events: none;
  z-index: 0;
}
.stack.slide .card-go { display: none; }

.svc-meter {
  flex-shrink: 0;
  width: min(240px, 42vw);
  height: 2px;
  margin: 8px auto 4px;
  border-radius: 99px;
  background: rgba(233, 255, 246, 0.16);
  position: relative;
  overflow: hidden;
}
.svc-meter i {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 28%;
  border-radius: inherit;
  background: var(--ink);
  box-shadow: 0 0 10px rgba(233, 255, 246, 0.35);
  transform: translateX(0);
  will-change: transform, width;
}

.projects.slide .proj-list {
  flex: 1;
  min-height: 0;
  width: min(1100px, 100%);
  margin: 0 auto;
  align-content: start;
}
.projects.slide .proj {
  padding: 20px 22px;
}

.operator.slide .op-grid {
  flex: 1;
  min-height: 0;
  width: min(1100px, 100%);
  margin: 0 auto;
  align-content: start;
}
.operator.slide .foot {
  flex-shrink: 0;
  padding: 16px 0 8px;
}

/* ---------- scroll-linked rise for section contents ---------- */
@keyframes deckRise {
  from { opacity: 0; transform: translate3d(0, 36px, 0); }
  to { opacity: 1; transform: none; }
}

@supports (animation-timeline: view()) {
  .slide:not(.hero) .sec-head {
    animation: deckRise 1s var(--ease) both;
    animation-timeline: view();
    animation-range: entry 0% entry 42%;
  }
  .telemetry-console {
    animation: deckRise 1.05s var(--ease) both;
    animation-timeline: view();
    animation-range: entry 8% cover 32%;
  }
  .svc-stage,
  .projects.slide .proj,
  .operator.slide .op-card {
    animation: deckRise 0.9s var(--ease) both;
    animation-timeline: view();
    animation-range: entry 0% cover 28%;
  }
  .projects.slide .proj:nth-child(2),
  .operator.slide .op-card:nth-child(2) { animation-range: entry 6% cover 32%; }
  .projects.slide .proj:nth-child(3),
  .operator.slide .op-card:nth-child(3) { animation-range: entry 12% cover 36%; }

  .reveal {
    animation: none;
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 700px) {
  .pager { display: none; }
  .slide {
    min-height: 100svh;
    overflow: visible;
    padding: 84px 16px 36px;
  }
  .hero.slide {
    height: 100svh;
    min-height: 100svh;
    overflow: hidden;
  }
  .telemetry.slide {
    height: 100svh;
    min-height: 100svh;
    padding: 0;
    overflow: hidden;
  }
  .telemetry.slide .telemetry-console {
    flex: 1;
    width: 100%;
    height: 100%;
    min-height: 0;
  }
  .stack.slide {
    --svc-card-w: min(68vw, 420px);
    --svc-card-h: min(42vh, 320px);
    --svc-pad: max(20px, calc((100vw - var(--svc-card-w)) / 2));
    --svc-scale: 0.92;
  }
  .stack.slide .card {
    padding: 18px 18px 24px;
  }
  .stack.slide .card h3 {
    font-size: clamp(1.8rem, 8vw, 2.8rem);
  }
  .stack.slide .card-go { top: 18px; right: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-orbit-wrap,
  .hero.slide .orbit-inspect,
  .hero.slide .hero-status {
    transform: none !important;
  }
  .brand-reveal-stage { transform: none !important; will-change: auto; }
  .slide:not(.hero) .sec-head,
  .telemetry-console,
  .svc-stage,
  .projects.slide .proj,
  .operator.slide .op-card {
    animation: none !important;
  }
  .stack.slide .card {
    opacity: 1;
    transform: none;
  }
}