/* The band under the homepage stage: three hosts feeding one governance
 * pipeline.
 *
 * The point it has to make visually is that the terminal above is *one* host
 * among several, and that all of them land in the same four checks. So the
 * hosts sit on a rail, their lanes converge, and a single pip runs the pipeline
 * — the same shape whichever card you look at.
 *
 * No palette of its own. Every colour here is a `--sp-stage-*` token declared
 * on `body.home-split-body` in `home-stage.css`, so the band cannot drift away
 * from the glass panes above it. Buttons come from `header-core.css`
 * (`a.cta-button`, `a.download-badge`) rather than being restyled here.
 *
 * The pips move on `transform` and `opacity` alone; the only other animated
 * property is the fill of five 9px nodes, which is not worth a compositor
 * layer. All of it is paused until `home-scene.js` adds `.is-running`, and off
 * entirely under reduced motion. */

.home-scene {
  border-top: 1px solid var(--sp-stage-glass-border);
  position: relative;
}

/* The shared stage scrim (home-stage.css) is at its lightest in the middle of
   the viewport, which — because the video layer is fixed — is exactly what sits
   behind this band while it is being read. A local scrim in the same ink, light
   at the seam so the field still reads as continuous with the hero. */
.home-scene::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  backdrop-filter: blur(10px) saturate(1.05);
  -webkit-backdrop-filter: blur(10px) saturate(1.05);
  background: linear-gradient(180deg,
    oklch(0.12 0.012 55 / 0.50) 0%,
    oklch(0.12 0.012 55 / 0.78) 22%,
    oklch(0.12 0.012 55 / 0.82) 100%);
}

.home-scene-inner {
  position: relative;
  z-index: 1;
  max-width: 1600px;
  margin: 0 auto;
  padding: var(--sp-space-10, 4rem) var(--sp-space-6) var(--sp-space-8);
}

/* ── heading ────────────────────────────────────────────────────────────── */

.scene-eyebrow {
  margin: 0 0 var(--sp-space-2);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sp-stage-text-muted);
}

.scene-title {
  margin: 0 0 var(--sp-space-3);
  font-family: var(--sp-font-brand, inherit);
  font-size: clamp(1.6rem, 3.4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--sp-stage-text);
}

.scene-deck {
  margin: 0 0 var(--sp-space-5);
  max-width: 62ch;
  font-size: 1.08rem;
  line-height: 1.6;
  color: var(--sp-stage-text-dim);
}

/* The claim in six words. A list because it is one — and separators drawn as
   borders rather than typed between the items, so the markup stays clean and
   the wrapped rows never start with a stray bullet. */
.scene-verbs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-space-2) 0;
  list-style: none;
  margin: 0 0 var(--sp-space-6);
  padding: 0;
  font-family: var(--sp-font-brand, inherit);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sp-stage-text-muted);
}

.scene-verbs li {
  padding: 0 var(--sp-space-4);
  border-left: 1px solid var(--sp-stage-glass-border);
}

.scene-verbs li:first-child {
  padding-left: 0;
  border-left: 0;
}

/* The last verb is the whole point of the other five. */
.scene-verbs .scene-verb--own {
  color: var(--sp-stage-glow);
}

/* ── the host rail ──────────────────────────────────────────────────────── */

.scene-hosts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}

.scene-host {
  display: flex;
  flex-direction: column;
  gap: var(--sp-space-3);
  padding: var(--sp-space-5);
  background: var(--sp-stage-glass);
  border: 1px solid var(--sp-stage-glass-border);
  border-radius: var(--sp-radius-md, 10px);
  backdrop-filter: blur(var(--sp-stage-blur));
  -webkit-backdrop-filter: blur(var(--sp-stage-blur));
  /* Opacity, not colour: dimming a sibling must not change what the lit card
     looks like, and `opacity` is the only property that composites cheaply. */
  transition: opacity 220ms ease, border-color 220ms ease, transform 220ms ease;
}

/* One card at a time is "the one you are looking at". Pointer and keyboard
   both set `data-active` on the section — see home-scene.js — so the same rule
   serves a hover and a tab stop. */
.home-scene[data-active] .scene-host {
  opacity: 0.42;
}

.home-scene[data-active="web"] .scene-host[data-host="web"],
.home-scene[data-active="claude-code"] .scene-host[data-host="claude-code"],
.home-scene[data-active="codex"] .scene-host[data-host="codex"] {
  opacity: 1;
  border-color: var(--sp-stage-rim);
  transform: translateY(-2px);
}

/* The same lit edge the terminal and the account pane carry — see the
   `--sp-stage-specular` rule in home-stage.css. Without it these cards are
   translucent rectangles sitting under two panes that are visibly glass, and
   the band reads as a different material bolted on below. */
.scene-host,
.scene-pipeline {
  position: relative;
}

.scene-host::before,
.scene-pipeline::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  border-radius: inherit;
  padding: 1px;
  background: var(--sp-stage-specular);
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}

.scene-host-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-space-2);
}

.scene-host-name {
  margin: 0;
  font-family: var(--sp-font-brand, inherit);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--sp-stage-text);
}

.scene-host-tag {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sp-stage-text-muted);
}

.scene-host-role {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--sp-stage-text-dim);
}

/* How this host arrives, not how you set it up. Setup instructions belong with
   the download, not on a card whose job is to say "this one too". */
.scene-host-via {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-space-2);
  margin-top: auto;
  padding: var(--sp-space-3);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--sp-stage-text-muted);
}

/* A short lead-in rule, so the label reads as an inbound connection rather
   than a caption. */
.scene-host-via::before {
  content: '';
  width: 1.25rem;
  height: 1px;
  background: var(--sp-stage-rim);
}

/* The web agent has no command to run — it is the thing above the fold. */
.scene-host-live {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-space-2);
  margin-top: auto;
  padding: var(--sp-space-3);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--sp-stage-glow);
}

.scene-host-live::before {
  content: '';
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 0 currentColor;
  animation: scene-pulse 2.4s ease-out infinite;
  animation-play-state: paused;
}

.home-scene.is-running .scene-host-live::before {
  animation-play-state: running;
}

@keyframes scene-pulse {
  0% { box-shadow: 0 0 0 0 oklch(0.62 0.19 47 / 0.55); }
  70% { box-shadow: 0 0 0 0.55rem oklch(0.62 0.19 47 / 0); }
  100% { box-shadow: 0 0 0 0 oklch(0.62 0.19 47 / 0); }
}