/* ============================================================================
   VIVARIUM — OBSERVE (full-screen specimen observation overlay)
   ========================================================================== */

.observe {
  position: fixed; inset: 0; z-index: var(--z-observe);
  display: grid; place-items: center;
  padding: clamp(1rem, 0.5rem + 3vw, 3.5rem);
  visibility: hidden; opacity: 0;
  transition: opacity var(--d-mid) var(--e-soft), visibility var(--d-mid);
}
.observe.is-open { visibility: visible; opacity: 1; }

.observe__backdrop {
  position: absolute; inset: 0;
  /* flat high-opacity fill instead of a full-viewport backdrop blur: the embedded
     site scrolls on top of this, and re-sampling a 14px blur every frame the iframe
     moved was the single heaviest GPU cost during observe. */
  background: oklch(6% 0.01 250 / 0.93);
}

.observe__chamber {
  position: relative;
  width: min(1320px, 100%);
  height: min(86svh, 860px);
  display: grid;
  grid-template-columns: 1fr clamp(240px, 24vw, 340px);
  gap: clamp(0.75rem, 0.4rem + 1.5vw, 1.5rem);
  transform: scale(0.965); opacity: 0;
  transition: transform var(--d-slow) var(--e-out), opacity var(--d-mid) var(--e-soft);
}
.observe.is-open .observe__chamber { transform: scale(1); opacity: 1; }

/* glass */
.observe__glass {
  position: relative; border-radius: 6px; overflow: hidden;
  background: var(--void-deep);
  box-shadow:
    inset 0 0 0 1px oklch(80% 0.145 214 / 0.28),
    inset 0 0 60px oklch(80% 0.145 214 / 0.06),
    0 50px 140px -50px oklch(80% 0.12 214 / 0.4);
}
.observe__rim {
  position: absolute; inset: 0; border-radius: 6px; pointer-events: none; z-index: 4;
  box-shadow: inset 0 0 0 1px oklch(80% 0.145 214 / 0.4);
}
.observe__screen { position: absolute; inset: 0; background: var(--void-deep); overflow: hidden; }
.observe__screen iframe { width: 100%; height: 100%; border: 0; display: block; background: var(--void-deep); }

.observe__scan {
  position: absolute; inset: 0; pointer-events: none; z-index: 3;
  background: repeating-linear-gradient(0deg,
    oklch(80% 0.05 220 / 0.28) 0px, oklch(80% 0.05 220 / 0.28) 1px,
    transparent 2px, transparent 3px);
  opacity: var(--scan-opacity); mix-blend-mode: soft-light;
}

/* power-on boot overlay */
.observe__boot {
  position: absolute; inset: 0; z-index: 5; pointer-events: none;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: clamp(1rem, 0.6rem + 1.5vw, 2rem);
  gap: 0.2em;
  font-family: var(--f-mono); font-size: var(--t-micro); letter-spacing: 0.18em;
  color: var(--live); line-height: 1.9;
  background: linear-gradient(0deg, oklch(8% 0.01 250 / 0.95), oklch(8% 0.01 250 / 0.6) 40%, oklch(8% 0.01 250 / 0.2));
  opacity: 1; transition: opacity var(--d-mid) var(--e-soft);
}
.observe__boot.is-clear { opacity: 0; }
.observe__boot .ok { color: var(--live); }

/* readout panel */
.observe__panel {
  display: flex; flex-direction: column; gap: var(--sp-2);
  padding: clamp(1rem, 0.6rem + 1vw, 1.6rem);
  border: 1px solid var(--line); border-radius: 5px;
  background: oklch(15% 0.012 250 / 0.6);
  backdrop-filter: blur(8px);
  overflow-y: auto;
}
.observe__panel .op-eyebrow { font-size: var(--t-micro); letter-spacing: 0.28em; color: var(--amber); text-shadow: var(--glow-amber); }
.observe__panel .op-name {
  font-family: var(--f-display); font-weight: 700; font-size: clamp(1.8rem, 1.2rem + 2vw, 2.8rem);
  line-height: 0.9; color: var(--ink); letter-spacing: -0.01em;
  text-shadow: 0 0 40px oklch(80% 0.145 214 / 0.2);
}
.observe__panel .op-class { font-size: var(--t-micro); letter-spacing: 0.22em; color: var(--ink-soft); text-transform: uppercase; }
.observe__panel .op-note { font-size: var(--t-body); color: var(--ink-mute); line-height: 1.6; padding: var(--sp-1) 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.observe__panel .op-vitals { display: grid; grid-template-columns: auto 1fr; gap: 0.45em 1rem; }
.observe__panel .op-vitals dt { font-size: var(--t-micro); letter-spacing: 0.16em; color: var(--ink-faint); }
.observe__panel .op-vitals dd { font-size: var(--t-micro); color: var(--ink-soft); font-variant-numeric: tabular-nums; text-align: right; }
.observe__panel .op-vitals dd .ok { color: var(--live); }
.observe__panel .op-hint { margin-top: auto; font-size: var(--t-micro); letter-spacing: 0.14em; color: var(--ink-faint); line-height: 1.7; }
.observe__panel .op-hint b { color: var(--ink-soft); }

/* close / reseal */
.observe__close {
  position: absolute; top: -2.6rem; right: 0;
  display: inline-flex; align-items: center; gap: 0.7em;
  font-family: var(--f-mono); font-size: var(--t-micro); letter-spacing: 0.22em; color: var(--ink-mute);
  transition: color var(--d-mid);
}
.observe__close span:last-child { color: var(--live); }
.observe__close:hover { color: var(--ink); }

@media (max-width: 820px) {
  .observe__chamber { grid-template-columns: 1fr; grid-template-rows: 1fr auto; height: min(88svh, 900px); }
  .observe__panel { max-height: 32vh; }
  .observe__close { top: -2.3rem; }
}