/* ===== HERO SCROLL CONTAINER ===== */
.hero-scroll {
  position: relative;
  height: 280vh;
}
.hero-sticky {
  position: sticky; top: 0;
  height: 100vh;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(30,58,138,0.10), transparent 55%),
    radial-gradient(ellipse at 80% 70%, rgba(74,222,128,0.04), transparent 55%),
    var(--bg);
}

/* ===== STARFIELD ===== */
.stars { position: absolute; inset: 0; pointer-events: none; }

/* ===== ENGINEERING GRID OVERLAY ===== */
.grid-overlay {
  position: absolute; inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(74,222,128,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74,222,128,0.06) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 85%);
  opacity: 0.8;
  transition: opacity 0.3s;
}
.grid-overlay.off { opacity: 0; }

/* ===== CROSSHAIR ===== */
.crosshair {
  position: absolute; inset: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.crosshair.off { opacity: 0; }
.crosshair::before, .crosshair::after {
  content: ""; position: absolute;
  background: rgba(74,222,128,0.18);
}
.crosshair::before { left: 50%; top: 0; bottom: 0; width: 1px; transform: translateX(-0.5px); }
.crosshair::after  { top: 50%; left: 0; right: 0; height: 1px; transform: translateY(-0.5px); }

/* ===== CORNER TICKS ===== */
.corner-ticks { position: absolute; inset: 24px; pointer-events: none; transition: opacity 0.3s; }
.corner-ticks.off { opacity: 0; }
.corner-ticks .c { position: absolute; width: 18px; height: 18px; border-color: var(--accent); }
.corner-ticks .c.tl { top: 0; left: 0; border-top: 1px solid; border-left: 1px solid; }
.corner-ticks .c.tr { top: 0; right: 0; border-top: 1px solid; border-right: 1px solid; }
.corner-ticks .c.bl { bottom: 0; left: 0; border-bottom: 1px solid; border-left: 1px solid; }
.corner-ticks .c.br { bottom: 0; right: 0; border-bottom: 1px solid; border-right: 1px solid; }

/* ===== CANVAS STAGE ===== */
.stage { position: absolute; inset: 0; display: grid; place-items: center; }
.stage canvas { display: block; width: 100%; height: 100%; }

/* ===== HERO COPY ===== */
.hero-copy {
  position: absolute;
  left: 24px; right: 24px; bottom: 48px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  align-items: end;
  pointer-events: none;
}
.hero-copy > * { pointer-events: auto; }
.hero-copy .kicker {
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
  display: flex; align-items: center; gap: 10px;
}
.hero-copy .kicker .bar { display: inline-block; width: 28px; height: 1px; background: var(--accent); }
.hero-copy .sub {
  color: var(--fg-dim);
  max-width: 480px;
  margin-top: 16px;
  font-size: 13px;
  line-height: 1.6;
}
.hero-copy .mini-readout {
  border: 1px solid var(--line);
  padding: 16px 18px;
  background: rgba(12,16,18,0.6);
  backdrop-filter: blur(8px);
  min-width: 280px;
}
.mini-readout .row { display: flex; justify-content: space-between; padding: 4px 0; font-size: 11.5px; }
.mini-readout .row + .row { border-top: 1px dashed var(--line); }
.mini-readout .row .k { color: var(--fg-dim); text-transform: uppercase; letter-spacing: 0.1em; font-size: 10.5px; }
.mini-readout .row .v { color: var(--fg); font-variant-numeric: tabular-nums; }
@media (max-width: 900px) {
  .hero-copy { grid-template-columns: 1fr; gap: 20px; bottom: 24px; }
  .hero-copy .mini-readout { align-self: start; }
}

/* ===== LEFT TELEMETRY HUD ===== */
.telemetry {
  position: absolute;
  top: 140px; left: 24px;
  display: flex; flex-direction: column; gap: 14px;
  font-size: 11px;
  pointer-events: none;
  transition: opacity 0.3s;
}
.telemetry.off { opacity: 0; }
.telemetry .block {
  border-left: 1px solid var(--accent-dim);
  padding: 6px 12px;
  background: rgba(74,222,128,0.03);
}
.telemetry .label { color: var(--accent); text-transform: uppercase; letter-spacing: 0.12em; font-size: 10px; }
.telemetry .val { color: var(--fg); font-variant-numeric: tabular-nums; font-size: 15px; margin-top: 2px; }
.telemetry .val .u { color: var(--fg-dim); font-size: 10px; margin-left: 4px; }
@media (max-width: 1100px) { .telemetry { display: none; } }

/* ===== RIGHT VITALS / PHASE LIST ===== */
.vitals {
  position: absolute;
  top: 140px; right: 24px;
  width: 240px;
  font-size: 11px;
  pointer-events: none;
  transition: opacity 0.3s;
}
.vitals.off { opacity: 0; }
.vitals .hdr {
  color: var(--fg-dim); text-transform: uppercase; letter-spacing: 0.14em;
  font-size: 10px; margin-bottom: 8px;
  display: flex; justify-content: space-between;
}
.vitals .bar-wrap { height: 4px; background: var(--line); position: relative; overflow: hidden; margin-bottom: 4px; }
.vitals .bar-fill { position: absolute; inset: 0; background: var(--accent); transform-origin: left; transform: scaleX(0); box-shadow: 0 0 6px var(--accent); }
.vitals .bar-tick { color: var(--fg-dimmer); font-size: 9.5px; display: flex; justify-content: space-between; margin-bottom: 14px; }
.vitals .phase-list { border-top: 1px solid var(--line); padding-top: 12px; }
.vitals .phase { display: flex; gap: 8px; padding: 3px 0; color: var(--fg-dimmer); }
.vitals .phase.cur  { color: var(--accent); }
.vitals .phase.done { color: var(--fg-dim); }
.vitals .phase .t   { width: 42px; font-variant-numeric: tabular-nums; }
@media (max-width: 1100px) { .vitals { display: none; } }

/* ===== MECHANISM PICKER ===== */
.mech-picker {
  position: absolute;
  top: 20px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  z-index: 5;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  background: rgba(10,14,12,0.72);
  backdrop-filter: blur(6px);
}
.mech-picker .mp-label {
  padding: 10px 14px;
  color: var(--fg-dimmer);
  border-right: 1px solid var(--line);
  font-family: "JetBrains Mono", monospace;
}
.mech-picker button {
  background: transparent;
  border: none;
  border-right: 1px solid var(--line);
  color: var(--fg-dim);
  padding: 10px 16px;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  cursor: pointer;
  transition: all 0.15s;
  font-family: "JetBrains Mono", monospace;
  position: relative;
}
.mech-picker button:last-child { border-right: none; }
.mech-picker button:hover { color: var(--fg); background: rgba(74,222,128,0.06); }
.mech-picker button.active { color: var(--accent); background: rgba(74,222,128,0.08); }
.mech-picker button.active::before {
  content: '';
  position: absolute;
  top: -1px; left: -1px; right: -1px;
  height: 2px;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}
.mech-picker button .idx { color: var(--fg-dimmer); margin-right: 6px; font-size: 9.5px; }
.mech-picker button.active .idx { color: var(--accent-dim); }
@media (max-width: 760px) {
  .mech-picker { font-size: 9.5px; top: 12px; }
  .mech-picker .mp-label { display: none; }
  .mech-picker button { padding: 8px 10px; }
}

/* ===== SCROLL NUDGE ===== */
.scroll-nudge {
  position: absolute;
  bottom: 14px; left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-dim);
  display: flex; align-items: center; gap: 8px;
  pointer-events: none;
  animation: floaty 2.2s ease-in-out infinite;
}
@keyframes floaty {
  0%,100% { transform: translate(-50%, 0); }
  50%      { transform: translate(-50%, 4px); }
}