/* Acheron — rank 5.
   Industrial hell. Chrome Roman capitals, red neon edge, one cyan split. */

[data-level="acheron"] {
  --font-display: "Marcellus", "Trajan Pro", "Times New Roman", serif;
  --rule-colour: color-mix(in srgb, var(--accent) 30%, transparent);
}

[data-level="acheron"] .hero__title {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  /* chrome face, red neon edge, a cold sliver of cyan on the other side */
  background: linear-gradient(
    172deg,
    #ffffff 0%, #e8dede 24%, #8d7b7d 52%, #f4ecec 68%, #6d5c5e 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  /* Chrome on dark brick needs a dark rim before the neon edge reads.
     Tight shadows build the outline, then the red and cyan offsets. */
  filter:
    drop-shadow(0 0 2px #050203)
    drop-shadow(0 0 5px #050203)
    drop-shadow(0 0 12px rgba(5, 2, 3, 0.95))
    drop-shadow(0.03em 0 0 var(--accent))
    drop-shadow(-0.022em 0 0 color-mix(in srgb, var(--accent2) 75%, transparent))
    drop-shadow(0 0 2.6rem color-mix(in srgb, var(--accent) 65%, transparent));
}

[data-level="acheron"] .level-hero__rank {
  color: #ff6a5a;
}

[data-level="acheron"] .voice__hook {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 400;
}

/* descend set-piece ------------------------------------------------------ */

.sig--descend {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-content: center;
  overflow: hidden;
  border-top: var(--rule) solid var(--rule-colour);
  background:
    radial-gradient(
      ellipse 70% 50% at 50% 8%,
      color-mix(in srgb, var(--accent) 20%, transparent),
      transparent 70%
    ),
    linear-gradient(180deg, #150a0c 0%, #080405 78%);
}

/* Walls falling upward past the camera. */
.desc__wall {
  position: absolute;
  left: -6%;
  right: -6%;
  pointer-events: none;
  background-image:
    linear-gradient(#3a1a1d 2px, transparent 2px),
    linear-gradient(90deg, #3a1a1d 2px, transparent 2px);
  background-size: 160px 80px, 160px 80px;
  opacity: 0.55;
}

.desc__wall--far {
  top: -30%;
  height: 160%;
  background-size: 96px 48px, 96px 48px;
  opacity: 0.3;
}

.desc__wall--mid {
  top: -20%;
  height: 150%;
  opacity: 0.42;
}

.desc__wall--near {
  top: -10%;
  height: 140%;
  background-size: 240px 120px, 240px 120px;
  opacity: 0.3;
}

/* Chains streaking past, faster than the walls. */
.desc__chain {
  position: absolute;
  top: -40%;
  width: 26px;
  height: 180%;
  background-image: radial-gradient(
    ellipse 11px 22px at 50% 22px,
    transparent 0 6px,
    #241012 6px 11px,
    transparent 11px
  );
  background-size: 26px 52px;
  pointer-events: none;
  opacity: 0.9;
}

.desc__chain--1 { left: 12%; }
.desc__chain--2 { left: 38%; opacity: 0.6; scale: 0.8; }
.desc__chain--3 { right: 18%; }
.desc__chain--4 { right: 40%; opacity: 0.55; scale: 0.75; }

/* Spike bands crossing the shaft. */
.desc__teeth {
  position: absolute;
  left: -6%;
  right: -6%;
  height: 68px;
  background-image: linear-gradient(
    135deg, transparent 46%, #0a0506 46%
  ),
  linear-gradient(225deg, transparent 46%, #0a0506 46%);
  background-size: 68px 68px;
  pointer-events: none;
}

.desc__teeth--a { top: 16%; }
.desc__teeth--b { top: 62%; rotate: 180deg; }

.desc__dark {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, #080405 88%);
  pointer-events: none;
}

.desc__copy {
  position: relative;
  z-index: 4;
  text-align: center;
}

.desc__line {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: clamp(2rem, 6.2vw, 5.2rem);
  line-height: 1.06;
  letter-spacing: 0.045em;
  margin: 0 0 var(--space-6);
  color: var(--ink);
  text-shadow: 0 0 2rem #080405, 0 0 3.6rem #080405;
}

.desc__sub {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--muted);
  line-height: 1.7;
  margin-inline: auto;
  text-shadow: 0 0 1.5rem #080405;
}