/* 深海ダイブ演出の表示をまとめる。
   hero.css の後に読み込む。 */
/* Dive */
.dive {
  position: relative;
  background: var(--abyss);
  isolation: isolate;
}
.dive-stage {
  position: relative;
  overflow: clip;
  padding: var(--section-space) var(--gutter);
  background:
    radial-gradient(circle at 50% 0%, rgb(143 216 240 / 0.24), transparent 42%),
    var(--deep);
}
.motion .dive-stage.is-animated {
  height: 100svh;
  padding: 0;
  background-color: var(--surface);
}
.dive-rays {
  position: absolute;
  z-index: 0;
  top: -30%;
  right: -14%;
  bottom: 26%;
  left: -14%;
  opacity: 0.82;
  mix-blend-mode: screen;
  background:
    linear-gradient(104deg, transparent 27%, rgb(255 255 255 / 0.3) 42%, transparent 49%),
    linear-gradient(82deg, transparent 38%, rgb(143 216 240 / 0.24) 50%, transparent 57%);
  pointer-events: none;
}
.dive-vignette {
  position: absolute;
  z-index: 5;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 44%, transparent 26%, rgb(5 11 24 / 0.2) 72%, rgb(5 11 24 / 0.6) 100%),
    linear-gradient(0deg, rgb(5 11 24 / 0.34), transparent 42%);
}
.depth-scale {
  position: absolute;
  z-index: 7;
  top: 0;
  bottom: 0;
  left: clamp(0.8rem, 2.2vw, 2rem);
  display: none;
  width: 2.9rem;
  opacity: 0.46;
  pointer-events: none;
}
.motion .is-animated .depth-scale { display: block; }
.depth-scale::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 1.5rem;
  background: repeating-linear-gradient(to bottom, rgb(242 250 255 / 0.55) 0 1px, transparent 1px 2.3rem);
  -webkit-mask: linear-gradient(90deg, #000, transparent);
  mask: linear-gradient(90deg, #000, transparent);
}
.depth-scale span {
  position: absolute;
  left: 0;
  color: rgb(242 250 255 / 0.66);
  font-family: var(--mono);
  font-size: 0.52rem;
  letter-spacing: 0.08em;
  transform: translateY(-50%);
}
.depth-scale span:nth-child(1) { top: 8%; }
.depth-scale span:nth-child(2) { top: 24%; }
.depth-scale span:nth-child(3) { top: 42%; }
.depth-scale span:nth-child(4) { top: 62%; }
.depth-scale span:nth-child(5) { top: 82%; }
.dive-snow {
  position: absolute;
  z-index: 2;
  inset: 0;
  pointer-events: none;
}
.dive-snow i {
  position: absolute;
  top: var(--y);
  left: var(--x);
  width: var(--s);
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgb(242 250 255 / var(--a));
  box-shadow: 0 0 9px rgb(77 232 255 / 0.35);
}
.dive-jellies {
  position: absolute;
  z-index: 1;
  inset: 0;
  pointer-events: none;
}
.dive-jelly {
  position: absolute;
  top: var(--y);
  left: var(--x);
  width: var(--s);
  aspect-ratio: 0.8;
  border-radius: 52% 52% 35% 35%;
  border: 1px solid rgb(77 232 255 / 0.28);
  opacity: var(--o);
  filter: blur(var(--b));
  box-shadow: inset 0 0 1.5rem rgb(77 232 255 / 0.14), 0 0 2rem rgb(77 232 255 / 0.12);
}
.dive-jelly::after {
  content: "";
  position: absolute;
  top: 76%;
  right: 16%;
  bottom: -58%;
  left: 16%;
  border-right: 1px solid rgb(77 232 255 / 0.28);
  border-left: 1px solid rgb(77 232 255 / 0.28);
  border-radius: 0 0 50% 50%;
}
.dive-phases {
  position: relative;
  z-index: 8;
}
.dive-phase {
  max-width: 38rem;
  margin-top: 4rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--line);
  background: rgb(5 11 24 / 0.84);
}
.dive-phase:first-child { margin-top: 0; }
.motion .is-animated .dive-phases {
  position: absolute;
  z-index: 8;
  inset: 0;
  display: grid;
  place-items: center;
  padding-inline: var(--gutter);
}
.motion .is-animated .dive-phase {
  position: absolute;
  margin: 0;
  opacity: 0;
  visibility: hidden;
}
/* 最終フェーズは顔アップと重ならないよう左下へ退避 */
.motion .is-animated .dive-phase:last-child {
  left: var(--gutter);
  right: auto;
  top: auto;
  bottom: clamp(2.5rem, 9vh, 5.5rem);
}
.phase-depth {
  display: block;
  color: var(--glow-cyan);
  font-family: var(--mono);
  font-size: clamp(1.4rem, 3.3vw, 2.3rem);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.08em;
  text-shadow: 0 0 12px var(--glow-cyan), 0 0 28px rgb(77 232 255 / 0.36);
}
.phase-copy {
  margin-top: 1rem;
  font-size: clamp(1.15rem, 2.6vw, 1.7rem);
  font-weight: 800;
  line-height: 1.55;
  letter-spacing: 0.06em;
  text-wrap: balance;
}
.depth-counter {
  position: relative;
  z-index: 9;
  margin-bottom: 2.5rem;
  color: var(--foam);
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.motion .is-animated .depth-counter {
  position: absolute;
  top: 50%;
  right: clamp(1rem, 3vw, 2.8rem);
  margin: 0;
  transform: translateY(-50%);
}
.depth-counter small {
  display: block;
  color: rgb(242 250 255 / 0.56);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
}
.depth-value {
  display: block;
  margin-top: 0.3rem;
  font-size: clamp(1.25rem, 3.8vw, 2.2rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  text-shadow: 0 0 12px var(--glow-cyan), 0 0 28px rgb(77 232 255 / 0.35);
}
.depth-rail {
  position: absolute;
  top: calc(100% + 1rem);
  right: 0;
  width: 1px;
  height: 4.5rem;
  background: rgb(242 250 255 / 0.18);
  transform-origin: top;
}
.depth-rail i {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(var(--glow-cyan), var(--glow-purple));
  box-shadow: 0 0 12px var(--glow-cyan), 0 0 28px rgb(77 232 255 / 0.28);
  transform: scaleY(0);
  transform-origin: top;
}
.dive-face {
  position: relative;
  z-index: 3;
  margin-top: 4rem;
  overflow: hidden;
  aspect-ratio: 3 / 2;
}
.dive-face::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, transparent 36%, rgb(5 11 24 / 0.42) 80%, var(--abyss) 100%);
  pointer-events: none;
}
.motion .is-animated .dive-face {
  position: absolute;
  z-index: 3;
  inset: 0;
  margin: 0;
  aspect-ratio: auto;
  opacity: 0;
  visibility: hidden;
}
.motion .is-animated .dive-face img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.station-lockup {
  position: relative;
  z-index: 9;
  margin-top: 2rem;
  text-align: center;
}
.motion .is-animated .station-lockup {
  position: absolute;
  right: var(--gutter);
  bottom: clamp(2rem, 7vh, 4.8rem);
  left: var(--gutter);
  margin: 0;
  opacity: 0;
  visibility: hidden;
}
.station-lockup small {
  display: block;
  color: var(--glow-cyan);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
}
.station-lockup strong {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--mono);
  font-size: clamp(1.35rem, 4.2vw, 2.6rem);
  line-height: 1.2;
  letter-spacing: 0.16em;
  text-shadow: 0 0 12px var(--glow-cyan), 0 0 28px var(--glow-cyan);
}