body {
  margin: 0;
  /* font-family: "Space Grotesk", sans-serif; */
  font-family: Orbitron, sans-serif;
  color: #e7f5ff;
}

.title-wrap {
  position: absolute;
  top: 20vh;
  left: 50%;
  transform: translate(-50%, -50%);
  display: inline-flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  z-index: 3;
  pointer-events: none;
}

@font-face {
  font-family: 'Orbitron';
  src: url('/assets/fonts/Orbitron-VariableFont_wght.woff2')format('woff2');
  font-display: swap;
}

.title {
  position: static;
  text-align: left;
  text-shadow: 
    0 0 3px #fff,
    0 0 6px #00f,
    0 0 12px #fff; 
  font-size: clamp(38px, 6vw, 64px);
  letter-spacing: 0.2em; 
  white-space: nowrap;
  pointer-events: auto;
}

.title:hover {
  text-shadow: 
    0 0 5px #fff,
    0 0 15px #f99, /* 青を少し強める */
    0 0 25px #fff; 
  cursor: pointer; /* マウスを指の形にする */
  transition: 0.3s; /* じわっと光らせる */
}

#neonRing {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  width: 100dvw;
  height: 100dvh;
  z-index: 1;
  pointer-events: auto;
}

#warpLayer {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  width: 100dvw;
  height: 100dvh;
  z-index: 0;
  pointer-events: none;
}

#introView.warp-only .title-wrap,
#introView.warp-only #neonRing,
#introView.warp-only #bgmPanel,
#introView.warp-only #aboutPanel {
  opacity: 0;
  pointer-events: none;
}

#introView.warp-only #warpLayer {
  z-index: 4;
}

#app {
  position: relative;
  width: 100%;
  height: 100%;
}

.view {
  position: fixed;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.6s ease;
  z-index: 0;
}

.view.is-active {
  opacity: 1;
  pointer-events: auto;

.title-sub {
  position: static;
  text-align: right;
  font-size: clamp(8px, 1.8vw, 15px);
  letter-spacing: 0.12em;
  color: rgba(231, 245, 255, 0.68);
  opacity: 0.9;
  transition: opacity 1.2s ease;
  pointer-events: none;
  font-family: Orbitron, sans-serif;
}

.title-sub.is-fading {
  opacity: 0;
}
  z-index: 2;
}

.intro-cube-label {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(8px, 1.5vw, 12px);
  letter-spacing: 0.14em;
  color: rgba(231, 245, 255, 0.8);
  opacity: 0;
  z-index: 4;
  pointer-events: none;
  transition: opacity 0.8s ease;
  transition-delay: 0.25s;
}

.intro-cube-label.is-visible {
  opacity: 0.85;
  transition-delay: 0s;
}

#introView.warp-only {
  z-index: 3;
  pointer-events: none;
}

#bgmPanel {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 12px 16px;
  background: rgba(15, 24, 32, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  z-index: 3;
  transition: opacity 0.35s ease;
  pointer-events: auto;
}

#bgmPanel.panel-hidden {
  opacity: 0;
  pointer-events: none;
}

#bgmPanel.panel-dim {
  opacity: 0.35;
}

#bgmPanel .control {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}

#bgmPanel .control label {
  justify-self: start;
}

#bgmPanel .control > span {
  justify-self: end;
  text-align: right;
}

.bgm-hint {
  margin-top: 8px;
  font-size: 11px;
  letter-spacing: 0.02em;
  opacity: 0;
  transition: opacity 0.3s ease;
  text-align: left;
}

.bgm-hint.is-visible {
  opacity: 0.85;
}

#introView #aboutPanel {
  position: fixed;
  right: 16px;
  top: auto;
  bottom: 16px;
  z-index: 6;
  pointer-events: auto;
}

#introView #aboutPanel .about-toggle {
  pointer-events: auto;
}

#introView #aboutPanel .about-content {
  top: auto;
  bottom: calc(100% + 8px);
}

#introView #aboutPanel.about-open .about-content {
  max-height: 320px;
  opacity: 0.95;
  transform: translateY(0);
  overflow: auto;
}