/* =============================================================
   SAMEKORO LAB — 実験ノート準備中画面
   ============================================================= */

.experiments-preparing {
  position: relative;
  z-index: 1;
  min-height: calc(100vh - 252px);
}

.experiments-preparing__section {
  display: flex;
  min-height: calc(100vh - 82px);
  align-items: center;
  padding: 142px 0 88px;
}

.experiments-preparing__container {
  display: flex;
  justify-content: center;
}

.experiments-preparing__panel {
  position: relative;
  width: min(100%, 760px);
  padding: clamp(48px, 8vw, 86px) clamp(26px, 7vw, 72px);
  overflow: hidden;
  text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(84, 216, 232, 0.11), transparent 46%),
    linear-gradient(150deg, rgba(16, 42, 69, 0.82), rgba(7, 20, 37, 0.82));
  box-shadow:
    0 26px 80px rgba(0, 0, 0, 0.38),
    inset 0 1px 0 rgba(142, 240, 250, 0.08);
}

.experiments-preparing__panel::before,
.experiments-preparing__panel::after {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  border: 1px solid rgba(84, 216, 232, 0.1);
  border-radius: 50%;
  pointer-events: none;
}

.experiments-preparing__panel::before {
  top: -104px;
  left: -72px;
}

.experiments-preparing__panel::after {
  right: -92px;
  bottom: -112px;
}

.experiments-preparing__signal {
  display: flex;
  min-height: 40px;
  align-items: flex-end;
  justify-content: center;
  gap: 8px;
  margin-bottom: 24px;
}

.experiments-preparing__signal span {
  width: 5px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--cyan-bright), var(--cyan));
  box-shadow: 0 0 14px var(--glow);
  animation: preparing-signal 2.2s ease-in-out infinite;
}

.experiments-preparing__signal span:nth-child(1) {
  height: 18px;
  animation-delay: -0.38s;
}

.experiments-preparing__signal span:nth-child(2) {
  height: 34px;
}

.experiments-preparing__signal span:nth-child(3) {
  height: 24px;
  animation-delay: -0.76s;
}

.experiments-preparing__label {
  color: var(--cyan);
  font: 700 0.75rem var(--font-en);
  letter-spacing: 0.2em;
}

.experiments-preparing__title {
  margin-top: 12px;
  color: var(--text);
  font-size: clamp(2.1rem, 6vw, 3.4rem);
  line-height: 1.3;
  letter-spacing: 0.04em;
}

.experiments-preparing__status {
  margin-top: 22px;
  color: var(--cyan-bright);
  font-size: clamp(1.15rem, 3vw, 1.42rem);
  font-weight: 700;
}

.experiments-preparing__message {
  margin-top: 25px;
  color: var(--text-sub);
  font-size: clamp(0.96rem, 2.3vw, 1.08rem);
  line-height: 2;
}

.experiments-preparing__wait {
  margin-top: 22px;
  color: var(--text-faint);
  font-size: 0.9rem;
}

@keyframes preparing-signal {
  0%, 100% {
    opacity: 0.45;
    transform: scaleY(0.72);
  }
  50% {
    opacity: 1;
    transform: scaleY(1);
  }
}

@media (max-width: 768px) {
  .experiments-preparing__section {
    min-height: calc(100svh - 72px);
    padding: 112px 0 64px;
  }

  .experiments-preparing__panel {
    border-radius: 18px;
  }

  .experiments-preparing__message br {
    display: none;
  }
}

@media (max-width: 430px) {
  .experiments-preparing__panel {
    padding: 44px 22px 48px;
  }

  .experiments-preparing__signal {
    margin-bottom: 18px;
  }

  .experiments-preparing__message {
    line-height: 1.9;
  }
}

@media (prefers-reduced-motion: reduce) {
  .experiments-preparing__signal span {
    animation: none;
    opacity: 0.85;
  }
}