/* ===========================================
   Energy Integration — Off-grid Solar
   =========================================== */

.energy {
  background:
    linear-gradient(180deg, #003D54 0%, #00638A 100%);
  color: var(--color-base);
  position: relative;
  /* 横方向はクリップ、縦は visible — 上方向の wave-divider が見切れないように */
  overflow-x: clip;
}

.energy::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(179, 210, 53, 0.2) 0%, transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(34, 190, 240, 0.25) 0%, transparent 40%);
  pointer-events: none;
}

.energy * {
  color: var(--color-base);
}

.energy .section__eyebrow {
  color: var(--color-accent-lime);
}

.energy__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-6);
  align-items: center;
}

/* 実証データ注記：モバイルは自然改行、PCは強制1行 */
.energy__data-note {
  margin-top: var(--space-6);
  text-align: center;
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--fs-small);
  word-break: keep-all;
  overflow-wrap: anywhere;
}

@media (min-width: 768px) {
  .energy__data-note {
    white-space: nowrap;
    /* viewport幅に応じてfont-sizeを縮めて確実に1行に収める */
    font-size: clamp(0.7rem, 1.4vw, 0.875rem);
  }
}

@media (min-width: 1024px) {
  .energy__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

.energy__lead {
  color: rgba(255, 255, 255, 0.8) !important;
}

/* ---------- Diagram ---------- */
.energy__diagram {
  position: relative;
  aspect-ratio: 1 / 1;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 0.625rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 0.625rem;
}

@media (min-width: 480px) {
  .energy__diagram {
    aspect-ratio: 1.2 / 1;
    border-radius: var(--radius-lg);
    padding: var(--space-3);
    gap: var(--space-2);
  }
}

.energy__node {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  min-width: 0;
}

@media (min-width: 480px) {
  .energy__node {
    border-radius: var(--radius-md);
    padding: var(--space-2);
  }
}

.energy__node-icon {
  width: 32px;
  height: 32px;
  margin-bottom: 6px;
  color: var(--color-accent-lime);
  filter: drop-shadow(0 4px 12px rgba(179, 210, 53, 0.35));
  display: flex;
  align-items: center;
  justify-content: center;
}

.energy__node-icon svg {
  width: 100%;
  height: 100%;
}

@media (min-width: 480px) {
  .energy__node-icon {
    width: 44px;
    height: 44px;
    margin-bottom: var(--space-1);
  }
}

.energy__node-label {
  font-size: 0.625rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent-lime) !important;
  margin-bottom: 2px;
  line-height: 1.2;
}

@media (min-width: 480px) {
  .energy__node-label {
    font-size: var(--fs-xs);
    letter-spacing: var(--tracking-wide);
    margin-bottom: 4px;
  }
}

.energy__node-value {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: var(--fw-black);
  color: var(--color-base);
  line-height: 1.1;
  word-break: keep-all;
}

@media (min-width: 480px) {
  .energy__node-value {
    font-size: 1.25rem;
  }
}

/* ---------- Stats Grid ---------- */
.energy__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.625rem;
  margin-top: var(--space-3);
}

@media (min-width: 480px) {
  .energy__stats {
    gap: var(--space-3);
    margin-top: var(--space-4);
  }
}

.energy__stat {
  padding: 0.875rem 1rem;
  background-color: rgba(255, 255, 255, 0.05);
  border-left: 3px solid var(--color-accent-lime);
  border-radius: var(--radius-sm);
}

@media (min-width: 480px) {
  .energy__stat {
    padding: var(--space-3);
  }
}

.energy__stat-number {
  font-family: var(--font-heading);
  font-size: clamp(1.375rem, 5vw, 2.5rem);
  font-weight: var(--fw-black);
  color: var(--color-accent-lime) !important;
  line-height: 1;
  margin-bottom: 4px;
  white-space: nowrap;
}

.energy__stat-label {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.8) !important;
  line-height: 1.3;
}

@media (min-width: 480px) {
  .energy__stat-label {
    font-size: var(--fs-small);
  }
}