/* ==========================================================================
   page-ai-training-sample.php 専用スタイル（AI研修教材サンプル）

   このページの .tag は他画面より一回り小さいサイズで使われていたため
   ここで上書きしています。
   ========================================================================== */
.tag {
  display: inline-flex;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}

.page-intro {
  max-width: var(--content-max-width);
  margin-inline: auto;
  padding: 64px var(--content-padding-inline) 40px;
}

.page-intro__title {
  margin-top: 24px;
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--color-text-strong);
}

.page-intro__label {
  margin-top: 8px;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-text-faint);
}

.page-intro__lead {
  margin-top: 16px;
  color: var(--color-text-muted);
}

.materials {
  max-width: var(--content-max-width);
  margin-inline: auto;
  padding: 0 var(--content-padding-inline) var(--space-section);
}

.material-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.material-card__figure {
  position: relative;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--color-bg-soft);
  border: 1px solid var(--color-border);
}

.material-card__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.material-card__zoom {
  position: absolute;
  right: 12px;
  bottom: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: rgba(15, 42, 71, 0.85);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
}

.material-card__body {
  margin-top: 20px;
}

.material-card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.material-card__number {
  font-size: 0.875rem;
  color: var(--color-text-faint);
}

.material-card__title {
  margin-top: 12px;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-strong);
}

.material-card__description {
  margin-top: 8px;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.materials__source {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-text-faint);
}

@media (min-width: 768px) {
  .material-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ==========================================================================
   画像拡大用ライトボックス（「クリックで拡大」ボタンで表示）
   ========================================================================== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.lightbox[hidden] {
  display: none;
}

.lightbox__overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(15, 42, 71, 0.85);
}

.lightbox__content {
  position: relative;
  max-width: min(960px, 100%);
  max-height: 100%;
}

.lightbox__image {
  display: block;
  max-width: 100%;
  max-height: 85vh;
  border-radius: var(--radius-sm);
}

.lightbox__close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--color-text-strong);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

body.lightbox-open {
  overflow: hidden;
}