/* 学院内探索ページ固有スタイル */

.page-hero {
  text-align: center;
  padding: 3rem 1.5rem 2.5rem;
  border-bottom: 1px solid var(--brass);
}

.page-hero__title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--brass);
  margin: 0 0 0.75rem;
}

.page-hero__desc {
  font-size: 1rem;
  color: color-mix(in oklch, var(--brass) 82%, transparent);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

.area-list {
  padding: 2.5rem 1.5rem;
  max-width: 1020px;
  margin: 0 auto;
}

.area-cards {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.area-card__link {
  display: block;
  color: var(--brass);
  border-width: 1px;
  border-style: solid;
  border-color: color-mix(in oklch, var(--brass) 35%, transparent);
  transition: border-color 0.2s;
}

.area-card__link:hover {
  border-color: var(--brass);
}

.area-card__thumbnail {
  height: 160px;
  overflow: hidden;
  background-color: color-mix(in srgb, var(--emerald) 25%, var(--ink));
  background-image: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 8px,
    color-mix(in srgb, var(--brass) 8%, transparent) 8px,
    color-mix(in srgb, var(--brass) 8%, transparent) 9px
  );
}

.area-card__thumbnail-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.area-card__body {
  padding: 1rem 1.25rem 1.25rem;
}

.area-card__name {
  font-size: 1.1rem;
  color: var(--brass);
  margin: 0 0 0.5rem;
}

.area-card__desc {
  font-size: 0.9rem;
  color: color-mix(in oklch, var(--brass) 80%, transparent);
  margin: 0;
  line-height: 1.6;
}

/* エリア固有アクセント: border-top (baseを全て先に、hoverを後にまとめる) */
.area-card--alchemy .area-card__link {
  border-top-width: 3px;
  border-top-color: var(--ember);
}

.area-card--airship .area-card__link,
.area-card--observatory .area-card__link {
  border-top-width: 3px;
  border-top-color: var(--azure);
}

.area-card--summoning .area-card__link {
  border-top-width: 3px;
  border-top-color: var(--arcane);
}

.area-card--clock-tower .area-card__link {
  border-top-width: 3px;
  border-top-color: var(--silver);
}

.area-card--dueling-ground .area-card__link {
  border-top-width: 3px;
  border-top-color: var(--crimson);
}

.area-card--alchemy .area-card__link:hover {
  border-color: var(--ember);
}

.area-card--airship .area-card__link:hover,
.area-card--observatory .area-card__link:hover {
  border-color: var(--azure);
}

.area-card--summoning .area-card__link:hover {
  border-color: var(--arcane);
}

.area-card--clock-tower .area-card__link:hover {
  border-color: var(--silver);
}

.area-card--dueling-ground .area-card__link:hover {
  border-color: var(--crimson);
}

@media (width <= 600px) {
  .page-hero {
    padding: 2rem 1rem 1.5rem;
  }

  .page-hero__title {
    font-size: 1.6rem;
  }

  .area-list {
    padding: 1.5rem 1rem;
  }

  .area-cards {
    grid-template-columns: 1fr;
  }
}