/* ============================================================
   school.css - スクール（サブページ再設計版）
   ワイヤーフレーム_サブページ再設計.md §3-2 準拠
   参考: zelvia /academy/（カード型導線）＋/hometown/（縦スタック・段階CTA）
   ============================================================ */

/* ---------- 01 INTRO（中央寄せリード） ---------- */
.school-intro {
  text-align: center;
}

.school-catch {
  font-family: var(--font-head);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: 0.04em;
}

.school-lead {
  max-width: 820px;
  margin: 28px auto 0;
}

.school-lead strong {
  color: var(--accent-dark);
}

/* ---------- クラス早見ナビ（3枚の選択タイル） ---------- */
.classnav-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.classnav-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: var(--shadow-1);
  padding: 28px 24px 24px;
  transition: border-color 0.24s var(--ease-out), box-shadow 0.24s var(--ease-out);
}

.classnav-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-2);
}

.classnav-card__num {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--accent-dark);
}

.classnav-card__name {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.02em;
}

.classnav-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.classnav-card__tags b {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  background: var(--primary);
  color: var(--text-inverse);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.04em;
  border-radius: 2px;
}

.classnav-card__foot {
  margin-top: auto;
  padding-top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.classnav-card__campus {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-sub);
}

.classnav-card__arrow {
  flex: 0 0 30px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  transition: background 0.24s var(--ease-out), border-color 0.24s var(--ease-out);
}

.classnav-card__arrow svg {
  stroke: var(--text);
  transform: rotate(90deg);
}

.classnav-card:hover .classnav-card__arrow {
  background: var(--accent);
  border-color: var(--accent);
}

.classnav-card:hover .classnav-card__arrow svg {
  stroke: var(--text-inverse);
}

/* ---------- CLASS 章カード（縦積み：番号→写真→青タグ→見出し・本文） ---------- */
.class-card {
  max-width: 840px;
  margin: 0 auto;
}

/* 英字ラベルは小さな金の眉ラベル（sub-head__enと同格） */
.class-card__num {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent-dark);
  margin-bottom: 18px;
}

.class-card__num::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--accent);
}

.class-card__photo {
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border-radius: 6px;
  box-shadow: var(--shadow-1);
}

/* 日本語クラス名がメイン見出し */
.class-card__name {
  font-family: var(--font-head);
  font-size: 28px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

.class-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 24px 0 12px;
}

.class-card__tags b {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  background: var(--primary);
  color: var(--text-inverse);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.04em;
  border-radius: 2px;
}

.class-card__tags b.is-gold {
  background: var(--grad-gold);
}

.class-card__copy strong {
  display: block;
  font-size: 17px;
  margin-bottom: 8px;
}

.class-card__copy p {
  margin-bottom: 14px;
}

.class-card__copy p:last-child {
  margin-bottom: 0;
}

/* 選抜制の注記（※付き補足テキスト・枠なし） */
.class-card__note {
  margin-top: 14px;
  font-size: 12px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  color: var(--text-sub);
}

/* 校舎チップ */
.campus-chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
}

.campus-chips__label {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text-sub);
  margin-right: 4px;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 5px 16px;
  border: 1px solid var(--border);
  border-radius: 100vmax;
  background: var(--bg);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

/* 章カード直下の行動ボタン */
.class-card__action {
  margin-top: 24px;
}

/* ---------- 05 LOCATION（校舎2カード） ---------- */
.loc-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.loc-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: var(--shadow-1);
  padding: 32px 28px;
}

.loc-card__name {
  display: flex;
  align-items: center;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line, #dde4ec);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.loc-card__label {
  margin: 20px 0 10px;
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text-sub);
}

.loc-card__classes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.loc-note {
  margin-top: 20px;
  text-align: center;
}

/* ---------- JOIN US（横並び4ステップ） ---------- */
.join-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.flow-step {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: var(--shadow-1);
  padding: 26px 20px;
  text-align: center;
}

/* ステップ間の矢印つなぎ */
.flow-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -13px;
  z-index: 1;
  width: 10px;
  height: 10px;
  border-top: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
  transform: translateY(-50%) rotate(45deg);
}

.flow-step__label {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.flow-step h3 {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.02em;
}

.flow-step p {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-sub);
}

/* ---------- 07 Q&A（アコーディオン） ---------- */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

.faq-item summary {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 60px;
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  list-style: none;
  transition: background 0.24s var(--ease-out);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary:hover {
  background: var(--surface);
}

.faq-q {
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--grad-blue);
  color: var(--text-inverse);
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.faq-item summary svg {
  margin-left: auto;
  flex: 0 0 auto;
  stroke: var(--text-sub);
  transition: transform 0.24s var(--ease-out);
}

.faq-item[open] summary svg {
  transform: rotate(180deg);
}

.faq-item__a {
  display: flex;
  gap: 14px;
  padding: 4px 20px 20px;
}

.faq-a {
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--grad-gold);
  color: var(--text-inverse);
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.faq-item__a p {
  font-size: 14px;
  line-height: 1.9;
  padding-top: 4px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .join-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .flow-step:nth-child(2)::after {
    display: none;
  }
}

@media (max-width: 767px) {
  .classnav-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .class-card__photo {
    aspect-ratio: 16 / 10;
  }

  .class-card__name {
    font-size: 22px;
  }

  .loc-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .join-flow {
    grid-template-columns: 1fr;
  }

  .flow-step:not(:last-child)::after {
    top: auto;
    right: 50%;
    bottom: -14px;
    transform: translateX(50%) rotate(135deg);
  }
}