/* ============================================================
   KOTO FASHION SCHOOL — school-life.css
   school-life/index.html 固有スタイル
   共通スタイルは /css/common.css を参照
============================================================ */

/* ===== INTRO 2COL（テンプレ） ===== */
  .intro-section { background: var(--cream); padding: 80px 0; }
  .intro-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 72px;
    align-items: center;
  }
  .intro-2col-text .section-tag { margin-bottom: 16px; }
  .intro-2col-text h2 {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(28px, 3.5vw, 44px);
    font-weight: 300; line-height: 1.3;
    color: var(--black); letter-spacing: -0.01em;
    margin-bottom: 24px;
  }
  .intro-2col-text p {
    font-size: 15px; font-weight: 300;
    line-height: 2.3; color: var(--dark);
    margin-bottom: 16px;
  }
  .intro-2col-text p:last-child { margin-bottom: 0; }
  .intro-2col-img {
    position: relative;
  }
  .intro-2col-img img {
    width: 100%; aspect-ratio: 4/3;
    object-fit: contain; display: block;
    border-radius: 3px;
  }
  .intro-2col-img::after {
    display: none;
  }

  @media (max-width: 768px) {
    .intro-2col { grid-template-columns: 1fr; gap: 36px; }
    .intro-2col-img { order: -1; }
    .intro-2col-img::after { display: none; }
  }

  /* ===== CALENDAR SECTION ===== */
  .calendar-section { background: var(--white); }

  /* 月ナビゲーション */
  .month-nav {
    display: flex; flex-wrap: wrap; gap: 4px;
    margin-bottom: 64px;
    border-bottom: 1px solid rgba(0,61,128,0.1);
    padding-bottom: 0;
  }
  .month-nav-btn {
    padding: 12px 18px; background: none; border: none;
    font-family: 'Outfit', sans-serif; font-size: 11px; font-weight: 600;
    letter-spacing: 0.2em; color: var(--mid); cursor: pointer;
    position: relative; transition: color 0.3s;
    border-bottom: 2px solid transparent; margin-bottom: -1px;
  }
  .month-nav-btn:hover { color: var(--blue); }
  .month-nav-btn.active { color: var(--gold-dark); border-bottom-color: var(--gold); }

  /* 月グリッド */
  .months-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3px;
  }

  .month-card {
    position: relative; overflow: hidden; background: var(--white);
    transition: all 0.4s;
  }
  .month-card:hover { transform: translateY(-4px); box-shadow: 0 20px 60px rgba(0,61,128,0.15); }

  .month-card-img {
    width: 100%; aspect-ratio: 4/3; object-fit: cover;
    display: block; transition: transform 0.6s cubic-bezier(0.4,0,0.2,1);
    filter: brightness(0.88);
  }
  .month-card:hover .month-card-img { transform: scale(1.05); filter: brightness(1); }

  .month-card-body {
    padding: 24px 28px 28px;
    background: var(--white);
    border-bottom: 3px solid transparent;
    transition: border-color 0.3s;
  }
  .month-card:hover .month-card-body { border-bottom-color: var(--gold); }

  .month-label {
    display: flex; align-items: baseline; gap: 12px;
    margin-bottom: 16px;
  }
  .month-jp {
    font-family: 'Noto Serif JP', serif;
    font-size: 22px; font-weight: 400; color: var(--blue-dark);
    letter-spacing: 0.05em;
  }
  .month-en {
    font-family: 'Cormorant Garamond', serif;
    font-size: 13px; font-weight: 300; font-style: italic;
    color: var(--gold-dark); letter-spacing: 0.2em;
  }

  .month-events { list-style: none; }
  .month-events li {
    font-size: 13px; font-weight: 300; color: var(--dark);
    line-height: 1.6; padding: 8px 0 9px;
    border: none;
    border-bottom: 1px solid rgba(0,61,128,0.08);
    display: flex; align-items: center; gap: 10px;
    letter-spacing: 0.04em;
  }
  .month-events li:last-child { border-bottom: none; }
  .month-events li::before {
    content: '';
    width: 5px; height: 5px; border-radius: 50%;
    background: var(--gold); flex-shrink: 0;
  }
  .month-events li.highlight {
    font-weight: 500; color: var(--blue-dark);
  }
  .month-events li.highlight::before { background: var(--gold); width: 6px; height: 6px; }

  /* ===== HIGHLIGHT EVENTS ===== */
  .highlight-section { background: var(--blue-dark); }
  .highlight-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 2px; margin-top: 56px;
  }
  .highlight-card {
    position: relative; overflow: hidden;
    aspect-ratio: 3/4; cursor: default;
    background: var(--charcoal);
  }
  .highlight-card-img {
    position: absolute; inset: 0;
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.7s cubic-bezier(0.4,0,0.2,1);
    filter: brightness(0.85);
  }
  .highlight-card:hover .highlight-card-img { transform: scale(1.07); filter: brightness(0.65); }
  .highlight-card-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(
      to bottom,
      rgba(255,255,255,0.05) 0%,
      rgba(0,10,30,0.2) 40%,
      rgba(0,10,30,0.72) 100%
    );
    transition: background 0.4s;
  }
  .highlight-card:hover .highlight-card-overlay {
    background: linear-gradient(
      to bottom,
      rgba(255,255,255,0.05) 0%,
      rgba(0,10,30,0.32) 35%,
      rgba(0,10,30,0.85) 100%
    );
  }
  .highlight-card::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--gold); opacity: 0; transition: opacity 0.4s; z-index: 2; }
  .highlight-card:hover::before { opacity: 1; }
  .highlight-content { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-end; padding: 28px 24px; z-index: 2; }
  .highlight-tag { font-family: 'Outfit', sans-serif; font-size: 9px; font-weight: 600; letter-spacing: 0.35em; color: var(--gold); text-transform: uppercase; font-style: italic; margin-bottom: 8px; display: block; }
  .highlight-title { font-family: 'Noto Serif JP', serif; font-size: 18px; font-weight: 400; color: var(--white); line-height: 1.5; letter-spacing: 0.05em; margin-bottom: 0; transition: color 0.3s, margin-bottom 0.4s; }
  .highlight-card:hover .highlight-title { color: var(--gold-light); margin-bottom: 12px; }
  .highlight-desc { font-size: 12px; font-weight: 300; color: rgba(255,255,255,0.7); line-height: 1.9; max-height: 0; overflow: hidden; opacity: 0; transition: max-height 0.5s ease, opacity 0.4s ease; }
  .highlight-card:hover .highlight-desc { max-height: 80px; opacity: 1; }

  /* ===== OC BANNER ===== */
  .oc-banner { background: var(--cream); padding: 80px 0; }
  .oc-inner { display: flex; align-items: center; justify-content: space-between; gap: 48px; background: var(--white); border: 1px solid rgba(245,200,0,0.3); padding: 60px 72px; border-radius: 4px; position: relative; overflow: hidden; }
  .oc-inner::before { content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--gold); }
  .oc-inner::after { content: 'OC'; position: absolute; right: 60px; top: 50%; transform: translateY(-50%); font-family: 'Cormorant Garamond', serif; font-size: 180px; font-weight: 300; color: rgba(245,200,0,0.07); line-height: 1; font-style: italic; }
  .oc-text { flex: 1; }
  .oc-eyebrow { font-size: 10px; letter-spacing: 0.4em; color: var(--gold); text-transform: uppercase; font-family: 'Outfit', sans-serif; font-weight: 600; margin-bottom: 16px; }
  .oc-title { font-family: 'Noto Serif JP', serif; font-size: 28px; font-weight: 300; color: var(--black); line-height: 1.6; margin-bottom: 12px; }
  .oc-desc { font-size: 13px; font-weight: 300; color: var(--mid); line-height: 2; max-width: 420px; }
  .oc-actions { display: flex; flex-direction: column; gap: 12px; position: relative; z-index: 1; flex-shrink: 0; }
  .btn-oc-primary { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 16px 32px; background: var(--gold); color: var(--blue-dark); text-decoration: none; font-size: 12px; font-weight: 700; letter-spacing: 0.2em; border-radius: 2px; transition: all 0.3s; white-space: nowrap; }
  .btn-oc-primary:hover { background: var(--gold-dark); transform: translateY(-2px); }
  .btn-oc-secondary { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 16px 32px; border: 1px solid var(--blue-dark); color: var(--blue-dark); text-decoration: none; font-size: 12px; font-weight: 400; letter-spacing: 0.2em; border-radius: 2px; transition: all 0.3s; white-space: nowrap; }
  .btn-oc-secondary:hover { background: var(--blue-dark); color: var(--white); }

  /* ===== SNS BAR ===== */

  /* ===== FOOTER ===== */

  /* ===== RESPONSIVE ===== */
  @media (max-width: 1024px) {
    .months-grid { grid-template-columns: repeat(2, 1fr); }
    .highlight-grid { grid-template-columns: repeat(2, 1fr); }
    .oc-inner::after { display: none; }
  }
  @media (max-width: 768px) {
    .months-grid { grid-template-columns: 1fr; }
    .highlight-grid { grid-template-columns: 1fr; }
    .highlight-card { aspect-ratio: 16/9; }
    .highlight-card-img--top { object-position: center 15%; }
    .oc-inner { flex-direction: column; padding: 36px 24px; gap: 28px; }
    .oc-title { font-size: 20px; }
    .oc-actions { flex-direction: row; flex-wrap: wrap; }
    .btn-oc-primary, .btn-oc-secondary { flex: 1; min-width: 140px; padding: 14px 16px; font-size: 11px; }
    .month-nav { gap: 2px; }
    .month-nav-btn { padding: 10px 12px; font-size: 10px; }
  }
  @media (max-width: 480px) {
    .highlight-grid { grid-template-columns: 1fr; }
    .highlight-card { aspect-ratio: 4/3; }
    .highlight-card-img--top { object-position: center 15%; }
  }