/* ======================================================================
   Kyoto Red Data Book Template - smartphone.css
   Project: Kyoto Prefecture Red Data Book (Kyoto RDB)
   Purpose: ヘッダー、ナビ、パンくず、フッターのスマホ向けレイアウト調整
   Placement: /shared/site_rdb/style/smartphone.css
   ====================================================================== */

@charset "utf-8";

/* ------------------------------
   Global Navigation - Tablet (769px〜1100px)
   5つ横並びを維持しながらウィンドウ幅に応じて縮小
   ------------------------------ */
@media (min-width: 769px) and (max-width: 1100px) {
  .rdb-gnav {
    padding-inline: 0.25rem;
  }
  .rdb-gnav #menu {
    display: flex;
    flex-wrap: nowrap; /* 折り返しさせない：常に5つ横並び */
    gap: clamp(3px, 0.5vw, 12px);
    max-width: none;
    background: transparent;
    box-shadow: none;
    border: none;
    padding: 0;
  }
  .rdb-gnav #menu li {
    flex: 1 1 0; /* 均等に空間を分割 */
    min-width: 0; /* flex子要素の縮小を許可 */
    width: auto;
    border-right: none;
    margin: 0;
  }
  .rdb-gnav #menu a {
    min-width: 0;
    width: 100%;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: clamp(0.72rem, 1.4vw, 0.95rem);
    padding: clamp(0.55rem, 0.75vw, 0.8rem) clamp(0.2rem, 0.8vw, 1.5rem) clamp(0.9rem, 1.1vw, 1.2rem);
    white-space: nowrap;
    border: none;
    background: transparent;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
  }
}

/* ------------------------------
   Global Navigation - Smartphone (max-width: 768px)
   ------------------------------ */
@media (max-width: 768px) {
  .rdb-gnav {
    position: relative;
  }

  .rdb-gnav__toggle {
    display: block;
    position: fixed;
    top: 1rem;
    right: 1rem;
  }

  .rdb-gnav #menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    max-width: 85vw;
    height: 100vh;
    background: #fff;
    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.15);
    flex-direction: column;
    gap: 0;
    padding: 4rem 0 2rem;
    margin: 0;
    border-radius: 0;
    border: none;
    z-index: 1000;
    overflow-y: auto;
    transition: right 0.3s ease;
  }

  .rdb-gnav #menu.is-active {
    right: 0;
  }

  .rdb-gnav #menu li {
    flex: none;
    width: 100%;
    border-right: none;
    margin: 0;
  }

  /* ハンバーガーメニューではトップページ項目を表示 */
  .rdb-gnav #menu li.gnav-item--top {
    display: block;
  }

  .rdb-gnav #menu li:not(:last-child)::after {
    display: none;
  }

  .rdb-gnav #menu a {
    display: block;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: 0;
    background: transparent;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
  }

  .rdb-gnav #menu a::after {
    display: none;
  }

  .rdb-gnav #menu a.select {
    background: var(--accent-light, #f6eef8);
    color: var(--accent-dark, #333);
    font-weight: 600;
    border-left: 4px solid var(--accent-dark, #751485);
  }

  .rdb-gnav .gnav-item--search a {
    background: var(--color-kyoto-purple-700);
    color: #fff;
    border-left: 4px solid var(--color-kyoto-purple-800);
  }

  .rdb-gnav .gnav-item--search a.select {
    background: var(--color-kyoto-purple-800);
  }

  .rdb-gnav .gnav-item--top a {
    background: var(--color-kyoto-purple-100, #f6eef8);
    color: var(--color-kyoto-purple-700, #751485);
    font-weight: 600;
    border-left: 4px solid var(--color-kyoto-purple-700, #751485);
  }

  .rdb-gnav .gnav-item--top a:hover {
    background: var(--color-kyoto-purple-200, #e7d3eb);
  }
}

/* ------------------------------
   Contact Form - Responsive
   ------------------------------ */
@media (max-width: 880px) {
  .rdb-contactform__grid {
    grid-template-columns: 1fr;
  }
}

/* ------------------------------
   Footer Back Link & Contact Form - Responsive
   ------------------------------ */
@media (max-width: 768px) {
  /* サイト全体の横はみ出しを防止 */
  html, body {
    overflow-x: hidden;
  }

  /* フッターお問い合わせ欄の100vw指定（はみ出し原因）をスマホサイズでは解除 */
  .rdb-contactform {
    width: 100%;
    margin-left: 0;
    margin-right: 0;
    padding-left: clamp(16px, 4vw, 24px);
    padding-right: clamp(16px, 4vw, 24px);
    box-sizing: border-box;
  }

  .rdb-footer__back-link {
    font-size: 0.8125rem;
    padding: 0.75rem 1.4rem;
    gap: 0.35rem;
  }
  
  .rdb-footer__back-link::after {
    font-size: 0.7rem;
  }
}