/* ============================================================
   06-nav-cta.css  ―  ヘッダー / ナビ / 固定CTA / ローダー
   ============================================================ */

/* ------------------------------------------------------------
   ヘッダー
   ------------------------------------------------------------ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  min-height: var(--header-h);
  z-index: var(--z-header);
  display: flex;
  align-items: center;
  gap: var(--sp-s);
  /* 文字の上下にゆとりを持たせる */
  padding: .7rem var(--gutter);
  padding-right: clamp(.5rem, 3.5vw, 2rem);
  background: rgba(61, 0, 2, 0);
  backdrop-filter: blur(0);
  transition: background var(--t-mid) ease, backdrop-filter var(--t-mid) ease, box-shadow var(--t-mid) ease;
}
.site-header.is-stuck {
  background: rgba(61, 0, 2, .88);
  backdrop-filter: blur(10px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, .35);
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  /* 左端に貼り付かないよう、少しだけ中央寄りに置く */
  margin-left: clamp(.25rem, 3.5vw, 3.5rem);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .1em;
  white-space: nowrap;
}
.site-header__mark { width: 54px; flex: none; }
.site-header__mark img { width: 100%; height: auto; object-fit: contain; }

/* 「ネオレトロスナック」＋「ヨリドコロ」を2段で */
.site-header__name {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}
.site-header__name small {
  font-size: clamp(.62rem, 2.4vw, .72rem);
  letter-spacing: .14em;
  color: var(--c-gold);
  font-weight: 500;
}
.site-header__name strong {
  font-size: clamp(1rem, 4vw, 1.2rem);
  letter-spacing: .12em;
  font-weight: 700;
}

.site-header__spacer { flex: 1; }

/* ------------------------------------------------------------
   3本線ボタン（スマホのみ）
   ------------------------------------------------------------ */
.nav-toggle {
  flex: none;
  width: 46px; height: 46px;
  display: grid;
  place-content: center;
  gap: 6px;
  border-radius: var(--r-m);
  border: 1px solid var(--c-border);
  background: rgba(0, 0, 0, .3);
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  border-radius: 2px;
  background: var(--c-text);
  transition: transform var(--t-fast) var(--ease-smooth),
              opacity var(--t-fast) ease;
}
/* 開いているときは × に */
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

@media (min-width: 900px) { .nav-toggle { display: none; } }

/* ------------------------------------------------------------
   スマホのメニュー（3本線で開閉するパネル）
   ------------------------------------------------------------ */
@media (max-width: 899px) {
  .gnav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    max-height: calc(100svh - var(--header-h));
    overflow-y: auto;
    padding: .5rem var(--gutter) 1.75rem;
    background: linear-gradient(180deg, #3d0002 0%, #4a0002 100%);
    border-top: 1px solid var(--c-border-soft);
    box-shadow: 0 18px 40px rgba(0, 0, 0, .45);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity var(--t-mid) ease,
                transform var(--t-mid) var(--ease-smooth),
                visibility var(--t-mid) ease;
  }
  .gnav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }
  .gnav__link {
    display: block;
    padding: 1rem .25rem;
    font-size: 1.05rem;
    letter-spacing: .04em;
    border-bottom: 1px solid var(--c-border-soft);
  }
  .gnav__link::before { content: "☾ "; color: var(--c-gold); margin-right: .3em; }
  .gnav__cta { display: block; margin-top: 1.25rem; }
}

/* PCナビ */
@media (min-width: 900px) {
  /* パネル内のLINEボタンはPCでは不要（ヘッダー右のボタンがあるため） */
  .gnav__cta { display: none; }
  .gnav { display: flex; gap: clamp(1rem, 1.6vw, 1.6rem); }
  .gnav__link {
    position: relative;
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: .04em;
    white-space: nowrap;
    padding-block: .3rem;
    color: var(--c-text-dim);
    transition: color var(--t-fast) ease;
  }
  .gnav__link::after {
    content: "";
    position: absolute; left: 0; bottom: 0;
    width: 100%; height: 2px;
    background: var(--c-pink);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t-fast) var(--ease-smooth);
  }
  .gnav__link:hover { color: var(--c-text); }
  .gnav__link:hover::after,
  .gnav__link.is-active::after { transform: scaleX(1); }
  .gnav__link.is-active { color: var(--c-text); }
}

/* ヘッダー内のLINEボタン（PCのみ） */
.site-header__cta { display: none; }
@media (min-width: 900px) {
  .site-header__cta {
    display: inline-flex;
    align-items: center;
    gap: .45em;
    /* ナビ最後の項目（Q&A）と離す */
    margin-left: clamp(1rem, 3vw, 2.5rem);
    min-height: 0;
    padding: .6em 1.4em;
    border-radius: var(--r-pill);
    background: var(--c-line);
    color: #fff;
    font-family: var(--f-pop);
    font-weight: 700;
    font-size: .98rem;
    white-space: nowrap;
    box-shadow: 0 4px 0 rgba(0, 0, 0, .25);
    transition: transform var(--t-fast) var(--ease-pop);
  }
  .site-header__cta:hover { transform: translateY(-2px); }
  .site-header__cta svg { width: 1.2em; height: 1.2em; fill: currentColor; }
}

/* スマホではロゴと店名をもう少し左へ */
@media (max-width: 899px) {
  .site-header__brand { margin-left: 0; }
}

/* 横幅に余裕のないPC（900〜1150px）では、ナビとボタンを少し詰める */
@media (min-width: 900px) and (max-width: 1150px) {
  .site-header__brand { margin-left: .5rem; }
  .site-header__mark { width: 46px; }
  .site-header__name strong { font-size: 1rem; }
  .gnav { gap: .8rem; }
  .gnav__link { font-size: .88rem; }
  .site-header__cta { margin-left: 1rem; font-size: .88rem; padding: .55em 1.1em; }
}

/* ------------------------------------------------------------
   スマホ下部の固定CTA
   ------------------------------------------------------------ */
.cta-fixed {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: var(--z-cta);
  padding: .55rem var(--gutter) calc(.55rem + env(safe-area-inset-bottom, 0px));
  background: linear-gradient(180deg, rgba(61, 0, 2, 0), rgba(61, 0, 2, .95) 40%);
  transform: translateY(120%);
  transition: transform var(--t-mid) var(--ease-smooth);
}
.cta-fixed.is-show { transform: translateY(0); }
/* メニューを開いているあいだは引っ込める */
body.is-nav-open .cta-fixed { transform: translateY(120%); }
@media (min-width: 900px) { .cta-fixed { display: none; } }

/* ページトップへ */
.to-top {
  position: fixed;
  right: var(--gutter);
  bottom: calc(var(--cta-h) + 1rem + env(safe-area-inset-bottom, 0px));
  z-index: var(--z-sticky);
  width: 58px; height: 58px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(0, 0, 0, .55);
  border: 1px solid var(--c-gold);
  color: var(--c-gold);
  font-size: 1.5rem;
  line-height: 1;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .35);
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-mid) ease;
}
.to-top.is-show { opacity: 1; pointer-events: auto; }
@media (min-width: 900px) { .to-top { bottom: 1.5rem; } }

/* ------------------------------------------------------------
   ローディング
   ------------------------------------------------------------ */
.loader {
  position: fixed;
  inset: 0;
  z-index: var(--z-loader);
  display: grid;
  place-items: center;
  background: var(--c-bg);
  transition: opacity .7s ease, visibility .7s ease;
}
.loader.is-hide { opacity: 0; visibility: hidden; }
.loader__inner { text-align: center; }
.loader__mark {
  font-size: clamp(2.4rem, 12vw, 3.6rem);
  color: var(--c-gold);
  animation: yd-neon 2.4s ease-in-out infinite;
}
.loader__text {
  margin-top: var(--sp-s);
  font-size: var(--fs-small);
  letter-spacing: .24em;
  color: var(--c-text-dim);
}
/* 左から右へ流れるインジケーター */
.loader__bar {
  position: relative;
  width: 160px; height: 3px;
  margin: var(--sp-m) auto 0;
  background: rgba(246, 236, 223, .16);
  border-radius: 3px;
  overflow: hidden;
}
.loader__bar span {
  position: absolute;
  top: 0; left: 0;
  width: 40%; height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--c-pink), var(--c-gold));
  animation: yd-loader-bar 1.15s cubic-bezier(.65, 0, .35, 1) infinite;
}