@charset "UTF-8";

/* ==========================================================================
   ヘッダー
   FV上は透過（白抜き）、FVを抜けると白背景に切り替わる（.header--solid）
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: var(--header-height);
  padding-inline: var(--spacing-md);
  transition: background-color 0.35s ease, box-shadow 0.35s ease;
}

@media (min-width: 768px) {
  .header {
    padding-inline: 40px;
  }
}

.header--solid {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 16px rgba(20, 41, 79, 0.08);
}

/* ---- ロゴ ---- */
.header__logo {
  display: block;
  flex-shrink: 0;
}

.header__logo-img {
  width: auto;
  height: 22px;
}

@media (min-width: 768px) {
  .header__logo-img { height: 26px; }
}

/* 1009修正：ロゴは常にカラー（ローディングと同じ）。紺色の文字が暗いFVに沈まないよう、透過中は白い下地を敷く */
.header__logo {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 4px 14px rgba(20, 41, 79, 0.16);
  transition: background-color 0.35s ease, box-shadow 0.35s ease;
}

.header--solid .header__logo {
  background: transparent;
  box-shadow: none;
}

/* ---- ナビ ---- */
.header__nav {
  display: none;
}

@media (min-width: 1000px) {
  .header__nav {
    display: flex;
    align-items: center;
    gap: 32px;
  }
}

.header__nav-link {
  font-size: 14px;
  font-weight: 500;
  color: #ffffff;
  text-shadow: 0 1px 8px rgba(4, 12, 28, 0.45);
  transition: color 0.35s ease, text-shadow 0.35s ease;
}

.header--solid .header__nav-link {
  color: var(--color-text);
  text-shadow: none;
}

.header__nav-link:hover {
  color: var(--color-cyan);
}

/* ---- ハンバーガー（SP・タブレット） ---- */
.header__toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
}

@media (min-width: 1000px) {
  .header__toggle { display: none; }
}

.header__toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: #ffffff;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease, background-color 0.35s ease;
}

.header--solid .header__toggle-bar {
  background: var(--color-navy);
}

.header__toggle[aria-expanded="true"] .header__toggle-bar {
  background: var(--color-navy);
}

.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---- ドロワー（SP） ---- */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  padding: var(--header-height) 28px 40px;
  background: #ffffff;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
}

.drawer.is-open {
  opacity: 1;
  visibility: visible;
  transform: none;
}

@media (min-width: 1000px) {
  .drawer { display: none; }
}

.drawer__link {
  display: block;
  padding: 18px 4px;
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-navy);
  border-bottom: 1px solid var(--color-border);
}

.drawer__cta {
  margin-top: 28px;
}