/* =========================
   Header
========================= */
.natura-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: #fff;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--natura-line);
}

.natura-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 64px;
}

.natura-header__logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  max-width: calc(100% - 64px);
}

.natura-header__logo a {
  display: inline-flex;
  align-items: center;
  line-height: 1;
}

.natura-header__logo img {
  display: block;
  height: 71px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 8px;
  padding: 4px 8px;
}

.natura-header__nav {
  margin-left: auto;
}

.natura-header__nav ul {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.natura-header__nav a {
  text-decoration: none;
  color: var(--natura-brown);
  font-size: 13px;
  font-weight: 600;
  transition: opacity 0.25s ease;
  letter-spacing: 0.04em;
}

.natura-header__nav a:hover {
  opacity: 0.7;
}

.natura-header__cta {
  flex-shrink: 0;
}

.natura-header__toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
}

.natura-header__toggle span {
  position: absolute;
  left: 10px;
  width: 24px;
  height: 2px;
  background: var(--natura-brown);
  border-radius: 999px;
  transition: transform 0.25s ease, opacity 0.25s ease, top 0.25s ease;
}

.natura-header__toggle span:nth-child(1) {
  top: 14px;
}

.natura-header__toggle span:nth-child(2) {
  top: 21px;
}

.natura-header__toggle span:nth-child(3) {
  top: 28px;
}

.natura-header__toggle.is-active span:nth-child(1) {
  top: 21px;
  transform: rotate(45deg);
}

.natura-header__toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.natura-header__toggle.is-active span:nth-child(3) {
  top: 21px;
  transform: rotate(-45deg);
}

.natura-mobile-menu {
  display: none;
  border-top: 1px solid var(--natura-line);
  background: rgba(252, 250, 247, 0.98);
}

.natura-mobile-menu.is-open {
  display: block;
}

.natura-mobile-menu__nav {
  padding: 18px 0 24px;
}

.natura-mobile-menu__nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.natura-mobile-menu__nav li + li {
  margin-top: 10px;
}

.natura-mobile-menu__nav a {
  display: block;
  padding: 14px 16px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--natura-line);
  text-decoration: none;
  color: var(--natura-brown);
  font-weight: 600;
}

/* 予約ボタンだけ特別 */
.natura-mobile-menu__nav a[href*="#reserve"] {
  background: var(--natura-brown);
  color: #fff;
  border: none;
}

/* 電話も少し強調 */
.natura-mobile-menu__nav a[href^="tel"] {
  background: #efe3d5;
  color: var(--natura-brown);
}

body.menu-open {
  overflow: hidden;
}

@media (max-width: 900px) {
  .natura-header__nav,
  .natura-header__cta {
    display: none;
  }

  .natura-header__toggle {
    display: inline-block;
  }

  .natura-header__inner {
    min-height: 62px;
    padding: 0 2px;
  }

  .natura-header__logo {
    max-width: calc(100% - 60px);
  }

  .natura-header__logo img {
    height: 62px;
    padding: 3px 6px;
    border-radius: 6px;
  }
}

@media (max-width: 600px) {
  .natura-header {
    padding: 0 12px;
  }

  .natura-header__inner {
    min-height: 60px;
    gap: 12px;
  }

  .natura-header__logo {
    max-width: calc(100% - 56px);
  }

  .natura-header__logo img {
    height: 62px;
    padding: 2px 4px;
    border-radius: 4px;
  }

  .natura-header__toggle {
    width: 40px;
    height: 40px;
  }

  .natura-header__toggle span {
    left: 9px;
    width: 22px;
  }

  .natura-header__toggle span:nth-child(1) {
    top: 13px;
  }

  .natura-header__toggle span:nth-child(2) {
    top: 20px;
  }

  .natura-header__toggle span:nth-child(3) {
    top: 27px;
  }

  .natura-header__toggle.is-active span:nth-child(1) {
    top: 20px;
  }

  .natura-header__toggle.is-active span:nth-child(3) {
    top: 20px;
  }
}