@charset "utf-8";

/**
 * Header Extensions - Tablet Hamburger Menu & Sticky Header
 * タブレットサイズ用ハンバーガーメニューとスティッキーヘッダー
 */

/* ==========================================================================
   Tablet Hamburger Menu (タブレット用ハンバーガーメニュー)
   ========================================================================== */

/* Tablet navigation styles - 768px to 1439px */
@media (min-width: 768px) and (max-width: 1439px) {
  .header .navTrigger {
    background: var(--col_primary);
    border-radius: 50%;
    display: grid;
    place-items: center;
    height: 3.5vw;
    position: relative;
    transition: background 0.3s ease;
    will-change: background;
    width: 3.5vw;
    cursor: pointer;
  }
  
  .header .navTrigger input {
    display: none;
  }
  
  .header .navTrigger__inner {
    height: 1vw;
    display: block;
    position: relative;
    width: 1.5vw;
  }
  
  .header .navTrigger .bar {
    background: #fff;
    border-radius: 0.3vw;
    height: 1.5px;
    position: absolute;
    left: 0;
    translate: 0 -50%;
    transform-origin: center;
    transition: top 0.3s ease, rotate 0.1s ease;
    will-change: top;
    width: 100%;
  }
  
  .header .navTrigger .bar.bar-01 {
    top: 0;
  }
  
  .header .navTrigger .bar.bar-02 {
    top: 50%;
  }
  
  .header .navTrigger .bar.bar-03 {
    top: 100%;
  }
  
  /* Hamburger animation when active */
  .header:has(.navTrigger input:checked) .navTrigger {
    background: #000;
  }
  
  .header:has(.navTrigger input:checked) .navTrigger .bar {
    transition: rotate 0.3s ease;
    transition: top 0.1s ease, rotate 0.2s ease 0.1s;
    will-change: top;
  }
  
  .header:has(.navTrigger input:checked) .navTrigger .bar.bar-01 {
    top: 50%;
    rotate: 45deg;
  }
  
  .header:has(.navTrigger input:checked) .navTrigger .bar.bar-02 {
    opacity: 0;
  }
  
  .header:has(.navTrigger input:checked) .navTrigger .bar.bar-03 {
    top: 50%;
    rotate: -45deg;
  }
  
  /* Tablet navigation target */
  .header:has(.navTrigger input:checked) .navTargetWrap {
    pointer-events: all;
  }
  
  .header:has(.navTrigger input:checked) .navTargetWrap .bg {
    -webkit-backdrop-filter: blur(2px);
    backdrop-filter: blur(2px);
    transition-delay: 0s;
  }
  
  .header:has(.navTrigger input:checked) .navTargetWrap .navTarget {
    clip-path: var(--clipPath_open);
  }
  
  /* Tablet navigation wrapper */
  .header .navTargetWrap {
    height: 100dvh;
    pointer-events: none;
    position: fixed;
    inset: 0;
    width: 100vw;
    z-index: 800;
  }
  
  .header .navTargetWrap .bg {
    background-color: rgba(255, 255, 255, 0.1);
    height: 100%;
    transition: -webkit-backdrop-filter 0.1s ease;
    transition: backdrop-filter 0.1s ease;
    transition: backdrop-filter 0.1s ease, -webkit-backdrop-filter 0.1s ease;
    transition-delay: 0.2s;
    width: 100%;
  }
  
  .header .navTargetWrap .navTarget {
    clip-path: var(--clipPath_close_right);
    background: var(--col_primary);
    height: calc(100% - 8.06vw);
    position: absolute;
    top: 8.06vw;
    right: 0;
    transition: clip-path 0.3s ease;
    width: 50vw;
  }
  
  .header .navTargetWrap .navTarget__inner {
    height: 100%;
    overflow: auto;
    padding-bottom: 2vw;
    padding-block: 4vw 5vw;
    width: 100%;
    -webkit-overflow-scrolling: touch;
  }
  
  .header .navTargetWrap .navTarget__inner .list {
    width: 100%;
  }
  
  .header .navTargetWrap .navTarget__inner .list__item {
    border-bottom: 1px solid rgb(255, 255, 255, 0.2);
    color: #fff;
    display: block;
    font-size: 2.5vw;
    padding-inline: 4vw;
    padding-block: 3vw;
    position: relative;
    transition: background 0.3s ease;
  }
  
  .header .navTargetWrap .navTarget__inner .list__item:before {
    background: url(../images/common/icon_arr.svg) center/contain no-repeat;
    content: "";
    height: 1.2vw;
    position: absolute;
    top: 50%;
    right: 3vw;
    translate: 0 -50%;
    scale: -1;
    width: 1.2vw;
  }
  
  .header .navTargetWrap .navTarget__inner .list__item:hover {
    background: rgba(255, 255, 255, 0.1);
  }
  
  .header .navTargetWrap .navTarget__inner .contact {
    background: #fff;
    border-radius: 5vw;
    color: var(--col_primary);
    display: grid;
    place-items: center;
    font-size: 2.5vw;
    margin-top: 4vw;
    margin-inline: auto;
    padding-block: 2.5vw;
    width: 80%;
    transition: background 0.3s ease;
  }
  
  .header .navTargetWrap .navTarget__inner .contact:hover {
    background: #f5f6f7;
  }
  
  .header .navTargetWrap .navTarget__inner .contact span {
    padding-left: 4vw;
    position: relative;
  }
  
  .header .navTargetWrap .navTarget__inner .contact span:before {
    background: url(../images/common/icon_contact.svg) center/contain no-repeat;
    content: "";
    filter: invert(76%) sepia(100%) saturate(3111%) hue-rotate(350deg) brightness(90%) contrast(95%);
    height: 3vw;
    position: absolute;
    top: 50%;
    left: 0;
    translate: 0 -50%;
    width: 3vw;
  }
  
  .header .navTargetWrap .navTarget__inner .privacy {
    color: #fff;
    display: block;
    font-size: 1.8vw;
    margin-top: 3vw;
    margin-inline: auto;
    width: 80%;
    text-align: center;
  }
}

/* ==========================================================================
   Enhanced Sticky Header Effects
   ========================================================================== */

/* Smooth scroll behavior with proper padding for sticky header */
html {
  scroll-behavior: smooth;
}

@media (min-width: 1440px) {
  html {
    scroll-padding-top: 117px;
  }
}

@media (min-width: 768px) and (max-width: 1439px) {
  html {
    scroll-padding-top: 8.13vw;
  }
}

@media (max-width: 767px) {
  html {
    scroll-padding-top: 21.61vw;
  }
}

/* Enhanced header with better sticky effects */
.header {
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

/* Logo animation on scroll */
.header__inner .logo {
  transition: transform 0.3s ease;
}

.header.scrolled .header__inner .logo {
  transform: scale(0.9);
}

/* Navigation items hover effects */
.header__inner .nav__item {
  transition: all 0.3s ease;
}

.header__inner .nav__item:hover {
  transform: translateY(-2px);
}

/* ==========================================================================
   JavaScript Enhancement Fallbacks
   ========================================================================== */

/* Fallback for no-js users */
.no-js .navTrigger {
  display: none !important;
}

.no-js .nav.only-pc {
  display: flex !important;
}

/* Smooth transitions for all interactive elements */
* {
  scroll-behavior: smooth;
}

/* Focus states for accessibility */
.navTrigger:focus-within {
  outline: 2px solid var(--col_primary);
  outline-offset: 2px;
}

.nav__item:focus {
  outline: 2px solid var(--col_primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .header {
    border-bottom: 2px solid #000;
  }
  
  .navTrigger .bar {
    background: #000;
  }
  
  .navTargetWrap .navTarget {
    background: #000;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .header,
  .header__inner .logo,
  .header__inner .nav__item,
  .navTrigger,
  .navTrigger .bar,
  .navTargetWrap .bg,
  .navTargetWrap .navTarget {
    transition: none !important;
    animation: none !important;
  }
}