@charset "UTF-8";
/* CSS Document (ハンバーガーメニュー) */

.hamburger_menu{
	font-family: "Noto Serif JP", serif;
}

/*アイコン*/
#nav_toggle{
  position: fixed;
  top: 10px;
  right: 0;
  height: 50px;
  width: 100px;
  cursor: pointer;
  z-index: 999;
/*  background: #775635;*/
  display: none;
  border-radius: 0 0 0 5px;
}
#nav_toggle > span{
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  width: 30px;
  height: 20px;
}

/* ------ハンバーガーアイコン-------- */
.hamburger_icon {
  display: block;
  position: relative;
  width: 30px;
  height: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hamburger_icon span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: #fff; /* ← お好みの色でOK */
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ------メニュー開いたときのハンバーガーアイコン変形------ */
.open .hamburger_icon span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.open .hamburger_icon span:nth-child(2) {
  opacity: 0;
}

.open .hamburger_icon span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}



/*中身*/
.hamburger_nav {
    background: #0A0A0A;
    background-repeat: no-repeat;
    background-size: cover;
    position: fixed;
    height: 100vh;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 990;
    text-align: center;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.6s ease, visibility 0.6s ease;
    padding: 120px 0;
    overflow-y: scroll;
    overflow-x: hidden;
}
.hamburger_nav::before{
    content: '';
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background: #111;
    opacity: 0.5;
    z-index: -1;
}
.hamburger_nav ul{
  margin-bottom: 20px;
}
.hamburger_nav ul li a {
	display: block;
	transition: 0.1s;
	font-size: 1.1rem;
	margin-bottom: 20px;
	position: relative;
	padding-bottom: 3px;
    color:#fff;
}
.hamburger_nav ul li a::after{
	content: '';
	width: 250px;
	height: 1.5px;
	display: inline-block;
	background:#fff;
	position: absolute;
	bottom: 0;
	left: calc(50% - 120px);
	
}
.hamburger_nav a span:not(.m_contact span){
    display: block;
    text-align: center;
    font-size: 0.8em;
    /*  text-transform: uppercase;*/
    color: #fff;
    position: relative;
    top:5px;
}
.hamburger_nav a:hover span:not(.m_contact span){
 
}
.hamburger_nav ul li{
  opacity: 0;
  transform: translateX(200px);
  transition: transform 0.6s ease, opacity 0.2s ease;
}
.hamburger_nav ul li:nth-child(2) {
  transition-delay: 0.15s;
}
.hamburger_nav ul li:nth-child(3) {
  transition-delay: 0.3s;
}
.hamburger_nav ul li:nth-child(4) {
  transition-delay: 0.45s;
}
.hamburger_nav ul li:nth-child(5) {
  transition-delay: 0.6s;
}
.hamburger_nav ul li:nth-child(6) {
  transition-delay: 0.75s;
}
.hamburger_nav ul li:nth-child(7) {
  transition-delay: 0.9s;
}


.hamburger_nav .m_contact{
  opacity: 0;
  transform: translateX(200px);
  transition: transform 0.6s ease, opacity 0.2s ease;
}

.mbtn a{
	display: block;
    border: 1px solid #fff;
    text-align: center;
    width: 30%;
    padding: 15px 0;
    letter-spacing: 0.08em;
	margin: auto;
    font-size: 0.8rem;
    color: #fff;
    transition: all .5s ease;
}

/*ホバー*/
.hamburger_nav ul li a:hover{
  opacity: 0.6;
}


/* open */
.open{
  overflow: hidden;
}
.open .hamburger_nav{
  visibility: visible;
  opacity: 1;
}
.open .hamburger_nav li{
  opacity: 1;
  transform: translateX(0);
  transition: transform 1s ease, opacity 0.9s ease;
}
.open .hamburger_nav .m_contact{
  opacity: 1;
  transform: translateX(0);
  transition: transform 2s ease, opacity 3s ease;
}
/* グリッド背景 */
.fx-grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.fx-grid::before,
.fx-grid::after {
  content: "";
  position: absolute;
  inset: -20%;
  background:
    /* 縦線 */
    repeating-linear-gradient(90deg, rgba(255,255,255,0.06) 0 1px, transparent 1px 80px),
    /* 横線 */
    repeating-linear-gradient(0deg, rgba(255,255,255,0.06) 0 1px, transparent 1px 80px);
  transform: rotate(-15deg);
  animation: grid-move 18s linear infinite;
}

/* 2枚目で奥行き感 */
.fx-grid::after {
  opacity: 0.6;
  filter: blur(0.3px);
  background:
    repeating-linear-gradient(90deg, rgba(255,255,255,0.08) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.08) 0 1px, transparent 1px 40px);
  animation-duration: 36s;
  transform: rotate(-15deg) scale(1.1);
}

/* ビネット効果で中央を暗く */
.fx-grid::before {
  box-shadow: inset 0 0 200px 120px rgba(0,0,0,0.75);
}

@keyframes grid-move {
  0% {
    transform: rotate(-15deg) translateX(0);
  }
  100% {
    transform: rotate(-15deg) translateX(160px);
  }
}
/*ブレイクポイントのみ変更*/
@media (max-width: 960px){
  .hamburger_menu #nav_toggle{
    display: block;
    top:22px;
  }
}


.m_nav_child{
	position: relative;
}

.nav_trigger::before{
	content:'';
	position: absolute;
	right: -80px;
    top: 30px;
    width: 10px;
    height: 10px;
    border-top: 2px solid #fff;
    border-right: 2px solid #fff;
    transform: rotate(135deg);
}

.nav_trigger.m_open::before{
	transform: rotate(-45deg);
}
.nav_trigger.m_open{
	pointer-events: auto;
}
.nav_trigger.m_open .m_nav_child_item li a{
	pointer-events: auto;
}
.m_nav_child_item{
  max-height: 0;
  overflow: hidden;
  padding: 0;
  margin: 0;
  transition: max-height 0.3s ease;
	
}
.m_nav_child.open .m_nav_child_item {
  max-height: 500px; /* 十分大きい値を設定 */
}

.nav_child .m_nav_child_item li{
	font-size: 1.1rem;
}
.nav_child .m_nav_child_item li a{
	font-size: 1.1rem;
	padding-bottom: 10px;
	margin-bottom: 0;
	pointer-events: auto;
}

.nav_trigger {
  display: block;
  transition: 0.1s;
  font-size: 1.1rem;
  position: relative;
  padding-bottom: 3px;
  color: #fff;
  margin: 0 auto 20px;
}
.nav_trigger::after {
  content: '';
  width: 250px;
  height: 1.5px;
  display: inline-block;
  background: #fff;
  position: absolute;
  bottom: 0;
  left: calc(50% - 120px);
}
.nav_trigger:hover{
  opacity: 0.6;
}
.nav_trigger .en{
  display: block;
  text-align: center;
  font-size: 0.8em;
  /* text-transform: uppercase; */
  color: #fff;
  position: relative;
  top: 5px;
}


/*---m_nav_childのアンダーバー----*/
ul.m_nav_child_item li > a::after{
  content: '';
  width: 180px;
  margin: auto;
  height: 1px;
  display: inline-block;
  background-image: linear-gradient(to right, #000, #000 3px, transparent 3px, transparent 8px);
  background-size: 5px 1px;
  background-repeat: repeat-x;
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}
@media (max-width: 960px) {
  .m_nav_child_item {
    display: none; /* 高さをゼロにして余白消す */
  }

  /* 開くときだけ表示 */
  .m_nav_child.m_open .m_nav_child_item {
    display: block;
  }
}