@charset "utf-8";

/* ----------変数---------- */
:root {
/* カラー */
--black: #564250;
--white-a: #fefefe80;
--purple: #AF719D;
--blue: #4453A6;
--dark-purple: #AA8DA2;
--dark-blue: #8D93AA;
--light-pink: #EBD5E5;
--gradient: linear-gradient(135deg, #4453a6, #af719d);
--gradient-a: linear-gradient(135deg, #af719d50, #4453a650);

/* フォントファミリー */
--mincho: "Zen Old Mincho", serif;
--gothic: "Zen Kaku Gothic New", sans-serif;
--lic: "Licorice", cursive;
--klee: "Klee One", cursive;

/* ****スマホ:375px, PC:1200px**** */
/* フォントサイズ */
/* 40px~64px */
--fz-ll: clamp(2.5rem, 1.8182rem + 2.9091vw, 4rem);
/* 32px~48px */
--fz-l: clamp(2rem, 1.7727rem + 0.9697vw, 2.5rem);
/* 24px~40px */
--fz-lm: clamp(1.5rem, 1.0455rem + 1.9394vw, 2.5rem);
/* 16px~24px */
--fz-m: clamp(1rem, 0.7727rem + 0.9697vw, 1.5rem);

/* --------------------スペース -------------------*/
/* 72px~96px */
--space: clamp(4.5rem, 3.8182rem + 2.9091vw, 6rem);

}

/* ----------画面幅---------- */
.w-container {
  width: min(92%, 1080px);
  margin: 0 auto;
  padding: 6rem 0;
}
html:has(.k-project-lp) {
  scroll-behavior: smooth;
}
/* 全体 */
.k-project-lp {
  color: var(--black);
  font-family: var(--gothic);
  letter-spacing: .2rem;
  line-height: 1.8;
}
.k-project-lp section {
  scroll-margin-top: 7rem;
}
.br-pc {
  display: none;
}
.br-sp {
  display: block;
}

/* ----------タイトル---------- */
.title {
  font-family: var(--mincho);
  font-size: var(--fz-l);
  font-weight: 400;
  text-align: center;
  margin: 0 auto var(--space);
  position: relative;
  width: fit-content;
}
.title span {
  color: var(--purple);
  font-family: var(--lic);
  font-size: var(--fz-ll);
  line-height: 1;
  display: inline-block;
  transform: rotate(-10deg); 
  position: absolute;
  left: -2rem;
  top: 2rem;
}

/* ----------背景---------- */
.gradient-bg {
  position: relative;
  z-index: 0;
}
/* 擬似要素で背景を描画 */
.gradient-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--gradient);
  /* デフォルトの透明度はカスタム */
  opacity: var(--bg-opacity, 1);
  z-index: -1;
}

/* =====================================
  header
  ===================================== */
.header {
  height: 4rem;
  position: fixed;
  inset: 0;
  z-index: 9997;
  background-color: #ffffff99;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}
.header .w-container {
  padding: 0;
}
.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo img{
  height: 4rem;
  width: auto;
}
/* ----------nav------------- */
#menu-toggle {
  display: none;
}
.nav ul{
  display: flex;
  font-size: clamp(1rem, 1.1818rem + -0.7758vw, 0.6rem);
  height: 100%;
}
.header nav {
  position: fixed;
  top: 0;
  right: 0;
  width: 80%;
  height: 100vh;
  z-index: 9998;
  background-color: var(--dark-purple);
  color: #fff;
  transform: translateX(100%);
  transition: transform .7s ease;
}
.header-nav {
  flex-direction: column;
  gap: 2rem;
  align-items: center;
  justify-content: center;
}
/* ハンバーガーアイコンの設定 */
.menu-btn-wrapper {
  display: inline-block;
  z-index: 9999;
  position: relative;
  width: 3rem;
  height: 3rem;
}
.nav-btn {
  width: 100%;
  height: 100%;
  object-fit: contain;
  position: absolute;
  top: 0;
  left: 0;
  transition: opacity .3s ease;
}
.nav-close {
  opacity: 0;
}
/* アニメーションの設定 */
/* メニューを画面内にスライドイン */
#menu-toggle:checked ~ .nav {
  transform: translateX(0);
}
/* ハンバーガーアイコンを消す */
#menu-toggle:checked ~ .header-right .nav-open {
  opacity: 0;
}
/* Xアイコンを表示する */
#menu-toggle:checked ~ .header-right .nav-close {
  opacity: 1;
}

/* =====================================
  en-button
  ===================================== */
.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.k-project-lp .en-btn {
  width: fit-content;
  padding: .5rem 2rem;
  color: #ffffff99;
  font-weight: 500;
  font-size: 1.5rem;
  background-image: linear-gradient(135deg, #4453a670, #af719d70);
  position: relative;
  margin: .2rem;
  z-index: 1;
  overflow: hidden;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
}
.en-btn::after {
  display: block;
  content: '';
  width: 90%;
  height: 80%;
  z-index: 2;
  border: 1px solid var(--white-a);
  position: absolute;
  margin: auto;
  inset: 0;
}
.k-project-lp .en-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: var(--gradient);
  z-index: -1;
  opacity: 0;
  transition: opacity .5s cubic-bezier(0.5, 0, 0, 0.5);
}
.k-project-lp .en-btn:hover::before {
  opacity: 1;
}
/* ========================================= */
.header .en-btn {
  font-size: 1rem;
}

/* =====================================
  footer
  ===================================== */
.footer {
  background-color: #56425090;
}
.footer .w-container{
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5rem;
  padding-top: 6rem;
}
.footer-logo {
  width: 15rem;
}
.footer-nav {
  flex-wrap: wrap;
}
.footer-nav li {
  padding: 0 1rem;
}
.footer-nav a:hover {
  border-bottom: 1px solid var(--black);
  color: var(--black);
}



/* --------------------------------メディアクエリ---------------------------------*/

@media (min-width: 890px) {
/* =====================================
  header
  ===================================== */
.menu-btn-wrapper {
  display: none;
}
.header nav {
  transform: none; 
  transition: none;
  position: static;
  background-color: transparent;
  color: var(--black);
  height: 100%;
}
.header-nav {
  flex-direction: row;
  gap: 0;
}
.header-nav li {
  letter-spacing: .05rem;
  position: relative;
  padding: .5rem;
}
.header-nav li:not(:last-child){
  border-right: 1px solid #ddd;
}
.header-nav li:hover {
  background-image: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.header-nav li::after{
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: var(--purple);
  opacity: .5;
  transform: scaleX(0);
  transform-origin: center; 
  transition: transform 0.5s cubic-bezier(0.5, 0, 0, 0.5);
}
.header-nav li:hover::after {
  transform: scaleX(1);
}
.k-project-lp .en-btn {
  padding: .5rem 2rem;
  font-size: 1.5rem;
}

}

@media (min-width: 768px) {

.br-sp {
  display: none;
}
.br-pc {
  display: block;
}
.title span{
  left: -4rem;
  top: 1rem;
}

}