:root{
  --main-bg: #0a0a0a;
  --sub-bg: #1f1f1f;
  --main-color: #00fff2;
  --accent-color: #04c5e7;
  --text-color: #ffffff;
  --text-color-invert: #000000;
  --sub-color: #cccccc;
  --high-light-color: #39FF14;
  --transparent: #00000000;
}

a{
  color: inherit;
  text-decoration: none; /* 下線を消す */
}

*{
  font-weight: 400;
}

p{
  font-size: 1.2rem;
}

/*見出し*/
h1{
  margin: 50px 30px 20px 30px;
  font-size: 3.5rem;
}
h2{
  margin: 50px 50px 50px 50px;
  padding: 30px 0px;
  font-size: 2.5rem;
  background-image: linear-gradient(to right, var(--transparent), rgba(0, 255, 234, 0.781), var(--transparent));
}
h3{
  font-size: 1.75rem;
  margin: 0 0 10px 0;
  padding: 0 0 0 10px;
  border-left: 5px solid var(--accent-color);
}

body {
  margin: 0;
  padding: 0;
  /*font-family: "WDXL Lubrifont JP N", sans-serif;*/
  font-weight: 1;
  color: var(--text-color);
  margin: 0;
  background-color: var(--sub-bg);
  /*背景グリッド*/
  background-image:
    linear-gradient(to right, var(--transparent), rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0.75), var(--transparent)),
    linear-gradient(rgba(0, 238, 255, 0.2) 1px, transparent 3px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.2) 1px, transparent 3px);
  background-size: 100% 100%, 50px 50px, 50px 50px;
}

body::after{
  background-image: linear-gradient(to right, var(--transparent), rgba(0, 255, 234, 0.781), var(--transparent));
}

/*ヘッダ*/
.header {
  display: flex;
  justify-content: space-between;
  padding: 10px 0px;
  position: fixed;
  top: 0;
  width: 100%;
  background: var(--sub-bg);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  z-index: 1000;
  transform: translateY(-100%);
  transition: transform 0.3s ease;
}
.header.visible {
  transform: translateY(0);
}

.header .site-logo{
  padding: 0 50px;
  min-width: 500px;
  width: 25%;
  background-size: cover;
}

.header-menu{
  padding: 0 50px;
  display: flex;
  margin: 20px 0 0 0;
  list-style: none;
}

.header-menu li{
  padding: 0 10px;
  font-size: 1.5rem;
}
.header-menu li rt{
  font-size: 1.0rem;
}







.hero {
  /*background: radial-gradient(circle at center, #111 0%, #000 100%);*/
  color: var(--main-color);
  text-align: center;
  padding: 50px 20px;
}

.hero .site-logo {
  width: 80%;
}

.hero .subtitle {
  margin: 0 0 50px 0;
  font-size: 1.5rem;
  color: var(--text-color);
}

.cta-button {
  padding: 20px 50px;
  color: var(--text-color-invert);
  background-color: var(--main-color);
  text-decoration: none;
  font-weight: bold;
  border-radius: 6px;
  font-size: 1.25rem;
  transition: background 0.3s, transform 0.3s;
}

.cta-button:hover {
  background-color: #00cccc;
  transform: scale(1.05);
}

.section {
  padding: 150px 0px 100px 0;
  text-align: center;
}

.cards {
  margin: 0 auto;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;

}

.card {
  margin: 30px auto;
  padding: 50px 30px;
  background-color: #1f1f1f;
  border-radius: 10px;
  max-width: 1000px;
  box-shadow: 0 0 10px rgba(0,255,255,0.2);
  transition: transform 0.3s;
}

.card:hover {
  transform: translateY(-10px);
}

.service{
  flex: 1;
  text-align: left;
  padding: 0 20px 0 20px;
}

.products{
  display: flex; 
  justify-content: center; 
  margin: 50px 0 0 0;
}

.product{
  flex: 1;
  position: relative;
  max-width: 350px;
  width: 200px;
  height: 200px;  
  margin: 0 20px 0 20px;
  color: var(--main-color);
  transition: transform 0.3s;
}

.product p{
  font-size: 18px;
  line-height: 1.4;
}

.product::before,
.product::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  border: 3px solid #ffffff;
}

.product::before {
  top: 0;
  left: 0;
  border-right: none;
  border-bottom: none;
}

.product::after {
  bottom: 0;
  right: 0;
  border-left: none;
  border-top: none;
  
}

/*製品1 - おはなしつくーる*/
.product.pd-01{
  transition: 
      transform 0.3s,
      background-color 0.5s ease,
      color 0.5s ease,
      font-family 0.5s ease;
      
}
.product.pd-02{
  transition: 
      transform 0.3s,
      background-color 0.5s ease,
      color 0.5s ease,
      font-family 0.5s ease;
}
.product.pd-03{
  transition: 
      transform 0.3s,
      background-color 0.5s ease,
      color 0.5s ease,
      font-family 0.5s ease;
}
.product.pd-04{
  transition: 
      transform 0.3s,
      background-color 0.5s ease,
      color 0.5s ease,
      font-family 0.5s ease;
}
.product.pd-05{
  transition: 
      transform 0.3s,
      background-image 0.5s ease,
      background-color 0.5s ease,
      color 0.5s ease,
      font-family 0.5s ease;
}

/*製品1 - おはなしつくーる*/
.product.pd-01:hover{
  transform: scale(1.15);
  color: rgb(255, 255, 255);
  background-color: rgba(200, 253, 255, 0.9);
  font-family: 'Kosugi Maru', sans-serif;
  /*
  text-shadow:
  0 0 2px rgb(120, 255, 255),
  0 0 5px rgb(120, 255, 255),
  0 0 10px rgb(120, 255, 255);
  */

  text-shadow:
      -1px -1px 0 #664e4d,
      1px -1px 0 #664e4d,
      -1px 1px 0 #664e4d,
      1px 1px 0 #664e4d;
}

.product.pd-01:hover .product-name{
  margin: 30px 0 0 0; 
}
.product.pd-01:hover .product-description{
  margin: 25px 0 0 0; 
}
.product.pd-01:hover .product-name span:nth-child(1){
  color: #ffdf4e;
}
.product.pd-01:hover .product-name span:nth-child(2){
  color: #7bcaff;
}
.product.pd-01:hover .product-name span:nth-child(3){
  color: #ffa0a0;
}
.product.pd-01:hover .product-name span:nth-child(4){
  color: #aeff7f;
}
.product.pd-01:hover .product-name span:nth-child(5){
  color: #7bcaff;
}
.product.pd-01:hover .product-name span:nth-child(6){
  color: #aeff7f;
}
.product.pd-01:hover .product-name span:nth-child(7){
  color: #7bcaff;
}

/*製品2 - 優雅変換*/
.product.pd-02:hover{
  transform: scale(1.15);
  color: rgb(82, 57, 29);
  background-color: rgba(255, 236, 184, 0.9);
  font-family: 'Noto Serif JP', serif;
}

/*製品3 - 蘇神*/
.product.pd-03:hover{
  transform: scale(1.15);
  color: rgb(139, 41, 41);
  background-color: rgba(252, 231, 204, 0.9);
  font-family: "Yuji Syuku", serif;
}

/*製品4 - THE POSTER*/
.product.pd-04:hover{
  transform: scale(1.15);
  color: rgb(255, 255, 255);
  background-color: rgba(248, 72, 49, 0.9);
  font-family: 'Orbitron', sans-serif;
}

.product.pd-04.product-description{
  transition: 
      color 0.5s ease,
}
.product.pd-04:hover .product-description{
  color: rgb(19, 33, 70);
}

/*製品5 - Image2HTML Gemini*/
.product.pd-05:hover{
  transform: scale(1.15);
  color: rgb(224, 231, 255);
  background-color: rgb(59, 130, 246);
  font-family: 'Orbitron', sans-serif;
}


.product h4{
  font-size: 30px;
  margin: 20px 0;
}

.products-section{
  display: flex;
  margin: 30px auto;
  padding: 50px 0px;
  background-color: #1f1f1f;
  max-width: 1920px;
  box-shadow: 0 0 10px rgba(0,255,255,0.2);
  transition: transform 0.3s;

}

.product-link{
  display: block;
  width: 100%;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

.anchor-inner{
    padding: 10px 20px 10px 20px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 400px;
  margin: 0 auto;
}



input, textarea {
  padding: 12px;
  background-color: #111;
  color: #e0e0e0;
  border: 1px solid #333;
  border-radius: 6px;
}

button {
  padding: 12px;
  background-color: #00ffff;
  color: #000;
  border: none;
  border-radius: 6px;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s;
}

button:hover {
  background-color: #00cccc;
}

footer {
  text-align: center;
  padding: 20px;
  background-color: #111;
  color: var(--sub-color)
}

.background-video {
  width: 60vw;
}

.contact-link {
  display: inline-block;
  width: 250px;
  margin: 20px 0 10px 10px;
  padding: 10px 20px;
  font-size: 1.0rem;
  background-color: var(--main-color);
  color: #000;
  text-decoration: none;
  border-radius: 6px;
  transition: background-color 0.3s, transform 0.3s;
}

.mainhp-link {
  display: inline-block;
  width: 250px;
  margin: 20px 0 10px 10px;
  padding: 10px 20px;
  font-size: 1.0rem;
  background-color: var(--text-color);
  color: #000;
  text-decoration: none;
  border-radius: 6px;
  transition: background-color 0.3s, transform 0.3s;
}


@media (max-width: 1080px) {
.header {
  display: block;
  z-index: 1000;
}
.header.visible {
}

.header .site-logo{
  display: flex;
  margin: 0 auto;
  padding: 0 50px;
  max-width: 100%;
  background-size: cover;
}

.header-menu{
  padding: 0 50px;
  display: flex;
  justify-content: center;
  margin: 20px 0 0 0;
  list-style: none;
}

.header-menu li{
  padding: 0 30px;
  font-size: 1.5rem;
}
.header-menu li rt{
  font-size: 1.0rem;
}
}

/* --- スマホ対応レスポンシブCSS --- */
@media (max-width: 768px) {
  h2{
    margin: 50px 0 50px 0;
  }
  .hero {
    min-height: 220px;
    padding: 0;
  }
  .background-video{
    width: 100%;
  }
  .site-logo {
    left: 12px;
    top: 12px;
    padding: 20px 0;
  }
  .hero-content h1 {
    font-size: 1.5rem;
  }

  .hero-content p {
    font-size: 1rem;
  }
  .cta-button {
    font-size: 1rem;
    padding: 10px 20px;
  }
  #services{
    margin: 50px 0 0 0;
  }
  .cards {
    margin: 0;
  }
  .card {
    display: block;
    margin: 0 auto;
    padding: 50px 10px 20px 10px;
    font-size: 1rem;
  }
  .products{
    display: block;
  }
  .product{
    /*display: none;*/
    width: auto;
    margin: 30px 20px;
    min-height: 160px;
    max-width: none;
    transition: 
    transform 0.3s;
  }
  .section{
    padding: 40px 0;
    transform: none;
  }
  .card:hover{
    transform: none;
  }
  /*
  .card:hover .product{
    display: block;
  }*/

  .header .site-logo{
    display: flex;
    width:auto;
    max-width: 100px;
    margin: 0 auto;
    padding: 0 10px;
    background-size: cover;
  }
  section.section {
  }
  .header-menu li{
    padding: 0 15px;
    font-size: 1.25rem;
  }
  .header-menu li rt{
    font-size: 0.75rem;
  }
  
}

@media (max-width: 480px) {
  .hero {
    min-height: 120px;
  }
  .hero-content h1 {
    font-size: 1rem;
  }
  .site-logo {
  }
  .header-menu{
    padding: 0 10px;
  }
  .header-menu li{
    padding: 0 10px;
    font-size: 1.1rem;
  }
  .header-menu li rt{
    font-size: 0.75rem;
  }

}

/*追加分＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝*/
.neon {
  color: rgba(0, 255, 255, 1);
  text-shadow:
    0 0 2px #0ff,
    0 0 5px rgba(0, 255, 255, 0.5),
    0 0 10px rgba(0, 255, 255, 0.25),
    0 0 30px rgba(255, 255, 255, 0.125);
}
.neon-r {
  color: var(--sub-bg);
  text-shadow:
    0 0 2px #0ff,
    0 0 5px rgba(0, 255, 255, 1),
    0 0 10px rgba(0, 255, 255, 1),
    0 0 30px rgba(255, 255, 255, 0.125);
}