/* ===== Reset ===== */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: #000;
  color: #fff;
  font-size: 14px;
}
html, body, main {
  scroll-behavior: smooth;
}
a{
  text-decoration: none;
}
/* ===== Mobile First ===== */
.pc-layout {
  display: block;
}

.mobile-frame {
  background: #0b0b12;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  padding: 16px;
  background: rgba(0,0,0,.6);
  text-align: center;
  z-index: 10;
}



/* Hero */
.hero {
  min-height: 100vh;
  padding: 120px 24px;
  text-align: center;
  background-image: linear-gradient(rgba(0,0,0,0.7),rgba(0,0,0,0.7)),url("../image/top.png");
  background-position: center;
  vertical-align: middle;
  display: flex;
  align-items: center;
  .hero-inner{
    flex-basis: 100%;
  }
  img{
    max-width: 500px;
  }
}

.catch {
  font-size: 40px;
  line-height: 1.1;
  color: #0ff;
  text-shadow: 0 0 20px #0ff;
}

.sub {
  margin-top: 16px;


    filter: drop-shadow(0 0 4px #ff00b7)
          drop-shadow(0 0 8px #ff00b7);
}

.date {
  margin-top: 24px;
  font-size: 14px;
}

.btn {
  display: inline-block;
  margin-top: 16px;
  padding: 12px 24px;
  border: 1px solid #0ff;
  color: #0ff;
  text-decoration: none;
  background-color: #000;
}

.btn.yellow{
  position: relative;

  overflow: hidden;
  z-index: 0;
  cursor: pointer;
  border-color: #ff0;
  color: #ff0;
  &::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 0%;
  background: #ff0;
  z-index: -1;
  transition: height 0.4s ease;

}
&:hover::before {
  height: 100%;
}
&:hover {
  color: #000;
}
}

.btn.blue{
  position: relative;

  overflow: hidden;
  z-index: 0;
  cursor: pointer;
  border-color: #0ff;
  color: #0ff;
  &::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 0%;
  background: #0ff;
  z-index: -1;
  transition: height 0.4s ease;


}
&:hover::before {
  height: 100%;
}
&:hover {
  color: #000;
}
}

.btn.pink{
  position: relative;

  overflow: hidden;
  z-index: 0;
  cursor: pointer;
  border-color: #ff00ff;
  color: #ff00ff;
  &::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 0%;
  background: #f0f;
  z-index: -1;
  transition: height 0.4s ease;

}
&:hover::before {
  height: 100%;
}
&:hover {
  color: #000;
}
}




/* Section */
.section {
  padding: 96px 24px;
}

.section h2 {
  margin-bottom: 24px;
  letter-spacing: -.03em ;
  font-size: 4rem;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
}

.section img{
  width: calc(100% + 48px);
  margin: 0 -24px;
}
/* Grid */
.card-grid {
  display: grid;
  gap: 16px;

}

.stack-grid {
  display: grid;
  border-top:  1px #aaa solid;
  margin: 0 -24px;
  padding:0 24px;

}

.artist-card{
  font-size: 2rem;
  border-bottom: 1px #fff solid;
  margin: 0 -24px;
  padding:5px 24px;

}
.artist-card {
  position: relative;
  font-size: 2rem;
  color: #fff;
  border-bottom: 1px solid #aaa;
  margin: 0 -24px;
  padding: 5px 24px;
  overflow: hidden;
  z-index: 0;
  cursor: pointer;
  &.yellow::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 0%;
  background: #ff0;
  z-index: -1;
  transition: height 0.4s ease;
}


  &.blue::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 0%;
  background: #0ff;
  z-index: -1;
  transition: height 0.4s ease;
}
  &.pink::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 0%;
  background: #f0f;
  z-index: -1;
  transition: height 0.4s ease;
}
&:hover::before {
  height: 100%;
}

}





/* 文字色を反転 */
.artist-card span {
  position: relative;
  transition: color 0.4s ease;
}

/* hover時に黒文字 */
.artist-card:hover {
  color: #000;
}

.ticket-card,
.stage-card {
  padding: 24px;
  border: 1px solid #333;
  text-align: center;
}

.ticket-card{
  text-align: left;
}

/* .artist-card:hover {
  box-shadow: 0 0 20px rgba(255,0,255,.5);
} */

.supple{
  font-size: 80%;
}
.oneday{
  border-color: #ffee00;
  
  a{
    border-color: #ffee00;
  color: #ffee00;
  }
}

.twoday{
  border-color: #00ffff;
  
  a{
    border-color: #00ffff;
  color: #00ffff;
  }
}

.vip {
  border-color: #ff00ff;
  
  a{

  }
}

/* Tabs */
.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.tab {
  flex: 1;
  padding: 8px;
  background: none;
  border: 1px solid #0ff;
  color: #0ff;
}

.tab.active {
  background: #0ff;
  color: #000;
}

.timetable p {
  border-bottom: 1px solid #333;
  padding: 12px 0;
}


/* Stage */
.stage-grid {
  display: grid;
  gap: 16px;
}

/* Footer */
.footer {
  padding: 48px 24px;
  text-align: center;
  border-top: 1px solid #333;
  font-size: 12px;
}

/* Utility */
.hidden {
  display: none;
}

iframe{
filter: grayscale(1);
  width: calc(100% + 48px);
  margin: 0 -24px;
  }

/* ===== PC Layout ===== */
.side-menu,
.side-bg {
  display: none;
}

@media (min-width: 1024px) {

  body {
    overflow: hidden;
  }

  .pc-layout {
    display: grid;
    grid-template-columns: 1fr 220px 390px 1fr;
    height: 100vh;
  }

  .side-menu {
    grid-column: 2;
    display: flex;
    align-items: center;
    padding: 40px;
  }

  .side-menu nav {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .side-menu a {
    color: #0ff;
    text-decoration: none;
    font-size: 12px;
    letter-spacing: .2em;
  }

  .mobile-frame {
    grid-column: 3;
    width: 390px;
    height: 100vh;
    overflow-y: auto;
    box-shadow: 0 0 40px rgba(0,255,255,.25);
  }

  .side-bg {
    grid-column: 4;
    display: block;
    background:
      radial-gradient(circle at center, rgba(255,0,255,.2), transparent 70%),
      #000;
  }
    header {
    display: none;
  }
}

  body {
  }
  .stalker {
    position: fixed;
    top: 0;
    left: 0;
    width: 120px;
    height: 120px;
    pointer-events: none;
    transform: translate(-50%, -50%);
    mix-blend-mode: difference;
  }

  .rotate {
    animation: spin 12s linear infinite;
    transform-origin: center;
  }

  @keyframes spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
  }

  text {
    fill: white;
    font-size: 14px;
    letter-spacing: 3px;
  }

  .menu-toggle {
  display: none;
}

/* ハンバーガーアイコン */
.hamburger {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 24px;
  height: 18px;
  cursor: pointer;
  z-index: 20;
}

.hamburger span {
  display: block;
  height: 2px;
  background: #0ff;
  margin-bottom: 6px;
  transition: .3s;
}

/* メニュー本体 */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: #000;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 24px;
  opacity: 0;
  pointer-events: none;
  transition: .3s;
  z-index: 15;
}

.mobile-nav a {
  color: #0ff;
  font-size: 18px;
  letter-spacing: .2em;
  text-decoration: none;
}

/* 開閉制御 */
.menu-toggle:checked ~ .mobile-nav {
  opacity: 1;
  pointer-events: auto;
}

/* アイコン変形 */
.menu-toggle:checked + .hamburger span:nth-child(1) {
  transform: rotate(45deg) translateY(11px);
}

.menu-toggle:checked + .hamburger span:nth-child(2) {
  opacity: 0;
}

.menu-toggle:checked + .hamburger span:nth-child(3) {
  transform: rotate(-45deg) translateY(-11px);
}

/* PCでは非表示 */
@media (max-width: 1023px) {

  .stalker{
    display: none;
  }
}

/* ===== Contact Page ===== */



.contact-text {
  margin-bottom: 32px;
  font-size: 14px;
  line-height: 1.8;
  opacity: .85;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-form label {
  display: flex;
  flex-direction: column;
  font-size: 12px;
  letter-spacing: .1em;
  gap: 8px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  background: #000;
  border: 1px solid #333;
  color: #fff;
  padding: 12px;
  font-size: 14px;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  outline: none;
  border-color: #0ff;
}

/*ラインナップ モーダル*/

.artist-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.85);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: .3s;
  z-index: 30;
}

.artist-modal:target {
  opacity: 1;
  pointer-events: auto;
}

.artist-modal__content {
  max-width: 90%;
  background: #000;
  border: 1px solid #0ff;
  padding: 24px;
  text-align: center;
}

.artist-modal__content img {
  width: 100%;
  height: auto;
  margin-bottom: 16px;
}

/* 背景クリック用オーバーレイ */
.artist-modal__close {
  position: absolute;
  inset: 0;
  cursor: pointer;
}


.caption {
  font-size: 24px;
  line-height: 1.6;
  font-family: 'Inter', sans-serif;
}