/* カスタムスクロールバー */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

html {
  overflow-y: scroll;
}

/* ハンバーガーメニュー：サイドパネル */
.side-menu {
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.side-menu.active {
  transform: translateX(0);
}

.menu-overlay {
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
}

.menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ほんわか動くオーロラ背景 */
.hero-gradient {
  background: linear-gradient(125deg, #ffffff 0%, #f5f3ff 40%, #fdf2f8 70%, #ffffff 100%);
  background-size: 400% 400%;
  animation: gradient-flow 15s ease infinite;
}

@keyframes gradient-flow {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

/* 浮遊するパーティクル */
.particle {
  position: absolute;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 50%;
  pointer-events: none;
  animation: float-particle 20s linear infinite;
}

@keyframes float-particle {
  0% {
    transform: translateY(100vh) scale(0);
    opacity: 0;
  }

  50% {
    opacity: 0.5;
  }

  100% {
    transform: translateY(-10vh) scale(1.5);
    opacity: 0;
  }
}

/* スクロールアニメーション */
.fade-in-up {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* aboutフェードイン・アウト */
.about-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.5s ease;
}

.about-slide.active {
  opacity: 1;
}

/* メンバーカードのホバーエフェクト */
.member-card {
  transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.member-card:hover {
  transform: translateY(-8px);
  box-shadow:
    0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.member-img-wrap {
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
  transition: clip-path 0.4s ease;
}

.member-card:hover .member-img-wrap {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

.member-card img {
  transition: transform 0.6s scale;
}

.member-card:hover img {
  transform: scale(1.1);
}

/* 幾何学模様の背景アニメーション */
.bg-shapes {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: -1;
  background: linear-gradient(135deg, #f3f4f6 0%, #ffffff 100%);
}

.shape {
  position: absolute;
  background: rgba(99, 102, 241, 0.05);
  animation: float 15s infinite linear;
}

@keyframes float {
  0% {
    transform: translateY(0) rotate(0deg);
  }

  100% {
    transform: translateY(-1000px) rotate(360deg);
  }
}

/* モーダルのアニメーション */
.modal-overlay {
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  transform: scale(0.9) translateY(20px);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-content {
  transform: scale(1) translateY(0);
  opacity: 1;
}

/* スライダー */
.slider-container {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.65, 0, 0.35, 1);
  width: 300%;
}

.slide {
  width: 33.333%;
  flex-shrink: 0;
}

/* テキストのグラデーション */
.text-gradient {
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-image: linear-gradient(to right, #6366f1, #ec4899);
}

/* フィルターとメンバー非表示用 */
.hidden-card {
  display: none !important;
}