/* ============================================
   05 - Hero Section
   背景: 蒼(#3B82F6, 0.88) → 水色(#00D4FF, 0.80) グラデ
   配色はすべてこの背景に合わせて統一
   ============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* --- 背景 --- */
.hero-background {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  /* [変更] brightness を上げて蒼オーバーレイと自然に馴染む明るさに */
  filter: brightness(0.75) saturate(0.9);
}

/* 3D Canvas背景 */
#hero3d {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

/* [変更] オーバーレイ: 蒼→水色グラデ（3Dが透けるよう透明度を下げる） */
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(0, 20, 210) 0%,
    rgba(0, 40, 230) 100%
  );
  z-index: 2;
}

/* ノイズテクスチャ（変更なし） */
.hero-overlay::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 128px;
}

/* --- 左縦ラインアクセント --- */
.hero-line-left {
  position: absolute;
  left: 60px;
  top: 0;
  bottom: 0;
  width: 3px;
  z-index: 3;
  overflow: hidden;
}

.hero-line-left::before {
  content: "";
  position: absolute;
  inset: 0;
  /* [変更] 背景の蒼に映える白→白系グラデに。水色だと溶け込んで見えないため */
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(255, 255, 255, 0.8) 20%,
    white 50%,
    rgba(255, 255, 255, 0.8) 80%,
    transparent 100%
  );
  animation: heroLineSlide 3s ease-out forwards;
  transform: translateY(-100%);
}

@keyframes heroLineSlide {
  to {
    transform: translateY(0);
  }
}

/* --- メインレイアウト --- */
.hero-inner {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 120px 80px 100px 100px;
  gap: 48px;
}

/* --- テキスト --- */
.hero-text {
  flex: 1;
  color: white;
  max-width: 760px;
}

/* アイブロウ */
.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 32px;
  opacity: 0;
  animation: heroFadeUp 0.7s 0.2s ease forwards;
}

.hero-eyebrow-line {
  width: 40px;
  height: 2px;
  /* [変更] 水色だと背景に溶けるため白に変更 */
  background: rgba(255, 255, 255, 0.9);
  flex-shrink: 0;
}

.hero-eyebrow-text {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  /* [変更] 水色は背景と同化するため白に変更 */
  color: rgba(255, 255, 255, 0.9);
}

/* タイトル */
.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 6.5vw, 5.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  opacity: 0;
  animation: heroFadeUp 0.8s 0.4s ease forwards;
}

.hero-title-line {
  display: block;
  /* [変更] 透過白を少し上げて蒼背景でも視認しやすく */
  color: rgba(255, 255, 255, 0.6);
  font-style: italic;
  font-size: 0.68em;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin-bottom: 4px;
}

.hero-title-main {
  display: block;
  color: white;
}

.hero-title-accent {
  display: block;
  /* [変更] 水色終端だと背景水色に溶けるため、白→薄黄白のグラデに変更 */
  background: linear-gradient(90deg, #ffffff 0%, #e0f7ff 60%, #b3efff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-style: italic;
}

/* サブテキスト */
.hero-subtitle {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  line-height: 1.8;
  /* [変更] 蒼背景に対して白を少し上げてコントラスト確保 */
  color: rgba(255, 255, 255, 0.9);
  margin-top: 32px;
  margin-bottom: 44px;
  max-width: 560px;
  opacity: 0;
  animation: heroFadeUp 0.8s 0.6s ease forwards;
}

.hero-subtitle strong {
  color: white;
  font-weight: 700;
}

.hero-stat-inline {
  display: inline-flex;
  align-items: baseline;
  gap: 3px;
  /* [変更] 背景が蒼なのでインラインバッジは白ベースに変更。水色だと埋もれる */
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 4px;
  padding: 2px 10px;
  font-weight: 800;
  color: white;
  font-size: 1.1em;
}

/* CTA */
.hero-cta {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: heroFadeUp 0.8s 0.8s ease forwards;
}

/* [変更] プライマリボタン: 白地→ホバーで濃紺（蒼背景に白が映える） */
.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 18px 36px;
  background: white;
  color: var(--primary-blue-dark, #0052cc);
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.9375rem;
  font-family: var(--font-body);
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.btn-hero-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  /* [変更] ホバー時: 濃紺ソリッドに（グラデだと蒼背景と混同するため） */
  background: #1e40af;
  opacity: 0;
  transition: opacity 0.3s;
}

.btn-hero-primary:hover::before {
  opacity: 1;
}
.btn-hero-primary:hover {
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.25);
}

.btn-hero-primary span,
.btn-hero-primary svg {
  position: relative;
  z-index: 1;
}

.btn-hero-primary .btn-arrow {
  transition: transform 0.25s ease;
}

.btn-hero-primary:hover .btn-arrow {
  transform: translateX(4px);
}

/* [変更] ゴーストボタン: 背景白10%→透過度を上げてはっきりさせる */
.btn-hero-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 18px 32px;
  background: rgba(255, 255, 255, 0.12);
  color: white;
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9375rem;
  font-family: var(--font-body);
  transition: all 0.25s ease;
  backdrop-filter: blur(8px);
}

.btn-hero-ghost:hover {
  border-color: white;
  background: rgba(255, 255, 255, 0.22);
  transform: translateY(-2px);
}

/* --- フローティング統計バッジ --- */
.hero-stats-float {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex-shrink: 0;
  opacity: 0;
  animation: heroFadeLeft 0.9s 1s ease forwards;
}

/* [変更] stat-badge: 背景を白ベース半透明に。蒼背景でグラスモーフィズムが映える */
.stat-badge {
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(20px);
  border-radius: 12px;
  padding: 20px 28px;
  text-align: center;
  color: white;
  min-width: 160px;
  transition: all 0.3s ease;
}

.stat-badge:hover {
  /* [変更] ホバーで白の透過を上げてメリハリを出す */
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.55);
  transform: translateX(-4px);
}

/* [変更] 数字: 白ソリッド。背景が既に水色なのでグラデより視認性が高い */
.stat-badge-num {
  display: block;
  font-family: var(--font-body);
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1;
  margin-bottom: 6px;
  color: white;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

/* [変更] ディバイダー: 白に変更 */
.stat-badge-divider {
  width: 32px;
  height: 1px;
  background: rgba(255, 255, 255, 0.35);
  margin: 0 auto 6px;
}

.stat-badge-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  /* [変更] 薄すぎるので少し白を上げる */
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 0.05em;
}

/* --- スクロールインジケーター --- */
.scroll-indicator {
  position: absolute;
  bottom: 36px;
  left: 100px;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 14px;
  color: rgba(255, 255, 255, 0.5);
  opacity: 0;
  animation: heroFadeUp 0.8s 1.2s ease forwards;
}

.scroll-track {
  width: 1px;
  height: 48px;
  background: rgba(255, 255, 255, 0.2);
  position: relative;
  overflow: hidden;
  border-radius: 1px;
}

/* [変更] スクロールつまみ: 水色だと背景水色に埋もれるため白に */
.scroll-thumb {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: white;
  border-radius: 1px;
  animation: heroScrollAnim 1.8s ease-in-out infinite;
}

@keyframes heroScrollAnim {
  0% {
    top: -50%;
  }
  100% {
    top: 100%;
  }
}

.scroll-label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
}

/* --- Keyframes --- */
@keyframes heroFadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroFadeLeft {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* --- レスポンシブ --- */
@media (max-width: 1024px) {
  .hero-inner {
    padding: 120px 48px 100px 80px;
  }
  .hero-stats-float {
    display: none;
  }
  .hero-line-left {
    left: 32px;
  }
  .scroll-indicator {
    left: 80px;
  }
}

@media (max-width: 768px) {
  .hero-inner {
    padding: 100px 24px 80px 24px;
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-line-left {
    display: none;
  }
  .scroll-indicator {
    left: 24px;
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .btn-hero-primary,
  .btn-hero-ghost {
    justify-content: center;
    width: 100%;
  }
}