/* ===== ヒーローセクション ===== */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent; /* ← 透明に変更 *
  min-height: 100vh; /* 画面いっぱいに高さを確保 */
}
.hero-logo {
  text-align: center;
}
.hero-logo img {
  max-width: 300px;
  width: 80%;
  height: auto;
}

/* ===== ボタン (LINE001スタイル適用 - ダークテーマ) ===== */
/* ===== サイバーボタンデザイン ===== */
.btn {
  position: relative;
  display: flex;
  justify-content: space-around;
  align-items: center;
  margin: 40px auto;
  max-width: 200px;
  padding: 14px 28px;
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(74, 144, 226, 0.25);
  border-left: 2px solid #4a90e2;
  clip-path: polygon(
    0 0,
    100% 0,
    100% calc(100% - 7px),
    calc(100% - 7px) 100%,
    0 100%
  );
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.btn::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  width: 7px;
  height: 7px;
  background: #4a90e2;
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  transition: all 0.3s ease;
}

.btn:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(74, 144, 226, 0.4);
  color: #6bb0ff;
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 0 20px rgba(74, 144, 226, 0.2);
  opacity: 1;
}

.btn:hover::after {
  background: #6bb0ff;
}

.btn:active {
  transform: translateY(0);
  transition: transform 0.1s ease;
}

/* ===== サイバーSNSボタン ===== */
.social-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 40px 0;
  align-items: center;
}

.social-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 0 auto;
  max-width: 240px;
  width: 100%;
  padding: 14px 28px;
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  clip-path: polygon(
    0 0,
    100% 0,
    100% calc(100% - 7px),
    calc(100% - 7px) 100%,
    0 100%
  );
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.social-btn::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  width: 7px;
  height: 7px;
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  transition: all 0.3s ease;
}

/* LINEボタン */
.line-btn {
  border-left: 2px solid #06c755;
}

.line-btn::after {
  background: #06c755;
}

.line-btn:hover {
  background: rgba(6, 199, 85, 0.08);
  border-color: rgba(6, 199, 85, 0.4);
  color: #a0ffc8;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 0 20px rgba(6, 199, 85, 0.3);
}

/* Instagramボタン */
.instagram-btn {
  border-left: 2px solid #e1306c;
}

.instagram-btn::after {
  background: #e1306c;
}

.instagram-btn:hover {
  background: rgba(225, 48, 108, 0.08);
  border-color: rgba(225, 48, 108, 0.4);
  color: #ffb8d9;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 0 20px rgba(225, 48, 108, 0.3);
}

/* 共通ホバー効果 */
.social-btn:hover {
  transform: translateY(-2px);
}

.social-btn:hover::after {
  transform: scale(1.1);
}

.social-btn:active {
  transform: translateY(0);
  transition: transform 0.1s ease;
}

.social-btn svg {
  flex-shrink: 0;
  filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.3));
  transition: all 0.3s ease;
}

.social-btn:hover svg {
  filter: drop-shadow(0 0 12px currentColor);
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    ellipse at center,
    rgba(74, 144, 226, 0.05) 0%,
    transparent 60%
  );
  pointer-events: none;
  z-index: 1;
}

.hero-logo {
  position: relative;
  z-index: 2;
}

.scroll-indicator {
  position: absolute;
  z-index: 2;
}