/* common.css */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;600;800;900&family=Rajdhani:wght@500;700;900&family=Share+Tech+Mono&display=swap');

:root {
  --bg-dark: #05070a;
  --bg-card: #0d1117;
  --bg-header: #080a0f;
  --color-neon-cyan: #00f0ff;
  --color-neon-pink: #ff007f;
  --color-text-main: #e2e8f0;
  --color-border: #182030;
}

body {
  background-color: var(--bg-dark);
  color: var(--color-text-main);
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  overflow-x: hidden;
  /* サイバーな極小ドット/グリッド背景を薄く乗せる */
  background-image: 
    radial-gradient(rgba(0, 240, 255, 0.04) 1px, transparent 1px),
    radial-gradient(rgba(255, 0, 127, 0.03) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: 0 0, 12px 12px;
}

/* スタイリッシュなスクロールバー */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-neon-cyan), var(--color-neon-pink));
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, #5dfdff, #ff4da6);
}

/* ネオンテキスト効果 */
.text-neon-cyan {
  color: var(--color-neon-cyan);
  text-shadow: 0 0 5px rgba(0, 240, 255, 0.6), 0 0 15px rgba(0, 240, 255, 0.3);
}
.text-neon-pink {
  color: var(--color-neon-pink);
  text-shadow: 0 0 5px rgba(255, 0, 127, 0.6), 0 0 15px rgba(255, 0, 127, 0.3);
}

/* ロゴのネオングラデーション */
.logo-text {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 900;
  letter-spacing: 0.15em;
  background: linear-gradient(90deg, #00f0ff, #ff007f, #00f0ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% auto;
  animation: shine 4s linear infinite;
}

@keyframes shine {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

/* サイバーパンクボタン */
.btn-cyber {
  position: relative;
  background: #0d1117;
  color: #ffffff;
  font-weight: 800;
  font-family: 'Rajdhani', sans-serif;
  letter-spacing: 0.05em;
  border: 1px solid var(--color-neon-cyan);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  text-shadow: 0 0 4px rgba(0, 240, 255, 0.5);
  overflow: hidden;
  text-transform: uppercase;
}

.btn-cyber::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.3), transparent);
  transition: 0.5s;
}

.btn-cyber:hover::before {
  left: 100%;
}

.btn-cyber:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.5), 0 0 25px rgba(255, 0, 127, 0.3);
  border-color: var(--color-neon-pink);
  text-shadow: 0 0 4px rgba(255, 0, 127, 0.5);
}

.btn-cyber:active {
  transform: translateY(1px);
}