@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@500;700&family=Noto+Sans+JP:wght@400;700&display=swap');

:root {
  --silver1: #5FEADF;
  --silver2: #D0F8BD;
  --silver3: #F5D888;
  --silver4: #F2F0EC;
  --silver5: #BCC3BF;
  --text: #222;
  --bg: #fff;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Noto Sans JP', sans-serif;
  overflow-x: hidden;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 8%;
  position: fixed;
  width: 100%;
  top: 0;
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--silver5);
  z-index: 10;
}
/* PCでは非表示 */
.header {
  display: none;
}

/* スマホでは表示 */
@media (max-width: 768px) {
  .header {
    display: flex;
  }
}

.logo {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.5rem;
  letter-spacing: 1.5px;
  color: var(--silver1);
}
.nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
}
.nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  transition: 0.3s;
}
.nav a:hover {
  color: var(--silver1);
  text-shadow: 0 0 8px var(--silver2);
}

/* Hero */
.hero {
  height: 30vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: radial-gradient(circle at 50% 40%, var(--silver4), var(--bg));
  color: var(--text);
}
.hero-content h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 3rem;
  letter-spacing: 2px;
  color: var(--silver5);
  text-shadow: 0 0 15px var(--silver1);
}
.hero-content p {
  color: #555;
  margin-top: 10px;
}

/* Section */
section {
  padding: 20px 5%;
  text-align: center;
  position: relative;
}
h2 {
  font-family: 'Orbitron', sans-serif;
  color: var(--silver1);
  margin-bottom: 20px;
  text-shadow: 0 0 8px var(--silver2);
}
p {
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.7;
}

/* News */
.news-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-top: 15px;
}
.news-card {
  width: 220px;
  background: linear-gradient(145deg, #fff, var(--silver4));
  border: 1px solid var(--silver5);
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(100,100,100,0.1);
  padding: 20px;
  transition: 0.4s ease;
}
.news-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 0 25px var(--silver1);
}
.news-card .date {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.85rem;
  color: var(--silver1);
}
.news-card p {
  margin-top: 10px;
  color: var(--text);
}

/* Links */
.links {
  background: linear-gradient(180deg, var(--bg), var(--silver4));
}
.link-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 10px;
}
.link-list a {
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--silver5);
  padding: 12px 28px;
  border-radius: 30px;
  background: rgba(255,255,255,0.7);
  transition: 0.4s ease;
  font-family: 'Orbitron', sans-serif;
}
.link-list a:hover {
  background: var(--silver1);
  color: #fff;
  box-shadow: 0 0 20px var(--silver1);
}

/* Footer */
.footer {
  text-align: center;
  padding: 10px;
  color: #666;
  font-size: 0.8rem;
  border-top: 1px solid var(--silver5);
}
html, body {
  height: 100%;
  padding: 0;
  margin: 0;
}

/* 背景キャンバスを正しく固定 */
#silverCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

/* フッター下の隙間を完全にゼロ化 */
footer, .footer {
  margin-bottom: 0;
  padding-bottom: 0;
}
body::after {
  content: none;
}