/* ===== Reset ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
img { display: block; max-width: 100%; height: auto; }

/* ===== Base ===== */
body {
  font-family: "Noto Sans JP", "Inter", sans-serif;
  color: #222;
  background: #fff;
  line-height: 1.8;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 80px;
}

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  background: #fff;
  border-bottom: 1px solid #e0e0e0;
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}
.logo { height: 48px; width: auto; }
.nav a {
  margin-left: 32px;
  color: #222;
  text-decoration: none;
  transition: color 0.2s;
}
.nav a:hover { color: #5a7aa0; }

/* ===== Section Titles ===== */
.section-title {
  font-size: 24px;
  margin: 80px 0 24px;
  letter-spacing: 0.05em;
}

/* ===== Release Section ===== */
.release { display: flex; align-items: center; gap: 40px; flex-wrap: wrap; }
.release-img {
  width: 300px; height: 300px; object-fit: cover; border: 1px solid #e0e0e0;
}
.btn-detail {
  display: inline-block; color: #5a7aa0; text-decoration: none;
  border-bottom: 1px solid #5a7aa0; transition: color 0.2s;
}
.btn-detail:hover { color: #36536e; }

/* ===== Grid (Discography) ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 120px;
}
.card {
  text-decoration: none;
  color: #222;
  text-align: center;
}
.card-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  margin-bottom: 12px;
  border: 1px solid #e0e0e0;
}
.card-title { font-size: 16px; }
.card:hover .card-title { color: #5a7aa0; text-decoration: underline; }

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 40px 0;
  background: #fafafa;
  border-top: 1px solid #e0e0e0;
}
.footer p {
  font-size: 13px;
  color: #555;
  margin-bottom: 8px;
}
.privacy-link {
  font-size: 13px;
  color: #5a7aa0;
  text-decoration: none;
}
.privacy-link:hover { text-decoration: underline; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  body { padding: 0 40px; }
  .nav a { margin-left: 24px; }
}
@media (max-width: 768px) {
  body { padding: 0 20px; }
  .header-inner { flex-direction: column; align-items: flex-start; }
  .logo { height: 32px; margin-bottom: 8px; }
  .nav a { margin-left: 0; margin-right: 16px; font-size: 14px; }
  .release { flex-direction: column; align-items: center; text-align: center; }
  .release-img { width: 240px; height: 240px; }
  .section-title { font-size: 20px; margin: 60px 0 20px; }
}