/* ===== Base ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #050510;
  --bg-soft: rgba(9, 9, 24, 0.95);
  --accent: #ff4fa3;
  --accent-soft: #ff7ac7;
  --text: #f5f5f7;
  --muted: #a0a0b8;
  --border: rgba(255, 255, 255, 0.08);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Montserrat", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", "Helvetica Neue", sans-serif;
  background: radial-gradient(circle at top, #1b102a 0, #050510 55%, #020208 100%);
  color: var(--text);
  line-height: 1.7;
}

/* ===== Links & Text ===== */
a {
  color: var(--accent-soft);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

a:hover {
  color: var(--accent);
  opacity: 0.9;
}

h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: 0.08em;
}

p {
  color: var(--muted);
}

/* ===== Layout ===== */
.container {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px;
}

main {
  padding-top: 80px;
}

/* ===== Header / Nav ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 50;
  background: rgba(5, 5, 20, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px;
}

.logo a {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--text);
}

.nav-list {
  display: flex;
  gap: 24px;
  list-style: none;
  font-size: 0.9rem;
}

.nav-list a {
  text-transform: uppercase;
  color: var(--muted);
}

.nav-list a:hover {
  color: var(--accent-soft);
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  color: var(--text);
  padding: 96px 0 80px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 10% 0%, rgba(255, 122, 199, 0.28), transparent 55%),
    radial-gradient(circle at 80% 100%, rgba(82, 122, 255, 0.26), transparent 60%);
  mix-blend-mode: screen;
  opacity: 0.9;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../assets/images/hero_bg.png") center center / cover no-repeat;
  opacity: 0.35;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 620px;
}

.hero-label {
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent-soft);
  margin-bottom: 8px;
}

.hero-title {
  font-size: 2.6rem;
  margin-bottom: 16px;
}

.hero-sub {
  font-size: 1rem;
  color: var(--muted);
  margin-bottom: 32px;
}

.hero-scroll {
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ===== Sections ===== */
.section {
  padding: 80px 0;
}

.section:nth-of-type(odd) {
  background: transparent;
}

.section:nth-of-type(even) {
  background: rgba(5, 5, 18, 0.9);
}

.section-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-title {
  font-size: 1.4rem;
  margin-bottom: 24px;
}

/* Fade-in animation */
.section {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== News ===== */
.news-list {
  list-style: none;
  border-top: 1px solid var(--border);
}

.news-item {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.news-meta {
  font-size: 0.8rem;
  color: var(--muted);
  min-width: 140px;
}

.news-title {
  font-size: 0.95rem;
}

/* ===== Discography ===== */
.discography-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.disc-item {
  padding: 16px 18px;
  border-radius: 16px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
}

.disc-title {
  font-size: 1rem;
  margin-bottom: 4px;
}

.disc-meta {
  font-size: 0.8rem;
  color: var(--muted);
}

/* ===== Profile / Contact ===== */
.profile-text,
.contact-desc {
  max-width: 720px;
  font-size: 0.95rem;
}

.contact-link {
  display: inline-block;
  margin-top: 12px;
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  background: #050510;
  padding: 32px 0;
}

.footer-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.footer-sns {
  list-style: none;
  display: flex;
  gap: 12px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .header-inner {
    justify-content: center;
  }
  .nav-list {
    display: none; /* シンプルに非表示：必要ならあとでSPメニューに拡張 */
  }
  .hero {
    padding-top: 96px;
  }
  .hero-title {
    font-size: 2.1rem;
  }
}
#sakura-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
}
.hero,
.header,
main,
footer {
  position: relative;
  z-index: 1;
}