/* =========================================
   Variables (Gentle Dark Mode)
========================================= */
:root {
  --bg-color: #1c2126;
  --bg-darker: #161a1f;
  --text-color: #e6e9ed;
  --text-muted: #abb1b9;
    --accent-color: #c98a5c;
    --accent-hover: #e09e6f;
  --card-bg: #22272e;
  --border-color: #31373e;
  
  --font-base: 'Inter', 'Noto Serif JP', serif;
  --font-heading: 'Noto Serif JP', serif;
}

/* =========================================
   Base Styles
========================================= */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-base);
  line-height: 1.6;
  letter-spacing: 0.05em;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color 0.3s ease; }
a:hover { color: var(--accent-color); }
img { max-width: 100%; height: auto; display: block; }

.container { max-width: 1000px; margin: 0 auto; padding: 0 20px; }
.section { padding: 100px 0; }
.bg-darker { background-color: var(--bg-darker); }

.section-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  text-align: center;
  margin-bottom: 50px;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--accent-color);
}

/* =========================================
   Animations (JS有効時のみアニメーション実行)
========================================= */
.js-loaded .fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.js-loaded .fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================
   Buttons
========================================= */
.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 4px;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  transition: all 0.3s ease;
  cursor: pointer;
  text-align: center;
}
.btn-primary { background-color: var(--accent-color); color: #fff; border: none; }
.btn-primary:hover { background-color: var(--accent-hover); color: #fff; }
.btn-outline { background-color: transparent; color: var(--text-color); border: 1px solid var(--border-color); }
.btn-outline:hover { border-color: var(--accent-color); color: var(--accent-color); }

/* =========================================
   Header
========================================= */
header {
  position: fixed;
  top: 0; left: 0; width: 100%;
  background-color: rgba(28, 33, 38, 0.9);
  backdrop-filter: blur(10px);
  z-index: 100;
  border-bottom: 1px solid var(--border-color);
}
.header-container { display: flex; justify-content: space-between; align-items: center; padding: 15px 30px; max-width: 1200px; margin: 0 auto; }
.logo a { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 600; display: flex; align-items: center; }
.logo-icon { width: 36px; height: 36px; object-fit: cover; border-radius: 50%; margin-right: 12px; }
.global-nav ul { display: flex; list-style: none; gap: 30px; }
.global-nav a { font-size: 0.9rem; font-weight: 300; }
.menu-toggle { display: none; font-size: 1.5rem; cursor: pointer; }

/* =========================================
   Hero Section
========================================= */
.hero {
  height: 100vh; position: relative;
  display: flex; align-items: center; justify-content: center; text-align: center;
  background: url('https://images.unsplash.com/photo-1510915361894-db8b60106cb1?auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
}
.hero-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(to bottom, rgba(28, 33, 38, 0.4), var(--bg-color)); }
.hero-content { position: relative; z-index: 10; }
.hero-copy { font-family: var(--font-heading); font-size: 2.5rem; font-weight: 300; line-height: 1.8; color: #fff; text-shadow: 0 2px 10px rgba(0,0,0,0.5); }

/* =========================================
   Live Section
========================================= */
.live-banner {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 40px;
  text-align: center;
  border-left: 4px solid var(--accent-color);
}
.live-date { font-size: 1.2rem; color: var(--accent-color); margin-bottom: 10px; font-weight: 600; letter-spacing: 0.1em; }
.live-date span { font-size: 0.9rem; font-weight: normal; }
.live-title { font-family: var(--font-heading); font-size: 1.8rem; margin-bottom: 10px; }
.live-venue { color: var(--text-muted); margin-bottom: 20px; }
.live-desc { margin-bottom: 30px; font-weight: 300; }

/* =========================================
   New Release Section
========================================= */
.release-content { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.release-img img { border-radius: 8px; box-shadow: 0 10px 30px rgba(0,0,0,0.3); }
.release-badge { display: inline-block; background-color: var(--accent-color); color: #fff; font-size: 0.75rem; padding: 4px 10px; border-radius: 20px; margin-bottom: 15px; }
.release-info .song-title { font-family: var(--font-heading); font-size: 2rem; margin-bottom: 15px; }
.release-info .song-desc { color: var(--text-muted); margin-bottom: 30px; font-weight: 300; }
.streaming-links { display: flex; flex-wrap: wrap; gap: 10px; }

/* =========================================
   News Section
========================================= */
.news-list { list-style: none; border-top: 1px solid var(--border-color); }
.news-list li { border-bottom: 1px solid var(--border-color); }
.news-list a { display: flex; align-items: center; padding: 20px 10px; transition: background-color 0.3s; }
.news-list a:hover { background-color: rgba(255,255,255,0.03); }
.news-date { font-size: 0.9rem; color: var(--text-muted); width: 120px; flex-shrink: 0; }
.news-category { font-size: 0.75rem; padding: 3px 8px; border-radius: 4px; width: 80px; text-align: center; margin-right: 20px; flex-shrink: 0; border: 1px solid var(--border-color); }
.news-category.tag-release { color: #8ab4f8; border-color: rgba(138,180,248,0.3); }
.news-category.tag-live { color: #f28b82; border-color: rgba(242,139,130,0.3); }
.news-category.tag-media { color: #81c995; border-color: rgba(129,201,149,0.3); }
.news-text { font-weight: 300; }

/* =========================================
   Pick Up & Music
========================================= */
.video-wrapper { position: relative; padding-bottom: 56.25%; height: 0; background-color: var(--bg-darker); border-radius: 8px; overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,0.3); max-width: 800px; margin: 0 auto; }
.video-wrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
.discography-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 30px; }
.disco-card { background-color: var(--card-bg); border-radius: 8px; overflow: hidden; border: 1px solid var(--border-color); transition: transform 0.3s ease; }
.disco-card:hover { transform: translateY(-5px); }
.disco-img img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; border-bottom: 1px solid var(--border-color); }
.disco-body { padding: 20px; }
.release-type { font-size: 0.75rem; color: var(--accent-color); text-transform: uppercase; letter-spacing: 0.1em; display: block; margin-bottom: 8px; }
.disco-title { font-family: var(--font-heading); font-size: 1.2rem; margin-bottom: 15px; }

/* =========================================
   About & SNS Links
========================================= */
.about-content { text-align: center; max-width: 700px; margin: 0 auto; }
.artist-name { font-family: var(--font-heading); font-size: 2rem; margin-bottom: 20px; letter-spacing: 0.2em; }
.profile-text { font-size: 1.05rem; font-weight: 300; line-height: 1.8; margin-bottom: 40px; }
.sns-links { display: flex; justify-content: center; gap: 15px; flex-wrap: wrap; }
.sns-links a { display: flex; align-items: center; justify-content: center; width: 55px; height: 55px; background-color: var(--card-bg); border-radius: 50%; font-size: 1.4rem; border: 1px solid var(--border-color); transition: all 0.3s ease; }
.sns-links a:hover { background-color: var(--accent-color); border-color: var(--accent-color); color: #fff; transform: translateY(-3px); }

/* =========================================
   Footer
========================================= */
.footer { text-align: center; padding: 30px 0; background-color: var(--bg-darker); border-top: 1px solid var(--border-color); font-size: 0.8rem; color: var(--text-muted); }

/* =========================================
   Responsive
========================================= */
@media (max-width: 768px) {
  .release-content { grid-template-columns: 1fr; }
  .news-list a { flex-direction: column; align-items: flex-start; padding: 15px; }
  .news-date, .news-category { margin-bottom: 10px; }
  .menu-toggle { display: block; }
  .global-nav { display: none; position: absolute; top: 100%; left: 0; width: 100%; background-color: rgba(28, 33, 38, 0.98); border-bottom: 1px solid var(--border-color); }
  .global-nav.active { display: block; }
  .global-nav ul { flex-direction: column; gap: 0; }
  .global-nav a { display: block; padding: 20px; text-align: center; border-top: 1px solid var(--border-color); }
}