/* ===========================
   Version C: Modern Creative
   Deep dark + clean accent (no gradient)
   =========================== */
:root {
  /* ライブ写真のステージ照明ブルーをメインに、ギターのウォームブラウンをサブに */
  --bg: #0c0f18;
  --bg-alt: #111526;
  --bg-card: #171c30;
  --accent: #3b8de0;       /* ステージライトブルー */
  --accent-dim: rgba(59, 141, 224, 0.1);
  --accent-2: #c08860;     /* ギター/ウォームブラウン */
  --accent-2-dim: rgba(192, 136, 96, 0.12);
  --text: #e8e8ec;
  --text-dim: rgba(232, 232, 236, 0.6);
  --text-muted: rgba(232, 232, 236, 0.28);
  --border: rgba(255, 255, 255, 0.06);
  --radius: 14px;
  --radius-lg: 22px;
  --font-en: 'Sora', sans-serif;
  --font-jp: 'Noto Sans JP', sans-serif;
  --transition: 0.3s ease;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-jp); background: var(--bg); color: var(--text); line-height: 1.8; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

.container { max-width: 1000px; margin: 0 auto; padding: 0 28px; }

/* ===========================
   Navbar
   =========================== */
.navbar {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 100;
  padding: 18px 0;
  transition: background var(--transition), padding var(--transition);
}
.navbar.scrolled {
  background: rgba(24, 26, 36, 0.92);
  backdrop-filter: blur(14px);
  padding: 10px 0;
}
.nav-inner {
  max-width: 1000px; margin: 0 auto; padding: 0 28px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  font-family: var(--font-en); font-size: 1.3rem; font-weight: 700;
  color: var(--text); display: flex; align-items: center; gap: 2px;
}
.logo-dot {
  width: 6px; height: 6px; background: var(--accent);
  border-radius: 50%; display: inline-block; margin-bottom: -4px;
}
.nav-links { display: flex; gap: 28px; }
.nav-links a {
  font-family: var(--font-en); font-size: 0.78rem; font-weight: 400;
  letter-spacing: 0.08em; color: var(--text-dim); transition: color var(--transition);
}
.nav-links a:hover { color: var(--accent); }
.menu-btn {
  display: none; flex-direction: column; gap: 6px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.menu-btn span {
  width: 22px; height: 2px; background: var(--text); border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}
.menu-btn.active span:first-child { transform: translateY(8px) rotate(45deg); }
.menu-btn.active span:last-child { transform: translateY(-8px) rotate(-45deg); }

/* ===========================
   Hero
   =========================== */
.hero {
  position: relative; height: 100vh; min-height: 600px;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(12, 15, 24, 0.58) 0%,
    rgba(12, 15, 24, 0.44) 42%,
    rgba(12, 15, 24, 0.68) 100%
  );
}
.hero-bg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; opacity: 0.78;
}
.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 24px;
}
.hero-label {
  display: inline-block; font-family: var(--font-en);
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.3em; text-transform: uppercase;
  color: #eaf3ff; background: rgba(8, 11, 20, 0.45);
  border: 1px solid rgba(59, 141, 224, 0.45);
  padding: 6px 20px; border-radius: 100px; margin-bottom: 20px;
}
.hero-name {
  font-family: var(--font-en);
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 700; letter-spacing: 0.03em; line-height: 1.1;
  margin-bottom: 20px;
  color: var(--text);
  text-shadow:
    0 1px 0 rgba(0, 0, 0, 0.6),
    0 3px 16px rgba(0, 0, 0, 0.72),
    0 8px 22px rgba(0, 0, 0, 0.5);
}
.hero-sub {
  font-size: 1rem; color: var(--text-dim); letter-spacing: 0.2em; margin-bottom: 32px;
  font-weight: 500;
  color: #d9dce6;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.62);
}
.hero-cta {
  font-family: var(--font-en); font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: #eef5ff; border: 1px solid rgba(255, 255, 255, 0.42);
  padding: 12px 36px; border-radius: 100px;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}
.hero-cta:hover {
  background: var(--accent); color: #fff;
  box-shadow: 0 0 20px rgba(59, 141, 224, 0.2);
}

/* ===========================
   Sections
   =========================== */
.section { padding: 100px 0; }
.section-alt { background: var(--bg-alt); }
.label {
  display: inline-block; font-family: var(--font-en);
  font-size: 0.7rem; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 10px;
}
.heading { font-size: clamp(1.5rem, 3.5vw, 2.2rem); font-weight: 700; margin-bottom: 12px; }
.subtitle { font-size: 0.85rem; color: var(--text-dim); margin-bottom: 16px; }
.visual-banner { margin: 28px 0 40px; border-radius: var(--radius-lg); overflow: hidden; }
.visual-banner img {
  display: block; max-width: 480px; width: 100%; margin: 0 auto;
  border-radius: var(--radius);
}
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.tag {
  font-family: var(--font-en); font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.06em; padding: 4px 14px; border-radius: 100px;
  border: 1px solid var(--border); color: var(--text-dim);
}
.training-note {
  text-align: center; font-size: 0.88rem; color: var(--text-dim); margin-bottom: 32px;
}

/* ===========================
   About
   =========================== */
.about-layout { display: grid; grid-template-columns: 260px 1fr; gap: 52px; align-items: start; }
.about-photo {
  width: 100%; border-radius: var(--radius-lg); box-shadow: 0 8px 40px rgba(0,0,0,0.3);
  aspect-ratio: 3 / 4; object-fit: cover; object-position: center top;
}
.about-body p { font-size: 0.9rem; color: var(--text-dim); margin-bottom: 12px; line-height: 2; }

/* ===========================
   Cards
   =========================== */
.card-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 20px; }
.card-grid-3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 26px;
  transition: border-color var(--transition), transform var(--transition);
}
.card:hover { border-color: rgba(192, 136, 96, 0.35); transform: translateY(-3px); }
.card h3 {
  font-size: 0.88rem; font-weight: 600; color: var(--text);
  margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px;
}
.card h3 svg { stroke: var(--accent); flex-shrink: 0; }
.card li {
  font-size: 0.82rem; color: var(--text-dim); padding: 4px 0; padding-left: 14px;
  position: relative; line-height: 1.7;
}
.card li::before {
  content: ''; position: absolute; left: 0; top: 11px;
  width: 4px; height: 4px; background: var(--accent); border-radius: 50%; opacity: 0.5;
}
.card-list-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; }

/* ===========================
   Form
   =========================== */
.form {
  max-width: 600px; margin: 28px auto 0; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px 36px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form input, .form select, .form textarea {
  width: 100%; font-family: var(--font-jp); font-size: 0.88rem;
  color: var(--text); background: var(--bg); border: 1px solid var(--border);
  border-radius: 10px; padding: 13px 16px; margin-bottom: 14px;
  outline: none; appearance: none; transition: border-color var(--transition);
}
.form input::placeholder, .form textarea::placeholder { color: var(--text-muted); }
.form input:focus, .form select:focus, .form textarea:focus { border-color: var(--accent); }
.form select {
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%23555' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 16px center; padding-right: 40px; cursor: pointer;
}
.form textarea { resize: vertical; min-height: 100px; }
.form button {
  width: 100%; font-family: var(--font-jp); font-size: 0.9rem; font-weight: 500;
  letter-spacing: 0.1em; padding: 14px; border: none; border-radius: 100px;
  background: var(--accent); color: #fff; cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
}
.form button:hover { opacity: 0.9; transform: translateY(-1px); }
.sns { text-align: center; margin-top: 28px; }
.sns-btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-en); font-size: 0.82rem; color: var(--text-dim);
  border: 1px solid var(--border); padding: 10px 24px; border-radius: 100px;
  transition: border-color var(--transition), color var(--transition);
}
.sns-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ===========================
   Footer
   =========================== */
.footer { padding: 36px 0; text-align: center; border-top: 1px solid var(--border); }
.footer-logo {
  font-family: var(--font-en); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.15em; color: var(--text-muted);
}
.footer-ig {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  border: 1px solid var(--border); color: var(--text-muted); margin: 10px 0;
  transition: color var(--transition), border-color var(--transition);
}
.footer-ig:hover { color: var(--accent); border-color: var(--accent); }
.footer p { font-size: 0.68rem; color: var(--text-muted); }

/* ===========================
   Fade-in
   =========================== */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===========================
   Responsive
   =========================== */
@media (max-width: 768px) {
  .menu-btn { display: flex; }
  .nav-links {
    position: fixed; top: 0; right: -100%; width: 70%; max-width: 280px; height: 100vh;
    background: rgba(24, 26, 36, 0.97); backdrop-filter: blur(12px);
    flex-direction: column; justify-content: center; align-items: center; gap: 24px;
    transition: right 0.4s ease;
  }
  .nav-links.open { right: 0; }
  .nav-links a { font-size: 0.95rem; }
  .section { padding: 64px 0; }
  .about-layout { grid-template-columns: 1fr; gap: 28px; }
  .about-photo { max-width: 220px; margin: 0 auto; }
  .card-grid, .card-grid-3 { grid-template-columns: 1fr; }
  .card-list-grid { grid-template-columns: 1fr; }
  .form { padding: 28px 20px; }
  .form-row { grid-template-columns: 1fr; }
}