/* ================================================
   BOOGIE DANCE CLUB — Modern Redesign
   Design System & Global Styles
   ================================================ */

:root {
  --yellow: #F5C800;
  --yellow-light: #FFF3B0;
  --black: #0D0D0D;
  --dark: #1A1A1A;
  --dark-2: #242424;
  --gray: #888888;
  --gray-light: #F4F4F4;
  --white: #FFFFFF;
  --text: #1A1A1A;
  --text-muted: #666666;

  --font-en: 'Outfit', sans-serif;
  --font-ja: 'Noto Sans JP', sans-serif;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 40px;

  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.14);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-ja);
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { border: none; cursor: pointer; background: none; }

/* ---- Container ---- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ================================================
   BUTTONS
   ================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: var(--radius-xl);
  font-family: var(--font-ja);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary {
  background: var(--yellow);
  color: var(--black);
}
.btn-primary:hover {
  background: #e0b600;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 200, 0, 0.4);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.6);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
  transform: translateY(-2px);
}
.btn-dark {
  background: var(--black);
  color: var(--white);
}
.btn-dark:hover {
  background: #333;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.btn-full { width: 100%; }

/* ================================================
   HEADER / NAV
   ================================================ */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}
#header.scrolled {
  background: rgba(13, 13, 13, 0.92);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.08);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-logo img {
  height: 52px;
  width: 52px;
  border-radius: 50%;
  object-fit: cover;
  transition: transform var(--transition);
}
.nav-logo-text {
  font-family: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.08em;
  white-space: nowrap;
}
.nav-logo:hover img { transform: scale(1.05); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 500;
  opacity: 0.85;
  transition: opacity var(--transition);
}
.nav-links a:hover { opacity: 1; }
.nav-cta {
  background: var(--yellow);
  color: var(--black) !important;
  padding: 10px 22px;
  border-radius: var(--radius-xl);
  font-weight: 700 !important;
  opacity: 1 !important;
}
.nav-cta:hover {
  background: #e0b600;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(245,200,0,0.4);
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu {
  display: none;
  flex-direction: column;
  background: rgba(13,13,13,0.97);
  backdrop-filter: blur(16px);
}
.mobile-menu.open { display: flex; }
.mobile-link {
  color: var(--white);
  font-size: 1.1rem;
  font-weight: 500;
  padding: 18px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  transition: background var(--transition);
}
.mobile-link:hover { background: rgba(255,255,255,0.05); }

/* ================================================
   HERO
   ================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 80% 50%, rgba(245,200,0,0.12) 0%, transparent 70%),
    linear-gradient(160deg, #0D0D0D 0%, #1a1600 50%, #0D0D0D 100%);
  z-index: 0;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(245,200,0,0.06) 0%, transparent 40%);
}
.hero-content {
  position: relative;
  z-index: 1;
  margin: 0 auto;
  padding: 120px 40px 80px max(24px, 8vw);
  max-width: 860px;
}
.hero-eyebrow {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--yellow);
  margin-bottom: 20px;
}
.hero-title {
  font-family: var(--font-ja);
  font-size: clamp(2.4rem, 5vw, 4.5rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.25;
  margin-bottom: 24px;
  word-break: keep-all;
  overflow-wrap: break-word;
}
.hero-accent {
  color: var(--yellow);
}
.hero-sub {
  color: rgba(255,255,255,0.7);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 480px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-sns {
  margin-top: 24px;
}
.hero-sns-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: var(--radius-xl);
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 700;
  background: linear-gradient(135deg, rgba(240, 148, 51, 0.2), rgba(220, 39, 67, 0.2), rgba(188, 24, 136, 0.2));
  border: 1px solid rgba(255,255,255,0.25);
  backdrop-filter: blur(8px);
  transition: var(--transition);
}
.hero-sns-link:hover {
  background: linear-gradient(135deg, #f09433, #dc2743, #bc1888);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(220, 39, 67, 0.35);
}
.hero-sns-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}
.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}
.hero-scroll-indicator span {
  display: block;
  width: 2px;
  height: 50px;
  background: linear-gradient(to bottom, var(--yellow), transparent);
  margin: 0 auto;
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(0.8); }
}

/* ================================================
   SECTIONS — common
   ================================================ */
.section {
  padding: 96px 0;
}
.section-label {
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--yellow);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 48px;
}

/* ================================================
   ABOUT
   ================================================ */
.about {
  background: var(--gray-light);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-text p {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.9;
  margin-bottom: 16px;
}
.about-text p strong {
  color: var(--text);
  font-weight: 700;
}
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

/* 住所 & MAP */
.about-location {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.about-address {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.about-address-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.about-address-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 4px;
}
.about-address-value {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
}
.about-map iframe {
  width: 100%;
  height: 340px;
  border: 0;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  display: block;
}
.stat {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 28px 16px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.stat-number {
  display: block;
  font-family: var(--font-en);
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--black);
  margin-bottom: 8px;
}
.stat-label {
  display: block;
  font-size: 0.78rem;
  color: var(--gray);
  font-weight: 500;
}

/* ================================================
   INSTRUCTORS
   ================================================ */
.instructors {
  background: var(--dark);
  color: var(--white);
}
.instructors .section-title { color: var(--white); }
.instructor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.instructor-card {
  background: var(--dark-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid rgba(255,255,255,0.06);
}
.instructor-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.instructor-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
}
.instructor-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform 0.6s ease;
}
.instructor-card:hover .instructor-img {
  transform: scale(1.04);
}
.instructor-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--yellow);
  color: var(--black);
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 6px 14px;
  border-radius: var(--radius-xl);
}
.instructor-sns {
  position: absolute;
  bottom: 14px;
  right: 14px;
  width: 38px;
  height: 38px;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  transition: background var(--transition), transform var(--transition);
}
.instructor-sns svg {
  width: 18px;
  height: 18px;
}
.instructor-sns:hover {
  background: linear-gradient(135deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
  transform: scale(1.12);
}
.instructor-info {
  padding: 28px;
}
.instructor-name {
  font-family: var(--font-en);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--white);
  margin-bottom: 4px;
  text-transform: lowercase;
  letter-spacing: -0.02em;
}
.instructor-birth {
  font-size: 0.78rem;
  color: var(--gray);
  margin-bottom: 16px;
}
.instructor-bio {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
  margin-bottom: 20px;
}
.achievements-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--yellow);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.instructor-achievements ul li {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  padding: 4px 0;
  padding-left: 14px;
  position: relative;
  line-height: 1.5;
}
.instructor-achievements ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--yellow);
  font-size: 0.7rem;
}

/* ================================================
   CLASSES
   ================================================ */
.classes {
  background: var(--white);
}
.schedule-banner {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--yellow-light);
  border: 1px solid rgba(245,200,0,0.4);
  color: var(--dark);
  padding: 12px 24px;
  border-radius: var(--radius-xl);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 40px;
}
.class-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.class-card {
  border: 1px solid #E8E8E8;
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.class-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.class-card-accent {
  background: #3D3830;
  border-color: #3D3830;
}
.class-time {
  font-family: var(--font-en);
  font-size: 0.8rem;
  color: var(--gray);
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}
.class-card-accent .class-time { color: rgba(255,255,255,0.55); }
.class-badge {
  display: inline-block;
  background: var(--yellow);
  color: var(--black);
  font-weight: 700;
  font-size: 1rem;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}
.class-badge-dark {
  background: var(--white);
  color: var(--black);
}
.class-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 28px;
}
.class-card-accent .class-desc { color: rgba(255,255,255,0.75); }
.class-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 28px;
}
.class-meta-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.meta-label {
  font-size: 0.72rem;
  color: var(--gray);
  font-weight: 600;
  letter-spacing: 0.05em;
}
.class-card-accent .meta-label { color: rgba(255,255,255,0.5); }
.meta-value {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}
.class-card-accent .meta-value { color: var(--white); }

/* ================================================
   CONTACT
   ================================================ */
.contact {
  background: var(--gray-light);
}
.contact-sub {
  color: var(--text-muted);
  font-size: 1rem;
  margin-top: -24px;
  margin-bottom: 48px;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px;
  align-items: start;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-icon {
  font-size: 1.2rem;
  width: 44px;
  height: 44px;
  background: var(--white);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  flex-shrink: 0;
}
.contact-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 4px;
}
.contact-value {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
}
.contact-link:hover { color: var(--yellow); text-decoration: underline; }

/* -- Form -- */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  background: var(--white);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-group label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.03em;
}
.form-group input,
.form-group select,
.form-group textarea {
  padding: 14px 16px;
  border: 1.5px solid #E0E0E0;
  border-radius: var(--radius-sm);
  font-family: var(--font-ja);
  font-size: 0.92rem;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: none;
  appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--yellow);
  box-shadow: 0 0 0 3px rgba(245,200,0,0.15);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #BCBCBC;
}
.form-note {
  font-size: 0.78rem;
  color: var(--gray);
  text-align: center;
}

/* ================================================
   FOOTER
   ================================================ */
.footer {
  background: var(--black);
  color: var(--white);
  padding: 56px 0 32px;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}
.footer-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.footer-logo img {
  height: 64px;
  width: 64px;
  border-radius: 50%;
  object-fit: cover;
}
.footer-logo p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
}
.footer-links {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-links a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--yellow); }
.footer-copy {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.25);
}

/* ================================================
   RESPONSIVE
   ================================================ */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }

  .hero-content { padding: 100px 24px 80px; }
  .hero-sub { font-size: 0.82rem; max-width: 100%; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; text-align: center; }
  .hero-sns-link { width: 100%; justify-content: center; font-size: 0.9rem; }

  .section { padding: 64px 0; }

  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-stats { grid-template-columns: repeat(3,1fr); }

  .instructor-grid { grid-template-columns: 1fr; }
  .instructor-img-wrap { aspect-ratio: 16/10; }

  .class-grid { grid-template-columns: 1fr; }

  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-form { padding: 28px 20px; }
}

@media (max-width: 480px) {
  .about-stats { grid-template-columns: 1fr; }
  .class-meta { grid-template-columns: 1fr; }
  .footer-links { gap: 20px; }
}

/* ================================================
   SCROLL ANIMATIONS
   ================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
/* Fallback: if JS doesn't run, show everything */
@media (prefers-reduced-motion: reduce) {
  .fade-up { opacity: 1; transform: none; }
}