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

:root {
  --bg:          #ffffff;
  --bg-2:        #f5f5f7;
  --bg-3:        #fafafa;
  --text:        #1d1d1f;
  --muted:       #6e6e73;
  --gold:        #C8A75B;
  --gold-l:      #e2c87a;
  --gold-d:      #9a7830;
  --border:      #e0e0e5;
  --shadow-sm:   0 2px 12px rgba(0,0,0,0.05);
  --shadow:      0 4px 28px rgba(0,0,0,0.08);
  --shadow-md:   0 12px 48px rgba(0,0,0,0.12);
  --radius:      16px;
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.87, 0, 0.13, 1);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 17px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.loading { overflow: hidden; }
img { display: block; width: 100%; height: 100%; object-fit: cover; }
a { text-decoration: none; color: inherit; }

.container { width: 90%; max-width: 1120px; margin: 0 auto; }
.section { padding: 140px 0; }

.noise-overlay { display: none; }

/* ===== LOADER ===== */
.loader {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.9s var(--ease-in-out);
}
.loader.hide { transform: translateY(-100%); }
.loader-inner { text-align: center; }
.loader-mark { display: flex; justify-content: center; margin-bottom: 28px; }

.loader-track {
  width: 160px;
  height: 1px;
  background: var(--border);
  margin: 0 auto 12px;
  overflow: hidden;
}
.loader-fill {
  height: 100%;
  width: 0%;
  background: var(--text);
  transition: width 0.1s linear;
}
.loader-pct {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--muted);
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  background: #fff;
  border-bottom: 1px solid var(--border);
  transition: background 0.4s, border-color 0.4s, box-shadow 0.4s, transform 0.3s ease;
}
@media (max-width: 767px) {
  .header.header--hidden {
    transform: translateY(-100%);
  }
}
.header.scrolled {
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 24px rgba(0,0,0,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  width: 90%;
  max-width: 1120px;
  margin: 0 auto;
}

.logo-mark { display: flex; align-items: center; opacity: 0.8; transition: opacity 0.3s; }
.logo-mark:hover { opacity: 0.4; }
.logo-img { height: 64px; width: auto; }

.nav { display: flex; gap: 36px; }
.nav-link {
  font-family: 'Montserrat', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.05em;
  position: relative;
  transition: color 0.25s;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1.5px;
  background: var(--text);
  transition: width 0.3s var(--ease-out);
}
.nav-link:hover { color: var(--text); }
.nav-link:hover::after { width: 100%; }

.header-right { display: flex; align-items: center; gap: 20px; }

.availability {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.avail-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #34c759;
  box-shadow: 0 0 0 0 rgba(52,199,89,0.4);
  animation: pulse-dot 2.5s infinite;
}
@keyframes pulse-dot {
  0%   { box-shadow: 0 0 0 0 rgba(52,199,89,0.4); }
  70%  { box-shadow: 0 0 0 8px rgba(52,199,89,0); }
  100% { box-shadow: 0 0 0 0 rgba(52,199,89,0); }
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--text);
  transition: all 0.3s;
  transform-origin: center;
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(4.5px, 4.5px); }
.hamburger.open span:nth-child(2) { transform: rotate(-45deg) translate(4.5px, -4.5px); }

/* MOBILE NAV */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 36px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s;
}
.mobile-nav.open { opacity: 1; pointer-events: all; }
.mobile-link {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(28px, 7vw, 48px);
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.04em;
  transition: color 0.2s;
}
.mobile-link:hover { color: var(--text); }

/* ===== SECTION COMMON ===== */
.section-eyebrow {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 16px;
  display: block;
}
.section-heading {
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--text);
  margin-bottom: 16px;
}
.section-header {
  text-align: center;
  margin-bottom: 80px;
}
.section-note {
  font-size: 15px;
  color: var(--muted);
  margin-top: 10px;
  line-height: 1.9;
}
.gold { color: var(--gold); font-weight: 700; }

/* ===== REVEAL ANIMATIONS ===== */
.reveal-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
  transition-delay: var(--di, 0s);
}
.reveal-up.visible { opacity: 1; transform: translateY(0); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 32px;
  border-radius: 980px;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
  border: none;
  cursor: pointer;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s;
}
.btn:hover { transform: translateY(-3px); }
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: linear-gradient(160deg, #3a3a3c 0%, #1d1d1f 100%);
  color: #fff;
  box-shadow: 0 6px 20px rgba(29,29,31,0.28), inset 0 1px 0 rgba(255,255,255,0.1);
}
.btn-primary:hover {
  box-shadow: 0 12px 32px rgba(29,29,31,0.38), inset 0 1px 0 rgba(255,255,255,0.1);
}

.btn-ghost {
  background: #fff;
  color: var(--text);
  border: 1.5px solid rgba(29,29,31,0.14);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08), inset 0 1px 0 rgba(255,255,255,0.9);
}
.btn-ghost:hover {
  background: var(--text);
  color: #fff;
  border-color: var(--text);
  box-shadow: 0 10px 28px rgba(29,29,31,0.22);
}

.btn-instagram {
  background: linear-gradient(135deg,#f09433,#e6683c,#dc2743,#cc2366,#bc1888);
  color: #fff;
  box-shadow: 0 6px 20px rgba(220,39,67,0.28), inset 0 1px 0 rgba(255,255,255,0.15);
}
.btn-instagram:hover { box-shadow: 0 12px 32px rgba(220,39,67,0.4); }

.btn-lg { padding: 18px 44px; font-size: 16px; }
.btn-sm { padding: 10px 22px; font-size: 13px; }

.btn-line {
  background: #06C755;
  color: #fff;
  box-shadow: 0 6px 20px rgba(6,199,85,0.3), inset 0 1px 0 rgba(255,255,255,0.15);
}
.btn-line:hover {
  background: #05b34c;
  box-shadow: 0 12px 32px rgba(6,199,85,0.4);
}

.btn-gold {
  background: linear-gradient(160deg, #d9b86a 0%, #C8A75B 40%, #a8862a 100%);
  color: #fff;
  box-shadow: 0 6px 24px rgba(200,167,91,0.42), inset 0 1px 0 rgba(255,255,255,0.22);
}
.btn-gold:hover {
  box-shadow: 0 14px 40px rgba(200,167,91,0.55), inset 0 1px 0 rgba(255,255,255,0.22);
  filter: brightness(1.06);
}

/* ===== SECTION CTA ===== */
.section-cta {
  margin-top: 72px;
  padding-top: 56px;
  border-top: 1px solid var(--border);
  text-align: center;
}
.section-cta-text {
  font-size: 17px;
  color: var(--muted);
  margin-bottom: 28px;
  line-height: 1.8;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--text);
  padding: 44px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-logo { display: flex; align-items: center; opacity: 0.6; }
.footer-copy { font-size: 12px; color: rgba(255,255,255,0.3); letter-spacing: 0.06em; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .section { padding: 100px 0; }
  .nav, .availability { display: none; }
  .hamburger { display: flex; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
  .section-header { margin-bottom: 60px; }
}