/* =========================================================
   OBSIDIAN YOGA  /  style.css
   Color: #1A1A1A (黒)  /  #C9A84C (金)  /  #F5F5F5 (白)
   Font : Noto Serif JP + Playfair Display
   ========================================================= */

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  color: #1A1A1A;
  background: #F5F5F5;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  font-weight: 400;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; transition: opacity .25s ease, color .25s ease; }
a:hover { opacity: .7; }

.container { width: min(1080px, 92%); margin-inline: auto; }

/* -------- Buttons -------- */
.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: 14px;
  letter-spacing: .15em;
  font-family: "Playfair Display", "Noto Serif JP", serif;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .3s ease;
  text-align: center;
}
.btn-primary {
  background: #C9A84C;
  color: #1A1A1A;
  border-color: #C9A84C;
}
.btn-primary:hover {
  background: transparent;
  color: #C9A84C;
  opacity: 1;
}
.btn-ghost {
  background: transparent;
  color: #F5F5F5;
  border-color: #F5F5F5;
}
.btn-ghost:hover {
  background: #F5F5F5;
  color: #1A1A1A;
  opacity: 1;
}
.btn-lg { padding: 20px 56px; font-size: 16px; }

/* -------- Header -------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 50;
  padding: 18px 0;
  background: rgba(26, 26, 26, .85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(201, 168, 76, .2);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; flex-direction: column; line-height: 1.1; }
.brand-en {
  font-family: "Playfair Display", serif;
  font-size: 20px;
  letter-spacing: .25em;
  color: #C9A84C;
  font-weight: 500;
}
.brand-ja {
  font-size: 11px;
  letter-spacing: .15em;
  color: #F5F5F5;
  margin-top: 4px;
}
.nav-pc { display: flex; gap: 32px; align-items: center; }
.nav-pc a {
  color: #F5F5F5;
  font-size: 13px;
  letter-spacing: .15em;
}
.nav-pc a:hover { color: #C9A84C; opacity: 1; }
.nav-cta {
  border: 1px solid #C9A84C;
  padding: 8px 20px;
  color: #C9A84C !important;
}
.nav-cta:hover {
  background: #C9A84C;
  color: #1A1A1A !important;
}

/* -------- Hero -------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  overflow: hidden;
  color: #F5F5F5;
}
.hero-bg {
  position: absolute; inset: 0;
  background-image: url('https://images.unsplash.com/photo-1599447421416-3414500d18a5?w=1600&q=80&auto=format&fit=crop');
  background-size: cover;
  background-position: center;
  filter: brightness(.5) saturate(.8);
  animation: heroZoom 18s ease-in-out infinite alternate;
}
@keyframes heroZoom {
  from { transform: scale(1); }
  to   { transform: scale(1.08); }
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(26,26,26,.55) 0%, rgba(26,26,26,.85) 100%);
}
.hero-inner {
  position: relative;
  padding: 140px 0 80px;
  animation: fadeUp 1.4s ease-out both;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hero-eyebrow {
  font-family: "Playfair Display", serif;
  font-style: italic;
  letter-spacing: .25em;
  color: #C9A84C;
  font-size: 13px;
  margin-bottom: 30px;
}
.hero-title {
  font-size: clamp(34px, 5vw, 60px);
  font-weight: 500;
  line-height: 1.5;
  margin-bottom: 28px;
  letter-spacing: .08em;
}
.hero-sub {
  font-size: 15px;
  letter-spacing: .1em;
  margin-bottom: 48px;
  color: #E8E8E8;
}
.hero-cta { display: flex; gap: 18px; flex-wrap: wrap; }

.hero-scroll {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  font-family: "Playfair Display", serif;
  font-size: 11px; letter-spacing: .3em;
  color: #C9A84C;
}
.hero-scroll-line {
  width: 1px; height: 50px; background: #C9A84C;
  animation: scrollPulse 2s ease-in-out infinite;
  transform-origin: top;
}
@keyframes scrollPulse {
  0%, 100% { transform: scaleY(.3); opacity: .4; }
  50%      { transform: scaleY(1);  opacity: 1; }
}

/* -------- Section heads -------- */
.section-head { text-align: center; margin-bottom: 64px; }
.section-en {
  font-family: "Playfair Display", serif;
  font-style: italic;
  font-size: 14px;
  letter-spacing: .3em;
  color: #C9A84C;
  margin-bottom: 14px;
}
.section-ja {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 500;
  letter-spacing: .15em;
  margin-bottom: 20px;
  position: relative;
  display: inline-block;
}
.section-ja::after {
  content: "";
  display: block;
  width: 36px; height: 1px;
  background: #C9A84C;
  margin: 18px auto 0;
}
.section-lead {
  font-size: 14px;
  color: #555;
  letter-spacing: .08em;
}
.section-head-light .section-en { color: #C9A84C; }
.section-head-light .section-ja { color: #F5F5F5; }
.section-head-light .section-lead { color: #C8C8C8; }

/* -------- Concept -------- */
.concept {
  padding: 120px 0;
  background: #F5F5F5;
}
.concept-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.concept-card {
  padding: 48px 32px;
  background: #FFFFFF;
  border: 1px solid #E5E0D0;
  text-align: center;
  transition: transform .4s ease, box-shadow .4s ease;
}
.concept-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(26,26,26,.08);
}
.concept-num {
  font-family: "Playfair Display", serif;
  font-size: 36px;
  color: #C9A84C;
  font-style: italic;
  margin-bottom: 14px;
  letter-spacing: .1em;
}
.concept-title {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: .12em;
  margin-bottom: 18px;
}
.concept-text {
  font-size: 14px;
  color: #555;
  line-height: 2;
  text-align: left;
}

/* -------- Menu (Classes) -------- */
.menu {
  padding: 120px 0;
  background: #1A1A1A;
  color: #F5F5F5;
}
.menu .section-en { color: #C9A84C; }
.menu .section-ja { color: #F5F5F5; }
.menu .section-lead { color: #C8C8C8; }
.menu-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
}
.menu-card {
  background: #222;
  border: 1px solid rgba(201,168,76,.15);
  overflow: hidden;
  transition: transform .4s ease, border-color .4s ease;
}
.menu-card:hover {
  transform: translateY(-6px);
  border-color: #C9A84C;
}
.menu-img {
  height: 220px;
  background-size: cover;
  background-position: center;
  filter: brightness(.85);
  transition: filter .4s ease, transform .6s ease;
}
.menu-card:hover .menu-img {
  filter: brightness(1);
  transform: scale(1.04);
}
.menu-body { padding: 28px 26px; }
.menu-row {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 14px;
  border-bottom: 1px solid rgba(201,168,76,.2);
  padding-bottom: 10px;
}
.menu-name {
  font-size: 17px;
  font-weight: 500;
  letter-spacing: .08em;
}
.menu-price {
  font-family: "Playfair Display", serif;
  font-style: italic;
  color: #C9A84C;
  font-size: 14px;
  letter-spacing: .1em;
}
.menu-text {
  font-size: 13px;
  color: #B8B8B8;
  line-height: 1.95;
}

/* -------- Info -------- */
.info {
  padding: 120px 0;
  background: #1A1A1A;
  color: #F5F5F5;
  border-top: 1px solid rgba(201,168,76,.15);
}
.info-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: start;
}
.info-list { width: 100%; }
.info-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(201,168,76,.18);
}
.info-row dt {
  font-family: "Playfair Display", serif;
  font-style: italic;
  color: #C9A84C;
  letter-spacing: .12em;
  font-size: 14px;
}
.info-row dd {
  font-size: 14px;
  letter-spacing: .08em;
  color: #F5F5F5;
}
.info-photo {
  height: 380px;
  background-image: url('https://images.unsplash.com/photo-1506126613408-eca07ce68773?w=1000&q=80&auto=format&fit=crop');
  background-size: cover;
  background-position: center;
  filter: brightness(.7) saturate(.85);
}
.info-caption {
  margin-top: 16px;
  font-family: "Playfair Display", serif;
  font-style: italic;
  text-align: center;
  color: #C9A84C;
  letter-spacing: .15em;
  font-size: 13px;
}

/* -------- Contact -------- */
.contact {
  padding: 120px 0;
  background: #F5F5F5;
  text-align: center;
}
.contact-inner { max-width: 720px; margin-inline: auto; }
.contact-en {
  font-family: "Playfair Display", serif;
  font-style: italic;
  font-size: 14px;
  letter-spacing: .3em;
  color: #C9A84C;
  margin-bottom: 18px;
}
.contact-title {
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 500;
  line-height: 1.9;
  letter-spacing: .1em;
  margin-bottom: 24px;
}
.contact-text {
  font-size: 14px;
  color: #555;
  margin-bottom: 40px;
  letter-spacing: .08em;
}

/* -------- Footer -------- */
.site-footer {
  background: #0F0F0F;
  color: #C8C8C8;
  padding: 36px 0;
  border-top: 1px solid rgba(201,168,76,.2);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-brand {
  font-family: "Playfair Display", serif;
  letter-spacing: .25em;
  color: #C9A84C;
  font-size: 14px;
}
.footer-copy {
  font-size: 12px;
  letter-spacing: .12em;
}

/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 900px) {
  .nav-pc { gap: 18px; }
  .nav-pc a { font-size: 12px; letter-spacing: .1em; }
  .nav-cta { padding: 6px 14px; }
  .concept-grid,
  .menu-grid { grid-template-columns: 1fr; gap: 24px; }
  .info-grid { grid-template-columns: 1fr; gap: 40px; }
  .info-photo { height: 280px; }
}

@media (max-width: 640px) {
  .nav-pc { display: none; }
  .header-inner { justify-content: center; }
  .hero-inner { padding: 120px 0 80px; }
  .hero-title { font-size: 28px; line-height: 1.6; }
  .hero-sub { font-size: 14px; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
  .concept,
  .menu,
  .info,
  .contact { padding: 80px 0; }
  .section-head { margin-bottom: 44px; }
  .info-row { grid-template-columns: 100px 1fr; gap: 14px; }
  .footer-inner { flex-direction: column; text-align: center; }
}