:root {
  --cream: #ffffff;
  --parchment: #f4f4f4;
  --sand: #d8d8d8;
  --dusk: #aaaaaa;
  --bark: #888888;
  --earth: #444444;
  --deep: #111111;
  --accent-spring: #c9d9b8;
  --accent-summer: #b8d4cc;
  --accent-autumn: #d9c4a8;
  --accent-winter: #c8cfd9;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Serif JP', serif;
  background: var(--cream);
  color: var(--earth);
  overflow-x: hidden;
}

/* ─── scrollbar ─── */
::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: var(--parchment); }
::-webkit-scrollbar-thumb { background: var(--sand); }

/* ─── NAV ─── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; justify-content: space-between; align-items: center;
  padding: 22px 48px;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,0.07);
  animation: fadeDown 0.8s ease both;
}
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.logo {
  font-size: 13px; letter-spacing: 0.28em;
  color: var(--earth); font-weight: 400;
}
.nav-links {
  display: flex; gap: 32px;
  list-style: none;
  font-size: 13px; letter-spacing: 0.2em; color: var(--bark);
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
}
.nav-links a { color: inherit; text-decoration: none; transition: color 0.2s; }
.nav-links a:hover { color: var(--earth); }
.nav-icon { display: flex; align-items: center; opacity: 0.7; transition: opacity 0.2s; }
.nav-icon:hover { opacity: 1; color: var(--earth); }

/* ─── HERO ─── */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  position: relative;
  overflow: hidden;
}
.hero-left {
  display: flex; flex-direction: column; justify-content: center;
  padding: 140px 64px 80px 80px;
  animation: fadeLeft 1.2s ease 0.2s both;
}
@keyframes fadeLeft {
  from { opacity: 0; transform: translateX(-24px); }
  to   { opacity: 1; transform: translateX(0); }
}
.hero-en {
  font-family: 'Cormorant Garamond', serif;
  font-size: 13px; font-style: italic;
  letter-spacing: 0.32em; color: var(--bark);
  margin-bottom: 28px;
}
.hero-title {
  font-size: clamp(38px, 5vw, 64px);
  font-weight: 300; line-height: 1.45;
  letter-spacing: 0.16em; color: var(--deep);
  margin-bottom: 12px;
}
.hero-title span { color: var(--bark); }
.hero-tagline {
  font-family: 'Cormorant Garamond', serif;
  font-size: 16px; font-style: italic;
  color: var(--bark); letter-spacing: 0.2em;
  margin-bottom: 48px;
}
.hero-body {
  font-size: 15px; line-height: 2.3; color: var(--earth);
  max-width: 340px; margin-bottom: 56px;
  font-weight: 300;
}
.hero-cta {
  display: inline-flex; align-items: center; gap: 16px;
  font-size: 13px; letter-spacing: 0.26em;
  color: var(--earth); text-decoration: none;
  border-bottom: 1px solid var(--sand);
  padding-bottom: 6px;
  transition: gap 0.3s, border-color 0.3s;
  align-self: flex-start;
}
.hero-cta:hover { gap: 24px; border-color: var(--bark); }
.hero-cta::after { content: '→'; font-family: sans-serif; }

.hero-right {
  background: var(--parchment);
  position: relative; overflow: hidden;
  animation: fadeRight 1.2s ease 0.4s both;
}
@keyframes fadeRight {
  from { opacity: 0; transform: translateX(24px); }
  to   { opacity: 1; transform: translateX(0); }
}

.season-dots {
  position: absolute; bottom: 48px; left: 0; right: 0;
  display: flex; justify-content: center; gap: 12px;
}
.sdot {
  width: 8px; height: 8px; border-radius: 50%;
}
.sdot-spring { background: var(--accent-spring); }
.sdot-summer { background: var(--accent-summer); }
.sdot-autumn { background: var(--accent-autumn); }
.sdot-winter { background: var(--accent-winter); }

.hero-scroll {
  position: absolute; bottom: 48px; left: 80px;
  display: flex; align-items: center; gap: 12px;
  font-size: 10px; letter-spacing: 0.28em; color: var(--dusk);
  writing-mode: vertical-rl;
}
.scroll-bar {
  width: 1px; height: 48px;
  background: linear-gradient(to bottom, transparent, var(--sand));
  animation: growBar 2s ease-in-out infinite;
}
@keyframes growBar {
  0%,100% { transform: scaleY(0.3); opacity: 0.4; }
  50% { transform: scaleY(1); opacity: 1; }
}

/* ─── SEASON STRIP ─── */
.season-strip {
  display: grid; grid-template-columns: repeat(4,1fr);
  background: var(--deep);
  overflow: hidden;
}
.season-block {
  padding: 40px 32px;
  border-right: 1px solid rgba(255,255,255,0.05);
  transition: background 0.35s;
  cursor: default;
}
.season-block:last-child { border-right: none; }
.season-block:hover { background: rgba(255,255,255,0.04); }
.season-en {
  font-family: 'Cormorant Garamond', serif;
  font-size: 13px; font-style: italic;
  letter-spacing: 0.22em; color: rgba(255,255,255,0.7);
  margin-bottom: 8px;
}
.season-jp-title {
  font-size: 20px; font-weight: 300; color: rgba(255,255,255,0.92);
  letter-spacing: 0.18em; margin-bottom: 12px;
}
.season-dot-row { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.sdot-sm {
  width: 6px; height: 6px; border-radius: 50%;
  opacity: 0.6;
}
.season-count {
  font-size: 12px; letter-spacing: 0.16em;
  color: rgba(255,255,255,0.7);
}

/* ─── CONCEPT ─── */
.concept {
  display: grid; grid-template-columns: 1fr 1.2fr;
  gap: 0;
  padding: 120px 80px;
  max-width: 1200px; margin: 0 auto;
  align-items: start;
}
.concept-left { padding-right: 80px; }
.section-label {
  font-family: 'Cormorant Garamond', serif;
  font-size: 13px; font-style: italic;
  letter-spacing: 0.32em; color: var(--bark);
  margin-bottom: 20px;
}
.section-title {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 300; line-height: 1.6;
  letter-spacing: 0.14em; color: var(--deep);
  margin-bottom: 40px;
}
.concept-text {
  font-size: 15px; line-height: 2.3;
  color: var(--earth); font-weight: 300;
}
.concept-text p + p { margin-top: 24px; }
.concept-line {
  width: 40px; height: 1px;
  background: var(--sand); margin: 40px 0;
}
.concept-cards {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.concept-card {
  background: var(--parchment);
  border: 1px solid var(--sand);
  border-radius: 4px;
  padding: 28px 22px;
  transition: border-color 0.3s, transform 0.3s;
}
.concept-card:hover { border-color: var(--dusk); transform: translateY(-3px); }
.cc-season { font-size: 13px; letter-spacing: 0.22em; color: var(--bark); margin-bottom: 10px; }
.cc-jp { font-size: 22px; font-weight: 300; letter-spacing: 0.18em; color: var(--earth); margin-bottom: 8px; }
.cc-terms { font-size: 13px; letter-spacing: 0.12em; color: var(--earth); line-height: 2; }

/* ─── GALLERY ─── */
.gallery-section {
  background: var(--parchment);
  padding: 100px 80px;
}
.gallery-header {
  max-width: 1040px; margin: 0 auto 56px;
}
.gallery-grid {
  max-width: 1040px; margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.gallery-item {
  background: var(--cream);
  border: 1px solid var(--sand);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
  cursor: pointer;
  transition: border-color 0.3s;
}
.gallery-item:hover { border-color: var(--dusk); }
.gallery-thumb {
  aspect-ratio: 1/1; width: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; letter-spacing: 0.14em; color: var(--sand);
  font-family: 'Cormorant Garamond', serif; font-style: italic;
  flex-direction: column; gap: 10px;
  background: linear-gradient(160deg, var(--cream) 0%, var(--parchment) 100%);
}
.gallery-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  filter: saturate(0.9);
  -webkit-mask-image: radial-gradient(ellipse 88% 88% at 50% 50%,
    black 25%, rgba(0,0,0,0.5) 52%, transparent 80%);
  mask-image: radial-gradient(ellipse 88% 88% at 50% 50%,
    black 25%, rgba(0,0,0,0.5) 52%, transparent 80%);
}
.thumb-icon {
  width: 32px; height: 32px; opacity: 0.3;
}
.gallery-info {
  padding: 16px 18px;
  border-top: 1px solid var(--sand);
}
.gi-season { font-size: 12px; letter-spacing: 0.2em; color: var(--bark); margin-bottom: 4px; }
.gi-name { font-size: 14px; letter-spacing: 0.14em; color: var(--earth); font-weight: 300; }

/* ─── SHOP ─── */
.shop-section {
  padding: 120px 80px;
  max-width: 1200px; margin: 0 auto;
}
.shop-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 24px; margin-top: 56px; max-width: 720px;
}
.shop-card {
  border: 1px solid var(--sand);
  border-radius: 4px; padding: 40px 36px;
  text-decoration: none; color: inherit;
  transition: border-color 0.3s, background 0.3s, transform 0.3s;
  display: block;
}
.shop-card:hover {
  border-color: var(--bark);
  background: var(--parchment);
  transform: translateY(-4px);
}
.sc-icon {
  width: 36px; height: 1px; background: var(--sand);
  margin-bottom: 28px; transition: width 0.3s;
}
.shop-card:hover .sc-icon { width: 52px; background: var(--bark); }
.sc-name {
  font-size: 18px; font-weight: 400; letter-spacing: 0.18em;
  color: var(--deep); margin-bottom: 10px;
}
.sc-desc {
  font-size: 13px; letter-spacing: 0.12em; color: var(--earth);
  line-height: 2; margin-bottom: 28px; font-weight: 300;
}
.sc-link {
  font-family: 'Cormorant Garamond', serif;
  font-size: 14px; font-style: italic;
  letter-spacing: 0.16em; color: var(--bark);
}

/* ─── FOOTER ─── */
footer {
  background: var(--deep);
  padding: 64px 80px 48px;
  display: flex; justify-content: space-between; align-items: flex-end;
}
.footer-logo {
  font-size: 14px; letter-spacing: 0.24em;
  color: rgba(255,255,255,0.85); margin-bottom: 10px;
}
.footer-tagline {
  font-family: 'Cormorant Garamond', serif;
  font-size: 13px; font-style: italic;
  letter-spacing: 0.2em; color: rgba(255,255,255,0.65);
}
.footer-copy {
  font-size: 12px; letter-spacing: 0.14em;
  color: rgba(255,255,255,0.55);
}

/* ─── LIGHT SWEEP & FOG ─── */

/* 霧レイヤー: グレーの幕が上へ抜けていく */
#fog-overlay {
  position: fixed;
  inset: -40px;   /* blur の縁が見えないよう外にはみ出す */
  z-index: 9998;
  pointer-events: none;
  filter: blur(18px);
  background: linear-gradient(
    160deg,
    rgba(190,190,190,0.68) 0%,
    rgba(210,210,210,0.60) 50%,
    rgba(230,230,230,0.50) 100%
  );
  animation: fogClear 1.1s ease-out forwards;
}
@keyframes fogClear {
  0%   { opacity: 1; transform: translateY(0);    }
  100% { opacity: 0; transform: translateY(-6%);  }
}

/* 光レイヤー: 右上から平行に射し込む自然光がふっと現れて消える */
#light-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  filter: blur(10px);
  background: conic-gradient(
    from 195deg at 125% -35%,
    transparent            0deg,
    rgba(175,200,212,0.10) 4deg,
    rgba(175,200,212,0.26) 6deg,
    rgba(175,200,212,0.10) 8deg,
    transparent           14deg,
    rgba(175,200,212,0.08) 18deg,
    rgba(175,200,212,0.20) 20.5deg,
    rgba(175,200,212,0.08) 23deg,
    transparent           29deg,
    rgba(175,200,212,0.06) 33deg,
    rgba(175,200,212,0.15) 35deg,
    rgba(175,200,212,0.06) 37deg,
    transparent           43deg,
    rgba(175,200,212,0.04) 47deg,
    rgba(175,200,212,0.10) 49deg,
    rgba(175,200,212,0.04) 51deg,
    transparent           57deg,
    transparent          360deg
  );
  animation: lightRays 2.2s ease-out 0.6s forwards;
  opacity: 0;
}
@keyframes lightRays {
  0%   { opacity: 0; transform: translateX(6%) translateY(-6%); }
  25%  { opacity: 1; transform: translateX(0)  translateY(0);   }
  100% { opacity: 0; transform: translateX(0)  translateY(0);   }
}

/* ─── SCROLL REVEAL ─── */
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  nav { padding: 18px 24px; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-left { padding: 120px 32px 60px; }
  .hero-right { height: 300px; }
  .season-strip { grid-template-columns: repeat(2,1fr); }
  .concept { grid-template-columns: 1fr; padding: 80px 32px; }
  .concept-left { padding-right: 0; margin-bottom: 48px; }
  .gallery-section { padding: 80px 32px; }
  .gallery-grid { grid-template-columns: 1fr 1fr; }
  .shop-section { padding: 80px 32px; }
  .shop-grid { grid-template-columns: 1fr; max-width: 400px; }
  footer { flex-direction: column; gap: 24px; padding: 48px 32px 40px; }
}

/* ─── MOBILE ─── */
@media (max-width: 600px) {
  nav { padding: 16px 20px; }
  .nav-links { gap: 20px; }
  .hero-left { padding: 100px 24px 56px; }
  .season-block { padding: 24px 16px; }
  .season-count { letter-spacing: 0.1em; }
  .concept { padding: 64px 24px; }
  .concept-cards { grid-template-columns: 1fr; }
  .gallery-section { padding: 64px 24px; }
  .gallery-grid { grid-template-columns: 1fr; }
  .shop-section { padding: 64px 24px; }
  footer { padding: 48px 24px 36px; }
}