/* ==========================================
   3. Header
   ========================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 18px var(--content-px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.45s var(--ease-out), box-shadow 0.45s var(--ease-out);
}

.site-header.is-scrolled {
  background: rgba(251, 248, 249, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 1px 24px rgba(196, 143, 162, 0.14);
}

.site-header__logo {
  font-family: var(--font-mincho);
  font-size: 19px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--c-off-white);
  transition: color 0.45s var(--ease-out);
}

.site-header.is-scrolled .site-header__logo {
  color: var(--c-text-dark);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Pill link in header */
.pill-link--header {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 20px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.34) 0%,
      rgba(255, 255, 255, 0.16) 52%,
      rgba(255, 255, 255, 0.10) 100%
    );
  backdrop-filter: blur(18px) saturate(165%);
  -webkit-backdrop-filter: blur(18px) saturate(165%);
  font-family: var(--font-mincho);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: rgba(88, 67, 74, 0.92);
  box-shadow:
    0 10px 24px rgba(94, 71, 79, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.48),
    inset 0 -1px 0 rgba(255, 255, 255, 0.10);
  transition: background 0.3s, color 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.site-header.is-scrolled .pill-link--header {
  border-color: rgba(196, 143, 162, 0.26);
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.40) 0%,
      rgba(255, 255, 255, 0.18) 52%,
      rgba(255, 255, 255, 0.10) 100%
    );
  color: rgba(88, 67, 74, 0.94);
  backdrop-filter: blur(18px) saturate(165%);
  -webkit-backdrop-filter: blur(18px) saturate(165%);
}

/* Menu circle button */
.menu-circle {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  border: 1px solid rgba(255, 248, 251, 0.65);
  background: transparent;
  color: var(--c-off-white);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.3s, color 0.3s, background 0.3s;
  position: relative;
  z-index: 110;
}

.site-header.is-scrolled .menu-circle {
  border-color: var(--c-dusky-rose);
  color: var(--c-mauve);
}

.menu-circle__lines {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 22px;
}

.menu-circle__lines span {
  display: block;
  height: 1px;
  background: currentColor;
  transition: transform 0.35s var(--ease-out), opacity 0.35s;
}

.menu-circle.is-active .menu-circle__lines span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.menu-circle.is-active .menu-circle__lines span:nth-child(2) {
  opacity: 0;
}
.menu-circle.is-active .menu-circle__lines span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Navigation drawer */
.nav-drawer {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: var(--c-off-white);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px var(--content-px) var(--content-px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease-out);
}

.nav-drawer.is-open {
  opacity: 1;
  pointer-events: all;
}

.nav-drawer__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.nav-drawer__link {
  display: flex;
  align-items: baseline;
  gap: 16px;
  font-family: var(--font-mincho);
  font-size: 26px;
  font-weight: 300;
  color: var(--c-text-dark);
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--c-light-pink);
  padding-bottom: 14px;
  transition: color 0.25s;
}

.nav-drawer__link:hover {
  color: var(--c-mauve);
}

.nav-drawer__link .nav-en {
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--c-text-mid);
  font-style: italic;
  letter-spacing: 0.12em;
}

.nav-drawer__contact {
  margin-top: 48px;
}

.nav-drawer__contact-label {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-text-mid);
  margin-bottom: 12px;
  text-transform: uppercase;
}

/* ==========================================
   4. Footer
   ========================================== */
.site-footer {
  background: var(--c-deep);
  color: var(--c-text-light);
  padding: var(--sp-xl) var(--content-px) 40px;
}

.site-footer__inner {
  max-width: var(--max-content);
  margin-inline: auto;
}

.site-footer__logo {
  font-family: var(--font-mincho);
  font-size: 22px;
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}

.site-footer__tagline {
  font-family: var(--font-display);
  font-size: 12px;
  font-style: italic;
  color: var(--c-dusky-rose);
  letter-spacing: 0.1em;
  margin-bottom: var(--sp-lg);
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin-bottom: var(--sp-lg);
  padding-bottom: var(--sp-lg);
  border-bottom: 1px solid rgba(255, 248, 251, 0.1);
}

.site-footer__nav a {
  font-family: var(--font-sans);
  font-size: 13px;
  color: rgba(255, 248, 251, 0.6);
  letter-spacing: 0.04em;
  transition: color 0.2s;
}

.site-footer__nav a:hover {
  color: var(--c-cta);
}

.site-footer__area {
  font-family: var(--font-sans);
  font-size: 12px;
  color: rgba(255, 248, 251, 0.4);
  line-height: 1.8;
  margin-bottom: 20px;
}

.site-footer__copy {
  font-family: var(--font-sans);
  font-size: 11px;
  color: rgba(255, 248, 251, 0.3);
  letter-spacing: 0.04em;
}

/* ==========================================
   5. CTA Buttons
   ========================================== */
.pill-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 44px;
  border-radius: 999px;
  background: var(--c-cta);
  color: var(--c-off-white);
  font-family: var(--font-mincho);
  font-size: 15px;
  letter-spacing: 0.08em;
  box-shadow: 0 8px 28px rgba(215, 167, 184, 0.32);
  transition: transform 0.28s var(--ease-out), box-shadow 0.28s, background 0.28s;
}

.pill-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 36px rgba(215, 167, 184, 0.44);
  background: var(--c-cta-hover);
}

.pill-cta--hero {
  background: rgba(255, 248, 251, 0.78);
  color: var(--c-text-dark);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.pill-cta--hero:hover {
  background: rgba(255, 248, 251, 0.94);
  transform: translateY(-3px);
}

.pill-cta--line {
  background: #06C755;
  box-shadow: 0 8px 24px rgba(6, 199, 85, 0.28);
}

.pill-cta--line:hover {
  background: #04b34c;
  box-shadow: 0 12px 32px rgba(6, 199, 85, 0.4);
}

.pill-cta--phone {
  background: var(--c-off-white);
  color: var(--c-text-dark);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.pill-cta--phone:hover {
  background: #fff;
  transform: translateY(-3px);
}

.circle-cta {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 1.5px solid var(--c-dusky-rose);
  background: transparent;
  color: var(--c-dusky-rose);
  font-size: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.28s var(--ease-out);
  flex-shrink: 0;
}

.circle-cta:hover {
  background: var(--c-dusky-rose);
  color: var(--c-off-white);
  transform: translateY(-2px);
}

/* ==========================================
   6. Curve Dividers
   ========================================== */
.curve-top,
.curve-bottom {
  display: block;
  width: 100%;
  overflow: hidden;
  line-height: 0;
  position: relative;
  z-index: 2;
  isolation: isolate;
}

.curve-top {
  margin-bottom: -1px;
}

.curve-bottom {
  margin-top: -1px;
}

.curve-top svg,
.curve-bottom svg {
  display: block;
  width: calc(100% + 2px);
  margin-left: -1px;
  backface-visibility: hidden;
  transform: translateZ(0);
}

/* ==========================================
   7. Section Heading
   ========================================== */
.section-heading {
  margin-bottom: var(--sp-lg);
}

.section-heading__eyebrow {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-mauve);
  margin-bottom: 4px;
  font-style: italic;
  display: block;
}

.section-heading__title {
  font-family: var(--font-display);
  font-size: clamp(48px, 13vw, 72px);
  font-weight: 300;
  line-height: 0.95;
  letter-spacing: 0.02em;
  color: var(--c-text-dark);
  font-style: italic;
}

.section-heading__title-ja {
  display: block;
  font-family: var(--font-mincho);
  font-size: 16px;
  font-weight: 300;
  letter-spacing: 0.14em;
  color: var(--c-text-mid);
  margin-top: 10px;
  font-style: normal;
}

.section-heading__lead {
  font-family: var(--font-mincho);
  font-size: 13.5px;
  line-height: 2.0;
  color: var(--c-text-mid);
  margin-top: 16px;
  max-width: 74vw;
}

/* ==========================================
   8. Fade-up Animation
   ========================================== */
.fade-up {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--dur-fade) var(--ease-out),
              transform var(--dur-fade) var(--ease-out);
}

.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up[data-delay="100"] { transition-delay: 0.1s; }
.fade-up[data-delay="200"] { transition-delay: 0.2s; }
.fade-up[data-delay="300"] { transition-delay: 0.3s; }
.fade-up[data-delay="400"] { transition-delay: 0.4s; }
.fade-up[data-delay="500"] { transition-delay: 0.5s; }

@media (prefers-reduced-motion: reduce) {
  .fade-up {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ==========================================
   9. Float Animation (CSS only, lightweight)
   ========================================== */
@keyframes gentleFloat {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-10px); }
}

@keyframes gentleFloatSlow {
  0%, 100% { transform: translateY(0px) rotate(-2deg); }
  50%       { transform: translateY(-8px) rotate(2deg); }
}

@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

@media (prefers-reduced-motion: reduce) {
  [class*="float"],
  .hero__deco {
    animation: none !important;
  }
}


/* ==========================================
   18. Loading Screen
   ========================================== */
.site-loading {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--c-off-white);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  transition: opacity 0.7s var(--ease-out), visibility 0.7s;
}

.site-loading.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* Decorative concentric circles */
.site-loading__circles {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  overflow: hidden;
}

.site-loading__circle {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--c-pink-beige);
}

.site-loading__circle:nth-child(1) {
  width: 200px;
  height: 200px;
  animation: loadingPulse 3s ease-in-out infinite;
}

.site-loading__circle:nth-child(2) {
  width: 300px;
  height: 300px;
  border-color: var(--c-light-pink);
  animation: loadingPulse 3s ease-in-out 0.4s infinite;
}

.site-loading__circle:nth-child(3) {
  width: 420px;
  height: 420px;
  border-color: rgba(246, 231, 238, 0.5);
  animation: loadingPulse 3s ease-in-out 0.8s infinite;
}

@keyframes loadingPulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.03); }
}

/* Center content */
.site-loading__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.site-loading__logo {
  font-family: var(--font-mincho);
  font-size: 36px;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--c-text-dark);
  opacity: 0;
  transform: translateY(12px);
  animation: loadingFadeUp 0.7s var(--ease-out) 0.15s forwards;
  margin-bottom: 6px;
}

.site-loading__sub {
  font-family: var(--font-display);
  font-size: 13px;
  font-style: italic;
  letter-spacing: 0.22em;
  color: var(--c-mauve);
  opacity: 0;
  transform: translateY(10px);
  animation: loadingFadeUp 0.7s var(--ease-out) 0.35s forwards;
  margin-bottom: 36px;
}

/* Progress bar */
.site-loading__bar {
  width: 100px;
  height: 1px;
  background: var(--c-pink-beige);
  overflow: hidden;
  opacity: 0;
  animation: loadingFadeUp 0.5s var(--ease-out) 0.5s forwards;
}

.site-loading__bar-fill {
  height: 100%;
  width: 0;
  background: var(--c-dusky-rose);
  animation: loadingBarFill 1.4s var(--ease-out) 0.5s forwards;
}

@keyframes loadingFadeUp {
  to { opacity: 1; transform: translateY(0); }
}

@keyframes loadingBarFill {
  from { width: 0; }
  to   { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .site-loading__circle,
  .site-loading__logo,
  .site-loading__sub,
  .site-loading__bar,
  .site-loading__bar-fill {
    animation: none;
    opacity: 1;
    transform: none;
  }
  .site-loading__bar-fill {
    width: 100%;
  }
}

/* ==========================================
   21. Vertical Section Label
   ========================================== */
.vert-section-label {
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.26em;
  color: rgba(196, 143, 162, 0.28);
  font-style: italic;
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
}


/* ==========================================
   37. Section Shape Dividers
   ========================================== */
.shape-divider {
  display: block;
  width: 100%;
  overflow: hidden;
  line-height: 0;
  position: relative;
  z-index: 2;
  isolation: isolate;
  margin-top: -1px;
  margin-bottom: -1px;
}

.shape-divider svg {
  display: block;
  width: calc(100% + 2px);
  margin-left: -1px;
  backface-visibility: hidden;
  transform: translateZ(0);
}

.shape-divider--arch-wide svg    { height: 80px; }
.shape-divider--arch-soft svg    { height: 56px; }
.shape-divider--scoop-right svg  { height: 56px; }
.shape-divider--scoop-left svg   { height: 56px; }
.shape-divider--diagonal svg     { height: 56px; }
.shape-divider--diagonal-rev svg { height: 56px; }