/* ===================================================
   KAWATA hokkaido — style.css
   =================================================== */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-deep:    #0E1316;
  --bg-surface: #151B1F;
  --bg-card:    #1C2328;
  --text-1:     #EFEAE0;
  --text-2:     #8A959B;
  --accent:     #A5C9D1;
  --accent-dim: rgba(165, 201, 209, 0.28);
  --divider:    #232A2F;
  --radius:     2px;
  --max-w:      1100px;
  --section-py: clamp(5rem, 12vw, 9rem);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--bg-deep);
  color: var(--text-1);
  font-family: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', serif;
  font-weight: 300;
  line-height: 2;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

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

/* --- i18n --- */
html[lang="ja"] .en { display: none !important; }
html[lang="en"] .ja { display: none !important; }

/* --- Utility --- */
.section__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--section-py) clamp(1.5rem, 5vw, 4rem);
}

.section__label {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.section__num {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 300;
  color: var(--accent);
  line-height: 1;
  letter-spacing: 0.05em;
}

.section__title {
  font-size: clamp(0.7rem, 1.2vw, 0.85rem);
  letter-spacing: 0.25em;
  color: var(--text-2);
  text-transform: uppercase;
}

/* Fade-up animation */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.85s cubic-bezier(0.22,1,0.36,1),
              transform 0.85s cubic-bezier(0.22,1,0.36,1);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }

/* Decorative rule */
.deco-rule {
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
  opacity: 0.5;
}

/* ===================================================
   Navigation
   =================================================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background 0.5s ease, border-color 0.5s ease;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(13, 18, 20, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom-color: var(--divider);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.4rem clamp(1.5rem, 5vw, 4rem);
}

.nav__logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  transition: opacity 0.3s;
}
.nav__logo:hover { opacity: 0.75; }

.nav__logo-img {
  display: block;
  height: 32px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.92;
  transition: opacity 0.3s;
}
.nav__logo:hover .nav__logo-img { opacity: 0.7; }

.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.nav__links a {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: rgba(239, 234, 224, 0.85);
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.5);
  transition: color 0.3s;
  position: relative;
}
.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}
.nav__links a:hover { color: var(--text-1); }
.nav__links a:hover::after { transform: scaleX(1); }

.nav__reserve {
  border: 1px solid var(--accent-dim) !important;
  padding: 0.45em 1.1em;
  border-radius: var(--radius);
  color: var(--accent) !important;
  transition: background 0.3s, color 0.3s !important;
}
.nav__reserve:hover {
  background: var(--accent) !important;
  color: var(--bg-deep) !important;
}
.nav__reserve::after { display: none !important; }

/* Language toggle */
.lang-toggle {
  background: none;
  border: 1px solid var(--divider);
  color: var(--text-2);
  font-family: inherit;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  padding: 0.45em 0.9em;
  border-radius: var(--radius);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.25em;
  transition: color 0.3s, border-color 0.3s;
  margin-left: 0.25rem;
}
.lang-toggle:hover {
  color: var(--text-1);
  border-color: var(--accent-dim);
}
.lang-toggle__sep { opacity: 0.4; }
.lang-toggle__ja,
.lang-toggle__en { transition: color 0.3s; color: var(--text-2); }
.lang-toggle--en .lang-toggle__en,
.lang-toggle:not(.lang-toggle--en) .lang-toggle__ja {
  color: var(--accent);
}

.lang-toggle--drawer {
  margin-top: 1rem;
  margin-left: 0;
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav__hamburger span {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--text-1);
  transition: transform 0.35s ease, opacity 0.35s ease;
  transform-origin: center;
}
.nav__hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ===================================================
   Mobile Drawer
   =================================================== */
.nav-drawer {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
}
.nav-drawer.open {
  display: block;
  pointer-events: auto;
}

.nav-drawer__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.35s;
}
.nav-drawer.open .nav-drawer__overlay { opacity: 1; }

.nav-drawer__menu {
  position: absolute;
  top: 0; right: 0;
  width: min(280px, 80vw);
  height: 100%;
  background: var(--bg-surface);
  border-left: 1px solid var(--divider);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2.5rem;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.22,1,0.36,1);
}
.nav-drawer.open .nav-drawer__menu { transform: translateX(0); }

.nav-drawer__menu a {
  font-size: 1rem;
  letter-spacing: 0.2em;
  color: var(--text-2);
  transition: color 0.3s;
}
.nav-drawer__menu a:hover { color: var(--text-1); }

/* ===================================================
   Hero
   =================================================== */
.hero {
  position: relative;
  height: 100svh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: var(--bg-deep);
}
.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom,
    rgba(17,16,16,0.3) 0%,
    rgba(17,16,16,0.5) 60%,
    rgba(17,16,16,0.85) 100%);
}
.hero__img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.65;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.hero__rule {
  width: clamp(120px, 25vw, 200px);
  height: 1px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
}

.hero__title-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.hero__overflow {
  overflow: hidden;
}

.hero__logo {
  display: block;
  width: clamp(260px, 52vw, 560px);
  height: auto;
  filter: brightness(0) invert(1);
  opacity: 0.95;
  transform: translateY(110%);
  animation: wipe-up 1.1s cubic-bezier(0.22,1,0.36,1) 0.2s forwards;
}

.hero__ja {
  display: inline-block;
  font-size: clamp(0.8rem, 1.8vw, 1.15rem);
  font-weight: 300;
  letter-spacing: 0.4em;
  color: var(--text-2);
  transform: translateY(110%);
  animation: wipe-up 1.1s cubic-bezier(0.22,1,0.36,1) 0.45s forwards;
}

.hero__sub-wrap { margin-top: 0.5rem; }
.hero__sub {
  display: inline-block;
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(0.7rem, 1.3vw, 0.9rem);
  letter-spacing: 0.3em;
  color: var(--text-2);
  font-style: italic;
  transform: translateY(110%);
  animation: wipe-up 1.1s cubic-bezier(0.22,1,0.36,1) 0.65s forwards;
}

@keyframes wipe-up {
  to { transform: translateY(0); }
}

.hero__scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  opacity: 0;
  animation: fade-in 1s ease 1.4s forwards;
}
.hero__scroll-line {
  display: block;
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scroll-line 2s ease-in-out 1.4s infinite;
}
@keyframes scroll-line {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 1; }
  50%  { transform: scaleY(1); transform-origin: top; opacity: 1; }
  51%  { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}
@keyframes fade-in { to { opacity: 1; } }

/* ===================================================
   Concept
   =================================================== */
.concept { background: var(--bg-deep); }

.concept__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 8vw, 6rem);
  align-items: start;
}

.concept__headline {
  font-size: clamp(1.5rem, 3.5vw, 2.3rem);
  font-weight: 400;
  letter-spacing: 0.08em;
  line-height: 1.7;
  margin-bottom: 2rem;
  color: var(--text-1);
}

.concept__text p {
  font-size: clamp(0.875rem, 1.3vw, 0.95rem);
  color: var(--text-2);
  margin-bottom: 1.5rem;
}

.concept__image { position: relative; }

.concept__img-placeholder {
  position: relative;
  aspect-ratio: 3/4;
  background: var(--bg-card);
  overflow: hidden;
}
.concept__img-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--divider) 25%, transparent 25%,
    transparent 50%, var(--divider) 50%, var(--divider) 75%, transparent 75%);
  background-size: 4px 4px;
  opacity: 0.3;
}
.concept__img-placeholder img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
.concept__img-placeholder img[style*="display: none"],
.concept__img-placeholder img:not([src]),
.concept__img-placeholder img[src=""] { display: none; }

/* ===================================================
   Course
   =================================================== */
.course { background: var(--bg-surface); }

.course__content { max-width: 680px; margin: 0 auto; }

.course__headline {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 400;
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  text-align: center;
}

.course__desc {
  font-size: 0.875rem;
  color: var(--text-2);
  text-align: center;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
  line-height: 2;
}

.course__list {
  list-style: none;
  border-top: 1px solid var(--divider);
}

.course__item {
  display: grid;
  grid-template-columns: 3.5rem 6rem 1fr;
  align-items: baseline;
  gap: 0.5rem 1.5rem;
  padding: 1.3rem 0;
  border-bottom: 1px solid var(--divider);
}

.course__item-jp {
  font-size: clamp(0.9rem, 1.4vw, 1rem);
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--text-1);
}

.course__item-en {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.85rem;
  font-style: italic;
  color: var(--accent);
  letter-spacing: 0.08em;
}

.course__item-note {
  font-size: 0.8rem;
  color: var(--text-2);
  letter-spacing: 0.05em;
}

.course__price {
  margin-top: clamp(2rem, 5vw, 3rem);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.course__price-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--text-1);
}
.course__price-num small { font-size: 0.6em; }

.course__price-tax {
  font-size: 0.45em;
  letter-spacing: 0.1em;
  color: var(--text-2);
  vertical-align: middle;
  margin-left: 0.3em;
}

.course__price-note {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--text-2);
}

.course__desc-note {
  font-size: 0.75em;
  letter-spacing: 0.1em;
  color: var(--text-2);
}

.course__notice {
  margin-top: 1.5rem;
  font-size: 0.75rem;
  color: var(--text-2);
  text-align: center;
  letter-spacing: 0.05em;
}

/* ===================================================
   Gallery
   =================================================== */
.gallery { background: var(--bg-deep); }

.gallery__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 2.5rem;
}

.gallery__item {
  aspect-ratio: 4/5;
  overflow: hidden;
  background: var(--bg-card);
  position: relative;
}

.gallery__item--empty img { display: none; }

.gallery__item--empty::after {
  content: 'Photo';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--divider);
}

.gallery__item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.25,0.46,0.45,0.94),
              filter 0.7s ease;
  filter: brightness(0.85);
}
.gallery__item:hover img {
  transform: scale(1.05);
  filter: brightness(1);
}

.gallery__instagram {
  text-align: center;
}

.gallery__ig-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  color: var(--text-2);
  border: 1px solid var(--divider);
  padding: 0.7em 1.8em;
  border-radius: var(--radius);
  transition: color 0.3s, border-color 0.3s;
}
.gallery__ig-link:hover {
  color: var(--text-1);
  border-color: var(--accent-dim);
}

/* ===================================================
   Reviews
   =================================================== */
.reviews { background: var(--bg-surface); }

.reviews__platforms {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: clamp(3rem, 6vw, 4rem);
}

.reviews__platform {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: clamp(1.5rem, 4vw, 2.2rem) 1rem;
  border: 1px solid var(--divider);
  background: var(--bg-deep);
  border-radius: var(--radius);
  transition: border-color 0.3s, transform 0.3s;
  text-align: center;
}
.reviews__platform:hover {
  border-color: var(--accent-dim);
  transform: translateY(-2px);
}

.reviews__platform-name {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.4rem, 2.8vw, 1.8rem);
  letter-spacing: 0.18em;
  color: var(--text-1);
}

.reviews__platform-sub {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--text-2);
}

.reviews__platform-cta {
  margin-top: 0.3rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  transition: gap 0.3s;
}
.reviews__platform:hover .reviews__platform-cta { gap: 0.7rem; }

.reviews__quotes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.reviews__quote {
  padding: 1.5rem;
  border-left: 1px solid var(--accent-dim);
  background: transparent;
}
.reviews__quote p {
  font-size: 0.88rem;
  color: var(--text-1);
  line-height: 2;
  margin-bottom: 1rem;
}
.reviews__quote footer {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--text-2);
  font-style: italic;
}

/* ===================================================
   Access
   =================================================== */
.access { background: var(--bg-surface); }

.access__body {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(3rem, 8vw, 6rem);
  align-items: start;
}

.access__dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.6rem 2rem;
  align-items: baseline;
}

.access__dl dt {
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--text-2);
  text-transform: uppercase;
  white-space: nowrap;
  padding-top: 0.15em;
}

.access__dl dd {
  font-size: 0.875rem;
  color: var(--text-1);
  letter-spacing: 0.05em;
  line-height: 1.8;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--divider);
}
.access__dl dd:last-child { border-bottom: none; }

.access__dl dd a {
  color: var(--accent);
  transition: opacity 0.3s;
}
.access__dl dd a:hover { opacity: 0.75; }

.access__small {
  font-size: 0.8rem;
  color: var(--text-2);
}

.access__map {
  height: 400px;
  background: var(--bg-card);
  overflow: hidden;
  border: 1px solid var(--divider);
}

.access__map iframe {
  width: 100%; height: 100%;
  filter: grayscale(1) brightness(0.65) invert(0.1);
  border: none;
}

.access__map-link {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.75rem;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--text-2);
  transition: color 0.3s;
}
.access__map-link:hover { color: var(--accent); }

/* ===================================================
   Reserve
   =================================================== */
.reserve { background: var(--bg-deep); }

.reserve__body { max-width: 580px; margin: 0 auto; }

.reserve__tel {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}
.reserve__tel-label {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--text-2);
}
.reserve__tel-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 300;
  letter-spacing: 0.12em;
  color: var(--text-1);
  transition: color 0.3s;
}
.reserve__tel-num:hover { color: var(--accent); }
.reserve__tel-hours {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--text-2);
}

.reserve__divider {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin: 1.5rem 0;
  color: var(--text-2);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
}
.reserve__divider::before,
.reserve__divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--divider);
}

.reserve__ig {
  text-align: center;
  margin-bottom: 2rem;
}
.reserve__ig-label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--text-2);
  margin-bottom: 0.75rem;
}
.reserve__ig-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  transition: opacity 0.3s;
}
.reserve__ig-link:hover { opacity: 0.75; }

/* Form */
.reserve__form { display: flex; flex-direction: column; gap: 1.8rem; }

.form__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.8rem;
}
.form__row .form__group:last-child { width: 120px; }

.form__group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form__group label {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--text-2);
}

.form__req { color: var(--accent); }

.form__group input,
.form__group textarea {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--divider);
  padding: 0.6rem 0;
  color: var(--text-1);
  font-family: 'Noto Serif JP', serif;
  font-size: 0.9rem;
  font-weight: 300;
  outline: none;
  transition: border-color 0.3s;
  resize: vertical;
}
.form__group input::placeholder,
.form__group textarea::placeholder { color: var(--divider); }
.form__group input:focus,
.form__group textarea:focus { border-bottom-color: var(--accent); }

.form__submit {
  align-self: center;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.9em 3em;
  font-family: 'Noto Serif JP', serif;
  font-size: 0.85rem;
  letter-spacing: 0.25em;
  cursor: pointer;
  transition: background 0.35s, color 0.35s;
  border-radius: var(--radius);
}
.form__submit:hover {
  background: var(--accent);
  color: var(--bg-deep);
}

.reserve__web {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}
.reserve__web-label {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--text-2);
}
.reserve__web-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.9em 2.5em;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  border-radius: var(--radius);
  transition: background 0.35s, color 0.35s;
}
.reserve__web-btn:hover {
  background: var(--accent);
  color: var(--bg-deep);
}
.reserve__web-note {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--text-2);
}

/* ===================================================
   Footer
   =================================================== */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--divider);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr;
  gap: clamp(2rem, 5vw, 4rem);
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 5rem) clamp(1.5rem, 5vw, 4rem);
}

.footer__logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  margin-bottom: 1rem;
  transition: opacity 0.3s;
}
.footer__logo:hover { opacity: 0.7; }
.footer__logo-img {
  display: block;
  height: 32px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

.footer__tagline {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--text-2);
}

.footer__col--nav nav {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.footer__col--nav a {
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  color: var(--text-2);
  transition: color 0.3s;
}
.footer__col--nav a:hover { color: var(--text-1); }

.footer__col--info address {
  font-style: normal;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--text-2);
  line-height: 1.9;
  margin-bottom: 1rem;
}
.footer__col--info address a {
  color: var(--accent);
  transition: opacity 0.3s;
}
.footer__col--info address a:hover { opacity: 0.75; }

.footer__ig {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--text-2);
  transition: color 0.3s;
}
.footer__ig:hover { color: var(--text-1); }

.footer__bottom {
  border-top: 1px solid var(--divider);
  text-align: center;
  padding: 1.4rem;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--text-2);
}

/* ===================================================
   Sticky Mobile CTA
   =================================================== */
.sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 80;
  padding: 0.6rem;
  gap: 0.6rem;
  background: rgba(13, 18, 20, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--divider);
  padding-bottom: calc(0.6rem + env(safe-area-inset-bottom, 0px));
}

.sticky-cta__btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.85rem 0.6rem;
  font-size: 0.82rem;
  letter-spacing: 0.15em;
  border-radius: var(--radius);
  transition: background 0.25s, color 0.25s, border-color 0.25s;
}
.sticky-cta__btn--tel {
  border: 1px solid var(--divider);
  color: var(--text-1);
}
.sticky-cta__btn--tel:active {
  background: var(--bg-card);
}
.sticky-cta__btn--web {
  background: var(--accent);
  color: var(--bg-deep);
  font-weight: 500;
}
.sticky-cta__btn--web:active {
  opacity: 0.85;
}

/* ===================================================
   Responsive
   =================================================== */
@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }

  .sticky-cta { display: flex; }

  main { padding-bottom: 72px; }
  .footer__bottom { padding-bottom: calc(1.4rem + 72px); }

  .concept__body { grid-template-columns: 1fr; }
  .concept__image { order: -1; }
  .concept__img-placeholder { aspect-ratio: 16/9; }

  .gallery__grid { grid-template-columns: repeat(2, 1fr); }

  .reviews__platforms { grid-template-columns: 1fr; }
  .reviews__quotes { grid-template-columns: 1fr; }

  .access__body { grid-template-columns: 1fr; }
  .access__map { height: 280px; }

  .footer__inner { grid-template-columns: 1fr 1fr; }
  .footer__col--brand { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  .course__item {
    grid-template-columns: 3rem 1fr;
    grid-template-rows: auto auto;
  }
  .course__item-note {
    grid-column: 1 / -1;
    padding-bottom: 0.3rem;
  }

  .form__row { grid-template-columns: 1fr; }
  .form__row .form__group:last-child { width: auto; }

  .footer__inner { grid-template-columns: 1fr; }
  .footer__col--brand { grid-column: auto; }

  .access__dl { grid-template-columns: 1fr; }
  .access__dl dt { padding-bottom: 0; }
  .access__dl dd { border-bottom-color: transparent; }
}