/* ============================================================
   Lunette Nail — style.css
   Design System: juri-portfolio × briller × nailstation
   ============================================================ */

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: 'Noto Serif JP', 'Hiragino Mincho ProN', serif;
  font-size: 16px;
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

/* ============================================================
   2. :root — Design Tokens
   ============================================================ */
:root {
  /* Colors */
  --color-bg: #fafaf8;
  --color-bg-alt: #f5f3ef;
  --color-text: #1a1a1a;
  --color-text-sub: #6b6b6b;
  --color-text-light: #a0a0a0;
  --color-border: #e5e5e2;
  --color-pink: #c8838e;
  --color-pink-dark: #b06570;
  --color-pink-pale: #f5e8ea;

  /* Typography */
  --font-serif-en: 'Cormorant Garamond', 'Times New Roman', serif;
  --font-sans: 'Jost', 'Helvetica Neue', sans-serif;
  --font-serif-ja: 'Noto Serif JP', 'Hiragino Mincho ProN', serif;

  /* Scale */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.125rem;
  --text-lg: 1.5rem;
  --text-xl: 2.5rem;
  --text-2xl: 4rem;
  --text-3xl: 7rem;

  /* Weights */
  --font-thin: 300;
  --font-regular: 400;
  --font-medium: 500;

  /* Leading */
  --leading-tight: 1.2;
  --leading-normal: 1.7;
  --leading-loose: 1.9;

  /* Tracking */
  --tracking-tight: -0.03em;
  --tracking-wide: 0.1em;
  --tracking-widest: 0.22em;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;
  --space-2xl: 12rem;

  /* Header */
  --header-h: 72px;
}

/* ============================================================
   3. HEADER
   ============================================================ */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  transition:
    background 0.4s ease,
    box-shadow 0.4s ease;
}

#site-header.scrolled {
  background: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--color-border);
}

/* ナビ展開中は backdrop-filter を外す（fixed子要素の基準ブロック問題を防ぐ） */
#site-header.nav-is-open {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 5vw, 4rem);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-serif-en);
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.18em;
  color: var(--color-text);
  text-transform: none;
  transition: opacity 0.3s;
}

.logo:hover {
  opacity: 0.6;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-link {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  color: var(--color-text);
  position: relative;
  padding-bottom: 2px;
  transition: color 0.3s;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-text);
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

.nav-cta {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  color: #fff;
  background: var(--color-pink);
  border-radius: 9999px;
  padding: 0.55rem 1.6rem;
  transition: background 0.3s ease;
}

.nav-cta:hover {
  background: var(--color-pink-dark);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  width: 36px;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--color-text);
  transition:
    transform 0.3s ease,
    opacity 0.3s ease;
  transform-origin: center;
}

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

/* Fixed CTA */
.fixed-cta {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 99;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  color: #fff;
  background: var(--color-pink);
  border-radius: 9999px;
  padding: 0.85rem 1.8rem;
  box-shadow: 0 4px 24px rgba(200, 131, 142, 0.35);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition:
    opacity 0.4s ease,
    transform 0.4s ease,
    background 0.3s ease;
}

.fixed-cta.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.fixed-cta:hover {
  background: var(--color-pink-dark);
}

/* ============================================================
   4. HERO
   ============================================================ */
#hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: flex-end;
  padding-top: var(--header-h);
  overflow-x: clip;
}

.hero-inner {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 5vw, 4rem) 5rem;
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 1rem;
  align-items: flex-end;
}

.hero-label {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 300;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-sub);
  margin-bottom: 1rem;
}

.hero-title {
  font-family: var(--font-serif-ja);
  font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 300;
  line-height: 1.3;
  letter-spacing: 0.04em;
  margin-bottom: 0;
  display: flex;
  flex-direction: column;
}

.hero-title-line {
  display: block;
  color: #3d3d3d;
}

.hero-title-line--accent {
  color: var(--color-pink);
}

.hero-divider {
  width: 4rem;
  height: 1px;
  background: var(--color-border);
  margin: 1.4rem 0;
}

.hero-sub {
  font-family: var(--font-serif-ja);
  font-size: var(--text-base);
  font-weight: 300;
  line-height: var(--leading-loose);
  color: var(--color-text-sub);
  margin-bottom: 1.75rem;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: flex-end;
}

.hero-img {
  width: 100%;
  aspect-ratio: 5 / 4;
  object-fit: cover;
  object-position: center;
  display: block;
}

.hero-bg-text {
  position: absolute;
  bottom: -0.15em;
  right: -0.05em;
  font-family: var(--font-serif-en);
  font-size: clamp(4.2rem, 14vw, 12.6rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px var(--color-border);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.hero-text-wrap {
  position: relative;
  z-index: 1;
}
.hero-visual {
  position: relative;
  z-index: 1;
}

/* Page-load animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-load {
  opacity: 0;
  animation: fadeInUp 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}

/* ============================================================
   5. Section Base
   ============================================================ */
.section {
  padding: var(--space-xl) 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 5vw, 5rem);
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: var(--space-lg);
}

.section-heading__en {
  font-family: var(--font-serif-en);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1;
  color: #3d3d3d;
}

.section-heading__ja {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  color: var(--color-pink);
  text-transform: uppercase;
}

/* Scroll-triggered fade */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.7s ease,
    transform 0.7s ease;
}

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

/* Text link */
.text-link {
  position: relative;
  display: inline-block;
  color: var(--color-text);
}

.text-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-pink);
  transition: width 0.3s ease;
}

.text-link:hover::after {
  width: 100%;
}

/* Buttons */
.btn-pink {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-pink);
  color: #fff;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.08em;
  border-radius: 9999px;
  padding: 1rem 2.5rem;
  border: none;
  cursor: pointer;
  transition:
    background 0.3s ease,
    transform 0.2s ease;
}

.btn-pink:hover {
  background: var(--color-pink-dark);
  transform: translateY(-2px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  border: 1px solid var(--color-text);
  padding: 0.85rem 2rem;
  transition:
    background 0.3s ease,
    color 0.3s ease,
    border-color 0.3s ease;
}

.btn-outline:hover {
  background: var(--color-pink);
  border-color: var(--color-pink);
  color: #fff;
}

/* Tags */
.tag {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--color-pink);
  border: 1px solid var(--color-pink);
  border-radius: 9999px;
  padding: 0.3rem 0.9rem;
  font-weight: 400;
}

/* ============================================================
   6. CONCEPT
   ============================================================ */
.concept-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: start;
}

.concept-lead {
  font-family: var(--font-serif-ja);
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: 0.06em;
  line-height: var(--leading-normal);
  margin-bottom: 1.5rem;
}

.concept-body {
  font-family: var(--font-serif-ja);
  font-size: var(--text-base);
  font-weight: 300;
  line-height: var(--leading-loose);
  color: var(--color-text-sub);
  margin-bottom: 2rem;
}

.concept-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.concept-reasons-label {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
}

.reason-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.reason-item {
  display: flex;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.reason-item:first-child {
  border-top: 1px solid var(--color-border);
}

.reason-num {
  font-family: var(--font-serif-en);
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--color-pink);
  min-width: 2.5rem;
  letter-spacing: 0.06em;
  padding-top: 0.1rem;
}

.reason-item strong {
  font-family: var(--font-serif-ja);
  font-size: var(--text-base);
  font-weight: 500;
  display: block;
  margin-bottom: 0.35rem;
}

.reason-item p {
  font-size: var(--text-sm);
  font-weight: 300;
  color: var(--color-text-sub);
  line-height: var(--leading-normal);
}

/* ============================================================
   7. MENU
   ============================================================ */
.menu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}

.menu-card {
  background: #fff;
  border: 1px solid var(--color-border);
  padding: 2rem;
  position: relative;
  transition:
    box-shadow 0.3s ease,
    transform 0.3s ease;
}

.menu-card:hover {
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.07);
  transform: translateY(-3px);
}

.menu-card__badge {
  position: absolute;
  top: -1px;
  right: 1.5rem;
  background: var(--color-pink);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  padding: 0.3rem 0.8rem;
}

.menu-card__category {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: var(--tracking-widest);
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.menu-card__title {
  font-family: var(--font-serif-ja);
  font-size: var(--text-md);
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
  line-height: var(--leading-tight);
}

.menu-card__desc {
  font-size: var(--text-sm);
  font-weight: 300;
  color: var(--color-text-sub);
  line-height: var(--leading-loose);
  margin-bottom: 1rem;
}

.menu-card__includes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.menu-card__includes span {
  font-family: var(--font-sans);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--color-text-sub);
  background: var(--color-bg-alt);
  padding: 0.25rem 0.7rem;
  border-radius: 2px;
}

.menu-card__price {
  font-family: var(--font-serif-en);
  font-size: 1.8rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--color-text);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.menu-card__price small {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 300;
  color: var(--color-text-sub);
}

.menu-card__duration {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-text-light);
  letter-spacing: 0.06em;
}

.menu-note {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-text-light);
  line-height: var(--leading-normal);
  letter-spacing: 0.04em;
}

/* ============================================================
   8. GALLERY
   ============================================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.gallery-item {
  overflow: hidden;
}

/* ▼ 施術写真に差し替えてください（正方形・約480×480px） */
.gallery-placeholder {
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 300;
  transition: transform 0.5s ease;
  background-size: cover;
  background-position: center;
}

.gallery-item:hover .gallery-placeholder,
.gallery-item:hover .gallery-img {
  transform: scale(1.03);
}

.gallery-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.5s ease;
}

.gallery-placeholder--1 {
  background-color: #d4b8bb;
}
.gallery-placeholder--2 {
  background-color: #c9b8c4;
}
.gallery-placeholder--3 {
  background-color: #b8c4c8;
}
.gallery-placeholder--4 {
  background-color: #c4bfb8;
}
.gallery-placeholder--5 {
  background-color: #d1c0bb;
}
.gallery-placeholder--6 {
  background-color: #bdbdb8;
}

.gallery-tag {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-light);
  margin-top: 0.5rem;
  text-transform: uppercase;
}

.gallery-more {
  text-align: center;
}

/* ============================================================
   9. VOICE
   ============================================================ */
.voice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.voice-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  padding: 2rem;
  position: relative;
}

.voice-card::before {
  content: '"';
  font-family: var(--font-serif-en);
  font-size: 6rem;
  font-weight: 300;
  color: var(--color-pink-pale);
  position: absolute;
  top: -0.5rem;
  left: 1.2rem;
  line-height: 1;
  pointer-events: none;
}

.voice-stars {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--color-pink);
  margin-bottom: 0.75rem;
}

.voice-title {
  font-family: var(--font-serif-ja);
  font-size: var(--text-md);
  font-weight: 500;
  line-height: var(--leading-normal);
  margin-bottom: 0.75rem;
  letter-spacing: 0.03em;
}

.voice-body {
  font-size: var(--text-sm);
  font-weight: 300;
  color: var(--color-text-sub);
  line-height: var(--leading-loose);
  margin-bottom: 1.25rem;
}

.voice-meta {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-text-light);
  letter-spacing: 0.06em;
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
}

/* ============================================================
   10. FLOW
   ============================================================ */
.flow-steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}

.flow-step {
  flex: 1;
  min-width: 160px;
  text-align: center;
  padding: 2rem 1.5rem;
}

.flow-step__num {
  font-family: var(--font-serif-en);
  font-size: 0.8rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--color-pink);
  display: block;
  margin-bottom: 0.75rem;
}

.flow-step__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 1rem;
  color: var(--color-text-sub);
}

.flow-step__icon svg {
  width: 100%;
  height: 100%;
}

.flow-step__title {
  font-family: var(--font-serif-ja);
  font-size: var(--text-base);
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.flow-step__desc {
  font-size: var(--text-xs);
  font-weight: 300;
  color: var(--color-text-sub);
  line-height: var(--leading-normal);
}

.flow-arrow {
  align-self: center;
  font-family: var(--font-sans);
  font-size: 1.2rem;
  color: var(--color-border);
  padding: 0 0.25rem;
  flex-shrink: 0;
}

/* ============================================================
   11. ACCESS
   ============================================================ */
.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.access-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 2rem;
}

.access-table tr {
  border-bottom: 1px solid var(--color-border);
}

.access-table th,
.access-table td {
  padding: 1rem 0;
  vertical-align: top;
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  text-align: left;
}

.access-table th {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-text-light);
  min-width: 100px;
  padding-right: 1.5rem;
}

.access-table td {
  font-weight: 300;
  color: var(--color-text);
}

.access-table td small {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-sub);
  margin-top: 0.25rem;
}

.access-sns {
  display: flex;
  gap: 1rem;
}

/* ▼ Googleマップ埋め込みに差し替えてください */
.access-map__iframe {
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 0;
  display: block;
}

/* ============================================================
   12. CONTACT
   ============================================================ */
.contact-wrap {
  max-width: 720px;
  margin: 0 auto;
}

.contact-lead {
  font-family: var(--font-serif-ja);
  font-size: var(--text-md);
  font-weight: 300;
  line-height: var(--leading-loose);
  text-align: center;
  margin-bottom: 3rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

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

.form-label {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-sub);
}

.form-required {
  color: var(--color-pink);
  margin-left: 0.25rem;
}

.form-input {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-border);
  padding: 0.75rem 0;
  font-family: var(--font-serif-ja);
  font-size: var(--text-base);
  font-weight: 300;
  color: var(--color-text);
  width: 100%;
  outline: none;
  transition: border-color 0.3s ease;
  appearance: none;
  border-radius: 0;
}

.form-input:focus {
  border-color: var(--color-text);
}

.form-input::placeholder {
  color: var(--color-text-light);
  font-weight: 300;
}

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23A0A0A0' stroke-width='1.2' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  padding-right: 2rem;
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: var(--leading-loose);
}

.btn-submit {
  align-self: center;
  margin-top: 1rem;
  font-size: var(--text-sm);
  padding: 1.1rem 3rem;
}

.form-note {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-text-light);
  text-align: center;
  line-height: var(--leading-normal);
  letter-spacing: 0.04em;
}

.form-success {
  display: none;
  text-align: center;
  padding: 3rem;
  border: 1px solid var(--color-border);
}

.form-success p {
  font-family: var(--font-serif-ja);
  font-size: var(--text-md);
  font-weight: 300;
  line-height: var(--leading-loose);
  color: var(--color-text-sub);
}

.form-success.visible {
  display: block;
}

/* ============================================================
   13. FOOTER
   ============================================================ */
#site-footer {
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 3rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  gap: 2rem 4rem;
  align-items: start;
}

.footer-logo {
  font-family: var(--font-serif-en);
  font-size: 1.65rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  margin-bottom: 0.5rem;
}

.footer-tagline {
  font-family: var(--font-serif-ja);
  font-size: var(--text-sm);
  font-weight: 300;
  color: var(--color-text-sub);
  letter-spacing: 0.06em;
}

.footer-nav {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  padding-top: 0.25rem;
}

.footer-nav a {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-sub);
  position: relative;
  padding-bottom: 2px;
  transition: color 0.3s;
}

.footer-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-text);
  transition: width 0.3s ease;
}

.footer-nav a:hover {
  color: var(--color-text);
}
.footer-nav a:hover::after {
  width: 100%;
}

.footer-demo-note {
  grid-column: 1 / -1;
  text-align: center;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  color: var(--color-text-light);
  padding: 0.75rem 1rem;
  border: 1px dashed var(--color-border);
  margin-bottom: 1.5rem;
}

.footer-bottom {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.copyright {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-text-light);
  letter-spacing: 0.06em;
}

.social-links {
  display: flex;
  gap: 1.5rem;
}

.social-links a {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-sub);
}

/* ============================================================
   14. ANIMATIONS
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .fade-load,
  .fade-in,
  .fade-in.is-visible,
  .fade-load {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ============================================================
   15. RESPONSIVE
   ============================================================ */

/* Tablet */
@media (max-width: 1024px) {
  .concept-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .flow-steps {
    flex-wrap: wrap;
  }

  .flow-arrow {
    display: none;
  }

  .flow-step {
    flex: 1;
    min-width: 140px;
  }
}

/* Mobile */
@media (max-width: 767px) {
  :root {
    --space-xl: 5rem;
    --space-lg: 3rem;
  }

  /* Header */
  .site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
    z-index: 90;
  }

  .site-nav.open {
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    font-size: 1rem;
    letter-spacing: 0.2em;
  }

  .nav-cta {
    font-size: var(--text-sm);
    padding: 0.75rem 2rem;
  }

  .hamburger {
    display: flex;
    position: relative;
    z-index: 95;
  }

  /* Hero */

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding-bottom: 4rem;
  }

  .hero-visual {
    display: flex;
    width: 100%;
  }

  .hero-img {
    aspect-ratio: 4 / 3;
  }

  .hero-title {
    font-size: clamp(2.5rem, 14vw, 3.5rem);
  }

  .hero-bg-text {
    font-size: clamp(5rem, 25vw, 10rem);
  }

  /* Concept */
  .concept-grid {
    gap: 2.5rem;
  }

  /* Menu */
  .menu-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  /* Gallery */
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }

  /* Voice */
  .voice-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  /* Flow */
  .flow-steps {
    flex-direction: column;
  }

  .flow-step {
    display: grid;
    grid-template-columns: 2.5rem 2rem 1fr;
    grid-template-rows: auto auto;
    column-gap: 0.6rem;
    row-gap: 0.75rem;
    align-items: center;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--color-border);
    min-width: unset;
    flex: none;
    text-align: left;
  }

  .flow-step__num {
    grid-column: 1;
    grid-row: 1;
    margin-bottom: 0;
    align-self: center;
  }

  .flow-step__icon {
    grid-column: 2;
    grid-row: 1;
    width: 28px;
    height: 28px;
    min-width: unset;
    margin: 0;
  }

  .flow-step__title {
    grid-column: 3;
    grid-row: 1;
    margin-bottom: 0;
  }

  .flow-step__desc {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  /* Access */
  .access-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .access-sns {
    justify-content: space-around;
  }

  .access-sns .btn-outline {
    flex: 1;
    justify-content: center;
  }

  /* Footer */
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-nav {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  /* Fixed CTA */
  .fixed-cta {
    bottom: 1rem;
    right: 1rem;
    left: 1rem;
    text-align: center;
    border-radius: 9999px;
  }
}