/* ============================================
   CSS Variables & Base Styles
   ============================================ */
:root {
  /* Colors */
  --color-primary: #2a2f4a;
  --color-secondary: #faf8f5;
  --color-accent: #c4a484;
  --color-jp-seal: #b44d3d;
  --color-text: #1a1a1a;
  --color-text-light: #666666;
  --color-line: #d9d7d4;
  --color-white: #ffffff;
  --color-overlay: rgba(26, 26, 26, 0.4);

  /* Typography */
  --font-display: 'Cormorant Garamond', serif;
  --font-body: 'DM Sans', sans-serif;

  /* Spacing */
  --spacing-section: 120px;
  --spacing-section-mobile: 80px;
  --spacing-element: 32px;
  --spacing-element-mobile: 24px;

  /* Animation */
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-medium: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.2s ease;

  /* Layout */
  --container-max: 1440px;
  --container-padding: 40px;
  --container-padding-mobile: 20px;
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--color-secondary);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 2000;
  padding: 10px 14px;
  background: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
  border-radius: 4px;
}

.skip-link:focus {
  top: 16px;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Grain Overlay */
.grain-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* ============================================
   Typography
   ============================================ */
.sans-body {
  font-family: var(--font-body);
  font-weight: 400;
  letter-spacing: 0.01em;
}

.serif-display {
  font-family: var(--font-display);
  font-weight: 400;
}

.brand-mark {
  --brand-kanji-size: 0.34em;
  --brand-seal-size: 0.15em;
  --brand-accent-top: -0.48em;
  --brand-accent-right: 0.03em;
  --brand-seal-gap: 0.84em;
  display: inline-flex;
  align-items: flex-end;
  line-height: 1;
  position: relative;
  padding-right: 0.68em;
}

.brand-latin {
  display: inline-block;
  line-height: 1;
}

.brand-kanji {
  position: absolute;
  top: var(--brand-accent-top);
  right: var(--brand-accent-right);
  font-size: var(--brand-kanji-size);
  line-height: 1;
  color: currentColor;
  opacity: 0.86;
  letter-spacing: 0;
}

.brand-seal {
  position: absolute;
  top: calc(var(--brand-accent-top) + var(--brand-seal-gap));
  right: calc(var(--brand-accent-right) + 0.01em);
  width: var(--brand-seal-size);
  height: var(--brand-seal-size);
  border-radius: 1px;
  background: var(--color-jp-seal);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.2);
}

/* ============================================
   Navigation
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: transparent;
  transition: background var(--transition-medium);
}

.nav.scrolled {
  background: rgba(250, 248, 245, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--color-line);
}

.nav.scrolled .nav-toggle span {
  background: var(--color-text);
}

.nav.scrolled .nav-link {
  color: var(--color-text);
}

.nav.scrolled .nav-logo {
  color: var(--color-primary);
}

.nav.scrolled .nav-link:hover {
  color: var(--color-primary);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px var(--container-padding);
  max-width: var(--container-max);
  margin: 0 auto;
}

.nav-logo {
  font-size: 1.75rem;
  color: var(--color-white);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-logo .brand-mark {
  --brand-kanji-size: 0.39em;
  --brand-seal-size: 0.17em;
  --brand-accent-top: -0.56em;
  --brand-seal-gap: 0.9em;
  padding-right: 0.66em;
}

.nav-logo::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition-medium);
}

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

.nav-logo:focus-visible::after {
  width: 100%;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--color-white);
  text-decoration: none;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  position: relative;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition-medium);
}

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

.nav-link:hover {
  color: var(--color-accent);
}

.nav-link:focus-visible::before {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  align-items: center;
  justify-content: center;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: all var(--transition-medium);
}

/* Mobile Navigation */
.nav-links.mobile-active {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background: var(--color-secondary);
  padding: 24px var(--container-padding);
  gap: 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  z-index: 999;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 120%;
  z-index: 1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-overlay);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: var(--color-white);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s ease, transform 1s ease;
}

.hero-content.visible {
  opacity: 1;
  transform: translateY(0);
}

.hero-title {
  font-size: clamp(4rem, 10vw, 7rem);
  font-weight: 400;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.hero-title .brand-mark {
  --brand-kanji-size: 0.24em;
  --brand-seal-size: 0.1em;
  --brand-accent-top: -0.34em;
  --brand-seal-gap: 0.78em;
  padding-right: 0.56em;
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: 1rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  opacity: 0.9;
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  opacity: 0;
  animation: fadeInUp 1s ease 1s forwards;
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--color-white), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% {
    transform: scaleY(1);
    opacity: 0.5;
  }
  50% {
    transform: scaleY(1.5);
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   Story Section
   ============================================ */
.story {
  padding: var(--spacing-section) var(--container-padding);
  max-width: var(--container-max);
  margin: 0 auto;
  position: relative;
}

.story-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.story-visual {
  position: relative;
}

.story-image-container {
  position: relative;
  padding: 24px;
}

.story-image {
  width: 100%;
  height: auto;
  display: block;
  filter: grayscale(30%);
  transition: filter var(--transition-medium);
}

.story-image:hover {
  filter: grayscale(0%);
}

.story-frame {
  position: absolute;
  background: var(--color-primary);
}

.elegant-divider-left {
  left: 0;
  top: 0;
  width: 1px;
  height: calc(100% + 24px);
}

.elegant-divider-bottom {
  bottom: 0;
  left: 0;
  height: 1px;
  width: calc(100% + 24px);
}

.story-label {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.story-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 400;
  color: var(--color-primary);
  margin-bottom: 32px;
  line-height: 1.1;
}

.story-text {
  color: var(--color-text-light);
  line-height: 1.8;
}

.story-text p {
  margin-bottom: 24px;
}

.story-text p:last-child {
  margin-bottom: 0;
}

.elegant-divider {
  width: 100%;
  height: 1px;
  background: var(--color-line);
  margin: var(--spacing-section) 0;
}

/* ============================================
   Concept Section
   ============================================ */
.concept {
  padding: 0 var(--container-padding) var(--spacing-section);
  max-width: var(--container-max);
  margin: 0 auto;
}

.concept-shell {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border: 1px solid rgba(196, 164, 132, 0.32);
  padding: clamp(28px, 4vw, 56px);
  background:
    radial-gradient(130% 130% at 0% 0%, rgba(196, 164, 132, 0.16), rgba(196, 164, 132, 0) 55%),
    radial-gradient(120% 120% at 100% 100%, rgba(102, 22, 18, 0.2), rgba(102, 22, 18, 0) 60%),
    linear-gradient(140deg, #111419 0%, #1e252d 36%, #241816 60%, #2c1f1a 100%);
  box-shadow: 0 32px 64px rgba(12, 16, 21, 0.35);
}

.concept-shell::before,
.concept-shell::after {
  content: '';
  position: relative;
  pointer-events: none;
}

.concept-shell::before {
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(250, 248, 245, 0.16);
}

.concept-shell::after {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 0.8px, transparent 0.8px);
  background-size: 3px 3px;
  opacity: 0.12;
}

.concept-header {
  position: relative;
  z-index: 1;
  max-width: 840px;
  margin: 0 auto 36px;
  text-align: center;
}

.concept-label {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.concept-title {
  font-size: clamp(2rem, 4.5vw, 3.6rem);
  font-weight: 400;
  color: var(--color-white);
  line-height: 1.04;
  margin-bottom: 20px;
  text-wrap: balance;
}

.concept-intro {
  color: rgba(250, 248, 245, 0.82);
  line-height: 1.82;
  max-width: 74ch;
  margin: 0 auto;
}

.concept-theater {
  position: relative;
  z-index: 1;
  width: 100%;
  margin-top: 14px;
}

.concept-visual-stage {
  position: relative;
  width: 100%;
}

.concept-stage-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(250, 248, 245, 0.25);
  aspect-ratio: 16/10;
  background: #0f1218;
  box-shadow: 0 20px 42px rgba(0, 0, 0, 0.35);
}

.concept-stage-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.06);
  transition: opacity 420ms ease, transform 800ms cubic-bezier(0.22, 1, 0.36, 1);
}

.concept-stage-image.is-active {
  opacity: 1;
  transform: scale(1);
}

.concept-stage-vignette {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 14, 18, 0.8), rgba(11, 14, 18, 0.1) 50%, rgba(11, 14, 18, 0.25));
  pointer-events: none;
}

.concept-hotspot {
  position: absolute;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: none;
  background: none;
  cursor: pointer;
  padding: 0;
  color: var(--color-white);
}

.concept-hotspot::before {
  content: '';
  position: absolute;
  left: -9px;
  top: -9px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(250, 248, 245, 0.48);
  opacity: 0.55;
  transform: scale(1);
  animation: conceptPulse 2.8s ease-out infinite;
}

.concept-hotspot-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-white);
  box-shadow: 0 0 0 4px rgba(250, 248, 245, 0.2);
  flex: 0 0 auto;
}

.concept-hotspot-label {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 8px 11px;
  background: rgba(12, 16, 21, 0.62);
  border: 1px solid rgba(250, 248, 245, 0.18);
  white-space: nowrap;
}

.concept-hotspot.is-active::before {
  border-color: rgba(196, 164, 132, 0.8);
  opacity: 0.95;
}

.concept-hotspot.is-active .concept-hotspot-dot {
  background: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(196, 164, 132, 0.3);
}

.concept-hotspot.is-active .concept-hotspot-label {
  border-color: rgba(196, 164, 132, 0.55);
  background: rgba(24, 17, 16, 0.78);
}

.concept-hotspot:focus-visible {
  outline: none;
}

.concept-hotspot:focus-visible::before {
  border-color: rgba(196, 164, 132, 0.95);
  opacity: 1;
}

.concept-hotspot:focus-visible .concept-hotspot-label {
  outline: 2px solid rgba(196, 164, 132, 0.95);
  outline-offset: 2px;
  border-color: rgba(196, 164, 132, 0.9);
  background: rgba(24, 17, 16, 0.9);
}

.concept-hotspot--touch {
  left: 12%;
  top: 67%;
}

.concept-hotspot--dialogue {
  right: 14%;
  top: 28%;
}

.concept-hotspot--tempo {
  left: 56%;
  bottom: 16%;
}

.concept-detail-overlay {
  --overlay-x: 24px;
  --overlay-y: 24px;
  position: absolute;
  left: var(--overlay-x);
  top: var(--overlay-y);
  z-index: 4;
  width: min(360px, calc(100% - 32px));
  border: 1px solid rgba(250, 248, 245, 0.28);
  background: linear-gradient(160deg, rgba(8, 11, 16, 0.9), rgba(17, 22, 30, 0.88));
  backdrop-filter: blur(7px);
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.38);
  padding: 18px 20px 16px;
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: none;
  transition: left 280ms cubic-bezier(0.22, 1, 0.36, 1), top 280ms cubic-bezier(0.22, 1, 0.36, 1), opacity 200ms ease, transform 280ms cubic-bezier(0.22, 1, 0.36, 1);
}

.concept-detail-overlay.is-hidden-preinteraction {
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
}

.concept-detail-overlay.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.concept-detail-overlay.is-locked {
  border-color: rgba(196, 164, 132, 0.78);
}

.concept-detail-kicker {
  font-size: 0.62rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: rgba(250, 248, 245, 0.72);
  margin-bottom: 10px;
}

.concept-detail-title {
  font-size: clamp(1.4rem, 2.1vw, 2rem);
  line-height: 1.12;
  color: var(--color-white);
  margin-bottom: 11px;
  font-weight: 400;
}

.concept-detail-summary {
  color: rgba(250, 248, 245, 0.86);
  line-height: 1.55;
  margin-bottom: 13px;
}

.concept-detail-hint {
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(196, 164, 132, 0.9);
}

.concept-detail-hint-mobile {
  display: none;
}

.concept-mobile-detail {
  display: none;
}

.concept-scene-panels {
  position: relative;
}

.concept-scene-panel {
  display: none;
}

.concept-scene-panel.is-active {
  display: block;
  animation: conceptSceneIn 280ms cubic-bezier(0.19, 1, 0.22, 1);
}

.concept-scene-panel h3 {
  font-size: clamp(1.45rem, 2.4vw, 2.15rem);
  color: var(--color-primary);
  font-weight: 400;
  line-height: 1.15;
  margin-bottom: 14px;
}

.concept-scene-panel p {
  color: #332e2b;
  line-height: 1.8;
  margin-bottom: 20px;
}

.concept-points {
  list-style: none;
  display: grid;
  gap: 10px;
}

.concept-points li {
  position: relative;
  padding-left: 20px;
  color: #5a524d;
  line-height: 1.68;
}

.concept-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(196, 164, 132, 0.2);
}

@keyframes conceptPulse {
  0% {
    opacity: 0.8;
    transform: scale(0.8);
  }
  70% {
    opacity: 0;
    transform: scale(1.4);
  }
  100% {
    opacity: 0;
    transform: scale(1.45);
  }
}

@keyframes conceptSceneIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   Chef Section
   ============================================ */
.chef {
  position: relative;
  height: 70vh;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin: var(--spacing-section) 0;
}

.chef-bg {
  position: absolute;
  top: -10%;
  left: 0;
  width: 100%;
  height: 120%;
  z-index: 1;
}

.chef-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
}

.chef-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(42, 47, 74, 0.7), rgba(42, 47, 74, 0.5));
  z-index: 2;
}

.chef-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: var(--color-white);
  max-width: 800px;
  padding: 40px;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s ease, transform 1s ease;
}

.chef-content.visible {
  opacity: 1;
  transform: translateY(0);
}

.chef-name {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 400;
  margin-bottom: 8px;
}

.chef-label {
  font-size: 0.875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 40px;
  opacity: 0.8;
}

.chef-quote {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-style: italic;
  line-height: 1.4;
  position: relative;
  padding: 0 40px;
}

.chef-quote::before {
  content: '"';
  position: absolute;
  left: 0;
  top: -20px;
  font-size: 4rem;
  line-height: 1;
  opacity: 0.3;
  font-family: var(--font-display);
}

.chef-quote::after {
  content: '"';
  position: absolute;
  right: 0;
  bottom: -40px;
  font-size: 4rem;
  line-height: 1;
  opacity: 0.3;
  font-family: var(--font-display);
}

/* ============================================
   Menu Section
   ============================================ */
.menu {
  padding: var(--spacing-section) var(--container-padding);
  max-width: var(--container-max);
  margin: 0 auto;
}

.menu-header {
  text-align: center;
  margin-bottom: 64px;
}

.menu-label {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.menu-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 400;
  color: var(--color-primary);
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-template-rows: repeat(3, 220px);
  grid-template-areas:
    "course-1 course-1 course-2"
    "course-1 course-1 course-3"
    "course-4 course-5 course-5";
  gap: 24px;
  margin-bottom: 64px;
}

.menu-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.menu-grid > .menu-item:nth-child(1) { grid-area: course-1; }
.menu-grid > .menu-item:nth-child(2) { grid-area: course-2; }
.menu-grid > .menu-item:nth-child(3) { grid-area: course-3; }
.menu-grid > .menu-item:nth-child(4) { grid-area: course-4; }
.menu-grid > .menu-item:nth-child(5) { grid-area: course-5; }

.menu-image {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  filter: grayscale(50%);
  transition: all var(--transition-medium);
}

.menu-item:hover .menu-image {
  transform: scale(1.05);
  filter: grayscale(0%);
}

.menu-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px;
  background: linear-gradient(to top, rgba(26, 26, 26, 0.8), transparent);
  color: var(--color-white);
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-medium);
}

.menu-item:hover .menu-caption {
  opacity: 1;
  transform: translateY(0);
}

.menu-course-name {
  font-size: 1.75rem;
  display: block;
  margin-bottom: 4px;
}

.menu-course-desc {
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  opacity: 0.9;
}

.menu-note {
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.875rem;
  max-width: 600px;
  margin: 0 auto;
  padding: 0 20px;
}

.elegant-divider-center {
  width: 100%;
  max-width: 200px;
  margin: var(--spacing-section) auto 0;
}

/* ============================================
   Reservation Section
   ============================================ */
.reservation {
  padding: var(--spacing-section) var(--container-padding);
  max-width: var(--container-max);
  margin: 0 auto;
}

.reservation-inner {
  text-align: center;
}

.reservation-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 400;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.reservation-desc {
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto 48px;
  line-height: 1.8;
}

.reservation-btn {
  display: inline-block;
  padding: 20px 48px;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.reservation-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: var(--color-primary);
  transition: width var(--transition-medium);
  z-index: -1;
}

.reservation-btn:hover::before {
  width: 100%;
}

.reservation-btn:hover {
  color: var(--color-white);
  box-shadow: 0 0 20px rgba(42, 47, 74, 0.2);
}

.reservation-btn:focus-visible::before {
  width: 100%;
}

.reservation-btn:focus-visible {
  color: var(--color-white);
  box-shadow: 0 0 20px rgba(42, 47, 74, 0.2);
}

.reservation-btn span {
  position: relative;
  z-index: 1;
}

.reservation-info {
  display: flex;
  justify-content: center;
  gap: 80px;
  margin-top: 64px;
}

.reservation-info-item {
  text-align: center;
}

.info-label {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.info-value {
  font-size: 1.25rem;
  color: var(--color-primary);
}

/* Reservation Map */
.reservation-map {
  position: relative;
  margin-top: 64px;
  padding: 24px;
  background: var(--color-white);
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.map-frame {
  position: relative;
  width: 100%;
  height: 350px;
  overflow: hidden;
  filter: grayscale(100%);
  transition: filter var(--transition-medium);
}

.map-frame:hover {
  filter: grayscale(0%);
}

.map-frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border: 1px solid var(--color-line);
  z-index: 2;
  pointer-events: none;
}

.map-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
  filter: invert(90%) hue-rotate(180deg);
  transition: filter var(--transition-medium);
}

.map-frame:hover iframe {
  filter: none;
}

.map-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
  color: var(--color-text-light);
  font-size: 0.875rem;
  letter-spacing: 0.1em;
}

.map-label-icon {
  font-size: 1.25rem;
  color: var(--color-accent);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-section) var(--container-padding) 24px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-max);
  margin: 0 auto;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-logo {
  font-size: 2rem;
  font-weight: 400;
}

.footer-logo .brand-mark {
  --brand-kanji-size: 0.34em;
  --brand-seal-size: 0.14em;
  --brand-accent-top: -0.5em;
  --brand-seal-gap: 0.84em;
  padding-right: 0.62em;
}

.footer-tagline {
  font-size: 0.875rem;
  opacity: 0.7;
  letter-spacing: 0.05em;
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-link {
  color: var(--color-white);
  text-decoration: none;
  font-size: 0.875rem;
  opacity: 0.8;
  transition: all var(--transition-fast);
  position: relative;
}

.footer-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition-medium);
}

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

.footer-link:hover {
  opacity: 1;
}

.footer-link:focus-visible::after {
  width: 100%;
}

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  margin-top: 48px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.75rem;
  opacity: 0.5;
  max-width: var(--container-max);
  margin: 48px auto 0;
}

/* ============================================
   Scroll Animations
   ============================================ */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for menu items */
.menu-item:nth-child(1) {
  transition-delay: 0.1s;
}

.menu-item:nth-child(2) {
  transition-delay: 0.2s;
}

.menu-item:nth-child(3) {
  transition-delay: 0.3s;
}

.menu-item:nth-child(4) {
  transition-delay: 0.4s;
}

.menu-item:nth-child(5) {
  transition-delay: 0.5s;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links.mobile-active .nav-link {
    color: var(--color-text);
  }

  .nav-links.mobile-active .nav-link:hover,
  .nav-links.mobile-active .nav-link:focus-visible {
    color: var(--color-primary);
  }
}

@media (max-width: 1024px) {
  .concept-shell {
    padding: 40px 30px;
  }

  .concept-theater {
    margin-top: 10px;
  }

  .concept-stage-frame {
    aspect-ratio: 16/9;
  }

  .concept-hotspot-label {
    font-size: 0.62rem;
    padding: 7px 9px;
  }

  .concept-detail-overlay {
    left: 16px;
    right: 16px;
    top: auto;
    bottom: 16px;
    width: auto;
    max-width: none;
    padding: 14px 16px 13px;
    transition: opacity 200ms ease, transform 280ms cubic-bezier(0.22, 1, 0.36, 1);
  }

  .concept-detail-title {
    font-size: 1.5rem;
  }

  .concept-detail-summary {
    margin-bottom: 10px;
    line-height: 1.48;
  }

  .concept-detail-hint-desktop {
    display: none;
  }

  .concept-detail-hint-mobile {
    display: inline;
  }

  .menu-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: repeat(4, 180px);
    grid-template-areas:
      "course-1 course-1"
      "course-1 course-1"
      "course-2 course-3"
      "course-4 course-5";
  }

  .reservation-info {
    flex-direction: column;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-section: var(--spacing-section-mobile);
    --spacing-element: var(--spacing-element-mobile);
  }

  .nav-inner {
    padding: 20px var(--container-padding-mobile);
  }

  .nav-links.mobile-active {
    padding: 24px var(--container-padding-mobile);
  }

  .concept {
    padding: 0 var(--container-padding-mobile) var(--spacing-section);
  }

  .concept-shell {
    padding: 24px 16px;
  }

  .concept-shell::before {
    inset: 8px;
  }

  .concept-header {
    margin-bottom: 24px;
  }

  .concept-intro {
    line-height: 1.72;
  }

  .concept-theater {
    margin-top: 4px;
  }

  .concept-stage-frame {
    aspect-ratio: 4/3;
  }

  .concept-hotspot {
    gap: 7px;
  }

  .concept-hotspot::before {
    width: 30px;
    height: 30px;
    left: -7px;
    top: -7px;
  }

  .concept-hotspot-dot {
    width: 13px;
    height: 13px;
  }

  .concept-hotspot-label {
    font-size: 0.58rem;
    letter-spacing: 0.06em;
    padding: 6px 8px;
    white-space: normal;
    line-height: 1.2;
    max-width: 124px;
    text-align: center;
  }

  .concept-hotspot--touch {
    left: 3%;
    top: 76%;
  }

  .concept-hotspot--dialogue {
    right: 5%;
    top: 18%;
  }

  .concept-hotspot--tempo {
    left: auto;
    right: 4%;
    bottom: 12%;
  }

  .concept-detail-overlay {
    display: none !important;
  }

  .concept-mobile-detail {
    display: block;
    margin-top: 0;
    border: 0 solid rgba(196, 164, 132, 0.38);
    background:
      radial-gradient(130% 180% at 100% 0%, rgba(196, 164, 132, 0.16), rgba(196, 164, 132, 0) 55%),
      linear-gradient(160deg, rgba(8, 11, 16, 0.94), rgba(19, 24, 32, 0.91) 58%, rgba(28, 21, 19, 0.9));
    backdrop-filter: blur(7px);
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.4);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    padding: 0 12px;
    transition: max-height 280ms ease, opacity 180ms ease, transform 280ms cubic-bezier(0.22, 1, 0.36, 1), margin-top 180ms ease, padding 180ms ease, border-width 180ms ease;
  }

  .concept-mobile-detail.is-visible {
    margin-top: 12px;
    border-width: 1px;
    max-height: 240px;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    padding: 11px 12px 10px;
  }

  .concept-mobile-detail.is-hidden-preinteraction {
    margin-top: 0;
    border-width: 0;
    max-height: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    padding-top: 0;
    padding-bottom: 0;
  }

  .concept-detail-title {
    font-size: 1.24rem;
    margin-bottom: 8px;
  }

  .concept-detail-summary {
    font-size: 0.86rem;
    line-height: 1.45;
    margin-bottom: 8px;
  }

  .concept-mobile-detail .concept-detail-title {
    color: rgba(250, 248, 245, 0.96);
  }

  .concept-mobile-detail .concept-detail-summary {
    color: rgba(250, 248, 245, 0.86);
  }

  .story-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .story-image-container {
    padding: 16px;
  }

  .menu-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    grid-template-areas: none;
    gap: 16px;
  }

  .menu-item,
  .menu-grid > .menu-item,
  .menu-item-large,
  .menu-item-medium,
  .menu-item-small {
    grid-area: auto;
    grid-column: span 1;
    grid-row: span 1;
    aspect-ratio: 16/10;
  }

  .menu-grid > .menu-item:nth-child(1),
  .menu-grid > .menu-item:nth-child(2),
  .menu-grid > .menu-item:nth-child(3),
  .menu-grid > .menu-item:nth-child(4),
  .menu-grid > .menu-item:nth-child(5) {
    grid-area: auto;
    grid-column: auto;
    grid-row: auto;
  }

  .menu-caption {
    opacity: 1;
    transform: none;
    padding: 18px 16px 14px;
    background: linear-gradient(
      to top,
      rgba(8, 10, 13, 0.9) 0%,
      rgba(8, 10, 13, 0.64) 48%,
      rgba(8, 10, 13, 0.08) 100%
    );
  }

  .menu-course-name {
    font-size: 1.4rem;
    line-height: 1.08;
    margin-bottom: 6px;
  }

  .menu-course-desc {
    display: block;
    max-width: 30ch;
    font-size: 0.82rem;
    line-height: 1.4;
    letter-spacing: 0.04em;
    color: rgba(255, 255, 255, 0.9);
  }

  .hero-title {
    font-size: 3.5rem;
  }

  .nav-logo .brand-mark {
    --brand-kanji-size: 0.35em;
    --brand-seal-size: 0.15em;
    --brand-accent-top: -0.5em;
    padding-right: 0.6em;
  }

  .hero-title .brand-mark {
    --brand-kanji-size: 0.23em;
    --brand-seal-size: 0.095em;
    --brand-accent-top: -0.31em;
    padding-right: 0.5em;
  }

  .footer-logo .brand-mark {
    --brand-kanji-size: 0.31em;
    --brand-seal-size: 0.13em;
    --brand-accent-top: -0.46em;
    padding-right: 0.56em;
  }

  .chef-quote::before,
  .chef-quote::after {
    display: none;
  }

  .chef-content {
    padding: 24px;
  }

  .reservation-map {
    padding: 16px;
    margin-top: 48px;
  }

  .map-frame {
    height: 280px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    flex-direction: column;
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .menu-caption {
    padding: 14px 12px 12px;
  }

  .menu-course-name {
    font-size: 1.2rem;
  }

  .menu-course-desc {
    font-size: 0.75rem;
  }

  .concept-stage-frame {
    aspect-ratio: 5/4;
  }

  .concept-hotspot-label {
    max-width: 102px;
    line-height: 1.25;
  }

  .concept-hotspot--touch {
    left: 2%;
    top: 78%;
  }

  .concept-hotspot--dialogue {
    right: 4%;
    top: 15%;
  }

  .concept-hotspot--tempo {
    left: auto;
    right: 3%;
    bottom: 8%;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .nav-logo .brand-mark {
    --brand-kanji-size: 0.32em;
    --brand-seal-size: 0.14em;
    --brand-accent-top: -0.46em;
    padding-right: 0.56em;
  }

  .hero-title .brand-mark {
    --brand-kanji-size: 0.22em;
    --brand-seal-size: 0.09em;
    --brand-accent-top: -0.28em;
    padding-right: 0.46em;
  }

  .story-title,
  .menu-title,
  .reservation-title {
    font-size: 2rem;
  }

  .chef-quote {
    font-size: 1.25rem;
    padding: 0;
  }

  .reservation-btn {
    padding: 16px 32px;
    font-size: 0.875rem;
  }

  .map-frame {
    height: 220px;
  }

  .map-label {
    font-size: 0.75rem;
  }

}

@media (hover: none) and (pointer: coarse) {
  .menu-caption {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .hero-content,
  .chef-content,
  .reveal-on-scroll {
    opacity: 1;
    transform: none;
  }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
  .grain-overlay,
  .nav,
  .scroll-indicator {
    display: none;
  }

  body {
    background: var(--color-white);
  }
}