/* Hamanako Unagi — design tokens */
:root {
  --color-bg: #f7f2eb;
  --color-bg-alt: #efe6d8;
  --color-surface: #fffdf9;
  --color-ink: #1c1410;
  --color-ink-muted: #5c4a3a;
  --color-accent: #8b3a1a;
  --color-accent-light: #c45c2e;
  --color-gold: #c9a227;
  --color-lake: #4a6b7a;
  --color-lake-light: #7a9dad;
  --font-sans: "Noto Sans JP", system-ui, sans-serif;
  --font-serif: "Noto Serif JP", "Hiragino Mincho ProN", serif;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 8px 32px rgba(28, 20, 16, 0.08);
  --shadow-lg: 0 20px 48px rgba(28, 20, 16, 0.12);
  --header-h: 72px;
  --max-width: 1100px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-ink);
  background: var(--color-bg);
}

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

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--color-accent-light);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 200;
  padding: 0.75rem 1.25rem;
  background: var(--color-ink);
  color: var(--color-surface);
  border-radius: var(--radius);
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 253, 249, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(28, 20, 16, 0.06);
  transition: box-shadow 0.3s var(--ease);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 700;
}

.logo-mark {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--color-surface);
  background: linear-gradient(135deg, var(--color-accent), #5c2810);
  border-radius: 8px;
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}

.site-nav ul {
  display: flex;
  gap: 1.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-ink-muted);
  text-decoration: none;
  transition: color 0.2s;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  margin: 0 auto;
  background: var(--color-ink);
  border-radius: 1px;
  transition: transform 0.3s var(--ease), opacity 0.3s;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  align-items: center;
  padding: calc(var(--header-h) + 3rem) 1.5rem 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(201, 162, 39, 0.15), transparent),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(74, 107, 122, 0.12), transparent),
    linear-gradient(165deg, #faf6ef 0%, var(--color-bg-alt) 55%, #e8ddd0 100%);
  z-index: 0;
}

.hero-bg::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--color-bg), transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

.hero-eyebrow {
  margin: 0 0 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--color-lake);
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 1.25rem;
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 6vw, 3.5rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.02em;
}

.hero-lead {
  max-width: 36em;
  margin: 0 0 2rem;
  font-size: 1.1rem;
  color: var(--color-ink-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 999px;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: var(--color-surface);
  background: linear-gradient(135deg, var(--color-accent), #6b2e14);
  box-shadow: 0 4px 20px rgba(139, 58, 26, 0.35);
}

.btn-primary:hover {
  color: var(--color-surface);
  box-shadow: 0 8px 28px rgba(139, 58, 26, 0.4);
}

.btn-ghost {
  color: var(--color-ink);
  background: var(--color-surface);
  border: 1px solid rgba(28, 20, 16, 0.12);
}

.btn-ghost:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.hero-visual {
  position: absolute;
  right: 5%;
  bottom: 18%;
  z-index: 1;
  width: min(40vw, 320px);
  opacity: 0.85;
  pointer-events: none;
}

.eel-illustration {
  width: 100%;
  filter: drop-shadow(0 12px 24px rgba(28, 20, 16, 0.2));
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* Stats */
.stats {
  position: relative;
  z-index: 2;
  margin-top: -2rem;
  padding: 0 1.5rem 3rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.stats-grid li {
  padding: 1.5rem;
  text-align: center;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.stat-value {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-accent);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-ink-muted);
}

/* Sections */
.section {
  padding: 5rem 1.5rem;
}

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

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-header {
  margin-bottom: 2.5rem;
}

.section-tag {
  display: inline-block;
  margin-bottom: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.section h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
}

.section-intro {
  margin: 1rem 0 0;
  max-width: 40em;
  color: var(--color-ink-muted);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.split-text p {
  margin: 0 0 1.25rem;
  color: var(--color-ink-muted);
}

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

.map-card {
  margin: 0;
  padding: 0;
}

.map-visual {
  position: relative;
  aspect-ratio: 4 / 3;
  background: linear-gradient(180deg, var(--color-lake-light) 0%, var(--color-lake) 100%);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.map-visual::before {
  content: "";
  position: absolute;
  inset: 20% 15% 25%;
  background: rgba(255, 253, 249, 0.25);
  border-radius: 40% 60% 50% 45%;
}

.map-lake,
.map-city,
.map-sea {
  position: absolute;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-surface);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

.map-lake {
  top: 42%;
  left: 38%;
}

.map-city {
  bottom: 18%;
  left: 28%;
}

.map-sea {
  top: 15%;
  right: 12%;
}

.map-card figcaption {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--color-ink-muted);
  text-align: center;
}

/* Timeline */
.timeline {
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: 2px solid rgba(139, 58, 26, 0.2);
  margin-left: 0.5rem;
}

.timeline-item {
  position: relative;
  padding: 0 0 2.5rem 2rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -0.55rem;
  top: 0.35rem;
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border: 3px solid var(--color-bg-alt);
  border-radius: 50%;
}

.timeline-item time {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-gold);
}

.timeline-item h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.2rem;
}

.timeline-item p {
  margin: 0;
  color: var(--color-ink-muted);
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.card {
  padding: 2rem;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-icon {
  display: block;
  margin-bottom: 1rem;
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: rgba(139, 58, 26, 0.2);
  line-height: 1;
}

.card h3 {
  margin: 0 0 0.75rem;
  font-family: var(--font-serif);
  font-size: 1.15rem;
}

.card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-ink-muted);
}

/* Cuisine */
.cuisine-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.cuisine-item {
  padding: 1.5rem;
  background: var(--color-surface);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent);
}

.cuisine-item h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.1rem;
}

.cuisine-item p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-ink-muted);
}

.tip-box {
  padding: 1.75rem 2rem;
  background: linear-gradient(135deg, rgba(139, 58, 26, 0.08), rgba(201, 162, 39, 0.1));
  border-radius: var(--radius-lg);
  border: 1px solid rgba(139, 58, 26, 0.12);
}

.tip-box h3 {
  margin: 0 0 1rem;
  font-family: var(--font-serif);
  font-size: 1.1rem;
}

.tip-box ul {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--color-ink-muted);
}

.tip-box li {
  margin-bottom: 0.35rem;
}

.tip-box li:last-child {
  margin-bottom: 0;
}

/* Visit */
.visit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.visit-block h3 {
  margin: 0 0 0.75rem;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--color-accent);
}

.visit-block p {
  margin: 0;
  color: var(--color-ink-muted);
}

/* CTA */
.cta {
  padding: 5rem 1.5rem;
  text-align: center;
  background: linear-gradient(135deg, #3d2314 0%, var(--color-accent) 50%, #6b2e14 100%);
  color: var(--color-surface);
}

.cta h2 {
  margin: 0 0 1rem;
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
}

.cta p {
  max-width: 32em;
  margin: 0 auto;
  opacity: 0.92;
  line-height: 1.8;
}

/* Footer */
.site-footer {
  padding: 2.5rem 1.5rem;
  text-align: center;
  background: var(--color-ink);
  color: rgba(255, 253, 249, 0.75);
}

.footer-brand {
  margin: 0 0 0.5rem;
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--color-surface);
}

.footer-note {
  margin: 0 0 1rem;
  font-size: 0.8rem;
  max-width: 36em;
  margin-left: auto;
  margin-right: auto;
}

.footer-copy {
  margin: 0;
  opacity: 0.5;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    padding: 1.5rem;
    background: var(--color-surface);
    border-bottom: 1px solid rgba(28, 20, 16, 0.08);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s var(--ease), opacity 0.3s, visibility 0.3s;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 1rem;
  }

  .hero-visual {
    right: 50%;
    transform: translateX(50%);
    bottom: 8%;
    width: 70%;
    opacity: 0.5;
  }

  .split {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

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

  .eel-illustration {
    animation: none;
  }

  .btn:hover,
  .card:hover {
    transform: none;
  }
}