:root {
  --color-bg: #faf9f7;
  --color-bg-secondary: #f0eeeb;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-secondary: #5c5c5c;
  --color-text-muted: #8a8a8a;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-border: rgba(0, 0, 0, 0.08);
  --color-shadow: rgba(0, 0, 0, 0.06);
  --color-grain: 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='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  --grain-opacity: 0.03;

  --font-display: "Zen Maru Gothic", sans-serif;
  --font-mono: "Space Mono", monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 50%;

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0f1219;
    --color-bg-secondary: #181c26;
    --color-surface: #1e2330;
    --color-text: #f0f0f0;
    --color-text-secondary: #a0a0a0;
    --color-text-muted: #6a6a6a;
    --color-accent: #60a5fa;
    --color-accent-hover: #93c5fd;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-shadow: rgba(0, 0, 0, 0.3);
    --grain-opacity: 0.04;
  }
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  color-scheme: light dark;
}

body {
  font-family: var(--font-display);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.grain {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: var(--color-grain);
  opacity: var(--grain-opacity);
  pointer-events: none;
  z-index: 1000;
}

.container {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
  flex: 1;
}

@media (min-width: 640px) {
  .container {
    padding: 4rem 2rem;
  }
}

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

.footer {
  text-align: center;
  padding: 2rem 1.5rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  animation: fadeInUp 0.6s var(--transition-slow) 0.3s backwards;
}

.footer a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.skip-link {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #ffffff;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 500;
  z-index: 9999;
  transition: top var(--transition-fast);
}

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

.restaurant-item a:focus-visible,
.back-link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.page-header {
  margin-bottom: 2.5rem;
  animation: fadeInUp 0.6s var(--transition-slow) backwards;
}

.back-link {
  display: inline-block;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  margin-bottom: 1rem;
  transition: color var(--transition-fast);
}

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

.page-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.page-description {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.area-section {
  margin-bottom: 2.5rem;
  animation: fadeInUp 0.6s var(--transition-slow) 0.1s backwards;
}

.area-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-border);
}

.genre-block {
  margin-bottom: 1.5rem;
}

.genre-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.restaurant-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.restaurant-item a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition:
    transform var(--transition-normal),
    box-shadow var(--transition-normal),
    border-color var(--transition-normal);
}

.restaurant-item a:hover {
  border-color: var(--color-accent);
  transform: translateX(4px);
  box-shadow: 0 4px 16px var(--color-shadow);
}

.restaurant-name {
  font-weight: 500;
}

.restaurant-link-icon {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  transition:
    color var(--transition-fast),
    transform var(--transition-fast);
}

.restaurant-item a:hover .restaurant-link-icon {
  color: var(--color-accent);
  transform: translate(2px, -2px);
}

.restaurant-badge {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  margin-left: auto;
  margin-right: 0.75rem;
  flex-shrink: 0;
}

.restaurant-badge.unvisited {
  background: var(--color-bg-secondary);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}