/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --font-display: 'Special Elite', cursive;
  --font-heading: 'Oswald', sans-serif;
  --font-body: 'Noto Serif JP', serif;

  /* DARK MODE (default) */
  --bg: #0d0c0b;
  --bg2: #141210;
  --bg3: #1c1916;
  --surface: #211e1a;
  --surface2: #2a2520;
  --border: #3a332b;
  --text: #e8dfd0;
  --text2: #a89880;
  --text3: #6b5e4e;
  --accent: #c8a96e;
  --accent2: #8b4a2a;
  --danger: #c0392b;
  --tag-bg: #2a2520;
  --card-bg: #1c1916;
  --card-hover: #241f1a;
  --hero-text: #f0e6d3;
  --tape-bg: #c8a96e;
  --tape-text: #0d0c0b;
  --shadow: rgba(0,0,0,0.6);
  --grain: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.08'/%3E%3C/svg%3E");
}

[data-theme="light"] {
  --bg: #f5f0e8;
  --bg2: #ede7db;
  --bg3: #e4ddd0;
  --surface: #ddd7ca;
  --surface2: #d4cdc0;
  --border: #bbb3a5;
  --text: #2a2218;
  --text2: #5a4e40;
  --text3: #8a7e70;
  --accent: #8b5e2a;
  --accent2: #c0392b;
  --danger: #c0392b;
  --tag-bg: #e4ddd0;
  --card-bg: #ede7db;
  --card-hover: #e4ddd0;
  --hero-text: #2a2218;
  --tape-bg: #8b5e2a;
  --tape-text: #f5f0e8;
  --shadow: rgba(0,0,0,0.15);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background 0.4s ease, color 0.4s ease;
}

/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(13,12,11,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background 0.4s ease;
}

[data-theme="light"] .site-header {
  background: rgba(245,240,232,0.88);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-area {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.logo-coco {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--text2);
  letter-spacing: -0.02em;
}

.logo-hate {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.logo-sub {
  font-size: 0.7rem;
  color: var(--text3);
  letter-spacing: 0.1em;
  margin-left: 0.5rem;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--text2);
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  transition: color 0.2s;
}

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

.theme-toggle {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--accent);
  width: 36px; height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}

.theme-toggle:hover {
  background: var(--accent);
  color: var(--bg);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8rem 2rem 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(139,74,42,0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(200,169,110,0.08) 0%, transparent 50%),
    var(--bg);
}

.grain-overlay {
  position: absolute;
  inset: 0;
  background-image: var(--grain);
  opacity: 0.6;
  pointer-events: none;
}

.hero-lines {
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 80px,
      rgba(200,169,110,0.04) 80px,
      rgba(200,169,110,0.04) 81px
    );
}

.hero-content {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.hero-eyebrow {
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.4em;
  color: var(--accent);
  margin-bottom: 1.5rem;
  animation: fadeUp 0.8s ease both;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--hero-text);
  margin-bottom: 1.5rem;
  animation: fadeUp 0.8s 0.15s ease both;
}

.hero-accent {
  color: var(--accent);
  display: inline-block;
  position: relative;
}

.hero-accent::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 0; right: 0;
  height: 3px;
  background: var(--accent2);
  transform: scaleX(0.8);
  transform-origin: left;
  animation: lineGrow 1s 0.6s ease both;
}

@keyframes lineGrow {
  from { transform: scaleX(0); }
  to { transform: scaleX(0.8); }
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text2);
  margin-bottom: 2.5rem;
  animation: fadeUp 0.8s 0.3s ease both;
}

.hero-cta {
  display: inline-block;
  background: var(--accent);
  color: var(--bg);
  padding: 0.9rem 2.5rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: all 0.2s;
  animation: fadeUp 0.8s 0.45s ease both;
}

.hero-cta:hover {
  background: var(--text);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--shadow);
}

.hero-tape {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: var(--tape-bg);
  color: var(--tape-text);
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  padding: 0.6rem 0;
  white-space: nowrap;
  overflow: hidden;
  animation: scrollTape 20s linear infinite;
}

@keyframes scrollTape {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* repeat tape text via pseudo for seamless scroll */
.hero-tape::after {
  content: attr(data-text);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== STATS BAR ===== */
.stats-bar {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  padding: 1.5rem 2rem;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
}

.stat-num {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text3);
  letter-spacing: 0.1em;
}

.stat-divider {
  color: var(--border);
  font-size: 1.5rem;
}

/* ===== SECTIONS ===== */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-tag {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  color: var(--accent);
  display: block;
  margin-bottom: 0.8rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.8rem;
}

.section-desc {
  color: var(--text2);
  font-size: 0.95rem;
}

/* ===== MAP SECTION ===== */
.map-section {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.map-filters {
  display: flex;
  gap: 0.8rem;
  justify-content: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text2);
  padding: 0.5rem 1.4rem;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

.map-container {
  position: relative;
  border: 1px solid var(--border);
  overflow: hidden;
}

.osm-map {
  width: 100%;
  height: 500px;
  border: none;
  display: block;
  filter: grayscale(0.3) sepia(0.2);
}

[data-theme="light"] .osm-map {
  filter: none;
}

.map-overlay-info {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 0.6rem 1rem;
  font-size: 0.75rem;
}

.map-note { color: var(--text2); }
.map-note-sub { color: var(--text3); }

/* ===== GALLERY ===== */
.gallery-section {
  padding: 6rem 2rem;
  background: var(--bg2);
}

.gallery-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}

.spot-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
}

.spot-card:hover {
  background: var(--card-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px var(--shadow);
  border-color: var(--accent);
}

.card-img-wrap {
  position: relative;
  height: 200px;
}

.card-img-placeholder {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

.img-factory { background: linear-gradient(135deg, #1a1208 0%, #2d200f 100%); }
.img-rail    { background: linear-gradient(135deg, #080e18 0%, #0f1f30 100%); }
.img-hospital{ background: linear-gradient(135deg, #121218 0%, #1f1f2d 100%); }
.img-village { background: linear-gradient(135deg, #101810 0%, #182818 100%); }
.img-mine    { background: linear-gradient(135deg, #181208 0%, #2d200a 100%); }
.img-rail2   { background: linear-gradient(135deg, #0a1010 0%, #142020 100%); }

[data-theme="light"] .img-factory { background: linear-gradient(135deg, #d4c8a8 0%, #c4b090 100%); }
[data-theme="light"] .img-rail    { background: linear-gradient(135deg, #b8c8d8 0%, #a0b8d0 100%); }
[data-theme="light"] .img-hospital{ background: linear-gradient(135deg, #c8c8d0 0%, #b0b0c0 100%); }
[data-theme="light"] .img-village { background: linear-gradient(135deg, #b8d0b8 0%, #a0c0a0 100%); }
[data-theme="light"] .img-mine    { background: linear-gradient(135deg, #d0c0a0 0%, #c0a888 100%); }
[data-theme="light"] .img-rail2   { background: linear-gradient(135deg, #a8c0c0 0%, #90b0b0 100%); }

.card-type-badge {
  position: absolute;
  top: 1rem; left: 1rem;
  background: var(--accent2);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.7rem;
}

.badge-haisen { background: #2a4a8a; }
.badge-haison { background: #2a6a2a; }
.badge-haiko  { background: #6a4a1a; }

.card-body { padding: 1.4rem; }

.card-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.4rem;
}

.card-location {
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 0.8rem;
}

.card-desc {
  font-size: 0.875rem;
  color: var(--text2);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.card-era {
  font-size: 0.75rem;
  color: var(--text3);
  border: 1px solid var(--border);
  padding: 0.2rem 0.6rem;
  font-family: var(--font-heading);
}

.card-status {
  font-size: 0.7rem;
  font-family: var(--font-heading);
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
}

.status-preserved { background: rgba(100,180,100,0.15); color: #6ab46a; border: 1px solid #6ab46a40; }
.status-danger    { background: rgba(192,57,43,0.15);  color: #c0392b; border: 1px solid #c0392b40; }
.status-tour      { background: rgba(52,152,219,0.15); color: #3498db; border: 1px solid #3498db40; }
.status-nature    { background: rgba(100,160,100,0.15); color: #7ab47a; border: 1px solid #7ab47a40; }

.gallery-more {
  text-align: center;
  margin-top: 3rem;
}

.btn-more {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text2);
  padding: 0.9rem 3rem;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all 0.2s;
}

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

/* ===== CATEGORY SECTION ===== */
.category-section {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
}

.cat-card {
  display: block;
  text-decoration: none;
  padding: 2.5rem 2rem;
  border: 1px solid var(--border);
  background: var(--surface);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.cat-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.3s;
}

.cat-card:hover::before { transform: scaleX(1); }

.cat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px var(--shadow);
  border-color: var(--accent);
}

.cat-icon { font-size: 2.5rem; display: block; margin-bottom: 1rem; }

.cat-card h3 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.cat-card p {
  font-size: 0.8rem;
  color: var(--text2);
  margin-bottom: 1rem;
}

.cat-count {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--accent);
}

/* ===== ABOUT SECTION ===== */
.about-section {
  padding: 6rem 2rem;
  background: var(--bg3);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--text);
  margin: 1rem 0 1.5rem;
}

.about-desc {
  color: var(--text2);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.about-company {
  color: var(--text);
  font-size: 0.9rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.about-link {
  display: inline-block;
  margin-top: 1rem;
  color: var(--accent);
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  transition: opacity 0.2s;
}

.about-link:hover { opacity: 0.7; }

.about-deco {
  display: flex;
  align-items: center;
  justify-content: center;
}

.deco-box {
  text-align: center;
  padding: 3rem 2rem;
  border: 1px solid var(--border);
  background: var(--surface);
  width: 100%;
}

.deco-line {
  height: 1px;
  background: var(--border);
  margin: 1.5rem 0;
}

.deco-text {
  font-family: var(--font-body);
  font-size: 1.1rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 3rem 2rem;
  text-align: center;
}

.footer-inner { max-width: 600px; margin: 0 auto; }

.footer-logo {
  margin-bottom: 0.5rem;
}

.footer-tagline {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.4em;
  color: var(--text3);
  margin-bottom: 2rem;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-nav a {
  color: var(--text3);
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  transition: color 0.2s;
}

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

.footer-company {
  font-size: 0.8rem;
  color: var(--text3);
  margin-bottom: 0.5rem;
}

.footer-series {
  font-size: 0.72rem;
  color: var(--text3);
  opacity: 0.6;
  letter-spacing: 0.1em;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header-nav { gap: 1rem; }
  .nav-link { display: none; }
  .about-inner { grid-template-columns: 1fr; }
  .about-deco { display: none; }
  .stat-divider { display: none; }
  .stats-bar { gap: 1.5rem; }
}