/*
Theme Name: rosen26
Theme URI: https://narasen.mi-ktt.ne.jp/
Author: rosen26
Description: 奈良線情報サイト用WordPressテーマ
Version: 1.0.0
License: GNU General Public License v2 or later
Text Domain: rosen26
*/

/* ============================================
   CSS Variables
   ============================================ */
:root {
  --color-primary: #4c8432;
  --color-primary-dark: #375e24;
  --color-accent: #e8a020;
  --color-accent-light: #f5b830;
  --color-bg: #ffffff;
  --color-bg-light: #f6faf4;
  --color-bg-dark: #e8f2e3;
  --color-text: #1a2614;
  --color-text-muted: #5a6857;
  --color-border: #cfe0c8;
  --color-white: #ffffff;

  --font-main: 'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.05);

  --container-max: 1080px;
  --header-height: 64px;

  --transition: 0.2s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* ============================================
   Layout
   ============================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.site-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-main {
  flex: 1;
}

/* ============================================
   Header
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-primary);
  height: var(--header-height);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

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

.site-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.03em;
  line-height: 1.2;
}

.site-title a {
  color: inherit;
}

.site-title a:hover {
  opacity: 0.85;
}

.header-line-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: var(--font-size-xs);
  font-weight: 700;
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
}

/* ============================================
   Navigation
   ============================================ */
.main-navigation {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-menu li {
  position: relative;
}

.nav-menu a {
  display: flex;
  align-items: center;
  height: var(--header-height);
  padding: 0 var(--space-md);
  color: rgba(255, 255, 255, 0.88);
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color var(--transition), background-color var(--transition);
  white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu .current-menu-item > a,
.nav-menu .current-page-ancestor > a {
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.1);
}

.nav-menu .current-menu-item > a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--space-md);
  right: var(--space-md);
  height: 3px;
  background-color: var(--color-accent);
  border-radius: 2px 2px 0 0;
}

/* Dropdown */
.nav-menu .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-lg);
  border-top: 3px solid var(--color-accent);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}

.nav-menu li:hover > .sub-menu,
.nav-menu li:focus-within > .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-menu .sub-menu a {
  height: auto;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

/* Hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition);
}

.menu-toggle:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   Hero Section (CSS-only, no image required)
   ============================================ */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #3a6a26 60%, #2b5020 100%);
  color: var(--color-white);
  padding: var(--space-3xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 120px,
      rgba(255,255,255,0.015) 120px,
      rgba(255,255,255,0.015) 121px
    ),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 120px,
      rgba(255,255,255,0.015) 120px,
      rgba(255,255,255,0.015) 121px
    );
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-lg);
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.hero-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.02em;
}

.hero-description {
  font-size: var(--font-size-md);
  color: rgba(255, 255, 255, 0.8);
  max-width: 540px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-sm);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-xl);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent-light);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--color-white);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-border);
}

.btn-ghost:hover {
  background-color: var(--color-bg-light);
}

.btn-arrow::after {
  content: '→';
  font-size: var(--font-size-base);
}

/* ============================================
   Section Layout
   ============================================ */
.section {
  padding: var(--space-3xl) 0;
}

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

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.section-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  position: relative;
  padding-bottom: var(--space-sm);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 3px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

.section-link {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
  transition: gap var(--transition);
}

.section-link::after {
  content: '→';
}

.section-link:hover {
  gap: 8px;
}

/* ============================================
   Quick Links (Top Nav Cards)
   ============================================ */
.quick-links {
  background-color: var(--color-bg-dark);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
}

.quick-links-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-sm);
}

.quick-link-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md) var(--space-sm);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  transition: background-color var(--transition), border-color var(--transition), transform var(--transition);
}

.quick-link-item:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.quick-link-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-light);
  border-radius: 50%;
  font-size: 1.1rem;
  transition: background-color var(--transition);
}

.quick-link-item:hover .quick-link-icon {
  background-color: rgba(255, 255, 255, 0.15);
}

/* ============================================
   News / Updates
   ============================================ */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.news-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition);
}

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

.news-item:hover {
  background-color: var(--color-bg-light);
  margin: 0 calc(-1 * var(--space-md));
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

.news-date {
  flex-shrink: 0;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  min-width: 84px;
  padding-top: 2px;
  letter-spacing: 0.03em;
}

.news-category {
  flex-shrink: 0;
  display: inline-block;
  padding: 1px 8px;
  border-radius: 2px;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  min-width: 72px;
  text-align: center;
}

.news-category.cat-info {
  background-color: #dff0d4;
  color: #375e24;
}

.news-category.cat-schedule {
  background-color: #fff3e0;
  color: #c86400;
}

.news-category.cat-event {
  background-color: #e8f5e9;
  color: #2d6a2d;
}

.news-title {
  font-size: var(--font-size-base);
  color: var(--color-text);
  line-height: 1.5;
  transition: color var(--transition);
}

.news-item:hover .news-title {
  color: var(--color-primary);
}

/* ============================================
   Card Grid
   ============================================ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.card-grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.card-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.card-body {
  padding: var(--space-lg);
}

.card-label {
  display: inline-block;
  padding: 2px 8px;
  background-color: var(--color-bg-dark);
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
}

.card-title {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: var(--space-sm);
}

.card-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  transition: gap var(--transition);
}

.card-link::after {
  content: '→';
}

.card-link:hover {
  gap: 8px;
}

/* Color-coded card tops */
.card-top {
  height: 6px;
}

.card-top-primary { background-color: var(--color-primary); }
.card-top-accent  { background-color: var(--color-accent); }
.card-top-green   { background-color: #4a7c59; }
.card-top-teal    { background-color: #2e7d8a; }

/* ============================================
   Station List
   ============================================ */
.station-line {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: 40px;
}

.station-line::before {
  content: '';
  position: absolute;
  left: 16px;
  top: 12px;
  bottom: 12px;
  width: 4px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-accent));
  border-radius: 2px;
}

.station-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
  position: relative;
}

.station-dot {
  position: absolute;
  left: -30px;
  width: 14px;
  height: 14px;
  background-color: var(--color-white);
  border: 3px solid var(--color-primary);
  border-radius: 50%;
  z-index: 1;
}

.station-dot.is-major {
  border-color: var(--color-accent);
  background-color: var(--color-accent);
}

.station-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  transition: color var(--transition);
}

.station-name:hover {
  color: var(--color-primary);
}

.station-km {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-left: auto;
}

/* ============================================
   Content Layout (blog)
   ============================================ */
.content-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-2xl);
  align-items: start;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md) 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-xl);
}

.breadcrumb-item + .breadcrumb-item::before {
  content: '/';
  margin-right: var(--space-xs);
}

.breadcrumb-item a {
  color: var(--color-primary);
  transition: opacity var(--transition);
}

.breadcrumb-item a:hover {
  opacity: 0.7;
}

/* ============================================
   Post / Article
   ============================================ */
.post-header {
  margin-bottom: var(--space-xl);
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.post-title {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-text);
}

.post-content {
  font-size: var(--font-size-base);
  line-height: 1.9;
  color: var(--color-text);
}

.post-content h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin: var(--space-2xl) 0 var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-border);
  color: var(--color-primary);
}

.post-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin: var(--space-xl) 0 var(--space-sm);
  color: var(--color-text);
}

.post-content p {
  margin-bottom: var(--space-lg);
}

.post-content ul,
.post-content ol {
  margin: 0 0 var(--space-lg) var(--space-xl);
  list-style: disc;
}

.post-content ol {
  list-style: decimal;
}

.post-content li {
  margin-bottom: var(--space-xs);
}

.post-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-sm);
}

.post-content th,
.post-content td {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  text-align: left;
}

.post-content th {
  background-color: var(--color-bg-dark);
  font-weight: 700;
  color: var(--color-primary);
}

.post-content tr:nth-child(even) td {
  background-color: var(--color-bg-light);
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--space-lg));
}

.widget {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-lg);
}

.widget-title {
  padding: var(--space-md) var(--space-lg);
  background-color: var(--color-bg-dark);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-border);
  letter-spacing: 0.04em;
}

.widget-content {
  padding: var(--space-md) var(--space-lg);
}

.widget-list li {
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
}

.widget-list li:last-child {
  border-bottom: none;
}

.widget-list a {
  color: var(--color-text);
  transition: color var(--transition);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.widget-list a:hover {
  color: var(--color-primary);
}

/* ============================================
   Archive / Post List
   ============================================ */
.post-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.post-list-item {
  display: flex;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.post-list-item:last-child {
  border-bottom: none;
}

.post-list-body {
  flex: 1;
}

.post-list-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.post-list-title a {
  color: var(--color-text);
  transition: color var(--transition);
}

.post-list-title a:hover {
  color: var(--color-primary);
}

.post-list-excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================
   Pagination
   ============================================ */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-2xl);
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 600;
  transition: background-color var(--transition), color var(--transition);
}

.pagination a {
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.pagination a:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.pagination .current {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background-color: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.75);
  margin-top: auto;
}

.footer-main {
  padding: var(--space-3xl) 0 var(--space-2xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
}

.footer-brand .site-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
  display: block;
}

.footer-description {
  font-size: var(--font-size-sm);
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  margin-top: var(--space-sm);
}

.footer-heading {
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.4);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-links a::before {
  content: '›';
  color: var(--color-accent);
}

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

.footer-bottom {
  padding: var(--space-lg) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.4);
}

.footer-legal {
  display: flex;
  gap: var(--space-lg);
}

.footer-legal a {
  color: rgba(255, 255, 255, 0.4);
  transition: color var(--transition);
}

.footer-legal a:hover {
  color: rgba(255, 255, 255, 0.75);
}

/* ============================================
   Page Header (inner pages)
   ============================================ */
.page-header {
  background-color: var(--color-bg-dark);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
}

.page-header-title {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.page-header-sub {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ============================================
   404 Page
   ============================================ */
.error-404 {
  text-align: center;
  padding: var(--space-3xl) 0;
}

.error-code {
  font-size: 7rem;
  font-weight: 800;
  color: var(--color-bg-dark);
  line-height: 1;
  margin-bottom: var(--space-md);
}

.error-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.error-text {
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
}

/* ============================================
   CPT Labels
   ============================================ */
.cpt-label {
  display: inline-block;
  padding: 2px 10px;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  border-radius: var(--radius-sm);
}
.cpt-station  { background: #dff0d4; color: #375e24; }
.cpt-timetable{ background: #fff8e1; color: #b76e00; }
.cpt-history  { background: #f3e8ff; color: #6b3fa0; }
.cpt-event    { background: #fef3dc; color: #9a6000; }

/* ============================================
   Station Table
   ============================================ */
.station-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.station-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
  white-space: nowrap;
}

.station-table thead {
  background-color: var(--color-primary);
  color: var(--color-white);
  position: sticky;
  top: var(--header-height);
  z-index: 2;
}

.station-table th {
  padding: var(--space-sm) var(--space-md);
  font-weight: 600;
  font-size: var(--font-size-xs);
  letter-spacing: 0.06em;
  text-align: left;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.station-table th:last-child {
  border-right: none;
}

.station-table td {
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  vertical-align: middle;
  color: var(--color-text);
}

.station-table td:last-child {
  border-right: none;
}

.station-table tbody tr:last-child td {
  border-bottom: none;
}

.station-table tbody tr:hover td {
  background-color: var(--color-bg-light);
}

.station-table tbody tr.is-major-station td {
  background-color: #f4faf2;
}

.station-table tbody tr.is-major-station:hover td {
  background-color: #e8f5e3;
}

.station-table .col-num {
  width: 48px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

.station-table .col-km {
  width: 80px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-muted);
}

.station-table .col-locker,
.station-table .col-open {
  text-align: center;
}

.station-table .col-link {
  width: 72px;
  text-align: center;
}

.station-table-link {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 600;
  color: var(--color-primary);
  transition: color var(--transition);
}

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

.station-major-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  background-color: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
}

.td-empty {
  color: var(--color-border);
}

.transfer-badge {
  display: inline-block;
  padding: 1px 8px;
  background-color: #dff0d4;
  color: #375e24;
  border-radius: 20px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  margin: 1px 2px;
}

.locker-badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 700;
}

.locker-yes {
  background-color: #e8f5e9;
  color: #2d6a2d;
}

.locker-no {
  background-color: #f5f5f5;
  color: #999;
}

.table-detail-link {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-primary);
  transition: color var(--transition);
}

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

.station-table-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-lg);
  margin-top: var(--space-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* ============================================
   Station List（アーカイブ縦積み）
   ============================================ */
.station-list {
  display: flex;
  flex-direction: column;
}

.station-list-item {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-border);
  padding-left: var(--space-lg);
  border-left: 3px solid var(--color-primary);
  margin-bottom: var(--space-md);
}

.station-list-item:last-child {
  border-bottom: none;
}

.station-list-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.station-list-title a {
  color: var(--color-primary);
  transition: color var(--transition);
}

.station-list-title a:hover {
  color: var(--color-accent);
}

.station-list-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.station-list-info {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.station-list-label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-text-muted);
}

.station-list-label::after {
  content: '：';
}

.station-list-excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-sm);
}

.station-list-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
}

.station-tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border: 1px solid var(--color-border);
  background: var(--color-bg-light);
  color: var(--color-text-muted);
}

.tag-locker {
  background: var(--color-bg-dark);
  color: var(--color-primary);
  border-color: var(--color-border);
}

.tag-transfer {
  background: #dff0d4;
  color: #375e24;
  border-color: #c4ddb8;
}

/* ============================================
   Station Info Card (single)
   ============================================ */
.station-info-card {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.station-info-card-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  letter-spacing: 0.04em;
}

.station-info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.station-info-table th {
  width: 120px;
  padding: var(--space-sm) var(--space-md) var(--space-sm) 0;
  font-weight: 600;
  color: var(--color-text-muted);
  white-space: nowrap;
  vertical-align: top;
}

.station-info-table td {
  padding: var(--space-sm) 0;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

.station-info-table tr:last-child td {
  border-bottom: none;
}

/* ============================================
   Station Related Links
   ============================================ */
.station-related-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.related-link-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  transition: background-color var(--transition), border-color var(--transition);
  flex: 1;
  min-width: 160px;
}

.related-link-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.related-link-icon {
  font-size: 1.25rem;
}

.related-link-arrow {
  margin-left: auto;
}

/* ============================================
   Timetable Styles
   ============================================ */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 2px solid var(--color-border);
}

.filter-tab {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  color: var(--color-text-muted);
  background: var(--color-white);
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}

.filter-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-tab.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.timetable-group {
  margin-bottom: var(--space-2xl);
}

.timetable-group-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-primary);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--space-md);
}

.timetable-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

.timetable-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-md);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition), transform var(--transition);
  border-top: 3px solid var(--color-border);
}

.timetable-card.timetable-down {
  border-top-color: var(--color-primary);
}

.timetable-card.timetable-up {
  border-top-color: var(--color-accent);
}

.timetable-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.timetable-card-head {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 4px;
}

.direction-badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 20px;
  font-size: var(--font-size-xs);
  font-weight: 700;
}

.direction-down {
  background: #dff0d4;
  color: #375e24;
}

.direction-up {
  background: #fff3e0;
  color: #b76e00;
}

.daytype-badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 20px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  background: var(--color-bg-dark);
  color: var(--color-text-muted);
}

.timetable-card-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

.timetable-card-arrow {
  margin-top: auto;
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: 700;
}

.timetable-notice {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: #fffbea;
  border: 1px solid #f0d060;
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
  line-height: 1.6;
}

.notice-icon {
  color: #d4a010;
  font-style: normal;
  font-weight: 700;
  flex-shrink: 0;
}

.timetable-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
  font-variant-numeric: tabular-nums;
}

.timetable-content th,
.timetable-content td {
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  text-align: center;
}

.timetable-content th {
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
}

.timetable-switch {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.timetable-switch-title {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  margin-bottom: var(--space-sm);
}

.timetable-switch-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.timetable-switch-link {
  padding: var(--space-xs) var(--space-md);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-primary);
  transition: background-color var(--transition);
}

.timetable-switch-link:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* ============================================
   History Styles
   ============================================ */
.history-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.history-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition), transform var(--transition);
}

.history-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.history-card-icon {
  flex-shrink: 0;
  font-size: 1.5rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-dark);
  border-radius: 50%;
}

.history-card-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

.history-card-excerpt {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-xs);
}

.history-card-link {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-primary);
}

.post-lead {
  font-size: var(--font-size-md);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

/* ============================================
   Event Styles
   ============================================ */
.event-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-lg);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition), transform var(--transition);
  border-top: 4px solid var(--color-primary);
}

.event-card-upcoming {
  border-top-color: var(--color-accent);
}

.event-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.event-card-date {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
}

.event-date-badge {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.event-station-badge {
  display: inline-block;
  padding: 1px 8px;
  background: #dff0d4;
  color: #375e24;
  border-radius: 20px;
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.event-card-title {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
}

.event-card-venue {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.event-card-excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.event-info-card {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.past-event-badge {
  display: inline-block;
  padding: 2px 10px;
  background: #f5f5f5;
  color: #888;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 700;
}

/* Past Events List */
.event-past-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.event-past-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  transition: background-color var(--transition);
}

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

.event-past-item:hover {
  background-color: var(--color-bg-light);
}

.event-past-date {
  flex-shrink: 0;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  min-width: 56px;
  font-variant-numeric: tabular-nums;
}

.event-past-title {
  flex: 1;
  color: var(--color-text);
  font-weight: 500;
}

.event-past-station {
  flex-shrink: 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ============================================
   Post Navigation
   ============================================ */
.post-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

/* ============================================
   Tourism List Item (front-page)
   ============================================ */
.tourism-list-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: background-color var(--transition), transform var(--transition);
}

.tourism-list-item:hover {
  background-color: var(--color-bg-light);
  transform: translateX(4px);
}

.tourism-list-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-dark);
  border-radius: 50%;
  font-size: 1.1rem;
}

.tourism-list-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  flex: 1;
}

.tourism-list-arrow {
  margin-left: auto;
  color: var(--color-accent);
  font-weight: 700;
}

/* ============================================
   Utilities
   ============================================ */
.text-center { text-align: center; }
.text-muted  { color: var(--color-text-muted); }
.mt-xl       { margin-top: var(--space-xl); }
.mb-xl       { margin-bottom: var(--space-xl); }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .quick-links-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }
  .content-layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
  }
  .timetable-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .history-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.5rem;
  }

  .menu-toggle {
    display: flex;
  }

  .main-navigation {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-primary-dark);
    flex-direction: column;
    align-items: stretch;
    overflow-y: auto;
    padding: var(--space-lg);
    gap: var(--space-xs);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 99;
  }

  .main-navigation.is-open {
    transform: translateX(0);
  }

  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-xs);
  }

  .nav-menu a {
    height: auto;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
  }

  .nav-menu .current-menu-item > a::after {
    display: none;
  }

  .nav-menu .sub-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    border-top: none;
    border-left: 3px solid var(--color-accent);
    margin-left: var(--space-md);
    box-shadow: none;
  }

  /* グリッド */
  .card-grid {
    grid-template-columns: 1fr;
  }

  .card-grid-2,
  .card-grid-4 {
    grid-template-columns: 1fr;
  }

  /* ヒーロー */
  .hero {
    padding: var(--space-2xl) 0;
  }

  .hero-title br {
    display: none;
  }

  .hero-description br {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  /* クイックリンク */
  .quick-links-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* フッター */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

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

  /* 時刻表 */
  .timetable-card-grid {
    grid-template-columns: 1fr;
  }

  /* 歴史 */
  .history-grid {
    grid-template-columns: 1fr;
  }

  /* 駅情報テーブル (詳細ページ) */
  .station-info-table {
    display: block;
  }

  .station-info-table th {
    width: auto;
    display: block;
    padding-bottom: 0;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
  }

  .station-info-table td {
    display: block;
    padding-top: var(--space-xs);
    border-bottom: 1px solid var(--color-border);
  }

  /* 駅アーカイブテーブル：小さい画面では一部列を非表示 */
  .station-table .col-open {
    display: none;
  }

  /* 関連リンク */
  .station-related-links {
    flex-direction: column;
  }

  /* ニュース */
  .news-item {
    flex-wrap: wrap;
    gap: var(--space-xs);
  }

  /* ページヘッダー */
  .page-header-title {
    font-size: var(--font-size-xl);
  }

  /* イベント過去一覧 */
  .event-past-item {
    flex-wrap: wrap;
    gap: var(--space-xs);
  }

  .event-past-station {
    width: 100%;
  }

  /* ポストナビゲーション（記事前後）*/
  .post-navigation {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 480px) {
  .card-grid-2,
  .card-grid-4 {
    grid-template-columns: 1fr;
  }

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

  /* 駅テーブル：さらに列を絞る */
  .station-table .col-km,
  .station-table .col-locker {
    display: none;
  }

  /* フィルタータブ折り返し */
  .filter-tabs {
    gap: 4px;
  }

  .filter-tab {
    font-size: 0.6875rem;
    padding: 2px 8px;
  }

  /* コンテナ余白を少し狭める */
  .container {
    padding: 0 var(--space-md);
  }

  /* ヒーローボタン */
  .btn {
    width: 100%;
    justify-content: center;
  }

  /* セクションパディング縮小 */
  .section {
    padding: var(--space-2xl) 0;
  }
}