/*
Theme Name: 関西鉄道タイムズ
Theme URI: http://kago5.balloon.ne.jp/
Author: 関西鉄道タイムズ編集部
Description: 関西の特急・路線・観光をつなぐ鉄道情報メディア「関西鉄道タイムズ」専用テーマ。鉄道ニュース・路線情報・観光特集をハブ的に発信し、姉妹鉄道サイト群へ送客するメディアサイト構成。
Version: 1.0.0
License: GNU General Public License v2 or later
Text Domain: kansaitetsudo
Tags: news, blog, magazine, two-columns, custom-menu, custom-logo, featured-images
*/

/* ============================================================
   CSS Variables
============================================================ */
:root {
  --color-primary: #0d3b6e;       /* ネイビー（鉄道の信頼感） */
  --color-primary-dark: #082547;
  --color-primary-light: #1c5a9e;
  --color-accent: #d97706;        /* オレンジ（新着・強調） */
  --color-accent-dark: #b45309;
  --color-red: #dc2626;           /* 注意・運行情報 */
  --color-text: #1f2937;
  --color-text-muted: #6b7280;
  --color-text-light: #9ca3af;
  --color-bg: #ffffff;
  --color-bg-light: #f9fafb;
  --color-bg-section: #f3f4f6;
  --color-border: #e5e7eb;
  --color-link: #0d3b6e;
  --color-link-hover: #d97706;

  --font-jp: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --font-serif: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.1);

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

  --container-w: 1200px;
}

/* ============================================================
   Base
============================================================ */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-jp);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-link); text-decoration: none; transition: color .15s; }
a:hover { color: var(--color-link-hover); }
img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
  margin-top: 0;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
}
p { margin: 0 0 1em; }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ============================================================
   Header
============================================================ */
.site-header {
  background: var(--color-bg);
  border-bottom: 3px solid var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-top {
  background: var(--color-primary);
  color: #fff;
  font-size: .85rem;
  padding: 6px 0;
}
.header-top-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header-top a { color: #fff; opacity: .9; }
.header-top a:hover { opacity: 1; }
.header-top-links { display: flex; gap: 1.2rem; }

.header-main {
  padding: var(--space-md) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  max-width: var(--container-w);
  margin: 0 auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

.site-branding .site-title {
  font-size: 1.7rem;
  font-weight: 800;
  margin: 0;
  font-family: var(--font-serif);
  letter-spacing: .02em;
}
.site-branding .site-title a {
  color: var(--color-primary);
}
.site-branding .site-title a:hover {
  color: var(--color-accent);
}
.site-branding .site-description {
  font-size: .8rem;
  color: var(--color-text-muted);
  margin: 4px 0 0;
}

.header-search {
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  max-width: 280px;
}
.header-search input {
  border: 0;
  padding: .5em .8em;
  width: 100%;
  outline: none;
  font-size: .9rem;
}
.header-search button {
  background: var(--color-primary);
  color: #fff;
  border: 0;
  padding: .5em 1em;
  cursor: pointer;
  font-size: .85rem;
}
.header-search button:hover { background: var(--color-accent); }

/* ============================================================
   Global Navigation
============================================================ */
.global-nav {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}
.global-nav-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--space-md);
}
.global-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
}
.global-nav li a {
  display: block;
  padding: .85em 1.2em;
  color: var(--color-text);
  font-weight: 600;
  font-size: .95rem;
  border-bottom: 3px solid transparent;
  transition: all .15s;
}
.global-nav li a:hover,
.global-nav li.current-menu-item a {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
  background: var(--color-bg-light);
}

/* ============================================================
   Hero (front page)
============================================================ */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  padding: var(--space-3xl) 0;
  text-align: center;
}
.hero h1 {
  color: #fff;
  font-size: 2.2rem;
  margin: 0 0 .5em;
  font-family: var(--font-serif);
}
.hero p {
  font-size: 1.05rem;
  opacity: .92;
  max-width: 720px;
  margin: 0 auto;
}

/* ============================================================
   Section Headings
============================================================ */
.section {
  padding: var(--space-2xl) 0;
}
.section-alt {
  background: var(--color-bg-light);
}
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--color-primary);
}
.section-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0;
  color: var(--color-primary);
}
.section-title::before {
  content: "■";
  color: var(--color-accent);
  margin-right: .4em;
  font-size: .8em;
}
.section-link {
  font-size: .9rem;
  font-weight: 600;
  color: var(--color-link);
}
.section-link::after { content: " →"; }

/* ============================================================
   News list (top page)
============================================================ */
.news-list {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.news-item {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  padding: .9em 1.2em;
  border-bottom: 1px solid var(--color-border);
  font-size: .95rem;
}
.news-item:last-child { border-bottom: none; }
.news-item:hover { background: var(--color-bg-light); }
.news-date {
  color: var(--color-text-muted);
  font-size: .85rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  min-width: 90px;
}
.news-category {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 2px 10px;
  border-radius: 3px;
  font-size: .75rem;
  font-weight: 600;
  white-space: nowrap;
  min-width: 80px;
  text-align: center;
}
.news-category.cat-news { background: var(--color-primary); }
.news-category.cat-tokkyu { background: #1c5a9e; }
.news-category.cat-kanko { background: #15803d; }
.news-category.cat-rosen { background: #7c3aed; }
.news-category.cat-rekishi { background: #92400e; }
.news-category.cat-unko { background: var(--color-red); }
.news-title-link {
  color: var(--color-text);
  flex: 1;
  font-weight: 500;
}
.news-title-link:hover { color: var(--color-primary); text-decoration: underline; }

/* ============================================================
   Card grid (post pickup)
============================================================ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.card-thumb {
  display: block;
  aspect-ratio: 16/9;
  background: var(--color-bg-section);
  overflow: hidden;
}
.card-thumb img {
  width: 100%; height: 100%; object-fit: cover;
}
.card-body {
  padding: var(--space-lg);
}
.card-meta {
  display: flex;
  gap: .6em;
  align-items: center;
  font-size: .8rem;
  margin-bottom: .5em;
}
.card-meta .news-category { font-size: .7rem; min-width: auto; }
.card-meta .card-date { color: var(--color-text-muted); }
.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 .5em;
  line-height: 1.4;
}
.card-title a { color: var(--color-text); }
.card-title a:hover { color: var(--color-primary); }
.card-excerpt {
  font-size: .88rem;
  color: var(--color-text-muted);
  margin: ;
}

/* ============================================================
   Sister sites grid (送客ハブ)
============================================================ */
.sister-sites {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-md);
}
.sister-site-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  text-align: center;
  transition: all .15s;
  display: block;
  color: var(--color-text);
}
.sister-site-card:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-light);
  transform: translateY(-2px);
  color: var(--color-primary);
}
.sister-group {
  margin-bottom: var(--space-2xl);
}
.sister-group:last-child {
  margin-bottom: 0;
}
.sister-group-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 var(--space-md);
  padding-left: var(--space-sm);
  border-left: 4px solid var(--color-accent);
  color: var(--color-text);
}
.sister-site-name {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 .2em;
}
.sister-site-tag {
  font-size: .8rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* ============================================================
   Category tiles (front page)
============================================================ */
.cat-tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-md);
}
.cat-tile {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  text-decoration: none;
  transition: all .15s;
  border-left: 4px solid var(--color-primary);
}
.cat-tile:hover {
  background: var(--color-bg-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  color: var(--color-primary);
}
.cat-tile.cat-tokkyu  { border-left-color: #1c5a9e; }
.cat-tile.cat-kanko   { border-left-color: #15803d; }
.cat-tile.cat-rosen   { border-left-color: #7c3aed; }
.cat-tile.cat-rekishi { border-left-color: #92400e; }
.cat-tile.cat-unko    { border-left-color: var(--color-red); }
.cat-tile-name {
  font-size: 1rem;
  font-weight: 700;
}
.cat-tile-desc {
  font-size: .8rem;
  color: var(--color-text-muted);
}

/* ============================================================
   Single post / Page
============================================================ */
.entry-header {
  margin-bottom: var(--space-xl);
}
.entry-meta {
  display: flex;
  gap: .8em;
  align-items: center;
  font-size: .85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  flex-wrap: wrap;
}
.entry-title {
  font-size: 1.9rem;
  font-weight: 800;
  margin: 0 0 .4em;
  line-height: 1.4;
  color: var(--color-text);
  font-family: var(--font-serif);
}
.entry-thumb {
  margin: 0 0 var(--space-xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.entry-content {
  font-size: 1rem;
  line-height: 1.85;
}
.entry-content h2 {
  font-size: 1.4rem;
  margin: 1.6em 0 .8em;
  padding: .4em 0 .4em 1em;
  border-left: 5px solid var(--color-accent);
  background: var(--color-bg-light);
}
.entry-content h3 {
  font-size: 1.15rem;
  margin: 1.4em 0 .6em;
  padding-bottom: .3em;
  border-bottom: 2px solid var(--color-border);
}
.entry-content h4 {
  font-size: 1rem;
  margin: 1.2em 0 .4em;
  color: var(--color-primary);
}
.entry-content blockquote {
  border-left: 4px solid var(--color-accent);
  padding: .8em 1.2em;
  margin: 1em 0;
  background: var(--color-bg-light);
  color: var(--color-text-muted);
}
.entry-content ul, .entry-content ol {
  padding-left: 1.4em;
}
.entry-content li {
  margin-bottom: .3em;
}
.entry-content img {
  border-radius: var(--radius-md);
  margin: 1em 0;
}
.entry-content a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ============================================================
   Layout: 2 column (main + sidebar)
============================================================ */
.layout-2col {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-2xl);
}

@media (max-width: 900px) {
  .layout-2col { grid-template-columns: 1fr; }
}

.sidebar {
  font-size: .95rem;
}
.widget {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}
.widget-title {
  font-size: 1rem;
  font-weight: 800;
  margin: 0 0 .8em;
  padding-bottom: .5em;
  border-bottom: 2px solid var(--color-primary);
  color: var(--color-primary);
}
.widget ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.widget li {
  padding: .5em 0;
  border-bottom: 1px dashed var(--color-border);
}
.widget li:last-child { border-bottom: none; }
.widget a {
  color: var(--color-text);
  font-size: .9rem;
}
.widget a:hover {
  color: var(--color-primary);
}

/* ============================================================
   Breadcrumbs
============================================================ */
.breadcrumb-bar {
  background: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
  padding: .6em 0;
  font-size: .8rem;
}
.breadcrumb {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--space-md);
  color: var(--color-text-muted);
}
.breadcrumb a { color: var(--color-link); }
.breadcrumb-sep { margin: 0 .4em; color: var(--color-text-light); }

/* ============================================================
   Page header (archive / page)
============================================================= */
.page-header {
  background: var(--color-bg-light);
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--color-border);
}
.page-header-title {
  font-size: 2rem;
  font-weight: 800;
  margin: 0;
  color: var(--color-primary);
  font-family: var(--font-serif);
}
.page-header-sub {
  font-size: .95rem;
  color: var(--color-text-muted);
  margin: .4em 0 0;
}

/* ============================================================
   Pagination
============================================================ */
.pagination {
  margin-top: var(--space-2xl);
  text-align: center;
}
.pagination .page-numbers {
  display: inline-block;
  margin: 0 3px;
  padding: .5em 1em;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  background: #fff;
  font-size: .9rem;
}
.pagination .page-numbers.current {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.pagination .page-numbers:hover:not(.current) {
  background: var(--color-bg-light);
}

/* ============================================================
   Footer
============================================================ */
.site-footer {
  background: var(--color-primary-dark);
  color: #d1d5db;
  padding: var(--space-2xl) 0 var(--space-lg);
  margin-top: var(--space-3xl);
  font-size: .9rem;
}
.footer-grid {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
}
@media (max-width: 800px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
.footer-brand h3 {
  color: #fff;
  font-size: 1.2rem;
  margin: 0 0 .5em;
  font-family: var(--font-serif);
}
.footer-brand p {
  color: #d1d5db;
  font-size: .85rem;
  line-height: 1.7;
}
.footer-col h4 {
  color: #fff;
  font-size: .9rem;
  margin: 0 0 .6em;
  border-left: 3px solid var(--color-accent);
  padding-left: .6em;
}
.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-col li {
  margin-bottom: .4em;
}
.footer-col a {
  color: #d1d5db;
  font-size: .85rem;
}
.footer-col a:hover {
  color: var(--color-accent);
}
.footer-bottom {
  max-width: var(--container-w);
  margin: var(--space-xl) auto 0;
  padding: var(--space-md) var(--space-md) 0;
  border-top: 1px solid #1f4878;
  text-align: center;
  font-size: .8rem;
  color: #9ca3af;
}

/* ============================================================
   Buttons
============================================================ */
.btn {
  display: inline-block;
  padding: .7em 1.6em;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: .95rem;
  text-decoration: none;
  transition: all .15s;
  cursor: pointer;
  border: 0;
  text-align: center;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-accent);
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ============================================================
   Responsive
============================================================ */
@media (max-width: 768px) {
  .header-top { display: none; }
  .header-main {
    flex-direction: column;
    align-items: stretch;
    gap: .8em;
  }
  .global-nav ul {
    overflow-x: auto;
    flex-wrap: nowrap;
  }
  .global-nav li a { white-space: nowrap; padding: .7em 1em; }
  .hero { padding: var(--space-2xl) 0; }
  .hero h1 { font-size: 1.6rem; }
  .entry-title { font-size: 1.4rem; }
  .news-item {
    flex-wrap: wrap;
    padding: .7em .9em;
  }
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: .3em;
  }
}

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