/* ===========================
   PokerPress - ダークテーマ CSS
   =========================== */

/* ── リセット & 変数 ─────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0f172a;
  --bg-card:     #1e293b;
  --bg-hover:    #253347;
  --border:      #334155;
  --text:        #e2e8f0;
  --muted:       #94a3b8;
  --accent:      #22c55e;
  --accent-dim:  #166534;
  --link:        #4ade80;

  /* レベルカラー */
  --c-beg:  #4ade80; --bg-beg:  #052e16;
  --c-int:  #60a5fa; --bg-int:  #172554;
  --c-adv:  #f87171; --bg-adv:  #450a0a;
  --c-trn:  #fbbf24; --bg-trn:  #451a03;
  --c-ana:  #c084fc; --bg-ana:  #2e1065;

  --radius: .75rem;
  --shadow: 0 4px 24px rgba(0,0,0,.4);
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: system-ui, -apple-system, 'Hiragino Sans', 'Meiryo', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

/* ── レイアウト ─────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.layout-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2rem;
  padding-top: 2rem;
  padding-bottom: 3rem;
  align-items: start;
}

.layout-article {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 2rem;
  padding-top: 2rem;
  padding-bottom: 3rem;
  align-items: start;
}

.layout-main { min-width: 0; }

/* ── ヘッダー ─────────────────────── */
.site-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: .5rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.25rem;
}
.site-logo:hover { text-decoration: none; }

.logo-icon {
  font-size: 1.5rem;
  color: var(--accent);
}

.global-nav { display: flex; }

.nav-list {
  display: flex;
  list-style: none;
  gap: .25rem;
}

.nav-list a {
  color: var(--muted);
  padding: .4rem .7rem;
  border-radius: .4rem;
  font-size: .875rem;
  transition: color .2s, background .2s;
}
.nav-list a:hover {
  color: var(--text);
  background: var(--bg-hover);
  text-decoration: none;
}

/* ── レベルバー ─────────────────────── */
.level-bar {
  background: rgba(15,23,42,.9);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none;
}
.level-bar::-webkit-scrollbar { display: none; }

.level-bar-inner {
  display: flex;
  gap: .5rem;
  padding: .625rem 1.25rem;
  white-space: nowrap;
}

.level-tag {
  padding: .3rem .85rem;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 600;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border);
  transition: all .2s;
}
.level-tag:hover, .level-tag.active {
  background: var(--accent-dim);
  color: var(--accent);
  border-color: var(--accent);
  text-decoration: none;
}

/* ── ハンバーガー ─────────────────────── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: .5rem;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--muted);
  border-radius: 2px;
  transition: all .3s;
}

.mobile-menu {
  display: none;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.25rem;
}
.mobile-menu.open { display: block; }
.mobile-menu ul { list-style: none; }
.mobile-menu ul li { border-bottom: 1px solid var(--border); }
.mobile-menu ul li a {
  display: block;
  padding: .75rem 0;
  color: var(--text);
  font-size: .95rem;
}

/* ── ヒーロー ─────────────────────── */
.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1a2744 50%, #0d2010 100%);
  border-bottom: 1px solid var(--border);
  padding: 4rem 0 3.5rem;
  text-align: center;
}

.hero-eyebrow {
  color: var(--accent);
  font-size: .875rem;
  font-weight: 600;
  letter-spacing: .08em;
  margin-bottom: 1rem;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #fff 0%, #4ade80 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--muted);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.btn {
  display: inline-block;
  padding: .75rem 2rem;
  border-radius: 999px;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .2s;
}

.btn--primary {
  background: var(--accent);
  color: #000;
}
.btn--primary:hover {
  background: #16a34a;
  text-decoration: none;
}

/* ── セクション ─────────────────────── */
.section { margin-bottom: 3rem; }

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  padding-bottom: .75rem;
  border-bottom: 1px solid var(--border);
}

.section-title {
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.section-more {
  color: var(--muted);
  font-size: .875rem;
}
.section-more:hover { color: var(--accent); text-decoration: none; }

/* ── 記事グリッド ─────────────────────── */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

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

/* ── 記事カード ─────────────────────── */
.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.article-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.card-badges {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-wrap: wrap;
}

.card-category {
  font-size: .75rem;
  color: var(--muted);
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-title a {
  color: var(--text);
}
.card-title a:hover {
  color: var(--link);
  text-decoration: none;
}

.card-excerpt {
  font-size: .85rem;
  color: var(--muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: .75rem;
  border-top: 1px solid var(--border);
}

.card-date {
  font-size: .8rem;
  color: var(--muted);
}

.card-link {
  font-size: .8rem;
  font-weight: 600;
  color: var(--accent);
}
.card-link:hover { text-decoration: none; opacity: .8; }

/* ── バッジ ─────────────────────── */
.badge {
  display: inline-block;
  padding: .2rem .6rem;
  border-radius: .3rem;
  font-size: .75rem;
  font-weight: 700;
  line-height: 1;
}

.badge--beginner     { color: var(--c-beg); background: var(--bg-beg); }
.badge--intermediate { color: var(--c-int); background: var(--bg-int); }
.badge--advanced     { color: var(--c-adv); background: var(--bg-adv); }
.badge--tournament   { color: var(--c-trn); background: var(--bg-trn); }
.badge--analysis     { color: var(--c-ana); background: var(--bg-ana); }

.badge--sm { font-size: .7rem; padding: .15rem .45rem; }

/* ── サイドバー ─────────────────────── */
.sidebar { display: flex; flex-direction: column; gap: 1.5rem; }

.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.widget-title {
  font-size: .875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted);
  margin-bottom: 1rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--border);
}

.category-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .25rem;
}

.category-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .5rem .625rem;
  border-radius: .4rem;
  color: var(--text);
  font-size: .9rem;
  transition: background .2s;
}
.category-list a:hover {
  background: var(--bg-hover);
  text-decoration: none;
}

.cat-count {
  background: var(--border);
  color: var(--muted);
  font-size: .75rem;
  padding: .1rem .4rem;
  border-radius: .25rem;
}

.level-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .375rem;
}

.level-list a {
  display: block;
  text-decoration: none;
}
.level-list a:hover { opacity: .8; }

.latest-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.latest-list a {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  color: var(--text);
  font-size: .875rem;
  line-height: 1.5;
  transition: color .2s;
}
.latest-list a:hover {
  color: var(--link);
  text-decoration: none;
}

.latest-title {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── ページヘッダー ─────────────────────── */
.page-header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: .625rem;
  flex-wrap: wrap;
}

.page-desc {
  color: var(--muted);
  margin-top: .5rem;
  font-size: .95rem;
}

.page-count {
  color: var(--muted);
  font-size: .85rem;
  margin-top: .5rem;
}

/* ── 記事詳細 ─────────────────────── */
.breadcrumb {
  margin-bottom: 1.5rem;
}
.breadcrumb ol {
  list-style: none;
  display: flex;
  gap: .5rem;
  font-size: .85rem;
  color: var(--muted);
  flex-wrap: wrap;
}
.breadcrumb ol li + li::before {
  content: '›';
  margin-right: .5rem;
}
.breadcrumb ol li a { color: var(--muted); }
.breadcrumb ol li a:hover { color: var(--accent); text-decoration: none; }

.article-header {
  margin-bottom: 2rem;
}

.article-meta-top {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: .875rem;
}

.article-category {
  color: var(--muted);
  font-size: .875rem;
}
.article-category:hover { color: var(--accent); text-decoration: none; }

.article-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: .75rem;
}

.article-meta {
  color: var(--muted);
  font-size: .875rem;
}

/* ── 目次 ─────────────────────── */
.toc {
  background: var(--bg-card);
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 2rem;
}

.toc-title {
  font-size: .875rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: .875rem;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .375rem;
  counter-reset: toc;
}

.toc-item a {
  color: var(--muted);
  font-size: .875rem;
  line-height: 1.5;
  transition: color .2s;
}
.toc-item a:hover {
  color: var(--accent);
  text-decoration: none;
}

.toc-item--h3 a { padding-left: 1rem; font-size: .825rem; }

.toc-sticky { position: sticky; top: 130px; }

/* ── 記事本文 (prose) ─────────────────── */
.prose { line-height: 1.85; }

.prose h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  padding-left: .875rem;
  border-left: 4px solid var(--accent);
  color: var(--text);
}

.prose h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 2rem 0 .75rem;
  padding-left: .625rem;
  border-left: 3px solid var(--muted);
}

.prose h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 1.5rem 0 .5rem;
  color: var(--muted);
}

.prose p { margin-bottom: 1.25rem; }

.prose strong { color: var(--accent); }

.prose ul, .prose ol {
  margin: 1rem 0 1.25rem 1.5rem;
}
.prose li { margin-bottom: .375rem; }

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: .9rem;
  overflow-x: auto;
  display: block;
}

.prose th {
  background: var(--border);
  padding: .625rem .875rem;
  text-align: left;
  font-weight: 600;
  color: var(--muted);
  font-size: .8rem;
}

.prose td {
  padding: .625rem .875rem;
  border-bottom: 1px solid var(--border);
}

.prose tr:hover td { background: var(--bg-hover); }

.prose pre {
  background: #020617;
  border: 1px solid var(--border);
  border-radius: .5rem;
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.prose code {
  font-family: 'Fira Code', 'Cascadia Code', monospace;
  font-size: .875em;
  color: var(--accent);
  background: var(--bg-card);
  padding: .15em .4em;
  border-radius: .25rem;
}

.prose pre code {
  color: #e2e8f0;
  background: none;
  padding: 0;
}

.prose hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* ── 関連記事 ─────────────────────── */
.related-articles {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.related-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

/* ── ページネーション ─────────────────── */
.pagination { margin-top: 2rem; }

.pagination-nav {
  display: flex;
  justify-content: center;
  gap: .5rem;
  flex-wrap: wrap;
}

.page-btn {
  display: inline-block;
  padding: .5rem .875rem;
  border-radius: .4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: .875rem;
  transition: all .2s;
}
.page-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}
.page-btn--current {
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
  font-weight: 700;
}
.page-btn--disabled { opacity: .4; cursor: not-allowed; }
.page-btn--dots { cursor: default; background: none; border-color: transparent; }

/* ── フッター ─────────────────────── */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  padding-top: 2.5rem;
  padding-bottom: 2rem;
}

.footer-desc {
  color: var(--muted);
  font-size: .875rem;
  line-height: 1.7;
  margin-top: .75rem;
}

.footer-nav h3 {
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
  margin-bottom: .875rem;
}

.footer-nav ul { list-style: none; display: flex; flex-direction: column; gap: .4rem; }
.footer-nav ul li a {
  color: var(--muted);
  font-size: .875rem;
  transition: color .2s;
}
.footer-nav ul li a:hover {
  color: var(--accent);
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 1rem 0;
  text-align: center;
  color: var(--muted);
  font-size: .8rem;
}

/* ── その他 ─────────────────────── */
.empty-message {
  color: var(--muted);
  text-align: center;
  padding: 3rem;
}

/* ── レスポンシブ ─────────────────────── */
@media (max-width: 1024px) {
  .article-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .layout-with-sidebar,
  .layout-article {
    grid-template-columns: 1fr;
  }

  .sidebar { order: 2; }
  .layout-main { order: 1; }

  .article-grid { grid-template-columns: 1fr; }
  .article-grid--2 { grid-template-columns: 1fr; }

  .global-nav { display: none; }

  .hamburger { display: flex; }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .hero { padding: 2.5rem 0 2rem; }
  .hero-title { font-size: 1.75rem; }

  .toc-sticky { position: static; }
}

@media (max-width: 480px) {
  .section-header { flex-direction: column; align-items: flex-start; gap: .5rem; }
  .article-title { font-size: 1.25rem; }
}