/* =========================================================
   Neon Light Theme — オンラインカジノ＆イベントナビ
   ========================================================= */

:root {
  --bg: #05060a;
  --bg-soft: #0b0e17;
  --surface: rgba(15, 21, 38, 0.72);
  --surface-solid: #0e1322;
  --border: rgba(0, 240, 255, 0.18);
  --border-strong: rgba(0, 240, 255, 0.65);

  --cyan: #00f0ff;
  --magenta: #ff2d95;
  --purple: #a855f7;
  --violet: #7c3aed;
  --green: #39ff14;
  --amber: #ffb300;

  --text: #e8f1ff;
  --text-dim: #9aa7c7;

  --glow-cyan: 0 0 6px rgba(0, 240, 255, 0.9), 0 0 18px rgba(0, 240, 255, 0.45);
  --glow-magenta: 0 0 6px rgba(255, 45, 149, 0.9), 0 0 18px rgba(255, 45, 149, 0.45);

  --radius: 16px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", "Meiryo", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 80% 55% at 15% -5%, rgba(124, 58, 237, 0.28), transparent 60%),
    radial-gradient(ellipse 70% 50% at 90% 0%, rgba(0, 240, 255, 0.20), transparent 60%),
    radial-gradient(ellipse 90% 60% at 50% 110%, rgba(255, 45, 149, 0.22), transparent 60%);
  background-attachment: fixed;
  min-height: 100vh;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.045) 1px, transparent 1px);
  background-size: 42px 42px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 85%);
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 85%);
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

a { color: var(--cyan); text-decoration: none; transition: color .2s ease, text-shadow .2s ease; }
a:hover { color: #fff; text-shadow: var(--glow-cyan); }

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

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(5, 6, 10, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 0 24px rgba(0, 240, 255, 0.12);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 68px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.22rem;
  letter-spacing: .02em;
}
.logo-icon {
  font-size: 1.5rem;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}
.neon-text {
  color: #f3fbff;
  text-shadow:
    0 0 4px rgba(0, 240, 255, 0.85),
    0 0 12px rgba(0, 240, 255, 0.45),
    0 0 28px rgba(168, 85, 247, 0.5);
}
.site-nav ul {
  list-style: none;
  display: flex;
  gap: 22px;
  margin: 0;
  padding: 0;
  align-items: center;
}
.site-nav a {
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 6px 2px;
  position: relative;
}
.site-nav a:hover,
.site-nav a.active {
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}
.site-nav a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  box-shadow: 0 0 10px var(--cyan);
}

.nav-toggle { display: none; }
.nav-toggle-label {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle-label span {
  display: block;
  width: 24px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  box-shadow: var(--glow-cyan);
  transition: .3s;
}
/* ---------- Hero ---------- */
.hero { padding: 76px 0 48px; text-align: center; }
.hero-title {
  margin: 0 0 14px;
  font-size: clamp(1.9rem, 5vw, 3.1rem);
  font-weight: 900;
  letter-spacing: .03em;
}
.hero-subtitle {
  margin: 0 auto;
  max-width: 640px;
  color: var(--text-dim);
  font-size: 1.05rem;
}

.section-title {
  margin: 0 0 24px;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
  letter-spacing: .02em;
}

/* ---------- Buttons ---------- */
.btn-neon {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--cyan);
  font-weight: 700;
  background: rgba(0, 240, 255, 0.06);
  box-shadow: 0 0 14px rgba(0, 240, 255, 0.25);
  transition: .25s;
}
.btn-neon:hover {
  background: rgba(0, 240, 255, 0.14);
  box-shadow: 0 0 24px rgba(0, 240, 255, 0.6);
  color: #fff;
}

/* ---------- Post grid & cards ---------- */
.posts-section { padding: 24px 0 64px; }
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 26px;
}
.post-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  backdrop-filter: blur(8px);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.post-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-strong);
  box-shadow: 0 0 22px rgba(0, 240, 255, 0.35), 0 0 44px rgba(168, 85, 247, 0.28);
}
.post-card-link { display: block; color: inherit; }
.post-card-link:hover { color: inherit; text-shadow: none; }
.post-card-thumb {
  height: 170px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(255, 45, 149, 0.15));
}
.post-card-thumb .featured-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.neon-featured {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 30% 30%, rgba(0, 240, 255, 0.35), transparent 45%),
    radial-gradient(circle at 70% 70%, rgba(255, 45, 149, 0.35), transparent 45%),
    linear-gradient(135deg, #0b1020, #140a24);
}
.neon-featured-label {
  color: #dffaff;
  font-weight: 800;
  letter-spacing: .08em;
  text-shadow: var(--glow-cyan);
  padding: 6px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.25);
}
.post-card-body { padding: 18px 18px 22px; }
.post-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
  font-size: .8rem;
  color: var(--text-dim);
}
.post-card-category {
  color: var(--magenta);
  font-weight: 700;
  text-shadow: var(--glow-magenta);
}
.post-card-title {
  margin: 0 0 10px;
  font-size: 1.08rem;
  font-weight: 800;
  line-height: 1.45;
}
.post-card-desc {
  margin: 0;
  font-size: .88rem;
  color: var(--text-dim);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.empty { color: var(--text-dim); text-align: center; padding: 40px 0; }

/* ---------- Page header ---------- */
.page-header { padding: 40px 0 12px; }
.page-title { margin: 0 0 10px; font-size: clamp(1.5rem, 4vw, 2.1rem); font-weight: 900; }
.page-title .label { color: var(--magenta); font-size: .8em; text-shadow: var(--glow-magenta); }
.page-desc { margin: 0; color: var(--text-dim); }

/* ---------- Category cloud ---------- */
.category-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding: 8px 0 40px;
}
.category-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
}
.category-chip:hover {
  border-color: var(--border-strong);
  box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
  color: var(--cyan);
}
.category-chip .count {
  background: rgba(0, 240, 255, 0.12);
  color: var(--cyan);
  border-radius: 999px;
  padding: 1px 9px;
  font-size: .8rem;
}
/* ---------- Single post ---------- */
.post { padding: 40px 0 72px; }
.post-header { margin-bottom: 28px; }
.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 14px;
}
.post-category {
  color: var(--magenta);
  font-weight: 700;
  font-size: .85rem;
  text-shadow: var(--glow-magenta);
  border: 1px solid rgba(255, 45, 149, 0.4);
  padding: 3px 12px;
  border-radius: 999px;
}
.post-category:hover { color: #fff; box-shadow: 0 0 14px rgba(255, 45, 149, 0.5); }
.post-date { color: var(--text-dim); font-size: .85rem; }
.post-title {
  margin: 0 0 14px;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 900;
  line-height: 1.35;
}
.post-desc { margin: 0; color: var(--text-dim); font-size: 1.02rem; }

.post-featured {
  margin: 0 0 32px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 0 24px rgba(0, 240, 255, 0.18);
}
.post-featured .featured-img { width: 100%; max-height: 460px; object-fit: cover; }
.post-featured .neon-featured { min-height: 240px; }

.post-layout { display: grid; grid-template-columns: 1fr; gap: 32px; }
.post-layout.has-toc { grid-template-columns: 240px 1fr; align-items: start; }

.post-toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  position: sticky;
  top: 88px;
}
.toc-title {
  font-weight: 800;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
  margin-bottom: 10px;
}
.post-toc nav ul { list-style: none; margin: 0; padding: 0; }
.post-toc nav li { margin: 6px 0; font-size: .88rem; }
.post-toc nav li li { padding-left: 14px; font-size: .82rem; }
.post-toc a { color: var(--text-dim); }
.post-toc a:hover { color: var(--cyan); }

.post-content { min-width: 0; overflow-wrap: break-word; word-break: break-word; }
.post-content h2 {
  margin: 2em 0 .8em;
  font-size: 1.45rem;
  font-weight: 800;
  color: #eafcff;
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
  padding-left: 14px;
  border-left: 3px solid var(--cyan);
}
.post-content h3 {
  margin: 1.7em 0 .7em;
  font-size: 1.2rem;
  font-weight: 700;
  color: #f3e9ff;
  text-shadow: 0 0 8px rgba(168, 85, 247, 0.55);
}
.post-content p { margin: 0 0 1.1em; }
.post-content a { border-bottom: 1px dotted var(--cyan); }
.post-content a:hover { border-bottom-color: #fff; }
.post-content ul, .post-content ol { margin: 0 0 1.2em; padding-left: 1.4em; }
.post-content li { margin: .4em 0; }
.post-content strong { color: #fff; text-shadow: 0 0 6px rgba(0, 240, 255, 0.4); }
.post-content blockquote {
  margin: 1.4em 0;
  padding: 14px 18px;
  border-left: 3px solid var(--magenta);
  background: rgba(255, 45, 149, 0.08);
  border-radius: 0 10px 10px 0;
  color: #ffd7e9;
}
.post-content blockquote p { margin: 0; }
.post-content code {
  background: rgba(0, 240, 255, 0.1);
  color: #c9f6ff;
  padding: 2px 6px;
  border-radius: 5px;
  font-size: .9em;
}
.post-content pre {
  background: #0a0f1c;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  overflow-x: auto;
}
.post-content pre code { background: transparent; padding: 0; }
.post-content hr { border: 0; height: 1px; background: var(--border); margin: 2em 0; }
.post-content img { border-radius: 10px; margin: 1.4em auto; }
.post-content table { border-collapse: collapse; width: 100%; margin: 1.4em 0; }
.post-content th, .post-content td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; }
.post-content th { background: rgba(0, 240, 255, 0.08); }

/* ---------- FAQ ---------- */
.post-faq { margin-top: 48px; }
.faq-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
  margin-bottom: 18px;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  padding: 16px 18px;
  font-weight: 700;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #eaf6ff;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
  content: "+";
  color: var(--cyan);
  font-weight: 800;
  text-shadow: var(--glow-cyan);
  transition: transform .2s;
}
.faq-item[open] summary::before { transform: rotate(45deg); }
.faq-answer { padding: 0 18px 18px; color: var(--text-dim); }
.faq-answer p { margin: 0; }
/* ---------- Post footer ---------- */
.post-footer {
  margin-top: 48px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.post-nav {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  font-size: .92rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.post-nav:hover { border-color: var(--border-strong); box-shadow: 0 0 16px rgba(0, 240, 255, 0.3); color: var(--cyan); }
.post-nav.next { text-align: right; }

/* ---------- Pagination ---------- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 44px;
}
.page-link {
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-weight: 700;
}
.page-link:hover { border-color: var(--border-strong); color: var(--cyan); box-shadow: 0 0 16px rgba(0, 240, 255, 0.3); }
.page-info { color: var(--text-dim); }

/* ---------- 404 ---------- */
.not-found { text-align: center; padding: 100px 0; }
.not-found h1 { font-size: 5rem; margin: 0 0 10px; }
.not-found p { color: var(--text-dim); margin-bottom: 24px; }

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 40px;
  border-top: 1px solid var(--border);
  background: rgba(5, 6, 10, 0.7);
  box-shadow: 0 -1px 24px rgba(0, 240, 255, 0.12);
}
.footer-inner { padding: 40px 20px; text-align: center; }
.footer-brand { margin: 0 0 8px; font-weight: 800; font-size: 1.15rem; }
.footer-desc { margin: 0 auto 16px; color: var(--text-dim); font-size: .92rem; max-width: 560px; }
.footer-disclaimer {
  margin: 0 auto 20px;
  max-width: 640px;
  color: var(--text-dim);
  font-size: .8rem;
  line-height: 1.7;
  padding: 12px 16px;
  border: 1px dashed var(--border);
  border-radius: 10px;
}
.footer-copy { margin: 0; color: var(--text-dim); font-size: .82rem; }

/* ---------- Responsive ---------- */
@media (min-width: 640px) {
  .post-footer { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .header-inner { flex-wrap: wrap; height: auto; padding-top: 12px; padding-bottom: 12px; }
  .nav-toggle-label { display: flex; }
  .site-nav {
    display: none;
    flex-basis: 100%;
    order: 3;
  }
  .site-nav ul { flex-direction: column; gap: 0; padding: 6px 0 4px; }
  .site-nav li { width: 100%; }
  .site-nav a { display: block; padding: 12px 2px; font-size: 1rem; }
  .nav-toggle:checked ~ .site-nav { display: block; }
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(2) { opacity: 0; }
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .post-layout.has-toc { grid-template-columns: 1fr; }
  .post-toc { position: static; }
}