* { box-sizing: border-box; margin: 0; padding: 0; }
html { scrollbar-gutter: stable; overflow-x: hidden; }

:root {
  --bg:          #060b15;
  --bg-panel:    #0a1628;
  --bg-hover:    #132040;
  --border:      #c8c8d0;
  --border-dim:  #505060;
  --text:        #e8e8f0;
  --text-dim:    #7878a0;
  --text-head:   #f0f0f8;
  --cursor:      #ff4040;
}

body {
  font-family: "JF Dot M+", monospace;
  font-size: 15px;
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.8;
}

/* ===== STARFIELD ===== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(1px 1px at  5%  8%, rgba(255,255,220,.7) 0%, transparent 100%),
    radial-gradient(1px 1px at 12% 22%, rgba(255,255,220,.5) 0%, transparent 100%),
    radial-gradient(2px 2px at 18% 55%, rgba(255,255,220,.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 24%  3%, rgba(255,255,220,.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 30% 38%, rgba(255,255,220,.3) 0%, transparent 100%),
    radial-gradient(2px 2px at 37% 70%, rgba(255,255,220,.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 43% 15%, rgba(255,255,220,.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 50% 85%, rgba(255,255,220,.6) 0%, transparent 100%),
    radial-gradient(2px 2px at 56% 45%, rgba(255,255,220,.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 63% 28%, rgba(255,255,220,.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 70%  5%, rgba(255,255,220,.7) 0%, transparent 100%),
    radial-gradient(1px 1px at 75% 62%, rgba(255,255,220,.4) 0%, transparent 100%),
    radial-gradient(2px 2px at 82% 18%, rgba(255,255,220,.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 88% 78%, rgba(255,255,220,.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 93% 42%, rgba(255,255,220,.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 97% 90%, rgba(255,255,220,.4) 0%, transparent 100%);
}

/* ===== RPG WINDOW ===== */
.rpg-window {
  position: relative;
  background: var(--bg-panel);
  border: 3px solid var(--border);
  box-shadow:
    inset 0 0 0 1px var(--border-dim),
    0 0 20px rgba(200, 200, 255, .1),
    0 4px 24px rgba(0, 0, 0, .5);
}
.rpg-window::before,
.rpg-window::after {
  content: '◆';
  position: absolute;
  color: var(--border);
  font-size: 10px;
  line-height: 1;
  z-index: 1;
}
.rpg-window::before { top: -7px; left: -7px; }
.rpg-window::after  { bottom: -7px; right: -7px; }

/* ===== TOP BAR ===== */
.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--bg-panel);
  border-bottom: 2px solid var(--border-dim);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 2px 12px rgba(0,0,0,.5);
}
/* home.html: タイトルをリンクなしで表示 */
.top-bar-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-head);
  letter-spacing: 2px;
}
/* その他のページ: ホームリンク + セパレータ + ページ名 */
.top-bar-home {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-head);
  text-decoration: none;
  letter-spacing: 2px;
  white-space: nowrap;
}
.top-bar-home:hover { color: var(--border); }
.top-bar-sep { color: var(--border-dim); font-size: 12px; }
.top-bar-page { font-size: 13px; color: var(--text-dim); letter-spacing: 2px; }

/* ===== MOBILE NAV TOGGLE ===== */
.nav-toggle {
  display: none;
  margin-left: auto;
  background: none;
  border: 1px solid var(--border-dim);
  color: var(--text);
  padding: 4px 10px;
  font-family: "JF Dot M+", monospace;
  font-size: 12px;
  cursor: pointer;
}

/* ===== PAGE LAYOUT ===== */
.page-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 16px 64px;
  align-items: start;
  margin-top: 56px;
}
@media (max-width: 700px) {
  .page-layout { grid-template-columns: 1fr; }
}

/* ===== SIDEBAR ===== */
.sidebar {
  position: sticky;
  top: 80px;
  overflow: hidden;
}
.sidebar-header {
  background: var(--border-dim);
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-head);
  letter-spacing: 4px;
  text-align: center;
}
.nav-list {
  list-style: none;
  padding: 8px 0;
}
.nav-list li a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  color: var(--text);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 2px;
  transition: background .1s, color .1s;
}
.nav-list li a::before {
  content: '　';
  width: 14px;
  flex-shrink: 0;
  color: var(--cursor);
  font-size: 12px;
}
.nav-list li a:hover,
.nav-list li.active a {
  background: var(--bg-hover);
  color: var(--text-head);
}
.nav-list li.active a::before { content: '▶'; }
.nav-list li + li { border-top: 1px solid rgba(200,200,255,.07); }

@media (max-width: 700px) {
  .nav-toggle { display: none; }
  .sidebar {
    position: static;
  }
}

/* ===== MAIN CONTENT ===== */
main { min-width: 0; }
.main-window { overflow: hidden; min-width: 0; }
.main-window-header {
  background: var(--border-dim);
  padding: 6px 18px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-head);
  letter-spacing: 4px;
}
.article-content {
  padding: 24px 28px;
}

/* ===== ARTICLE TYPOGRAPHY ===== */
.article-content h1 {
  font-size: 20px;
  color: var(--text-head);
  border-bottom: 2px solid var(--border-dim);
  padding-bottom: 10px;
  margin: 0 0 24px;
  letter-spacing: 3px;
}
.article-content h2 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-head);
  background: var(--border-dim);
  padding: 5px 14px;
  margin: 32px 0 14px;
  letter-spacing: 3px;
}
.article-content h3 {
  font-size: 14px;
  color: var(--border);
  border-left: 3px solid var(--border-dim);
  padding-left: 10px;
  margin: 24px 0 10px;
  letter-spacing: 2px;
}
.article-content p {
  font-size: 14px;
  line-height: 2;
  margin-bottom: 14px;
}
.article-content ul,
.article-content ol {
  margin: 10px 0 14px 8px;
  padding-left: 8px;
}
.article-content li {
  font-size: 14px;
  line-height: 1.9;
  list-style: none;
  padding-left: 18px;
  position: relative;
}
.article-content li::before {
  content: '▶';
  position: absolute;
  left: 0;
  color: var(--cursor);
  font-size: 10px;
  top: 5px;
}
.article-content a {
  color: var(--border);
  text-decoration: none;
}
.article-content a:hover {
  color: var(--text-head);
  text-decoration: underline;
}
.article-content blockquote {
  border-left: 3px solid var(--border-dim);
  padding: 2px 0 2px 14px;
  color: var(--text-dim);
  font-size: 13px;
  margin: 6px 0;
}
.article-content code {
  font-family: "JF Dot M+", monospace;
  font-size: 13px;
  color: var(--text-head);
  background: rgba(255,255,255,.06);
  padding: 1px 4px;
}

.article-content img {
  max-width: 100%;
  height: auto;
}

/* ===== TABLES ===== */
.table-wrap {
  overflow-x: auto;
  width: 100%;
  margin: 14px 0 24px;
}
.article-content table {
  border-collapse: collapse;
  font-size: 13px;
  min-width: 600px;
}
.article-content thead th {
  background: rgba(80, 80, 96, .6);
  color: var(--text-head);
  border: 1px solid var(--border-dim);
  padding: 6px 10px;
  text-align: left;
  letter-spacing: 1px;
  white-space: nowrap;
}
.article-content tbody td {
  border: 1px solid rgba(200,200,255,.12);
  padding: 5px 10px;
  vertical-align: top;
}
.article-content tbody tr:nth-child(even) td {
  background: rgba(255,255,255,.03);
}
.article-content tbody tr:hover td {
  background: var(--bg-hover);
}

/* ===== BACK TO TOP ===== */
.back-top {
  display: block;
  text-align: center;
  padding: 12px;
  margin-top: 24px;
  color: var(--text-dim);
  font-size: 12px;
  letter-spacing: 3px;
  cursor: pointer;
  border-top: 1px solid var(--border-dim);
}
.back-top:hover { color: var(--text-head); }

/* ===== FOOTER ===== */
.site-footer {
  text-align: center;
  padding: 20px;
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 2px;
  border-top: 1px solid var(--border-dim);
  position: relative;
  z-index: 1;
}

/* ===== SEARCH ===== */
.search-wrap {
  position: relative;
  margin-left: auto;
}
.search-input {
  background: var(--bg);
  border: 1px solid var(--border-dim);
  color: var(--text);
  padding: 4px 10px;
  font-family: "JF Dot M+", monospace;
  font-size: 12px;
  width: 180px;
  letter-spacing: 1px;
}
.search-input:focus {
  outline: none;
  border-color: var(--border);
}
.search-input::placeholder { color: var(--text-dim); }
.search-results {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  width: 320px;
  max-height: 380px;
  overflow-y: auto;
  z-index: 200;
  display: none;
}
.search-results.active { display: block; }
.search-result-item {
  display: block;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(200,200,255,.07);
  text-decoration: none;
  color: var(--text);
}
.search-result-item:hover { background: var(--bg-hover); }
.search-result-title {
  font-size: 13px;
  color: var(--text-head);
  letter-spacing: 1px;
}
.search-result-snippet {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.search-empty {
  padding: 16px;
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
  letter-spacing: 2px;
}
.character-body {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 8px;
}
.character-face {
  width: 80px;
  height: auto;
  image-rendering: pixelated;
  flex-shrink: 0;
}

@media (max-width: 600px) {
  .top-bar { flex-wrap: wrap; }
  .top-bar-title,
  .top-bar-page { flex: 1; }
  .search-wrap { margin-left: 0; flex: 0 0 100%; margin-top: 6px; }
  .search-input { width: 100%; box-sizing: border-box; }
  .search-results { width: 100%; right: auto; left: 0; }
  .page-layout { margin-top: 92px; }
  .article-content { padding: 16px 14px; }

  /* テーブル → カードレイアウト */
  .table-wrap { margin: 10px 0 18px; }
  .article-content table { min-width: 0; display: block; }
  .article-content thead { display: none; }
  .article-content tbody { display: block; }
  .article-content tbody tr {
    display: block;
    border: 1px solid var(--border-dim);
    border-radius: 4px;
    margin-bottom: 10px;
    background: var(--bg-card);
  }
  .article-content tbody tr:nth-child(even) td { background: transparent; }
  .article-content tbody tr:hover td { background: transparent; }
  .article-content tbody td {
    display: flex;
    gap: 8px;
    border: none;
    border-bottom: 1px solid rgba(200,200,255,.08);
    padding: 6px 10px;
  }
  .article-content tbody td:last-child { border-bottom: none; }
  .article-content tbody td::before {
    content: attr(data-label);
    color: var(--text-muted);
    font-size: 11px;
    min-width: 72px;
    flex-shrink: 0;
    padding-top: 1px;
    letter-spacing: 0.5px;
  }
}