/* ===== LP実装集 共通スタイル (limebill風ライトテーマ) =====
   注: :root のCSS変数はデモカード(.preview内)が参照するため
   旧ダークテーマの値のまま維持。ページのガワは下のリテラル色で描画する。 */
:root {
  --bg: #0a0a0f;
  --bg2: #101018;
  --card: #14141d;
  --card-hover: #191924;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8e8ef;
  --muted: #9a9aac;
  --accent: #6366f1;
  --accent2: #a855f7;
  --grad: linear-gradient(135deg, #6366f1, #a855f7);
  --radius: 14px;

  /* ライトテーマ用パレット */
  --page-bg: #dce0e9;
  --panel: #0e0e11;
  --lime: #cdf102;
  --ink: #141419;
  --ink-muted: #6b6c78;
  --line: #e7e8ee;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--page-bg);
  color: var(--ink);
  font-family: "Inter", "Noto Sans JP", -apple-system, sans-serif;
  line-height: 1.7;
  min-height: 100vh;
}

/* ===== ナビゲーション (フローティング黒パネル) ===== */
.site-header {
  position: sticky;
  top: 10px;
  z-index: 1000;
  max-width: 1220px;
  margin: 10px auto 0;
  padding: 0 14px;
  background: transparent;
  border-bottom: none;
}
.site-header .inner {
  background: var(--panel);
  border-radius: 18px;
  box-shadow: 0 12px 32px rgba(15, 15, 25, 0.22);
  max-width: none;
  margin: 0;
  padding: 0 12px 0 22px;
  display: flex;
  align-items: center;
  gap: 20px;
  height: 62px;
}
.site-logo {
  font-weight: 800;
  font-size: 16.5px;
  text-decoration: none;
  color: #fff;
  white-space: nowrap;
  letter-spacing: 0.02em;
}
.site-logo span { color: var(--lime); -webkit-text-fill-color: var(--lime); }
.site-nav {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.site-nav::-webkit-scrollbar { display: none; }
.site-nav a {
  color: #9d9eab;
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: 12px;
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
}
.site-nav a:hover { color: #fff; background: rgba(255, 255, 255, 0.09); }
.site-nav a.active {
  color: var(--panel);
  background: var(--lime);
}

/* ===== サイドメニュー (common.jsが生成) ===== */
body { padding-left: 248px; }
.site-nav { display: none; }  /* 旧トップナビはサイドメニューに置き換え */
.side-nav-panel {
  position: fixed;
  top: 14px; left: 14px; bottom: 14px;
  width: 218px;
  z-index: 1200;
  background: var(--panel);
  border-radius: 20px;
  box-shadow: 0 14px 40px rgba(15, 15, 25, 0.28);
  padding: 20px 12px 18px;
  overflow-y: auto;
  scrollbar-width: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.side-nav-panel::-webkit-scrollbar { display: none; }
.side-logo {
  color: #fff;
  font-weight: 800;
  font-size: 17px;
  text-decoration: none;
  padding: 4px 10px 0;
  letter-spacing: 0.02em;
}
.side-logo span { color: var(--lime); }
.side-total {
  color: #7c7d8a;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 10px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 6px;
}
.side-group {
  color: #71727e;
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 14px 10px 6px;
}
.side-link {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #b9bac4;
  text-decoration: none;
  font-size: 12.5px;
  font-weight: 700;
  padding: 8px 10px;
  border-radius: 11px;
  transition: background 0.18s, color 0.18s;
}
.side-link .material-symbols-outlined { font-size: 17px; opacity: 0.85; }
.side-link .side-label { flex: 1; }
.side-link .side-count {
  font-size: 10px;
  font-weight: 700;
  color: #8a8b98;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 999px;
  padding: 1px 7px;
}
.side-link:hover { color: #fff; background: rgba(255, 255, 255, 0.07); }
.side-link.active { color: var(--panel); background: var(--lime); }
.side-link.active .material-symbols-outlined { opacity: 1; }
.side-link.active .side-count { color: var(--panel); background: rgba(0, 0, 0, 0.12); }
.side-toggle {
  display: none;
  margin-left: auto;
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: #fff;
  width: 40px; height: 40px;
  border-radius: 12px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.side-toggle .material-symbols-outlined { font-size: 22px; }
.side-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1150;
  background: rgba(10, 10, 15, 0.45);
  backdrop-filter: blur(2px);
}
@media (min-width: 1101px) {
  .site-header { display: none; }  /* デスクトップはサイドメニューに集約 */
}
@media (max-width: 1100px) {
  body { padding-left: 0; }
  .side-nav-panel {
    transform: translateX(-115%);
    transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
  }
  body.side-open .side-nav-panel { transform: translateX(0); }
  body.side-open .side-backdrop { display: block; }
  .side-toggle { display: flex; }
}

/* ===== ページヘッダー ===== */
.page-hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 52px 20px 8px;
}
.page-hero h1 {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.page-hero h1 em {
  font-style: normal;
  background: var(--lime);
  color: var(--panel);
  -webkit-text-fill-color: var(--panel);
  padding: 2px 14px;
  border-radius: 12px;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}
.page-hero p { color: var(--ink-muted); margin-top: 12px; font-size: 14.5px; max-width: 640px; }

/* ===== カテゴリフィルタ ===== */
.filter-bar {
  max-width: 1200px;
  margin: 24px auto 0;
  padding: 0 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.filter-btn {
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 700;
  color: #5f606d;
  background: #fff;
  border: 1px solid #dcdde6;
  border-radius: 999px;
  padding: 7px 16px;
  cursor: pointer;
  transition: all 0.2s;
}
.filter-btn:hover { color: var(--panel); border-color: var(--panel); }
.filter-btn.active {
  color: var(--panel);
  background: var(--lime);
  border-color: transparent;
}
.filter-btn .n { opacity: 0.6; font-weight: 600; margin-left: 4px; font-size: 11px; }

/* ===== グリッドとカード ===== */
.grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 30px 20px 90px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 22px;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.card:hover {
  border-color: #c6c8d4;
  box-shadow: 0 14px 34px rgba(20, 20, 35, 0.10);
}
.preview {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 190px;
  padding: 28px 20px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(99, 102, 241, 0.07), transparent 60%),
    var(--bg2);
}
.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 16px;
  border-top: 1px solid #f0f0f4;
  background: #fff;
}
.card-title { font-size: 13.5px; font-weight: 700; color: var(--ink); }
.card-tag { font-size: 11px; color: #8a8b98; display: block; font-weight: 500; }
.copy-btn {
  flex-shrink: 0;
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  color: #4a4b56;
  background: #f4f4f7;
  border: 1px solid #e3e4ea;
  border-radius: 9px;
  padding: 6px 13px;
  cursor: pointer;
  transition: all 0.2s;
}
.copy-btn:hover { color: #fff; background: var(--panel); border-color: var(--panel); }
.copy-btn.copied {
  color: var(--panel);
  background: var(--lime);
  border-color: var(--lime);
}

/* ===== フッター ===== */
.site-footer {
  border-top: 1px solid #ccd0dc;
  padding: 30px 20px;
  text-align: center;
  color: #85869a;
  font-size: 12.5px;
}

@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .page-hero { padding-top: 34px; }
  .site-header { top: 8px; padding: 0 8px; }
  .site-header .inner { height: 56px; border-radius: 14px; padding-left: 16px; }
}