/* ==========================================================================
   ぬりえサイト(仮称) - 共通スタイルシート
   モックアップ(~/nurie-site/mockup/ index.html / category.html / nurie.html)
   のトークン・構造を踏襲し1ファイルに集約。
   ========================================================================== */
:root{
  --bg:#FAFAF7;
  --text:#444444;
  --header-green:#6BAF7B;
  --heading-green:#5B9E6B;
  --card-bg:#FFFAF0;
  --footer-bg:#555555;
  --pill-green:#82C395;
  --pill-blue:#7CB5EC;
  --pill-orange:#FF9E79;
  --pill-pink:#F48FB1;
  --pill-purple:#B39DDB;
  --pill-teal:#4DB6AC;
}
*{box-sizing:border-box;margin:0;padding:0;}
body{
  font-family:system-ui,-apple-system,"Hiragino Sans","Noto Sans JP",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--heading-green);text-decoration:underline;text-underline-offset:2px;}
a:hover{color:#3F8B54;}
h1,h2,h3{color:var(--heading-green);font-weight:700;line-height:1.4;}
.container{max-width:1080px;margin:0 auto;padding:0 16px;}
@media (min-width:1080px){.container{padding:0 24px;}}

/* header */
.site-header{position:sticky;top:0;z-index:100;background:var(--header-green);color:#fff;padding:8px 0 10px;box-shadow:0 2px 8px rgba(0,0,0,.12);}
.header-top{display:flex;justify-content:center;align-items:center;}
.logo{font-weight:700;font-size:.95rem;color:#fff;white-space:nowrap;}
.logo a{color:#fff;text-decoration:none;}
.logo .tentative{font-size:.75em;font-weight:400;opacity:.85;margin-left:2px;}

.header-title{text-align:center;margin:6px 0 8px;}
.header-title-text{font-size:.78rem;font-weight:700;color:#fff;line-height:1.5;margin:0;}
.header-subtitle-en{font-size:.62rem;font-weight:400;color:rgba(255,255,255,.85);margin-top:2px;}
@media (min-width:768px){
  .header-title-text{font-size:1rem;}
  .header-subtitle-en{font-size:.75rem;}
}

.category-pills{list-style:none;display:flex;flex-wrap:wrap;gap:5px;justify-content:center;}
.pill{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:25px;color:#fff;font-size:.68rem;font-weight:700;text-decoration:none;white-space:nowrap;}
.pill-green{background:var(--pill-green);}
.pill-blue{background:var(--pill-blue);}
.pill-orange{background:var(--pill-orange);}
.pill-pink{background:var(--pill-pink);}
.pill-purple{background:var(--pill-purple);}
.pill-teal{background:var(--pill-teal);}
.pill-icon{width:20px;height:20px;border-radius:50%;background:#fff;object-fit:cover;flex-shrink:0;}
.pill-prep{font-size:.62em;font-weight:400;opacity:.9;margin-left:1px;}
.pill.current{box-shadow:inset 0 0 0 2px rgba(255,255,255,.95),0 0 0 2px rgba(0,0,0,.16);}
@media (min-width:768px){.pill{font-size:.82rem;padding:6px 15px;}.pill-icon{width:22px;height:22px;}}

/* buttons */
.btn{display:inline-block;padding:.75em 1.6em;border-radius:25px;font-weight:700;text-decoration:none;text-align:center;font-size:.85rem;border:2px solid transparent;}
.btn-primary{background:var(--header-green);color:#fff;box-shadow:0 3px 0 color-mix(in srgb, var(--header-green) 70%, black),0 6px 14px rgba(0,0,0,.12);transition:background-color .15s ease,transform .15s ease,box-shadow .15s ease;}
.btn-primary:hover{background:color-mix(in srgb, var(--header-green) 88%, white);transform:translateY(-1px);box-shadow:0 4px 0 color-mix(in srgb, var(--header-green) 70%, black),0 8px 16px rgba(0,0,0,.14);}
.btn-primary:active{transform:translateY(2px);box-shadow:0 1px 0 color-mix(in srgb, var(--header-green) 70%, black),0 3px 8px rgba(0,0,0,.10);}
.btn-secondary{background:#fff;color:var(--header-green);border-color:var(--header-green);box-shadow:0 3px 0 var(--header-green),0 6px 14px rgba(0,0,0,.08);transition:background-color .15s ease,transform .15s ease,box-shadow .15s ease;}
.btn-secondary:hover{background:#F0FAF2;transform:translateY(-1px);box-shadow:0 4px 0 var(--header-green),0 8px 16px rgba(0,0,0,.10);}
.btn-secondary:active{transform:translateY(2px);box-shadow:0 1px 0 var(--header-green),0 3px 8px rgba(0,0,0,.08);}
@media (prefers-reduced-motion: reduce){.btn-primary,.btn-secondary{transition:none;}}
.btn-block{display:block;width:100%;}
.btn-sm{font-size:.75rem;padding:.55em 1em;}
.btn-large{font-size:.88rem;padding:.8em 1em;}
.btn-medium{font-size:.76rem;padding:.7em .9em;}
.btn-icon-inline{display:inline-flex;align-items:center;justify-content:center;gap:8px;}
.btn-icon-chip{width:22px;height:22px;border-radius:50%;background:#fff;object-fit:cover;flex-shrink:0;}

/* cards */
.card{background:var(--card-bg);border-radius:20px;border:2.8px solid transparent;box-shadow:0 4px 12px rgba(0,0,0,.08);overflow:hidden;}
.card-green{border-color:var(--pill-green);}
.card-blue{border-color:var(--pill-blue);}
.card-orange{border-color:var(--pill-orange);}
.card-pink{border-color:var(--pill-pink);}
.card-purple{border-color:var(--pill-purple);}
.card-teal{border-color:var(--pill-teal);}

/* badges */
.badge{display:inline-block;padding:3px 10px;border-radius:25px;font-size:.68rem;font-weight:700;}
.badge-easy{background:#E3F3E7;color:#3F8B54;}
.badge-normal{background:#E3EEFB;color:#3D74B5;}
.badge-detailed{background:#F3E9F9;color:#7C4FA0;}
.meta-tag{font-size:.68rem;background:#F0EFE9;color:#666;padding:4px 10px;border-radius:25px;}

/* breadcrumb */
.breadcrumb{font-size:.72rem;color:#777;margin:16px 0 12px;}
.breadcrumb a{color:var(--heading-green);}
.breadcrumb .sep{margin:0 4px;color:#aaa;}

main{display:block;}
.page-title{font-size:1.15rem;margin-bottom:10px;}
.lead-text{font-size:.85rem;color:#555;margin-bottom:20px;}

.section{margin-top:40px;}
.section-title{font-size:1.1rem;margin-bottom:4px;}
.section-sub{font-size:.8rem;color:#666;margin-bottom:16px;}

/* feature hero (TOP: 今月のおすすめ) */
.feature-hero{margin-top:24px;}
.feature-card{padding:20px;text-align:center;}
.feature-card h2{font-size:1.15rem;margin-bottom:6px;}
.feature-desc{font-size:.85rem;margin-bottom:16px;color:#555;}
.feature-thumbs{display:flex;gap:10px;justify-content:center;}
.feature-thumbs a{width:30%;max-width:120px;display:block;}
.feature-thumbs img{width:100%;border-radius:12px;border:1px solid #eee;background:#fff;object-fit:contain;aspect-ratio:336/480;}

/* thumbnail grid (新着ぬりえ / カテゴリ一覧 / 関連ぬりえ) */
.grid-new{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
@media (min-width:768px){.grid-new{grid-template-columns:repeat(3,1fr);gap:18px;}}
.thumb-card img{width:100%;aspect-ratio:336/480;object-fit:contain;background:#fff;border-bottom:1px solid #f0ece0;}
.thumb-card-body{padding:10px 12px 14px;}
.thumb-title{font-size:.8rem;font-weight:700;color:var(--text);margin-bottom:8px;}
.thumb-meta{display:flex;justify-content:space-between;align-items:center;font-size:.66rem;color:#888;gap:6px;}
.thumb-diff{margin-bottom:10px;}

/* category grid (カテゴリから探す / 公開中のジャンルを見る) */
.grid-category{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
@media (min-width:768px){.grid-category{grid-template-columns:repeat(4,1fr);gap:16px;}}
.category-card{text-decoration:none;color:inherit;display:block;}
.category-card-thumb{width:100%;aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;overflow:hidden;background:#fff;}
.category-card-thumb img{width:100%;height:100%;object-fit:contain;}
.category-card-thumb.no-image{flex-direction:column;gap:8px;}
.category-card-thumb.tint-pink{background:color-mix(in srgb, var(--pill-pink) 30%, #fff);}
.category-card-thumb.tint-purple{background:color-mix(in srgb, var(--pill-purple) 30%, #fff);}
.category-card-thumb.tint-teal{background:color-mix(in srgb, var(--pill-teal) 30%, #fff);}
.category-card-thumb.tint-blue{background:color-mix(in srgb, var(--pill-blue) 30%, #fff);}
.category-card-thumb img.category-icon-chip{width:64px;height:64px;border-radius:50%;background:#fff;object-fit:cover;box-shadow:0 2px 6px rgba(0,0,0,.08);}
.prep-label{font-size:.62rem;font-weight:700;padding:2px 10px;border-radius:25px;background:rgba(255,255,255,.9);color:#666;}
.category-card-body{padding:10px 12px 14px;}
.category-card-name{display:flex;align-items:center;gap:6px;font-size:.85rem;font-weight:700;margin-bottom:4px;color:var(--text);}
.cardname-icon{width:18px;height:18px;border-radius:50%;background:#fff;object-fit:cover;flex-shrink:0;}
.category-card-desc{font-size:.68rem;color:#777;}

/* prep hero (準備中カテゴリページ) */
.prep-card{padding:56px 20px;text-align:center;}
.prep-icon-chip{width:88px;height:88px;border-radius:50%;background:#fff;object-fit:cover;box-shadow:0 2px 8px rgba(0,0,0,.1);margin:0 auto 18px;}
.prep-text{font-size:.88rem;color:#555;}

/* about / usage card */
.about-card{padding:20px;}
.about-card h2{font-size:1rem;margin-bottom:8px;}
.about-card p{font-size:.82rem;color:#555;}
#usage{scroll-margin-top:110px;}

/* nurie(1枚)ページ: プレビュー + DL */
.fv-section{margin-bottom:20px;}
.preview-wrap{text-align:center;background:var(--card-bg);border:2.8px solid var(--pill-green);border-radius:20px;padding:12px;box-shadow:0 4px 12px rgba(0,0,0,.08);}
.preview-wrap img{margin:0 auto;max-height:34vh;width:auto;max-width:100%;object-fit:contain;}
.dl-buttons{display:flex;gap:8px;justify-content:center;margin-top:12px;flex-wrap:nowrap;}
.dl-buttons a{flex:1 1 0;white-space:nowrap;}

.meta-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:16px 0;}
.nurie-desc{font-size:.85rem;color:#555;margin-bottom:28px;}

/* ぬりあがりイメージ(shibaのみ) */
.sample-section{margin:28px 0;}
.sample-section h2{font-size:1rem;margin-bottom:10px;}

/* 印刷のコツ */
.print-tips{margin:28px 0;font-size:.85rem;color:#555;}

/* 関連ぬりえ */
.related-section{margin-top:36px;}
.related-section h2{font-size:1rem;margin-bottom:12px;}

.back-link-wrap{text-align:center;margin:32px 0;font-size:.85rem;}

/* 他ジャンルへの横リンク(カテゴリページ下部) */
.other-genres{margin-top:48px;}

/* footer */
.site-footer{background:var(--footer-bg);color:#fff;margin-top:48px;padding:32px 0 24px;}
.footer-links{list-style:none;display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:center;margin-bottom:16px;}
.footer-links a{color:#fff;font-size:.78rem;text-decoration:underline;}
.footer-usage{text-align:center;font-size:.72rem;color:rgba(255,255,255,.85);max-width:640px;margin:0 auto 16px;line-height:1.7;}
.footer-copyright{text-align:center;font-size:.68rem;color:rgba(255,255,255,.6);}