/* =====================================
   日本三色団子協会 共通スタイルシート
   File: style.css
   Pages: index.html / about.html / day.html / history.html / membership.html / contact.html / privacy.html / terms.html
   ===================================== */

/* ------------------------------
   CSSカスタムプロパティ（テーマ）
------------------------------ */
:root{
  /* 三色団子を想起させる配色 */
  --dango-white:#f7f3ee; /* しろ */
  --dango-pink:#f5a3b2;  /* もも */
  --dango-green:#9bc89b; /* みどり */
  --dango-brown:#5a4635; /* 焦がし茶 */

  --ink:#2b2b2b;
  --muted:#6b6b6b;
  --bg:#fffdfb;
  --surface:#ffffff;
  --border: color-mix(in oklab, var(--bg), #000 6%);
  --shadow:0 10px 30px rgba(0,0,0,.06);

  --radius:18px; 
  --radius-sm:12px;
  --maxw:1120px;
}

/* ------------------------------
   ベース
------------------------------ */
*{box-sizing:border-box}
html,body{height:100%}
html{scroll-behavior:smooth}
body{
  margin:0; 
  font-family: "Noto Sans JP", system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color:var(--ink); background:var(--bg); line-height:1.78; letter-spacing:.02em;
  text-rendering:optimizeLegibility; -webkit-font-smoothing:antialiased;
}
img{max-width:100%; height:auto;}
.container{max-width:var(--maxw); margin-inline:auto; padding: clamp(16px, 3vw, 28px);} 

/* 見出し・テキスト */
h1{font-weight:900; line-height:1.2; font-size: clamp(26px, 4vw, 40px); margin:.4em 0 .2em}
h2{font-family:"Noto Serif JP", serif; font-weight:700; letter-spacing:.02em; font-size: clamp(20px, 2.6vw, 26px); margin:0 0 8px}
h3{font-size: clamp(18px, 2.2vw, 21px); margin:18px 0 6px}
p{margin:.4em 0}
.lead{font-size: clamp(16px, 1.6vw, 18px); color:#3a3a3a}
.section-title{font-family:"Noto Serif JP", serif; font-weight:700; letter-spacing:.02em; margin:0 0 10px; font-size: clamp(22px, 3vw, 28px)}
.note{color:#5e5e5e; font-size:.95rem}

/* ユーティリティ */
.grid{display:grid; grid-template-columns: 1fr minmax(0, 760px) 1fr}
.grid > *{grid-column: 2}
.sections{padding: clamp(24px, 5vw, 54px) 0;}
.section{padding: clamp(22px, 4vw, 42px) 0}
.two-col{display:grid; grid-template-columns:repeat(12,1fr); gap: clamp(14px, 2vw, 22px)}
.col-4{grid-column: span 4}
.col-6{grid-column: span 6}
.col-12{grid-column: span 12}
@media (max-width: 960px){
  .grid{grid-template-columns: 1fr minmax(0,1fr) 1fr}
  .col-4,.col-6{grid-column: span 12}
}

/* スキップリンク */
.skip-link{position:absolute; left:-9999px; top:auto; width:1px; height:1px; overflow:hidden}
.skip-link:focus{left:16px; top:12px; width:auto; height:auto; padding:8px 12px; background:#000; color:#fff; border-radius:8px; z-index:1000}

/* ------------------------------
   ヘッダー／ナビ
------------------------------ */
header.site-header{position:sticky; top:0; z-index:50; backdrop-filter:saturate(180%) blur(8px);
  background: color-mix(in oklab, var(--bg) 85%, white 15%);
  border-bottom:1px solid color-mix(in oklab, var(--bg), #000 5%);
}
.nav{display:flex; align-items:center; gap:16px; justify-content:space-between}
.brand{display:flex; align-items:center; gap:12px; text-decoration:none; color:inherit}
.brand-title{font-weight:900; letter-spacing:.02em; font-size: clamp(16px, 2.2vw, 20px)}
.logo{display:grid; grid-auto-flow:column; gap:6px; align-items:center; padding:8px; border-radius:999px; background:var(--surface); box-shadow:var(--shadow)}
.logo span{display:inline-block; width:12px; height:12px; border-radius:999px}
.logo .w{background:var(--dango-white); outline:1px solid color-mix(in oklab, var(--ink), white 85%)}
.logo .p{background:var(--dango-pink)}
.logo .g{background:var(--dango-green)}

.nav-links{display:flex; gap:12px; align-items:center}
.nav-links a{color:inherit; text-decoration:none; font-weight:600; padding:10px 12px; border-radius:10px}
.nav-links a[aria-current="page"], .nav-links a:hover{background: color-mix(in oklab, var(--dango-white), white 55%)}
.menu-btn{display:none; background:transparent; border:0; padding:10px; border-radius:12px}
.menu-btn:focus-visible{outline:2px solid var(--dango-pink)}

@media (max-width: 840px){
  .nav-links{display:none}
  .menu-btn{display:block}
  .drawer[aria-hidden="false"]{display:block}
}

/* ドロワー */
.drawer{display:none; position:fixed; inset:0 0 auto 0; top:64px; background:rgba(255,255,255,.96); backdrop-filter: blur(8px); border-bottom:1px solid #eee}
.drawer .links{display:grid; gap:6px; padding:16px}
.drawer a{padding:12px 14px; text-decoration:none; color:inherit; border-radius:12px; font-weight:700}
.drawer a:active, .drawer a:hover{background: color-mix(in oklab, var(--dango-white), white 55%)}

/* ------------------------------
   ヒーロー／ページヘッド
------------------------------ */
.hero{padding: clamp(24px, 6vw, 60px) 0}
.page-head{background: linear-gradient(180deg, color-mix(in oklab, var(--dango-white), white 70%), transparent 70%); border-bottom:1px solid #eee}
.breadcrumb{font-size:.9rem; color:#6b625a}
.breadcrumb a{color:inherit; text-decoration:none}
.eyebrow{color:var(--muted); font-weight:700; font-size:.92rem; letter-spacing:.12em; text-transform:uppercase}

/* TOPヒーロー専用補助 */
.hero-inner{display:grid; grid-template-columns: 1.1fr .9fr; gap: clamp(16px, 4vw, 40px); align-items:center}
@media (max-width: 900px){.hero-inner{grid-template-columns: 1fr}}
.hero-card{background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); box-shadow:var(--shadow); padding:18px; display:grid; gap:10px}
.kv{aspect-ratio: 4/3; border-radius:14px; border:1px dashed #e5ded6; display:grid; place-items:center; color:#9a8e82; font-weight:700}

/* ------------------------------
   カード／パネル／ラベル
------------------------------ */
.card{background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); box-shadow:var(--shadow); padding:22px}
.card h3{margin:0 0 6px; font-size: clamp(18px, 2vw, 20px)}
.card .more{display:inline-flex; align-items:center; gap:8px; font-weight:800; text-decoration:none; margin-top:12px; color:inherit}
.card .more:hover{text-decoration:underline}

.panel{background:var(--surface); border:1px solid var(--border); border-radius:18px; box-shadow:var(--shadow); padding:18px}
.badge{display:inline-flex; align-items:center; gap:8px; padding:8px 12px; background:#fff; border:1px solid #eee; border-radius:999px; font-size:.9rem; font-weight:700; box-shadow:var(--shadow)}
.badge .dot{width:8px; height:8px; border-radius:999px; background:var(--dango-pink)}
.tag{display:inline-block; padding:.35em .7em; border:1px solid #e7e0d9; border-radius:999px; font-size:.9rem; margin-right:.35em; margin-bottom:.35em}

/* ボタン */
.btn{appearance:none; border:0; padding:12px 18px; border-radius:14px; font-weight:800; cursor:pointer; text-decoration:none; display:inline-flex; align-items:center; gap:8px}
.btn.primary{background:var(--dango-brown); color:#fff}
.btn.secondary{background:#fff; color:#222; border:1px solid #e7e0d9}
.btn:focus-visible{outline:2px solid var(--dango-pink); outline-offset:2px}
.cta-row{display:flex; gap:12px; flex-wrap:wrap; margin-top:10px}

/* ニュースリスト（TOP） */
.news{padding: clamp(16px, 5vw, 46px) 0; background:linear-gradient(180deg, transparent, color-mix(in oklab, var(--dango-white), white 75%)); border-top:1px solid #eee; border-bottom:1px solid #eee}
.news-list{display:grid; gap:12px}
.news-item{display:flex; gap:14px; align-items:center; padding:14px; background:#fff; border:1px solid #eee; border-radius:14px}
.news-item time{font-weight:800; color:#5b554d; min-width:110px}
.news-item a{font-weight:800; color:var(--ink); text-decoration:none}
.news-item a:hover{text-decoration:underline}

/* タイムライン（history） */
.timeline{position:relative; padding-left:20px}
.timeline::before{content:""; position:absolute; left:6px; top:0; bottom:0; width:2px; background:#e8e0d8}
.tl-item{position:relative; margin:14px 0; padding-left:16px}
.tl-item::before{content:""; position:absolute; left:-2px; top:8px; width:10px; height:10px; background:var(--dango-pink); border-radius:999px; box-shadow:0 0 0 3px #fff}

/* ------------------------------
   フォーム（contact）
------------------------------ */
form{display:grid; gap:14px}
.row{display:grid; grid-template-columns:repeat(12,1fr); gap:clamp(12px,2vw,18px)}
.col-6{grid-column:span 6}
.col-12{grid-column:span 12}
@media(max-width:960px){.col-6{grid-column:span 12}}
label{font-weight:800; display:block; margin-bottom:6px}
.req{color:#d04444; font-weight:900; margin-left:.3em}
input[type="text"], input[type="email"], select, textarea{width:100%; padding:12px 14px; border:1px solid #e7e0d9; border-radius:12px; background:#fff; font-size:16px}
textarea{min-height:160px; resize:vertical}
.help{color:#5e5e5e; font-size:.92rem}
.actions{display:flex; gap:10px; flex-wrap:wrap; align-items:center}
.notice{background:#fff; border:1px solid #eee; border-radius:14px; padding:12px 14px}

/* 価格表示（membership） */
.price{display:flex; align-items:baseline; gap:8px}
.price .yen{font-weight:900; font-size:1.4rem}

/* フッター */
footer{padding:36px 0; color:#665; border-top:1px solid #eee; margin-top:24px}
.foot{display:flex; gap:16px; justify-content:space-between; align-items:center; flex-wrap:wrap}
.foot a{color:inherit; text-decoration:none}
.logo-mini{display:grid; grid-auto-flow:column; gap:6px; align-items:center; padding:8px; border-radius:999px; background:var(--surface); box-shadow:var(--shadow)}
.logo-mini span{display:inline-block; width:12px; height:12px; border-radius:999px}
.logo-mini .w{background:var(--dango-white); outline:1px solid color-mix(in oklab, var(--ink), white 85%)}
.logo-mini .p{background:var(--dango-pink)}
.logo-mini .g{background:var(--dango-green)}

/* トースト（contact下書き保存など） */
.toast{position:fixed; inset:auto 16px 16px auto; background:#222; color:#fff; padding:10px 14px; border-radius:12px; opacity:0; pointer-events:none; transition:opacity .2s}
.toast.show{opacity:1}

/* ------------------------------
   プリント簡易設定
------------------------------ */
@media print{
  header.site-header, .menu-btn, .drawer, .cta-row, .toast{display:none !important}
  .container{padding:12mm 10mm}
  a{color:#000; text-decoration:underline}
}