:root{
  --bg: #F2CB57;      /* 黄色 */
  --text: #733907;    /* 茶色 */
  --ink: #260B01;     /* こげ茶（アクセント） */
  --card: #fff3d1;    /* カード地 */
  --muted: color-mix(in oklab, var(--text) 65%, white);
  --ring: #d79b1f;
}
*{ box-sizing: border-box; }
html,body{ height:100%; }
body{
  margin:0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
}
.container{ width:min(1100px, 100% - 24px); margin-inline:auto; }

.site-header{ position:sticky; top:0; backdrop-filter:saturate(1.2) blur(6px); background: color-mix(in oklab, var(--bg) 90%, white); border-bottom: 2px solid var(--ring); z-index:20; }
.site-header .container{ display:flex; align-items:center; gap:16px; padding:10px 0; }
.brand{ font-weight:800; color:var(--ink); text-decoration:none; }
.crumbs{ margin-left:auto; display:flex; gap:.5rem; font-size:.9rem; }
.crumbs a{ color:var(--ink); }

.page-title{ font-size: clamp(1.4rem, 1.2rem + 1.2vw, 2rem); margin: 1rem 0 .5rem; }
.controls{ background: color-mix(in oklab, var(--bg) 70%, white); border:2px solid var(--ring); border-radius:14px; padding:10px; box-shadow: 0 2px 0 rgba(0,0,0,.08) inset; }
.controls .row{ display:grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap:10px; }
@media (min-width:720px){ .controls .row{ grid-template-columns: repeat(4, minmax(0,1fr)); } }
.control{ display:grid; gap:6px; font-size:.9rem; }
.control input,.control select{ width:100%; padding:.6rem .7rem; border-radius:10px; border:2px solid var(--ring); background:#fff8e5; color:var(--ink); }

.jump{ display:flex; flex-wrap:wrap; gap:6px; margin:12px 0; }
.jump a{ padding:.35rem .6rem; border-radius:999px; border:1px dashed var(--ring); text-decoration:none; color:var(--ink); font-size:.85rem; background:#fff8e5; }

.grid{ display:grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap:12px; margin: 12px 0 28px; }



.card{ position:relative; background:var(--card); border-radius:16px; border:2px solid var(--ring); overflow:hidden; box-shadow: 0 2px 0 rgba(0,0,0,.08) inset; }
.card__imgwrap{ aspect-ratio:1/1; display:grid; place-items:center; background:#fff; }
.card__img{ width:100%; height:100%; object-fit:contain; image-rendering: -webkit-optimize-contrast; }
.card__body{ padding:10px; display:grid; gap:4px; }
.card__title{ font-weight:700; line-height:1.2; }
.card__meta{ font-size:.85rem; color:var(--muted); display:flex; gap:8px; flex-wrap:wrap; }
.badge{ font-size:.72rem; padding:.18rem .45rem; border-radius:999px; border:1px solid var(--ring); background:#fff8e5; color:var(--ink); }
.card__flip{ position:absolute; top:8px; right:8px; font-size:.8rem; padding:.25rem .5rem; border-radius:8px; border:1px solid var(--ring); background:#fff; cursor:pointer; }
.card__open{ position:absolute; bottom:8px; right:8px; font-size:.8rem; padding:.25rem .5rem; border-radius:8px; border:1px solid var(--ring); background:#fff; cursor:pointer; }

/* === 空き枠用スタイル === */
.card--empty{ background:#fffdf3; border-style:dashed; }
.card--empty .card__imgwrap{ background:repeating-linear-gradient(45deg,#fff,#fff 10px,#fff7df 10px,#fff7df 20px); color:#b7a06a; }
.card--empty .placeholder{ font-size:clamp(20px, 10vw, 48px); font-weight:800; opacity:.7; }
.card--empty .card__body{ opacity:.75; }

.viewer{ width:min(100vw, 920px); border:none; padding:0; background:transparent; }
.viewer::backdrop{ background: rgba(0,0,0,.5); }
.viewer__content{ display:grid; grid-template-columns: 1fr; gap:10px; background:#fff; color:#333; border-radius:16px; padding:12px; }
@media (min-width:840px){ .viewer__content{ grid-template-columns: 1fr 320px; } }
.viewer__close{ position:absolute; right:8px; top:8px; border:none; background:#fff; border-radius:999px; width:34px; height:34px; box-shadow:0 1px 3px rgba(0,0,0,.2); cursor:pointer; }
.viewer__meta{ font-size:.95rem; display:grid; gap:6px; align-content:start; }
.viewer__meta dl{ margin:0; display:grid; grid-template-columns: 80px 1fr; gap:4px 10px; }
.viewer__meta dt{ color:#666; }
.viewer__meta dd{ margin:0; }
.viewer img {
  width: 100%;
  height: auto;
  max-width: none;
}

.viewer__content {
  width: 100vw;
  max-width: 100%;
  margin: 0;
  padding: 0;
}

.site-footer{ padding:20px 0 40px; border-top:2px solid var(--ring); }
.site-footer .container{ display:flex; justify-content:space-between; align-items:center; gap:10px; }
.sns a{ margin-left:12px; color:var(--ink); text-decoration:none; }