:root{--red:#c8102e;--blue:#2b6cb0;--ink:#1a1a1a;--muted:#666;--bg:#f6f5f2;--card:#fff;--line:#e3e1dc;--ok:#2f855a;--warn:#b7791f}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP",Meiryo,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
a{color:var(--blue)}
header.site{background:var(--ink);color:#fff;padding:14px 16px}
header.site .inner{max-width:1040px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;gap:12px}
header.site a{color:#fff;text-decoration:none;font-weight:700}
header.site .tag{font-size:12px;color:#ccc}
main{max-width:1040px;margin:0 auto;padding:20px 16px 60px}
footer.site{max-width:1040px;margin:0 auto;padding:20px 16px;color:var(--muted);font-size:12px;border-top:1px solid var(--line)}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;margin-bottom:16px}
h1{font-size:24px;margin:0 0 8px}
h2{font-size:18px;margin:0 0 12px}
.muted{color:var(--muted)}
.btn{display:inline-block;background:var(--red);color:#fff;border:0;border-radius:8px;padding:12px 22px;font-size:16px;font-weight:700;cursor:pointer;text-decoration:none}
.btn:disabled{background:#bbb;cursor:not-allowed}
.btn.secondary{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn.small{padding:6px 12px;font-size:13px}
.btn.ghost{background:transparent;color:var(--blue);border:1px solid var(--blue)}
.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:700}
.badge.open{background:#e6f4ea;color:var(--ok)}
.badge.presale{background:#fff4e0;color:var(--warn)}
.badge.before,.badge.closed{background:#eee;color:#555}
.grid{display:grid;gap:16px}
@media(min-width:720px){.grid.two{grid-template-columns:1fr 1fr}.grid.map{grid-template-columns:1.6fr 1fr}}
label{display:block;font-size:13px;font-weight:700;margin:10px 0 4px}
input[type=text],input[type=email],input[type=tel],input[type=password],input[type=number],input[type=datetime-local],select,textarea{width:100%;padding:10px;border:1px solid #ccc;border-radius:8px;font-size:16px}
.error{background:#fde8e8;color:#9b1c1c;padding:10px 14px;border-radius:8px;margin:10px 0}
.notice{background:#fff8e1;color:#7a5200;padding:10px 14px;border-radius:8px;margin:10px 0}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:8px 6px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:#faf9f7;font-size:12px}
/* 座席マップ */
.stage{background:var(--ink);color:#fff;text-align:center;border-radius:6px;padding:6px;font-size:12px;letter-spacing:.3em;margin-bottom:14px}
.seatmap{overflow-x:auto;padding-bottom:6px}
.row{display:flex;align-items:center;gap:4px;margin-bottom:4px}
.row .lbl{width:22px;font-size:11px;color:var(--muted);text-align:center;flex:none}
.seat{width:26px;height:26px;border-radius:6px 6px 3px 3px;border:2px solid transparent;font-size:9px;display:flex;align-items:center;justify-content:center;color:#fff;cursor:pointer;flex:none;user-select:none}
.seat.available{opacity:.85}.seat.available:hover{opacity:1;transform:scale(1.1)}
.seat.held,.seat.sold,.seat.blocked{background:#cfcfcf!important;color:#888;cursor:not-allowed}
.seat.blocked{background:#8a8a8a!important;color:#eee}
.seat.selected{border-color:#111;box-shadow:0 0 0 2px #ffd54f;transform:scale(1.15)}
.legend{display:flex;flex-wrap:wrap;gap:12px;font-size:13px;margin:10px 0}
.legend span{display:inline-flex;align-items:center;gap:6px}
.legend i{width:16px;height:16px;border-radius:4px;display:inline-block}
.sel-list{min-height:48px;font-size:14px}
.total{font-size:22px;font-weight:700;text-align:right}
/* チケット */
.ticket{border:2px dashed var(--line);border-radius:12px;padding:16px;display:flex;gap:16px;align-items:center;margin-bottom:12px;background:#fff}
.ticket img{width:150px;height:150px;flex:none}
.ticket .seatno{font-size:28px;font-weight:800}
.ticket.used{opacity:.5}
@media print{header.site,footer.site,.noprint{display:none}body{background:#fff}.ticket{page-break-inside:avoid}}
/* 管理 */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px}
.stat{background:#faf9f7;border-radius:10px;padding:12px}
.stat b{display:block;font-size:24px}
.stat small{color:var(--muted)}
.scan-result{padding:20px;border-radius:12px;font-size:20px;font-weight:700;text-align:center;margin-top:12px}
.scan-result.ok{background:#d9f5e3;color:#1f6b3f}
.scan-result.ng{background:#fde8e8;color:#9b1c1c}
.scan-result.warn{background:#fff4e0;color:#8a5a00}
#reader{width:100%;max-width:420px;margin:0 auto;border-radius:12px;overflow:hidden}
nav.admin{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
nav.admin a{padding:6px 12px;border-radius:8px;background:#fff;border:1px solid var(--line);text-decoration:none;color:var(--ink);font-size:14px}
nav.admin a.active{background:var(--ink);color:#fff}