:root{
  --bg:#f6f7f9; --card:#fff; --line:#e3e7ec; --ink:#1a2330; --muted:#7a8694;
  --primary:#2563eb; --primary-dk:#1d4ed8; --ok:#16a34a; --warn:#ea580c; --bad:#dc2626;
  --radius:10px; --shadow:0 1px 3px rgba(0,0,0,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Yu Gothic UI",sans-serif;line-height:1.5}
header{padding:14px 18px;background:#fff;border-bottom:1px solid var(--line)}
header h1{font-size:18px;margin:0}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin:14px;padding:14px}
.card h2{font-size:15px;margin:0 0 10px}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end}
label{display:flex;flex-direction:column;font-size:12px;color:var(--muted);gap:4px}
input,select,button{font-size:14px;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink)}
button{cursor:pointer}
button.primary{background:var(--primary);color:#fff;border-color:var(--primary)}
button.primary:hover{background:var(--primary-dk)}
button.big{padding:14px 18px;font-size:16px;width:100%}
.msg{font-size:13px;min-height:1.2em;margin:8px 0 0}
.msg.ok{color:var(--ok)} .msg.err{color:var(--bad)}
.muted{color:var(--muted);font-size:12px}
.hidden{display:none!important}

/* パターンリスト */
#patterns-list{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}
.pat-chip{display:flex;align-items:center;gap:6px;padding:6px 10px;background:#eef2ff;border:1px solid #c7d2fe;border-radius:999px;font-size:13px}
.pat-chip .del{background:none;border:none;color:#6b7280;padding:0;font-size:14px;cursor:pointer}
.pat-chip .del:hover{color:var(--bad)}

/* 日別グリッド */
#days-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:6px;margin-top:8px}
.day-cell{background:#fff;border:1px solid var(--line);border-radius:8px;padding:8px;cursor:pointer;text-align:center;transition:.1s;user-select:none}
.day-cell:hover{border-color:var(--primary)}
.day-cell .d-date{font-size:12px;color:var(--muted);font-weight:600}
.day-cell .d-date.sat{color:#1d4ed8}
.day-cell .d-date.sun{color:#dc2626}
.day-cell .d-val{font-size:14px;font-weight:600;margin-top:4px;min-height:1.2em}
.day-cell.off{background:#fef2f2;border-color:#fecaca}
.day-cell.off .d-val{color:#dc2626}
.day-cell.filled{background:#f0fdf4;border-color:#bbf7d0}

/* 送信ロック表示 */
.lock-notice{padding:14px;background:#fef3c7;border-radius:10px;border-left:4px solid #f59e0b}
.lock-notice .lock-title{font-size:15px;color:#92400e;margin-bottom:6px}
.lock-notice .lock-body{font-size:13px;color:#78350f;line-height:1.6}

/* モーダル */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:flex-end;justify-content:center;z-index:50}
.modal-body{background:#fff;border-radius:14px 14px 0 0;width:100%;max-width:480px;padding:18px;max-height:90vh;overflow-y:auto}
#pick-buttons{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 14px}
#pick-buttons button{background:#eef2ff;border-color:#c7d2fe}

@media (min-width:720px){
  .modal{align-items:center}
  .modal-body{border-radius:14px;max-width:520px}
}

/* ─── 管理画面 ─── */
.admin-body header.admin-header{background:#1f2937;color:#fff;display:flex;align-items:center;justify-content:space-between}
.admin-body header.admin-header h1{color:#fff;font-size:16px}
.admin-table{width:100%;border-collapse:collapse;margin-top:10px;font-size:13px}
.admin-table th,.admin-table td{border:1px solid var(--line);padding:8px;text-align:left;vertical-align:middle}
.admin-table th{background:#f3f4f6;font-size:12px}
.badge{display:inline-block;padding:3px 8px;border-radius:999px;font-size:11px;font-weight:600}
.bg-ok{background:#d1fae5;color:#065f46}
.bg-muted{background:#e5e7eb;color:#374151}
.btn-unlock,.btn-edit{padding:5px 10px;border-radius:6px;cursor:pointer;font-size:12px;font-weight:600;margin-right:4px}
.btn-unlock{background:#fef3c7;border:1px solid #fcd34d;color:#92400e}
.btn-edit{background:#dbeafe;border:1px solid #93c5fd;color:#1e3a8a}
.btn-unlock:hover{background:#fde68a} .btn-edit:hover{background:#bfdbfe}
.edit-row{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.edit-label{min-width:74px;font-size:12px;color:var(--muted);font-weight:600;font-family:monospace}
.edit-label.sat{color:#1d4ed8} .edit-label.sun{color:#dc2626}
.edit-row input{flex:1;font-size:14px}

/* 管理画面リンク（メインフォーム側） */
.admin-link{display:inline-block;margin-left:12px;font-size:12px;color:#1f2937;background:#f3f4f6;padding:4px 10px;border-radius:999px;text-decoration:none}
.admin-link:hover{background:#e5e7eb}