:root{
  --blue:#2563eb; --blue-d:#1d4ed8; --ink:#0f172a; --slate:#64748b;
  --line:#e2e8f0; --bg:#f1f5f9; --soft:#f8fafc;
}
*{box-sizing:border-box}
body{margin:0;font-family:"Hiragino Kaku Gothic ProN","Yu Gothic",system-ui,sans-serif;color:var(--ink);background:linear-gradient(135deg,#f8fafc,#eff6ff)}
a{color:inherit;text-decoration:none}
.hidden{display:none!important}

/* ---------- ログイン ---------- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px}
.login-card{background:#fff;border-radius:16px;box-shadow:0 14px 40px rgba(15,23,42,.12);width:100%;max-width:400px;overflow:hidden}
.login-head{background:linear-gradient(135deg,var(--blue),var(--blue-d));color:#fff;padding:22px 24px;font-size:19px;font-weight:700;display:flex;align-items:center;gap:8px}
.login-body{padding:26px}
.login-body p.lead{font-size:13px;color:var(--slate);margin:0 0 16px}

/* ---------- レイアウト ---------- */
.layout{display:flex;min-height:100vh}
.sidebar{width:248px;background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column;flex-shrink:0}
.sb-head{padding:18px 16px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px}
.sb-icon{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--blue),var(--blue-d));display:flex;align-items:center;justify-content:center;font-size:18px}
.sb-head h2{font-size:16px;margin:0}
.sb-head p{font-size:11px;color:var(--slate);margin:0}
.sb-nav{padding:12px 8px;flex:1}
.sb-label{font-size:11px;font-weight:600;color:#94a3b8;text-transform:uppercase;padding:8px 12px}
.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;font-size:14px;font-weight:600;color:#334155;cursor:pointer;margin-bottom:3px;border:none;background:none;width:100%;text-align:left;font-family:inherit}
.nav-item:hover{background:#eff6ff;color:var(--blue-d)}
.nav-item.active{background:#eff6ff;color:var(--blue-d)}
.sb-foot{padding:12px 8px;border-top:1px solid var(--line)}
.nav-item.logout:hover{background:#fef2f2;color:#dc2626}

.main{flex:1;overflow:auto}
.page{max-width:1100px;margin:0 auto;padding:32px 28px}
.page-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap;margin-bottom:24px}
.page-head h1{font-size:26px;margin:0 0 4px;display:flex;align-items:center;gap:8px}
.page-head .sub{color:var(--slate);font-size:14px}
.head-actions{display:flex;gap:10px}

/* ---------- ボタン ---------- */
.btn{padding:10px 18px;border-radius:9px;font-size:14px;font-weight:600;cursor:pointer;border:1px solid transparent;font-family:inherit;display:inline-flex;align-items:center;gap:7px}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-d)}
.btn-primary:disabled{opacity:.6;cursor:default}
.btn-outline{background:#fff;border-color:#cbd5e1;color:#334155}
.btn-outline:hover{background:var(--soft)}
.btn-danger{background:#fff;border-color:#fecaca;color:#dc2626}
.btn-danger:hover{background:#fef2f2}
.btn-sm{padding:7px 13px;font-size:13px}

/* ---------- 統計 ---------- */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}
.stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;display:flex;justify-content:space-between;align-items:center}
.stat .label{font-size:13px;color:var(--slate)}
.stat .value{font-size:30px;font-weight:800;margin-top:4px}
.stat .ico{font-size:22px;opacity:.5}

/* ---------- カード/イベント一覧 ---------- */
.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}
.panel h2{font-size:18px;margin:0 0 16px}
.event-card{border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:14px}
.event-top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;flex-wrap:wrap}
.event-title{font-size:16px;font-weight:700;display:flex;align-items:center;gap:8px}
.badge{font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px}
.badge.on{background:#0f172a;color:#fff}
.badge.off{background:#e2e8f0;color:#64748b}
.event-meta{font-size:13px;color:var(--slate);margin-top:5px}
.event-actions{display:flex;gap:8px}
.url-box{margin-top:12px;background:var(--soft);border:1px solid var(--line);border-radius:9px;padding:10px 12px}
.url-box .ul{font-size:11px;color:var(--slate);margin-bottom:3px}
.url-box .uv{font-size:13px;font-family:ui-monospace,monospace;word-break:break-all;color:#334155}

/* ---------- フォーム ---------- */
.form-section{margin-bottom:22px}
.form-section h3{font-size:15px;margin:0 0 2px}
.form-section .desc{font-size:13px;color:var(--slate);margin:0 0 14px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;color:#334155;margin-bottom:6px}
.field .req{color:#dc2626}
.field input,.field select,.field textarea{width:100%;padding:11px 13px;border:1px solid #cbd5e1;border-radius:9px;font-size:14px;font-family:inherit;outline:none;background:#fff}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.field textarea{resize:vertical;min-height:84px}
.field .note{font-size:12px;color:var(--slate);margin-top:6px}
.img-row{display:flex;align-items:center;gap:14px}
.img-prev{width:120px;height:64px;border:1px solid var(--line);border-radius:9px;background:var(--soft);display:flex;align-items:center;justify-content:center;overflow:hidden;flex-shrink:0}
.img-prev img{max-width:100%;max-height:100%;object-fit:contain}
.form-foot{display:flex;justify-content:flex-end;gap:10px;margin-top:8px}

/* ---------- テーブル ---------- */
table{width:100%;border-collapse:collapse;font-size:14px}
th{text-align:left;color:var(--slate);font-weight:600;font-size:12px;padding:10px 12px;border-bottom:2px solid var(--line)}
td{padding:12px;border-bottom:1px solid var(--line)}
tr:last-child td{border-bottom:none}
.empty{text-align:center;color:var(--slate);padding:40px 0}

/* ---------- 詳細ヘッダ ---------- */
.detail-grid{display:grid;grid-template-columns:2fr 1fr;gap:20px;margin-bottom:24px}
.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 24px;font-size:14px;margin:14px 0}
.kv .k{color:var(--slate)}
.detail-actions{display:flex;flex-direction:column;gap:10px}
.detail-actions .btn{justify-content:flex-start;width:100%}
.back-link{display:inline-flex;align-items:center;gap:6px;color:var(--slate);font-size:14px;cursor:pointer;margin-bottom:18px;background:none;border:none;font-family:inherit}
.back-link:hover{color:var(--ink)}

.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#0f172a;color:#fff;padding:11px 20px;border-radius:10px;font-size:14px;box-shadow:0 8px 24px rgba(0,0,0,.2);opacity:0;transition:.25s;z-index:50}
.toast.show{opacity:1}
.form-err{color:#dc2626;font-size:13px;min-height:18px}

@media (max-width:820px){
  .grid2,.stats,.detail-grid{grid-template-columns:1fr}
  .sidebar{width:auto;position:static}
  .layout{flex-direction:column}
  .sb-nav{display:flex;flex-wrap:wrap;gap:4px}
}