:root{
  --bg:#f4f6f9; --card:#ffffff; --ink:#1f2937; --muted:#6b7280;
  --line:#e5e7eb; --pri:#2563eb; --pri-d:#1d4ed8; --ok:#16a34a; --ok-bg:#dcfce7;
  --warn:#d97706; --warn-bg:#fef3c7; --danger:#dc2626; --danger-bg:#fee2e2;
  --prov:#7c3aed; --prov-bg:#ede9fe; --shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.04);
}
*{box-sizing:border-box}
body{margin:0;font-family:"Segoe UI","Hiragino Kaku Gothic ProN","Meiryo",sans-serif;
  background:var(--bg);color:var(--ink);font-size:14px;line-height:1.5}
small{font-size:.8em}
button{font-family:inherit;cursor:pointer}
a{color:var(--pri);text-decoration:none}

/* ---- Topbar ---- */
.topbar{display:flex;justify-content:space-between;align-items:center;
  background:#0f172a;color:#fff;padding:10px 20px;position:sticky;top:0;z-index:50}
.brand{display:flex;align-items:center;gap:10px;cursor:pointer}
.logo{background:var(--pri);border-radius:8px;padding:4px 9px;font-weight:700;font-size:15px}
.brand-title{font-weight:600;font-size:16px}
.brand-title small{color:#94a3b8;font-weight:400;margin-left:4px}
.topbar-info{display:flex;align-items:center;gap:12px;font-size:13px;color:#cbd5e1}
.pill{padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600}

/* ---- Tabs ---- */
.tabs{display:flex;gap:2px;background:#fff;padding:0 16px;border-bottom:1px solid var(--line);
  position:sticky;top:48px;z-index:40;overflow-x:auto}
.tabs button{background:none;border:none;padding:13px 16px;font-size:14px;color:var(--muted);
  border-bottom:3px solid transparent;white-space:nowrap;font-weight:500}
.tabs button.active{color:var(--pri);border-bottom-color:var(--pri);font-weight:700}
.tabs button:hover{color:var(--ink)}
.tab-badge{background:var(--danger);color:#fff;border-radius:999px;padding:0 6px;font-size:11px;margin-left:5px}
.tab-badge.muted{background:#94a3b8}

/* ---- Layout ---- */
main{padding:20px;max-width:1400px;margin:0 auto}
.row{display:flex;gap:14px;flex-wrap:wrap}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}
.card-pad{padding:16px}
h2.page-title{margin:0 0 16px;font-size:20px}
.section-title{font-size:13px;font-weight:700;color:var(--muted);text-transform:uppercase;
  letter-spacing:.04em;margin:18px 0 8px}

/* ---- Stat cards ---- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:20px}
.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;box-shadow:var(--shadow);cursor:pointer;transition:.1s}
.stat:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,0,0,.1)}
.stat .num{font-size:28px;font-weight:700}
.stat .lbl{color:var(--muted);font-size:13px;margin-top:2px}
.stat.ok .num{color:var(--ok)} .stat.warn .num{color:var(--warn)}
.stat.danger .num{color:var(--danger)} .stat.prov .num{color:var(--prov)}

/* ---- Toolbar ---- */
.toolbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:14px}
.toolbar input[type=text],.toolbar select{padding:8px 10px;border:1px solid var(--line);border-radius:8px;font-size:14px}
.toolbar input[type=text]{min-width:220px}
.spacer{flex:1}

/* ---- Buttons ---- */
.btn{padding:8px 14px;border:1px solid var(--line);border-radius:8px;background:#fff;font-size:14px;font-weight:500}
.btn:hover{background:#f8fafc}
.btn.pri{background:var(--pri);color:#fff;border-color:var(--pri)}
.btn.pri:hover{background:var(--pri-d)}
.btn.ok{background:var(--ok);color:#fff;border-color:var(--ok)}
.btn.danger{background:#fff;color:var(--danger);border-color:var(--danger)}
.btn.danger:hover{background:var(--danger-bg)}
.btn.sm{padding:4px 9px;font-size:12.5px;border-radius:6px}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* ---- Table ---- */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:var(--shadow)}
table{border-collapse:collapse;width:100%;font-size:13.5px}
th,td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
th{background:#f8fafc;color:var(--muted);font-weight:600;position:sticky;top:0;font-size:12.5px}
tbody tr:hover{background:#f8fafc}
td.num,th.num{text-align:right}
.clickable{cursor:pointer}
.site-link{font-weight:600;color:var(--pri);cursor:pointer}
.muted{color:var(--muted)}
.sub{color:var(--muted);font-size:12px}

/* ---- Badges ---- */
.badge{display:inline-block;padding:2px 8px;border-radius:6px;font-size:11.5px;font-weight:700}
.b-paid{background:var(--ok-bg);color:var(--ok)}
.b-unpaid{background:#f1f5f9;color:var(--muted)}
.b-overdue{background:var(--danger-bg);color:var(--danger)}
.b-badge{background:var(--danger);color:#fff}
.b-prov{background:var(--prov-bg);color:var(--prov)}
.b-type{background:#e0f2fe;color:#0369a1}
.b-link{background:#fef3c7;color:#b45309}
.b-closed{background:#f1f5f9;color:#64748b}
.chk{width:18px;height:18px;cursor:pointer;accent-color:var(--ok)}

/* ---- Forms ---- */
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 16px}
.form-grid .full{grid-column:1/-1}
.field label{display:block;font-size:12.5px;color:var(--muted);margin-bottom:4px;font-weight:600}
.field input,.field select,.field textarea{width:100%;padding:8px 10px;border:1px solid var(--line);
  border-radius:8px;font-size:14px;font-family:inherit}
.field textarea{min-height:80px;resize:vertical}
.radio-group{display:flex;gap:8px}
.radio-group label{display:flex;align-items:center;gap:6px;padding:7px 12px;border:1px solid var(--line);
  border-radius:8px;cursor:pointer;font-size:13.5px;color:var(--ink)}
.radio-group label.sel{border-color:var(--pri);background:#eff6ff;color:var(--pri);font-weight:600}

/* ---- Detail ---- */
.detail-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:16px;flex-wrap:wrap}
.detail-cols{display:grid;grid-template-columns:1.3fr 1fr;gap:16px}
@media(max-width:900px){.detail-cols{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}}
.kv{display:grid;grid-template-columns:120px 1fr;gap:6px 10px;font-size:13.5px}
.kv dt{color:var(--muted)}
.kv dd{margin:0;word-break:break-all}

/* ---- Modal ---- */
.modal-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.5);display:flex;
  align-items:center;justify-content:center;z-index:100;padding:20px}
.modal{background:#fff;border-radius:14px;max-width:680px;width:100%;max-height:90vh;
  display:flex;flex-direction:column;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line)}
.modal-head h3{margin:0;font-size:17px}
.modal-body{padding:20px;overflow:auto}
.modal-foot{padding:14px 20px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:8px}
.x{background:none;border:none;font-size:26px;color:var(--muted);line-height:1}
.hidden{display:none!important}

/* ---- Toast ---- */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(80px);
  background:#0f172a;color:#fff;padding:12px 20px;border-radius:10px;opacity:0;transition:.25s;z-index:200;box-shadow:var(--shadow)}
.toast.show{transform:translateX(-50%) translateY(0);opacity:1}
.toast.err{background:var(--danger)}
.toast.ok{background:var(--ok)}

.empty{text-align:center;color:var(--muted);padding:50px 20px}
.loading{text-align:center;color:var(--muted);padding:40px}
.preview-box{background:#f8fafc;border:1px solid var(--line);border-radius:8px;padding:14px;
  white-space:pre-wrap;font-size:13px;max-height:340px;overflow:auto;font-family:"Meiryo",monospace}
.hint{background:#eff6ff;border:1px solid #bfdbfe;color:#1e40af;border-radius:8px;padding:10px 14px;font-size:13px;margin-bottom:14px}
.warn-box{background:var(--warn-bg);border:1px solid #fde68a;color:#92400e;border-radius:8px;padding:10px 14px;font-size:13px;margin-bottom:14px}
.amount-edit{width:90px;text-align:right;padding:4px 6px;border:1px solid var(--line);border-radius:6px;font-size:13px}
.tag-owner{font-size:11px;color:var(--muted);cursor:pointer}
.tag-owner:hover{color:var(--pri)}