:root{
  --bg:#f5f6f8; --card:#fff; --line:#e2e5ea; --ink:#1f2733; --muted:#6b7480;
  --brand:#1f6feb; --brand-d:#1550b3; --accent:#0d9488; --red:#dc2626; --blue:#2563eb;
  --shadow:0 1px 3px rgba(20,30,50,.08),0 1px 2px rgba(20,30,50,.04);
  --r:10px;
}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:system-ui,-apple-system,"Hiragino Kaku Gothic ProN","Noto Sans JP",Meiryo,sans-serif;
  background:var(--bg);color:var(--ink);font-size:15px;line-height:1.5;-webkit-text-size-adjust:100%}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}

/* topbar */
.topbar{display:flex;align-items:center;gap:12px;background:#0f1b2d;color:#fff;padding:10px 16px;flex-wrap:wrap;position:sticky;top:0;z-index:20}
.topbar .brand a{color:#fff;font-weight:700;font-size:18px}
.topbar .mainnav{display:flex;gap:4px;flex:1;flex-wrap:wrap}
.topbar .mainnav a{color:#c7d2e0;padding:7px 12px;border-radius:8px;font-size:14px}
.topbar .mainnav a:hover{background:#1c2c44;text-decoration:none;color:#fff}
.topbar .mainnav a.on{background:var(--brand);color:#fff}
.userbox{display:flex;align-items:center;gap:10px;font-size:13px;color:#aeb9c8}
.userbox .logout{color:#aeb9c8;border:1px solid #33425b;padding:5px 10px;border-radius:8px}
.userbox .logout:hover{background:#1c2c44;color:#fff;text-decoration:none}
.navtoggle{display:none;background:none;border:1px solid #33425b;color:#fff;font-size:18px;border-radius:8px;padding:4px 10px;cursor:pointer}

.container{max-width:1100px;margin:20px auto;padding:0 16px}
h1{font-size:20px;margin:0 0 16px}
h2{font-size:16px;margin:24px 0 10px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:16px;margin-bottom:18px}
.muted{color:var(--muted)}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.spacer{flex:1}

/* controls */
.btn{display:inline-block;background:var(--brand);color:#fff;border:none;border-radius:8px;padding:9px 16px;font-size:14px;cursor:pointer;font-weight:600}
.btn:hover{background:var(--brand-d);text-decoration:none;color:#fff}
.btn.sec{background:#eef1f5;color:var(--ink)}
.btn.sec:hover{background:#e2e6ec}
select,input[type=text],input[type=number],input[type=password]{
  font-size:16px;padding:8px 10px;border:1px solid #cbd2dc;border-radius:8px;background:#fff;color:var(--ink);max-width:100%}
label{font-size:13px;color:var(--muted);display:block;margin-bottom:3px}

/* tables */
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--r);border:1px solid var(--line)}
table{border-collapse:collapse;width:100%;background:#fff;font-size:14px}
th,td{border-bottom:1px solid var(--line);padding:8px 10px;text-align:right;white-space:nowrap}
th{background:#f0f3f7;color:#42505f;font-weight:600;position:sticky;top:0}
td.l,th.l{text-align:left}
tr:hover td{background:#f8fafc}
tr.sat td{background:#eef4ff}
tr.sun td{background:#fff0f0}
tr.total td{background:#f2f5f9;font-weight:700;border-top:2px solid #cdd5df}
.num{font-variant-numeric:tabular-nums}
.pos{color:var(--blue)}.neg{color:var(--red)}

/* month grid picker */
.monthgrid{display:grid;grid-template-columns:repeat(13,1fr);gap:2px;font-size:12px;overflow-x:auto}
.monthgrid a,.monthgrid span{padding:4px 2px;text-align:center;border-radius:5px;display:block}
.monthgrid a:hover{background:#e8f0fe;text-decoration:none}
.monthgrid .yr{color:var(--muted);font-weight:600;text-align:right;padding-right:6px}
.monthgrid a.cur{background:var(--brand);color:#fff}

/* login */
.login-wrap{max-width:360px;margin:8vh auto}
.login-wrap .card{padding:28px}
.login-wrap h1{text-align:center}
.login-wrap label{margin-top:12px}
.login-wrap input{width:100%}
.err{background:#fdecec;color:#b42318;border:1px solid #f6c9c4;padding:10px 12px;border-radius:8px;margin-bottom:12px;font-size:14px}
.ok{background:#eaf7ee;color:#1a7a37;border:1px solid #b8e2c4;padding:10px 12px;border-radius:8px;margin-bottom:12px;font-size:14px}

/* input form grid */
.formgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.field label{margin-bottom:4px}
.field input{width:100%}
.section-t{font-weight:700;color:#42505f;margin:18px 0 6px;border-left:4px solid var(--brand);padding-left:8px}

.chartcard{background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:14px 16px 6px;margin-bottom:18px}
.chartcard h3{margin:0 0 8px;font-size:15px}
.chartbox{position:relative;height:300px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.stat{display:flex;gap:16px;flex-wrap:wrap}
.stat .kpi{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:12px 16px;box-shadow:var(--shadow);min-width:140px}
.stat .kpi .v{font-size:22px;font-weight:700}
.stat .kpi .k{font-size:12px;color:var(--muted)}

@media(max-width:760px){
  .topbar{gap:8px}
  .navtoggle{display:block;order:3}
  .topbar .mainnav{display:none;flex-basis:100%;flex-direction:column}
  body.navopen .topbar .mainnav{display:flex}
  .userbox{order:2;margin-left:auto}
  .grid2{grid-template-columns:1fr}
  .chartbox{height:260px}
}