:root{
  --bg:#f5f6f8; --card:#fff; --ink:#1c2330; --muted:#7a8394;
  --line:#e4e7ec; --accent:#2f6fed; --ok:#1f9d63; --warn:#d9822b; --bad:#d64545;
  --radius:14px; --shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--ink);
  font:15px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
button{font:inherit;cursor:pointer;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:10px;padding:7px 12px}
button:hover{border-color:#c9cfd9}
button.primary{background:var(--accent);border-color:var(--accent);color:#fff}
button.ghost{background:transparent;border-color:transparent;color:var(--muted)}
button.ghost:hover{color:var(--ink)}
button.small{padding:5px 9px;font-size:13px}
button.danger{color:var(--bad);border-color:transparent;background:transparent;padding:2px 6px}
input,select{
  font:inherit;color:var(--ink);background:#fff;border:1px solid var(--line);
  border-radius:10px;padding:7px 10px;min-width:0
}
input:focus,select:focus{outline:2px solid rgba(47,111,237,.25);border-color:var(--accent)}

.topbar{
  display:flex;align-items:center;gap:16px;padding:12px 20px;background:#fff;
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;flex-wrap:wrap
}
.brand{font-weight:700;letter-spacing:.3px}
.daynav{display:flex;align-items:center;gap:6px;margin-left:auto}
.daynav button{width:34px;padding:5px 0}
#dayInput{padding:5px 8px}
#logoutBtn{margin-left:8px}

main{max-width:1240px;margin:0 auto;padding:18px 16px 60px}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin-bottom:16px}
.card{background:var(--card);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow)}
.card .k{font-size:12px;color:var(--muted);letter-spacing:.4px}
.card .v{font-size:22px;font-weight:700;margin:4px 0 2px}
.card .sub{font-size:12px;color:var(--muted)}
.bar{height:6px;background:#eef1f5;border-radius:99px;margin-top:8px;overflow:hidden}
.bar > i{display:block;height:100%;background:var(--accent);border-radius:99px;transition:width .25s}
.bar.ok > i{background:var(--ok)}
.bar.warn > i{background:var(--warn)}
.bar.bad > i{background:var(--bad)}

.layout{display:grid;grid-template-columns:minmax(280px,1fr) minmax(320px,1.4fr);gap:16px;margin-bottom:16px}
.panel{background:var(--card);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);min-width:0}
.panel h2{font-size:15px;margin:0 0 12px}
.chart-box{position:relative;height:230px;width:100%}
.chart-box canvas{display:block;width:100%!important;height:100%!important}
.panel-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.panel-head h2{margin:0}
.panel-head input{margin-left:auto;width:140px}

.meal-picker{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.meal-picker button{padding:5px 10px;font-size:13px;border-radius:99px}
.meal-picker button.on{background:var(--accent);border-color:var(--accent);color:#fff}

.food-list{max-height:420px;overflow:auto;margin-bottom:10px}
.food-item{
  display:flex;align-items:center;gap:10px;padding:9px 4px;border-bottom:1px solid var(--line)
}
.food-item:last-child{border-bottom:0}
.food-item .name{font-weight:600;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.food-item .meta{font-size:12px;color:var(--muted)}
.food-item .add{margin-left:auto;flex:none}

.group{margin-bottom:14px}
.group h3{font-size:13px;color:var(--muted);margin:0 0 6px;font-weight:600}
.meal-row{display:flex;align-items:center;gap:10px;padding:8px 10px;border:1px solid var(--line);border-radius:10px;margin-bottom:6px}
.meal-row .nm{font-weight:600;font-size:14px}
.meal-row .sub{font-size:12px;color:var(--muted)}
.meal-row .spacer{margin-left:auto}
.serv{display:flex;align-items:center;gap:2px}
.serv button{width:26px;padding:2px 0;font-size:13px}
.serv span{min-width:30px;text-align:center;font-size:13px}
.empty{color:var(--muted);font-size:13px;padding:8px 2px}

.row-form{display:flex;flex-wrap:wrap;gap:8px;align-items:flex-end;margin-bottom:12px}
.row-form label{display:flex;flex-direction:column;gap:3px;font-size:12px;color:var(--muted)}
.row-form input{width:110px}
.row-form input[type=date]{width:150px}
.mini-list{max-height:220px;overflow:auto;font-size:13px}
.mini-list .item{display:flex;gap:10px;padding:6px 2px;border-bottom:1px solid var(--line)}
.mini-list .item span:last-child{margin-left:auto;color:var(--muted)}

.toast{
  position:fixed;left:50%;bottom:26px;transform:translate(-50%,20px);opacity:0;
  background:#1c2330;color:#fff;padding:9px 16px;border-radius:10px;font-size:14px;
  transition:.22s;pointer-events:none;z-index:99;max-width:80vw
}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.err{background:var(--bad)}

.login-page{display:grid;place-items:center;min-height:100vh;background:linear-gradient(160deg,#eef3ff,#f7f8fa)}
.login-box{width:min(92vw,340px);background:#fff;padding:28px;border-radius:18px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:10px}
.login-box h1{margin:0;font-size:22px}
.muted{color:var(--muted);margin:0}
.login-box label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted)}
.login-box input{padding:10px 12px}
.login-box button{padding:10px;background:var(--accent);border-color:var(--accent);color:#fff;margin-top:4px}
.error{color:var(--bad);font-size:13px;margin:0}

@media (max-width:900px){
  .layout{grid-template-columns:1fr}
  .cards{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:520px){
  .topbar{padding:10px 12px;gap:8px}
  main{padding:12px 10px 50px}
  .panel{padding:13px}
  .food-list{max-height:300px}
  .row-form input{width:100%}
  .row-form label{flex:1 1 45%}
  .chart-box{height:200px}
}