:root{
  --paper:#FAF7F0;
  --surface:#FFFFFF;
  --surface-2:#F0EDE2;
  --ink:#2B2A22;
  --ink-dim:#7A765F;
  --line:#E4DFCB;
  --accent:#5B8C4A;
  --accent-ink:#FFFFFF;
  --warn:#C97E3D;
  --warn-bg:#F7E8D2;
  --danger:#B3543E;
  --ok-bg:#EAF3E1;
  --radius:12px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark){
  :root{
    --paper:#181A14;
    --surface:#20231A;
    --surface-2:#282C1F;
    --ink:#EDE9D8;
    --ink-dim:#A6A186;
    --line:#3A3D2D;
    --accent:#6FBF63;
    --accent-ink:#132010;
    --warn:#E3A24F;
    --warn-bg:#3A2C16;
    --danger:#E17A63;
    --ok-bg:#22301E;
  }
}

*{box-sizing:border-box;}
html,body{margin:0; padding:0;}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font);
  line-height:1.45;
}
button, input, select, textarea{font-family:inherit; font-size:inherit; color:inherit;}
h1,h2,h3{text-wrap:balance;}

/* ---------- topbar ---------- */
.topbar{
  position:sticky; top:0; z-index:10;
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between;
  gap:10px;
  padding:12px 18px;
  background:var(--surface);
  border-bottom:1px solid var(--line);
}
.brand{font-size:19px; font-weight:700; letter-spacing:-.2px; display:flex; align-items:center; gap:8px;}
.tabs{display:flex; gap:4px; background:var(--surface-2); padding:4px; border-radius:999px;}
.tab-btn{
  border:none; background:transparent; padding:8px 16px; border-radius:999px;
  cursor:pointer; font-weight:600; color:var(--ink-dim);
}
.tab-btn.active{background:var(--accent); color:var(--accent-ink);}
.tab-btn:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible{
  outline:2px solid var(--accent); outline-offset:2px;
}

/* ---------- layout ---------- */
.app{max-width:720px; margin:0 auto; padding:20px 16px 80px;}
.section-title{
  font-size:13px; text-transform:uppercase; letter-spacing:0.05em;
  color:var(--ink-dim); margin:28px 0 10px;
}
.section-title:first-child{margin-top:0;}
.section-title-row{
  display:flex; align-items:baseline; justify-content:space-between; gap:10px;
  margin:28px 0 10px; flex-wrap:wrap;
}
.section-title-row .section-title{margin:0;}
.refresh-row{display:flex; align-items:center; gap:8px;}
.last-updated{font-size:11.5px; color:var(--ink-dim);}

/* ---------- summary cards ---------- */
.stat-row{display:grid; grid-template-columns:repeat(auto-fit,minmax(140px,1fr)); gap:10px;}
.stat-card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding:14px 16px;
}
.stat-card .num{font-size:28px; font-weight:800; letter-spacing:-.5px; font-variant-numeric:tabular-nums; color:var(--accent);}
.stat-card .lbl{font-size:12.5px; color:var(--ink-dim); margin-top:2px;}
.stat-card.warn .num{color:var(--warn);}

/* ---------- cards / lists ---------- */
.card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding:14px 16px; margin-bottom:10px;
}
.card-row{display:flex; align-items:flex-start; justify-content:space-between; gap:12px;}
.item-title{font-weight:600; margin:0;}
.item-meta{font-size:12.5px; color:var(--ink-dim); margin-top:3px;}
.item-note{font-size:13.5px; margin-top:6px; color:var(--ink);}
.empty{
  text-align:center; padding:36px 20px; color:var(--ink-dim);
  border:1px dashed var(--line); border-radius:var(--radius);
}

/* ---------- badges / pills ---------- */
.badge{
  display:inline-block; font-size:11.5px; font-weight:700; letter-spacing:0.02em;
  padding:2px 9px; border-radius:999px; text-transform:uppercase;
}
.badge.aktif{background:var(--ok-bg); color:var(--accent);}
.badge.panen{background:var(--surface-2); color:var(--ink-dim);}
.badge.gagal{background:var(--warn-bg); color:var(--danger);}
.badge.overdue{background:var(--warn-bg); color:var(--warn);}
.tag{
  font-size:11px; font-weight:700; text-transform:uppercase; letter-spacing:0.03em;
  color:var(--ink-dim); background:var(--surface-2); padding:2px 8px; border-radius:6px;
}

/* ---------- forms ---------- */
.form{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding:16px; margin-bottom:16px; display:grid; gap:10px;
}
.form-row{display:grid; gap:10px; grid-template-columns:1fr 1fr;}
.field{display:flex; flex-direction:column; gap:4px;}
.field label{font-size:12px; color:var(--ink-dim); font-weight:600;}
.field input, .field select, .field textarea{
  border:1px solid var(--line); border-radius:8px; padding:9px 10px; background:var(--paper); color:var(--ink);
}
.field textarea{resize:vertical; min-height:60px;}

/* ---------- buttons ---------- */
.btn{
  border:1px solid var(--line); background:var(--surface); color:var(--ink);
  padding:9px 14px; border-radius:8px; cursor:pointer; font-weight:600;
}
.btn.primary{background:var(--accent); border-color:var(--accent); color:var(--accent-ink);}
.btn.ghost{background:transparent; border-color:transparent; color:var(--ink-dim);}
.btn.danger{color:var(--danger); border-color:var(--danger);}
.btn.small{padding:5px 10px; font-size:12.5px;}
.btn:disabled{opacity:0.5; cursor:not-allowed;}
.actions{display:flex; gap:8px; flex-wrap:wrap;}
.check{display:flex; align-items:center; gap:8px; cursor:pointer;}
.check input{width:18px; height:18px;}

/* ---------- sensor / IoT panel ---------- */
.sensor-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:10px;}
.sensor-card{background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:12px 14px;}
.sensor-card .val{font-size:22px; font-weight:800; letter-spacing:-.4px; font-variant-numeric:tabular-nums;}
.sensor-card .lbl{font-size:12px; color:var(--ink-dim); text-transform:uppercase; letter-spacing:0.03em;}
.sensor-card .ts{font-size:11px; color:var(--ink-dim); margin-top:4px; font-family:var(--mono);}

.code-block{
  background:var(--surface-2); border:1px solid var(--line); border-radius:8px;
  padding:12px 14px; font-family:var(--mono); font-size:12px; overflow-x:auto;
  white-space:pre;
}
.link-btn{background:none; border:none; color:var(--accent); font-weight:700; cursor:pointer; padding:0;}

table{width:100%; border-collapse:collapse; font-size:13px;}
th, td{text-align:left; padding:7px 8px; border-bottom:1px solid var(--line);}
th{color:var(--ink-dim); font-size:11.5px; text-transform:uppercase; letter-spacing:0.03em;}
td.num{font-family:var(--mono); font-variant-numeric:tabular-nums;}
.table-wrap{overflow-x:auto; border:1px solid var(--line); border-radius:var(--radius); background:var(--surface);}
.table-wrap table{margin:0;}
.table-wrap th, .table-wrap td{padding:9px 12px;}

/* ---------- detail view ---------- */
.back-link{background:none; border:none; color:var(--ink-dim); font-weight:600; cursor:pointer; padding:0 0 12px; display:inline-block;}
.detail-header{display:flex; justify-content:space-between; align-items:flex-start; gap:12px; margin-bottom:16px;}
.detail-header h2{margin:0 0 4px;}
.timeline{display:flex; flex-direction:column; gap:8px;}
.timeline .card{margin-bottom:0;}

/* ---------- toast ---------- */
.toast{
  position:fixed; bottom:20px; left:50%; transform:translateX(-50%);
  background:var(--ink); color:var(--paper); padding:10px 18px; border-radius:999px;
  font-size:13.5px; font-weight:600; box-shadow:0 4px 16px rgba(0,0,0,0.25);
  z-index:50;
}
.toast.err{background:var(--danger);}

@media (max-width:520px){
  .form-row{grid-template-columns:1fr;}
  .brand span{display:none;}
}