/* Light professional theme (HEC‑RAS-ish), Noto Sans Regular */
:root{
  --ui-scale: 1.10; /* default UI zoom (user can change in the UI) */
  --bg: #fbfcfe;
  --panel: #ffffff;
  --border: #e5e7eb;
  --muted: #6b7280;
  --text: #111827;
  --primary: #2E7D32;
  --danger: #B91C1C;
  --water: #1d6fd8; /* HEC‑RAS-ish blue */
  --ground: #f59e0b;
}

html, body{
  margin:0;
  padding:0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Noto Sans', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  font-size: calc(14px * var(--ui-scale));
  line-height: 1.35;
}

a{ color: var(--primary); text-decoration:none; }
a:hover{ text-decoration:underline; }

.container{
  width: 100%;
  padding: 14px 16px 24px 16px;
  box-sizing: border-box;
}

.header{
  margin-bottom: 12px;
  display:flex;
  gap: 12px;
  align-items: flex-start;
}
.header h1{
  margin: 0 0 6px 0;
  font-size: 22px;
  letter-spacing: -0.2px;
}
.header .sub{
  color: var(--muted);
  font-size: 13px;
}

.layout{
  display: grid;
  grid-template-columns: minmax(560px, 40%) 1fr; /* left expands a bit on wide screens */
  gap: 16px;
  align-items: start;
}

/* Independent scrolling for left and right columns */
.pane{
  max-height: calc(100vh - 210px);
  overflow: auto;
  padding-right: 6px;
}

@media (max-width: 1100px){
  .layout{ grid-template-columns: 1fr; }
}

.card{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 12px;
  box-shadow: 0 1px 0 rgba(17,24,39,0.02);
}

.card h2{
  margin: 0 0 10px 0;
  font-size: 15px;
}
.card h3{
  margin: 12px 0 8px 0;
  font-size: 13px;
  color: #0f172a;
}

.manual{
  background: linear-gradient(180deg, #ffffff, #fafbff);
}

details.manual details summary,
details.manual summary{
  cursor: pointer;
}
details.manual summary{
  font-weight: 600;
}

.grid2{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 12px;
}
.grid3{
  display:grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px 12px;
}

.field label{
  display:block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 4px;
}
.field input, .field select{
  width: 100%;
  box-sizing: border-box;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  outline: none;
  font-size: 14px;
  background: #fff;
}
.field input:focus, .field select:focus{
  border-color: rgba(46,125,50,0.6);
  box-shadow: 0 0 0 3px rgba(46,125,50,0.12);
}

.row{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.btn{
  border: 1px solid var(--border);
  background: #fff;
  padding: 9px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
}
.btn:hover{ border-color: #cfd5de; }
.btn:active{ transform: translateY(1px); }

.btn.primary{
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn.primary:hover{ filter: brightness(0.98); }

.btn.danger{
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}

.badge{
  font-size: 12px;
  color: var(--muted);
}

.alert{
  border-radius: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  background: #fafafa;
  color: var(--text);
  margin-top: 10px;
}
.alert.error{
  border-color: rgba(185,28,28,0.35);
  background: rgba(185,28,28,0.06);
  color: #7f1d1d;
}
.alert.ok{
  border-color: rgba(46,125,50,0.30);
  background: rgba(46,125,50,0.07);
  color: #14532d;
}

.tableWrap{
  overflow:auto;
  border: 1px solid var(--border);
  border-radius: 12px;
}

table{
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}
thead th{
  position: sticky;
  top: 0;
  background: #f8fafc;
  z-index: 1;
  font-size: 12px;
  color: #334155;
  text-align: center;
  vertical-align: middle;
  padding: 10px 10px;
  border-bottom: 1px solid var(--border);
}
tbody td{
  padding: 6px 8px;
  text-align: center;
  vertical-align: middle;
  border-bottom: 1px solid #f1f5f9;
}
tbody tr:hover td{
  background: #fbfdff;
}

td.num{
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.cell-input{
  width: 100%;
  box-sizing: border-box;
  padding: 8px 9px;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  font-size: 14px;
  text-align: center;
}
.cell-input:focus{
  border-color: rgba(29,111,216,0.55);
  box-shadow: 0 0 0 3px rgba(29,111,216,0.12);
  outline: none;
}

.sectionTitle{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 10px;
}

.plotCard{
  padding: 10px;
}

.plotBox{
  width:100%;
  height: 340px;
}
.plotBox.tall{
  height: 380px;
}

.metrics{
  display:flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 8px 0 8px 0;
}
.metric{
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  min-width: 120px;
}
.metric .k{
  color: var(--muted);
  font-size: 12px;
}
.metric .v{
  font-weight: 700;
  font-size: 14px;
  margin-top: 2px;
}

small.help{
  color: var(--muted);
  display:block;
  margin-top:6px;
}


/* Center table cell content */
.tableWrap table td, .tableWrap table th { text-align:center; vertical-align:middle; }

.pageHeader{position:sticky; top:0; z-index:50; background:rgba(251,252,254,.92); backdrop-filter: blur(6px);}
.headerRight{margin-left:auto; display:flex; align-items:center; gap:12px;}
.field.compact label{font-size:12px; margin-bottom:4px;}
.field.compact select{min-width:92px;}


.boundaryHeader{
  font-weight: 600;
  font-size: 13px;
  color: #0f172a;
}