/* ============ Tokens ============ */
:root{
  --ink:#1c2a3f;
  --ink-soft:#52607a;
  --paper:#f6f3ec;
  --panel:#ffffff;
  --line:#e2ddd0;
  --line-soft:#ece8dd;
  --teal:#1c7d76;
  --teal-dark:#125a55;
  --teal-tint:#e3f1ef;
  --amber:#cf7a31;
  --amber-tint:#fbecdb;
  --rose:#b5453d;
  --rose-tint:#f8e4e1;
  --sage:#4f7a45;
  --sage-tint:#e7f1e2;
  --radius-sm:6px;
  --radius:12px;
  --radius-lg:18px;
  --shadow:0 1px 2px rgba(28,42,63,.06), 0 8px 24px -12px rgba(28,42,63,.18);
  --font-display:Georgia, 'Iowan Old Style', 'Palatino Linotype', serif;
  --font-body:-apple-system, 'Segoe UI', Roboto, system-ui, sans-serif;
  --font-mono:ui-monospace, 'SF Mono', 'Roboto Mono', 'Courier New', monospace;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  -webkit-font-smoothing:antialiased;
  line-height:1.5;
  /* Prevent bounce on mobile */
  overscroll-behavior-y: contain;
}
body::before{
  content:"";
  position:fixed; inset:0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(28,42,63,.05) 1px, transparent 0);
  background-size:22px 22px;
  pointer-events:none;
  z-index:0;
}
.app{position:relative; z-index:1; max-width:980px; margin:0 auto; padding:18px 16px 64px;}

/* ============ Page loader ============ */
.page-loader{
  position:fixed; inset:0; background:var(--paper); z-index:9999;
  display:flex; align-items:center; justify-content:center;
  transition:opacity .4s ease, visibility .4s ease;
}
.page-loader.hidden{opacity:0; visibility:hidden; pointer-events:none;}
.loader-inner{text-align:center; width:220px;}
.loader-mark{
  width:52px; height:52px; margin:0 auto 14px; border-radius:14px;
  background:var(--ink); color:#fff; display:flex; align-items:center; justify-content:center;
  font-family:var(--font-display); font-weight:700; font-size:18px;
}
.loader-title{font-family:var(--font-display); font-weight:600; font-size:16px; margin-bottom:14px; color:var(--ink);}
.loader-bar{height:4px; border-radius:4px; background:var(--line-soft); overflow:hidden;}
.loader-bar-fill{height:100%; width:4%; background:var(--teal); border-radius:4px; transition:width .25s ease;}
.loader-status{margin-top:10px; font-family:var(--font-mono); font-size:11px; color:var(--ink-soft);}

/* ============ Header ============ */
.accent-bar{height:4px; background:linear-gradient(90deg, var(--teal) 0%, var(--amber) 50%, var(--rose) 100%); border-radius:0 0 4px 4px; margin:0 4px;}
.masthead{padding:18px 4px 16px; border-bottom:1px solid var(--line);}
.eyebrow{
  font-family:var(--font-mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase;
  color:var(--teal-dark); margin:0 0 6px;
}
.masthead h1{
  font-family:var(--font-display); font-weight:600; font-size:clamp(26px,5vw,36px);
  margin:0 0 6px; letter-spacing:-.01em;
}
.masthead p{margin:0; color:var(--ink-soft); font-size:14.5px; max-width:62ch;}

/* ============ Tabs ============ */
.tabbar{
  display:flex; gap:6px; margin:18px 0 20px; padding:4px;
  background:var(--panel); border:1px solid var(--line); border-radius:999px;
  box-shadow:var(--shadow);
}
.tabbar button{
  flex:1; appearance:none; border:none; background:transparent; cursor:pointer;
  font-family:var(--font-body); font-weight:600; font-size:13.5px; color:var(--ink-soft);
  padding:11px 14px; border-radius:999px; transition:.15s ease;
}
.tabbar button.active{background:var(--ink); color:#fff;}
.tabbar button:not(.active):hover{background:var(--paper); color:var(--ink);}
.tabbar button:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible{
  outline:2px solid var(--teal); outline-offset:2px;
}

.panel{display:none;}
.panel.active{display:block; animation:fade .25s ease;}
@keyframes fade{from{opacity:0; transform:translateY(4px);} to{opacity:1; transform:none;}}

/* ============ Cards ============ */
.card{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:20px; margin-bottom:18px; box-shadow:var(--shadow);
}
.card h2{
  font-family:var(--font-display); font-size:19px; font-weight:600; margin:0 0 4px;
}
.card .sub{color:var(--ink-soft); font-size:13px; margin:0 0 16px;}
.card-row{display:flex; gap:10px; align-items:center; flex-wrap:wrap;}
.card-head-row{display:flex; align-items:baseline; justify-content:space-between; gap:10px; flex-wrap:wrap;}

/* ============ Buttons & inputs ============ */
button.primary, .btn{
  font-family:var(--font-body); font-weight:600; font-size:13.5px; cursor:pointer;
  border-radius:999px; padding:10px 18px; border:1px solid var(--ink);
  background:var(--ink); color:#fff; transition:.15s ease;
}
button.primary:hover, .btn:hover{background:var(--teal-dark); border-color:var(--teal-dark);}
button.ghost{
  font-family:var(--font-body); font-weight:600; font-size:13.5px; cursor:pointer;
  border-radius:999px; padding:10px 16px; border:1px solid var(--line);
  background:transparent; color:var(--ink-soft);
}
button.ghost:hover{border-color:var(--ink-soft); color:var(--ink);}
button.icon-btn{
  border:1px solid var(--line); background:#fff; color:var(--rose); border-radius:var(--radius-sm);
  width:30px; height:30px; cursor:pointer; font-size:14px; line-height:1;
}
button.icon-btn:hover{background:var(--rose-tint); border-color:var(--rose);}
button.icon-btn.chart{color:var(--teal);}
button.icon-btn.chart:hover{background:var(--teal-tint); border-color:var(--teal);}
label{font-size:12.5px; font-weight:600; color:var(--ink-soft); display:block; margin-bottom:5px;}
input[type=text], input[type=number], select, textarea{
  font-family:var(--font-body); font-size:14px; padding:9px 11px; border-radius:var(--radius-sm);
  border:1px solid var(--line); background:#fdfcfa; color:var(--ink); width:100%;
}
textarea{resize:vertical; min-height:90px; font-family:var(--font-mono); font-size:12.5px;}
input:disabled, select:disabled{background:#f1efe9; color:#9aa3b5;}
.field{min-width:120px;}
.field.grow{flex:1;}

/* Upload dropzone */
.dropzone{
  border:1.5px dashed var(--line); border-radius:var(--radius); padding:22px;
  text-align:center; cursor:pointer; transition:.15s ease; background:#fdfcfa;
}
.dropzone:hover, .dropzone.drag{border-color:var(--teal); background:var(--teal-tint);}
.dropzone p{margin:4px 0; font-size:13.5px; color:var(--ink-soft);}
.dropzone .dz-title{font-weight:600; color:var(--ink); font-size:14.5px;}

/* ============ Tables ============ */
.table-wrap{overflow-x:auto; border:1px solid var(--line); border-radius:var(--radius); margin-top:14px;}
table{width:100%; border-collapse:collapse; font-size:13.5px; min-width:560px;}
thead th{
  text-align:left; font-family:var(--font-mono); font-size:11px; letter-spacing:.06em;
  text-transform:uppercase; color:var(--ink-soft); background:var(--paper);
  padding:10px 12px; border-bottom:1px solid var(--line); white-space:nowrap;
}
thead th.sortable{cursor:pointer; user-select:none;}
thead th.sortable:hover{color:var(--ink);}
tbody td{padding:9px 12px; border-bottom:1px solid var(--line-soft); vertical-align:middle;}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover{background:#fbfaf7;}
td.num, th.num{font-family:var(--font-mono); text-align:right;}
td input[type=text], td input[type=number]{padding:6px 8px; font-size:13px;}
.rank-pill{
  font-family:var(--font-mono); font-weight:600; font-size:12.5px; min-width:28px; text-align:center;
  display:inline-block; padding:2px 8px; border-radius:999px; background:var(--paper); border:1px solid var(--line);
}

/* ============ Ruler / centile gauge — signature element ============ */
.ruler{position:relative; width:140px; height:10px; border-radius:6px;
  background:linear-gradient(90deg, var(--rose) 0%, var(--rose) 3%, var(--amber) 3%, var(--amber) 15%, var(--sage-tint) 15%, var(--sage) 35%, var(--sage) 65%, var(--sage-tint) 85%, var(--amber) 85%, var(--amber) 97%, var(--rose) 97%, var(--rose) 100%);
  opacity:.85;
}
.ruler .marker{
  position:absolute; top:-4px; width:3px; height:18px; background:var(--ink);
  border-radius:2px; transform:translateX(-1.5px);
  box-shadow:0 0 0 2px #fff;
}
.ruler-wrap{display:flex; align-items:center; gap:10px;}
.ruler-wrap.align-end{justify-content:flex-end;}
.ruler-val{font-family:var(--font-mono); font-size:12.5px; font-weight:600; min-width:46px;}

/* ============ Badges ============ */
.badge{
  font-family:var(--font-mono); font-size:11px; font-weight:600; letter-spacing:.02em;
  padding:4px 9px; border-radius:999px; white-space:nowrap; display:inline-block;
}
.badge.normal{background:var(--sage-tint); color:var(--sage);}
.badge.watch{background:var(--amber-tint); color:var(--amber);}
.badge.flag{background:var(--rose-tint); color:var(--rose);}
.badge.muted{background:var(--paper); color:var(--ink-soft);}

/* ============ Stat strip ============ */
.stats{display:grid; grid-template-columns:repeat(auto-fit,minmax(110px,1fr)); gap:10px; margin-top:14px;}
.stat{background:var(--paper); border:1px solid var(--line-soft); border-radius:var(--radius); padding:10px 12px;}
.stat .k{font-family:var(--font-mono); font-size:10.5px; text-transform:uppercase; letter-spacing:.06em; color:var(--ink-soft);}
.stat .v{font-family:var(--font-display); font-size:21px; font-weight:600; margin-top:2px;}
.insight{margin-top:12px; font-size:13.5px; color:var(--ink); background:var(--teal-tint); border:1px solid #cfe6e2; border-radius:var(--radius); padding:10px 14px;}

/* ============ Misc ============ */
.note{
  background:var(--teal-tint); border:1px solid #cfe6e2; border-radius:var(--radius);
  padding:12px 14px; font-size:13px; color:var(--teal-dark); margin-top:14px;
}
.note.warn{background:var(--amber-tint); border-color:#efd3ac; color:#8a5318;}
.empty{padding:40px 24px; text-align:center; color:var(--ink-soft); font-size:13.5px; border:1.5px dashed var(--line); border-radius:var(--radius-lg); background:#fdfcfa;}
.empty .empty-icon{font-size:26px; display:block; margin-bottom:8px; opacity:.6;}
.divider{height:1px; background:var(--line); margin:18px 0;}
.legend{display:flex; gap:14px; flex-wrap:wrap; font-size:12.5px; color:var(--ink-soft); margin-top:10px;}
.legend span{display:inline-flex; align-items:center; gap:6px;}
.dot{width:9px; height:9px; border-radius:50%; display:inline-block;}
.chart-card .canvas-box{position:relative; height:280px; margin-top:4px;}
.chart-card .canvas-box canvas{position:absolute; inset:0;}

/* Zebra striping + sticky header for long rosters */
.table-wrap{max-height:560px; overflow-y:auto;}
tbody tr:nth-child(even){background:#fbfaf7;}
tbody tr:hover{background:#f3efe4;}
thead th{position:sticky; top:0; z-index:2;}

/* Print */
@media print{
  body::before{display:none;}
  .page-loader, .tabbar, .no-print, footer.app-footer, .accent-bar{display:none !important;}
  .panel{display:none !important;}
  .panel.active{display:block !important;}
  .card{box-shadow:none; border:1px solid #ccc;}
  .stats, .insight, .legend{break-inside:avoid;}
  thead{display:table-header-group;}
  tbody tr{break-inside:avoid;}
  .table-wrap{max-height:none !important; overflow:visible !important; border:none;}
  .app{max-width:100%;}
}
footer.app-footer{margin-top:30px; padding-top:16px; border-top:1px solid var(--line); font-size:12px; color:var(--ink-soft);}

/* ============ Branding modal ============ */
.modal-overlay{
  display:none; position:fixed; inset:0; background:rgba(28,42,63,.45);
  z-index:1000; align-items:center; justify-content:center; padding:20px;
}
.modal-box{
  background:var(--panel); border-radius:var(--radius-lg); padding:24px;
  width:100%; max-width:420px; max-height:88vh; overflow-y:auto;
  box-shadow:0 20px 60px -10px rgba(28,42,63,.4);
}
.modal-box h3{font-family:var(--font-display); margin:0 0 4px; font-size:18px; color:var(--ink);}
.modal-box .sub{margin:0 0 4px;}

/* ============ PDF export options row ============ */
.pdf-options-row{
  margin-top:10px; padding-top:12px; border-top:1px dashed var(--line);
  align-items:center; gap:18px;
}
.checkbox-field{
  display:inline-flex; align-items:center; gap:7px; font-size:13px; color:var(--ink-soft);
  cursor:pointer; user-select:none;
}
.checkbox-field input[type=checkbox]{width:auto; padding:0; cursor:pointer;}
.checkbox-field input[type=checkbox]:disabled{cursor:not-allowed; opacity:.55;}

/* ============ Grade band editor rows ============ */
.grade-band-row{
  display:flex; align-items:center; gap:8px; background:#fff;
  border:1px solid var(--line); border-radius:var(--radius-sm); padding:7px 9px;
}
.grade-band-row input[type=text]{width:90px; padding:6px 8px; font-size:13px;}
.grade-band-row input[type=number]{width:70px; padding:6px 8px; font-size:13px;}
.grade-band-row .grade-band-meta{font-size:12px; color:var(--ink-soft); flex:1;}
.grade-band-row button.icon-btn{width:26px; height:26px; font-size:12px;}

.col-toggle-btn{margin-left:auto;}
.col-picker{
  margin-top:10px; padding:14px; background:var(--paper); border:1px solid var(--line-soft);
  border-radius:var(--radius); animation:fade .15s ease;
}
.col-picker-grid{
  display:grid; grid-template-columns:repeat(auto-fill,minmax(130px,1fr)); gap:10px 16px;
}

@media (max-width:560px){
  .ruler{width:96px;}
  table{min-width:480px;}
}