:root {
  --blue: #2563eb; --blue-dark: #1d4ed8; --ink: #0f172a; --muted: #64748b;
  --bg: #f0f2f5; --card: #ffffff; --border: #e2e8f0; --soft: #f8fafc;
  /* division / grade semantics (good → poor) */
  --d1: #15803d; --d2: #22c55e; --d3: #eab308; --d4: #f97316; --d0: #dc2626; --dabs: #94a3b8;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--ink); line-height: 1.5; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.site-header { background: linear-gradient(135deg, #1a365d 0%, var(--blue) 100%); color: #fff; }
.hdr-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; gap: 1rem; padding: 0.8rem 1.25rem; flex-wrap: wrap; }
.brand { color: #fff; font-weight: 800; font-size: 1.15rem; letter-spacing: -0.01em; }
.brand span { opacity: 0.8; font-weight: 600; }
.hdr-nav { display: flex; gap: 0.25rem; margin-left: 0.5rem; flex-wrap: wrap; }
.hdr-nav a { color: rgba(255,255,255,0.9); padding: 0.35rem 0.7rem; border-radius: 7px; font-size: 0.85rem; font-weight: 600; }
.hdr-nav a:hover, .hdr-nav a.active { background: rgba(255,255,255,0.16); text-decoration: none; }
.hdr-tools { margin-left: auto; display: flex; align-items: center; gap: 0.5rem; }
#exam-switcher select { background: rgba(255,255,255,0.14); color: #fff; border: 1px solid rgba(255,255,255,0.35); border-radius: 6px; padding: 4px 7px; font-size: 0.8rem; cursor: pointer; max-width: 220px; }
#exam-switcher option { color: #000; }
/* Year segmented control (shown when all exams share one level) */
.year-switch { display: inline-flex; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.3); border-radius: 8px; padding: 2px; gap: 2px; }
.year-switch button { border: none; background: transparent; color: rgba(255,255,255,0.85); font-weight: 700; font-size: 0.8rem; padding: 3px 10px; border-radius: 6px; cursor: pointer; font-variant-numeric: tabular-nums; }
.year-switch button:hover { background: rgba(255,255,255,0.14); color: #fff; }
.year-switch button.active { background: #fff; color: #1a365d; }
.lang-toggle { background: rgba(255,255,255,0.14); color: #fff; border: 1px solid rgba(255,255,255,0.35); border-radius: 6px; padding: 4px 9px; font-size: 0.8rem; font-weight: 700; cursor: pointer; }
.lang-toggle:hover { background: rgba(255,255,255,0.26); }

/* Layout */
.container { max-width: 1200px; margin: 0 auto; padding: 1.25rem; }
.subhead { padding: 1rem 1.25rem 0; max-width: 1200px; margin: 0 auto; }
.subhead h1 { font-size: 1.35rem; }
.subhead p { color: var(--muted); font-size: 0.9rem; }

/* KPI tiles */
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 0.75rem; margin-bottom: 1.25rem; }
.kpi { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1rem 1.1rem; }
.kpi .num { font-size: 1.6rem; font-weight: 800; color: var(--blue); letter-spacing: -0.02em; }
.kpi .num.good { color: var(--d1); }
.kpi .label { font-size: 0.72rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 600; margin-top: 0.15rem; }
.kpi .sub { font-size: 0.75rem; color: var(--muted); margin-top: 0.2rem; }

/* Cards */
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 1.1rem 1.25rem; margin-bottom: 1.25rem; }
.card h2 { font-size: 1rem; margin-bottom: 0.9rem; display: flex; align-items: center; gap: 0.5rem; }
.card h2 .hint { font-weight: 400; font-size: 0.78rem; color: var(--muted); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
@media (max-width: 780px) { .grid-2 { grid-template-columns: 1fr; } }

/* Bar rows */
.bars { display: flex; flex-direction: column; gap: 0.5rem; }
.bar-row { display: grid; grid-template-columns: 90px 1fr 110px; align-items: center; gap: 0.6rem; font-size: 0.85rem; }
.bar-row .name { font-weight: 600; }
.bar-track { background: var(--soft); border-radius: 999px; height: 22px; overflow: hidden; border: 1px solid var(--border); }
.bar-fill { height: 100%; border-radius: 999px; min-width: 2px; transition: width 0.4s ease; }
.bar-row .val { text-align: right; color: var(--muted); font-variant-numeric: tabular-nums; }
.bar-row .val b { color: var(--ink); }

/* Tables */
.tbl-wrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
table.data th, table.data td { text-align: left; padding: 0.55rem 0.7rem; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.data th { color: var(--muted); text-transform: uppercase; font-size: 0.7rem; letter-spacing: 0.04em; cursor: default; }
table.data th.sortable { cursor: pointer; }
table.data th.sortable:hover { color: var(--blue); }
table.data tbody tr:hover, table.data tr:hover { background: var(--soft); }
table.data td.num, table.data th.num { text-align: right; font-variant-numeric: tabular-nums; }
.rank { font-weight: 800; color: var(--muted); }
.rank.top { color: var(--blue); }

/* Chips / badges */
.chip { display: inline-block; padding: 0.1rem 0.5rem; border-radius: 999px; font-size: 0.72rem; font-weight: 700; color: #fff; }
.badge-grade { display: inline-flex; align-items: center; justify-content: center; min-width: 26px; height: 26px; padding: 0 6px; border-radius: 6px; font-weight: 800; color: #fff; font-size: 0.8rem; }
.gA { background: #15803d; } .gB { background: #22c55e; } .gC { background: #eab308; color:#3b2f00;} .gD { background: #f97316; } .gE { background:#ef4444;} .gS{background:#0ea5e9;} .gF { background: #dc2626; }
.div-I { color: var(--d1); } .div-II { color: var(--d2); } .div-III { color: var(--d3); } .div-IV { color: var(--d4); } .div-0 { color: var(--d0); }

/* Forms */
.field { display: flex; flex-direction: column; gap: 0.25rem; }
.field label { font-size: 0.72rem; font-weight: 700; color: var(--muted); text-transform: uppercase; }
input, select { padding: 0.55rem 0.7rem; border: 1px solid #d1d5db; border-radius: 8px; font-size: 0.9rem; background: var(--soft); }
input:focus, select:focus { outline: none; border-color: var(--blue); background: #fff; }
.btn { padding: 0.6rem 1.2rem; background: var(--blue); color: #fff; border: none; border-radius: 8px; font-size: 0.9rem; font-weight: 700; cursor: pointer; }
.btn:hover { background: var(--blue-dark); }
.row { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: flex-end; }
.row .field { flex: 1; min-width: 160px; }

.tools { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
@media (max-width: 780px) { .tools { grid-template-columns: 1fr; } }

.muted { color: var(--muted); }
.center { text-align: center; }
.spinner { color: var(--muted); padding: 1.5rem; text-align: center; }
.footer { text-align: center; color: var(--muted); font-size: 0.8rem; padding: 1.5rem; }
.pill-tabs { display: inline-flex; background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 3px; margin-bottom: 1rem; }
.pill-tabs button { border: none; background: transparent; padding: 0.45rem 1rem; border-radius: 8px; font-weight: 700; font-size: 0.85rem; color: var(--muted); cursor: pointer; }
.pill-tabs button.active { background: var(--blue); color: #fff; }

/* Print / Save-as-PDF */
.print-only { display: none; }
.print-footer { margin-top: 1.5rem; padding-top: 0.75rem; border-top: 1px solid #cbd5e1; text-align: center; font-size: 0.82rem; color: #334155; }
.print-footer b { color: #0f172a; }
.print-footer .contact { font-size: 0.8rem; }
.print-footer .stamp { font-size: 0.7rem; color: #64748b; margin-top: 0.2rem; }
@media print {
  @page { margin: 14mm; }
  body { background: #fff; color: #000; }
  .site-header, .hdr-tools, #exam-switcher, .lang-toggle, .pill-tabs,
  .no-print, .btn, input, select, .row .field, #more { display: none !important; }
  .container, .subhead { max-width: 100%; margin: 0; padding: 0; }
  .card { box-shadow: none; border: 1px solid #cbd5e1; break-inside: avoid; margin-bottom: 12px; }
  .print-only { display: block; }
  a { color: #000; text-decoration: none; }
  table.data th { color: #333; }
  tbody tr:hover, table.data tr:hover { background: transparent; }
}