:root {
  --bg: #f4f6f9; --card: #fff; --ink: #1f2a37; --muted: #6b7280; --line: #e5e7eb; --line-2: #f0f2f5;
  --accent: #2f5bea; --accent-soft: #eaf0ff; --accent-ink: #1c3fb8;
  --ok: #15803d; --ok-bg: #dcfce7; --warn: #a16207; --warn-bg: #fef3c7; --bad: #b91c1c; --bad-bg: #fee2e2;
  --radius: 14px; --shadow: 0 1px 2px rgba(16,24,40,.04), 0 4px 16px rgba(16,24,40,.05);
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 14px/1.5 Inter, -apple-system, "Segoe UI", system-ui, sans-serif; }
.wrap { max-width: 1240px; margin: 0 auto; padding: 28px 20px 40px; }
h1 { margin: 0; font-size: 30px; letter-spacing: -.02em; font-weight: 700; }
h2 { margin: 0; font-size: 16px; font-weight: 650; letter-spacing: -.01em; }
.sub, .hint { margin: 2px 0 0; color: var(--muted); font-size: 13px; }
.lead { margin: 0 0 14px; color: #374151; max-width: 82ch; }
code { font-family: var(--mono); font-size: 12.5px; background: #f1f3f7; padding: 1px 5px; border-radius: 5px; }
a { color: var(--accent); }

.top { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 18px; }
.link { background: none; border: 0; color: var(--muted); cursor: pointer; font: inherit; text-decoration: underline; text-underline-offset: 3px; }
.link:hover { color: var(--ink); }

/* KPI cards */
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 20px; }
.kpi { background: var(--card); border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 4px; border: 1px solid transparent; }
.kpi .lab { font-size: 12px; color: var(--muted); font-weight: 500; text-transform: uppercase; letter-spacing: .05em; }
.kpi b { font-size: 28px; letter-spacing: -.02em; line-height: 1.15; font-variant-numeric: tabular-nums; }
.kpi b i { font-style: normal; font-size: 15px; color: var(--muted); font-weight: 500; }
.kpi small { color: var(--muted); font-size: 12.5px; }
.kpi .bar { height: 6px; background: var(--line-2); border-radius: 99px; overflow: hidden; margin: 4px 0 2px; }
.kpi .bar i { display: block; height: 100%; background: var(--accent); border-radius: 99px; }
.kpi .bar i.ot { background: #f59e0b; }
.kpi.covered { background: var(--ok-bg); border-color: #86efac; }
.kpi.covered b { color: var(--ok); }
.kpi.shortfall { background: var(--warn-bg); border-color: #fcd34d; }
.kpi.shortfall b { color: var(--warn); }
.kpi.risk { background: var(--bad-bg); border-color: #fca5a5; }
.kpi.risk b { color: var(--bad); }
.kpi .why { margin: 4px 0 0; padding-left: 16px; font-size: 12.5px; color: #374151; }
.kpi .why li { margin: 2px 0; }

/* tabs */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 18px; }
.tabs button { background: none; border: 0; padding: 10px 16px; font: inherit; font-weight: 500; color: var(--muted); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs button:hover { color: var(--ink); }
.tabs button.on { color: var(--accent-ink); border-color: var(--accent); }

/* cards */
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px 20px; margin-bottom: 18px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.sched-head { display: grid; grid-template-columns: auto 1fr auto; }
.sched-head h2 { text-align: center; }
.btn { font: inherit; font-weight: 500; padding: 8px 14px; border-radius: 10px; border: 1px solid var(--line); background: #fff; color: var(--ink); cursor: pointer; text-decoration: none; display: inline-block; }
.btn:hover { background: #f8fafc; border-color: #cbd5e1; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-ink); }
.btn.small { padding: 5px 10px; font-size: 13px; }
.btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, .tabs button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* priorities */
.prio-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 24px; align-items: start; }
.prio { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.prio li { display: grid; grid-template-columns: 30px 1fr auto; gap: 12px; align-items: center; padding: 10px 12px; border: 1px solid var(--line); border-radius: 12px; background: #fbfcfe; }
.prio .rank { width: 26px; height: 26px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-ink); font-weight: 700; display: grid; place-items: center; font-size: 13px; }
.prio li:first-child .rank { background: var(--accent); color: #fff; }
.prio .name { font-weight: 600; }
.prio .desc { color: var(--muted); font-size: 12.5px; }
.prio .mv { display: flex; gap: 4px; }
.prio .mv button { width: 28px; height: 28px; border-radius: 8px; border: 1px solid var(--line); background: #fff; cursor: pointer; color: var(--muted); }
.prio .mv button:hover:not(:disabled) { color: var(--accent-ink); border-color: var(--accent); }
.prio .mv button:disabled { opacity: .35; cursor: default; }
.controls { display: grid; gap: 12px; }
label { display: grid; gap: 4px; font-size: 12.5px; color: var(--muted); font-weight: 500; }
input, select, textarea { font: inherit; color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 9px; padding: 7px 10px; min-width: 0; }
input[type=number] { font-variant-numeric: tabular-nums; }
.field { display: flex; align-items: center; gap: 8px; }
.field em { font-style: normal; color: var(--muted); }
.field input { flex: 1; }

/* draft / optimize */
.demand-details { margin-top: 16px; border-top: 1px solid var(--line-2); padding-top: 12px; }
.demand-details summary { cursor: pointer; list-style: none; display: flex; gap: 10px; align-items: baseline; margin-bottom: 8px; color: var(--ink); }
.demand-details summary::-webkit-details-marker { display: none; }
.demand-details summary::before { content: "▸"; color: var(--muted); transition: transform .15s; }
.demand-details[open] summary::before { transform: rotate(90deg); }
.grid.inputs td, .grid.inputs th { padding: 5px 10px; }
.grid.inputs tfoot td { padding-top: 8px; }
.applybar { position: sticky; bottom: 0; z-index: 5; display: flex; align-items: center; justify-content: flex-end; gap: 16px; margin: 16px -20px -18px; padding: 12px 20px; background: rgba(255,255,255,.96); backdrop-filter: blur(6px); border-top: 1px solid var(--line); border-radius: 0 0 var(--radius) var(--radius); }
.applybar .state { margin-right: auto; color: var(--muted); font-size: 13px; display: flex; align-items: center; gap: 8px; }
.applybar .state::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: #22c55e; }
.applybar.dirty .state { color: var(--warn); font-weight: 600; }
.applybar.dirty .state::before { background: #f59e0b; }
.applybar.dirty #optimizeBtn { box-shadow: 0 0 0 4px var(--accent-soft); }
.applybar:not(.dirty) #discardBtn { visibility: hidden; }
.unsaved { display: flex; align-items: center; justify-content: space-between; gap: 12px; background: var(--warn-bg); color: #713f12; border-radius: 10px; padding: 8px 12px; font-size: 13px; margin-bottom: 8px; }

/* chart + footer */
.chart { min-height: 200px; }
.foot { display: flex; flex-wrap: wrap; gap: 10px 28px; align-items: center; margin-top: 10px; padding-top: 12px; border-top: 1px solid var(--line-2); }
.foot .stat b { font-size: 17px; font-variant-numeric: tabular-nums; }
.foot .stat span { color: var(--muted); }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 4px 11px; border-radius: 99px; font-weight: 600; font-size: 13px; }
.pill.ok { background: var(--ok-bg); color: var(--ok); }
.pill.warn { background: var(--warn-bg); color: var(--warn); }
.pill.bad { background: var(--bad-bg); color: var(--bad); }
.warn { background: var(--warn-bg); color: #713f12; border-radius: 10px; padding: 8px 12px; font-size: 13px; margin-bottom: 8px; }
.error { background: var(--bad-bg); color: var(--bad); border-radius: 10px; padding: 10px 14px; margin-bottom: 14px; }

/* print popover */
.print-wrap { position: relative; }
.popover { position: absolute; right: 0; top: 44px; z-index: 20; background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 10px 30px rgba(16,24,40,.14); padding: 14px 16px; width: 230px; }
.popover p { margin: 0 0 8px; }
.check { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--ink); font-weight: 500; padding: 4px 0; }
.pop-actions { margin-top: 10px; display: flex; gap: 12px; align-items: center; }
.pop-actions.left { justify-content: flex-start; }

/* sequences */
.seq-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.seq h3 { margin: 0 0 8px; font-size: 14px; }
.seq h3 small { color: var(--muted); font-weight: 400; }
.seq ol { list-style: none; margin: 0; padding: 0 0 0 4px; border-left: 2px solid var(--line); display: grid; gap: 6px; }
.step { position: relative; padding: 6px 10px; border-radius: 9px; font-size: 13px; background: #f8fafc; margin-left: 10px; }
.step::before { content: ""; position: absolute; left: -17px; top: 14px; width: 8px; height: 8px; border-radius: 50%; background: var(--c, #94a3b8); }
.step.run { border-left: 4px solid var(--c); }
.step.change { background: #111827; color: #fef3c7; }
.step.change::before { background: #fbbf24; }
.step.down { background: var(--bad-bg); color: var(--bad); }
.step .t { display: block; font-size: 12px; opacity: .75; }
.step .ot { font-size: 11px; font-weight: 600; background: #fef3c7; color: #92400e; padding: 1px 6px; border-radius: 6px; margin-left: 6px; }

/* tables */
.table-scroll { overflow-x: auto; }
.table-scroll.tall { max-height: 360px; overflow: auto; border: 1px solid var(--line-2); border-radius: 10px; }
table.grid { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.grid th { text-align: right; font-weight: 600; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; padding: 8px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; position: sticky; top: 0; background: #fff; }
.grid td { padding: 8px 10px; border-bottom: 1px solid var(--line-2); text-align: right; white-space: nowrap; }
.grid th:first-child, .grid td:first-child { text-align: left; }
.grid tfoot td { font-weight: 600; border-top: 2px solid var(--line); border-bottom: 0; }
.grid.mono td, .grid.mono th { font-family: var(--mono); font-size: 12.5px; text-align: left; text-transform: none; letter-spacing: 0; }
.grid.inputs input { width: 92px; text-align: right; padding: 5px 8px; }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 8px; vertical-align: middle; }
.tag { display: inline-block; padding: 2px 9px; border-radius: 99px; font-size: 12px; font-weight: 600; }
.tag.covered { background: var(--ok-bg); color: var(--ok); }
.tag.shortfall { background: var(--warn-bg); color: var(--warn); }
.tag.short { background: var(--bad-bg); color: var(--bad); }
.tag.ot { background: #fef3c7; color: #92400e; margin-left: 4px; }
.all-molds { display: flex; align-items: center; gap: 10px; margin-top: 14px; color: var(--muted); flex-wrap: wrap; }
.all-molds input { width: 80px; }

/* disruptions */
.dis-form { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; }
.dis-form label { min-width: 90px; }
.dis-form .grow { flex: 1; min-width: 180px; }
.dis-list { margin-top: 14px; display: grid; gap: 8px; }
.dis-item { display: flex; align-items: center; gap: 12px; padding: 8px 12px; background: var(--bad-bg); color: #7f1d1d; border-radius: 10px; }
.dis-item span { flex: 1; }
.dis-item button { border: 0; background: none; cursor: pointer; color: var(--bad); font-weight: 600; }
.empty { color: var(--muted); font-size: 13px; }

/* workbook */
.dl-row { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.cli { background: #0f172a; color: #e2e8f0; border-radius: 10px; padding: 12px 14px; font: 12.5px/1.6 var(--mono); overflow-x: auto; margin: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.chip { border: 1px solid var(--line); background: #fff; border-radius: 99px; padding: 4px 12px; font: 500 12.5px var(--mono); cursor: pointer; color: var(--ink); }
.chip:hover { border-color: var(--accent); }
.chip.on { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-ink); }
textarea { width: 100%; font: 13px/1.5 var(--mono); resize: vertical; }
details { margin-top: 10px; } summary { cursor: pointer; color: var(--muted); }
.gl-sec { margin: 18px 0 6px; font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--accent-ink); font-weight: 700; }
.gl-row { display: grid; grid-template-columns: 170px 1fr 1.25fr; gap: 14px; padding: 8px 0; border-bottom: 1px solid var(--line-2); align-items: baseline; }
.gl-row .sym { font-family: var(--mono); font-weight: 500; color: var(--ink); }
.gl-row .fm { font-family: var(--mono); font-size: 12.5px; color: #1e3a8a; background: #f5f8ff; border-radius: 8px; padding: 4px 8px; overflow-wrap: anywhere; }
.page-foot { color: var(--muted); font-size: 12.5px; text-align: center; margin-top: 24px; }

/* busy overlay */
.busy { position: fixed; inset: 0; background: rgba(244,246,249,.72); backdrop-filter: blur(2px); display: grid; place-items: center; z-index: 50; }
.busy[hidden] { display: none; }
.busy-card { background: #fff; box-shadow: 0 10px 40px rgba(16,24,40,.18); border-radius: 16px; padding: 22px 30px; display: grid; gap: 6px; justify-items: center; }
.busy-card small { color: var(--muted); }
.spin { width: 28px; height: 28px; border: 3px solid var(--accent-soft); border-top-color: var(--accent); border-radius: 50%; animation: sp 0.8s linear infinite; }
@keyframes sp { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spin { animation-duration: 2.4s; } }
[hidden] { display: none !important; }

@media (max-width: 900px) {
  .kpis { grid-template-columns: repeat(2, 1fr); }
  .prio-grid, .seq-grid { grid-template-columns: 1fr; }
  .gl-row { grid-template-columns: 1fr; gap: 2px; }
  .sched-head { grid-template-columns: 1fr auto; } .sched-head h2 { grid-column: 1 / -1; grid-row: 2; text-align: left; }
}
@media (max-width: 520px) { .kpis { grid-template-columns: 1fr; } h1 { font-size: 24px; } .wrap { padding: 18px 12px; } }

/* print */
@page { size: landscape; margin: 12mm; }
@media print {
  body { background: #fff; }
  .wrap { max-width: none; padding: 0; }
  .no-print, .tabs, .busy { display: none !important; }
  .card, .kpi { box-shadow: none; border: 1px solid var(--line); break-inside: avoid; }
  body.hide-schedule .p-schedule, body.hide-sequence .p-sequence { display: none !important; }
  #tab-workbook { display: none !important; }
  .seq-grid { grid-template-columns: repeat(3, 1fr); }
}