:root {
  --bg: #f3f5f7;
  --surface: #ffffff;
  --surface-2: #f7f9fa;
  --border: #dde3e8;
  --text: #15232d;
  --muted: #5b6b77;
  --accent: #0b4f6c;
  --accent-2: #0e7490;
  --accent-soft: #e3f1f5;
  --danger: #b42318;
  --danger-soft: #fdecea;
  --ok: #067647;
  --warn: #b54708;
  --shadow: 0 1px 2px rgba(16, 32, 45, .06), 0 1px 1px rgba(16, 32, 45, .04);
  --radius: 10px;
  --heat-0: #eef6f8;
  --heat-1: #0b4f6c;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e151b; --surface: #151f27; --surface-2: #1a2630; --border: #2a3945;
    --text: #e4ecf1; --muted: #93a4b1; --accent: #5ab4d6; --accent-2: #67c7dd;
    --accent-soft: #16323f; --danger: #f97066; --danger-soft: #3a1714; --ok: #47cd89; --warn: #fdb022;
    --heat-0: #172630; --heat-1: #5ab4d6; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0e151b; --surface: #151f27; --surface-2: #1a2630; --border: #2a3945;
  --text: #e4ecf1; --muted: #93a4b1; --accent: #5ab4d6; --accent-2: #67c7dd;
  --accent-soft: #16323f; --danger: #f97066; --danger-soft: #3a1714; --ok: #47cd89; --warn: #fdb022;
  --heat-0: #172630; --heat-1: #5ab4d6; color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg); color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
h1, h2 { margin: 0; font-weight: 650; letter-spacing: -.01em; }
h1 { font-size: 18px; }
h2 { font-size: 14.5px; display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.mt { margin-top: 12px; } .mt-s { margin-top: 8px; }
[hidden] { display: none !important; }

/* ---------- top bar ---------- */
.topbar {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 12px 20px; background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 5;
}
.brand { display: flex; gap: 12px; align-items: center; min-width: 0; }
.logo svg { width: 34px; height: 34px; display: block; }
.logo rect { fill: var(--accent); }
.logo path { stroke: #fff; stroke-width: 2.4; fill: none; stroke-linecap: round; }
.sub { margin: 0; color: var(--muted); font-size: 12.5px; }
.top-actions { display: flex; gap: 10px; align-items: center; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 99px;
  font-size: 12px; border: 1px solid var(--border); background: var(--surface-2); white-space: nowrap; }
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.pill-ok .dot { background: var(--ok); }
.pill-wait .dot { background: var(--warn); animation: pulse 1.2s infinite; }
.pill-err .dot { background: var(--danger); }
@keyframes pulse { 50% { opacity: .35; } }

/* ---------- layout ---------- */
.layout {
  display: grid; grid-template-columns: minmax(340px, 440px) minmax(0, 1fr); gap: 16px;
  max-width: 1380px; margin: 0 auto; padding: 16px 20px 8px;
}
.col { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; box-shadow: var(--shadow); min-width: 0; }
.num { display: inline-grid; place-items: center; width: 20px; height: 20px; border-radius: 6px;
  background: var(--accent-soft); color: var(--accent); font-size: 12px; font-weight: 700; }
.tag { margin-left: auto; font-size: 11.5px; font-weight: 600; padding: 2px 8px; border-radius: 6px;
  background: var(--accent-soft); color: var(--accent); }
.row-between { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.row-between h2 { margin-bottom: 0; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }

/* ---------- form ---------- */
.field { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.field > span { font-size: 12px; color: var(--muted); font-weight: 550; }
input, select {
  font: inherit; color: var(--text); background: var(--surface); width: 100%;
  border: 1px solid var(--border); border-radius: 7px; padding: 6px 8px; min-height: 32px;
  font-variant-numeric: tabular-nums;
}
input:focus, select:focus { outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset: 0; border-color: var(--accent); }
input.invalid { border-color: var(--danger); background: var(--danger-soft); }
input[type=range] { padding: 0; border: 0; min-height: 0; accent-color: var(--accent); background: transparent; }
.slider { display: grid; grid-template-columns: 1fr 76px; gap: 8px; align-items: center; }

.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; background: var(--surface-2); }
.seg.wrap { display: flex; flex-wrap: wrap; }
.seg button { font: inherit; border: 0; background: transparent; color: var(--text); padding: 6px 12px; cursor: pointer; flex: 1 1 auto; }
.seg button + button { border-left: 1px solid var(--border); }
.seg button.on { background: var(--accent); color: #fff; }
.seg.small button { padding: 3px 9px; font-size: 12px; }
:root[data-theme="dark"] .seg button.on { color: #0e151b; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .seg button.on { color: #0e151b; } }

table.cond { width: 100%; border-collapse: collapse; }
table.cond th, table.cond td { padding: 3px 4px; text-align: left; font-size: 12px; }
table.cond thead th { color: var(--muted); font-weight: 550; }
table.cond tbody th { font-weight: 600; white-space: nowrap; }

.btn { font: inherit; font-weight: 600; border-radius: 8px; padding: 8px 16px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--text); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
:root[data-theme="dark"] .btn.primary { color: #0e151b; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .btn.primary { color: #0e151b; } }
.btn.secondary { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.btn.ghost:hover, .btn.secondary:hover { border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.small { padding: 4px 10px; font-size: 12.5px; }
.btn.block { width: 100%; }
.btn.busy { position: relative; color: transparent !important; }
.btn.busy::after { content: ""; position: absolute; inset: 0; margin: auto; width: 16px; height: 16px;
  border: 2px solid #fff; border-right-color: transparent; border-radius: 50%; animation: spin .7s linear infinite; }
.btn.secondary.busy::after, .btn.ghost.busy::after { border-color: var(--accent); border-right-color: transparent; }
@keyframes spin { to { transform: rotate(360deg); } }
.upload { display: inline-flex; align-items: center; cursor: pointer; }
.actions { display: flex; gap: 10px; }
.actions .btn.primary { flex: 1; padding: 10px 16px; font-size: 15px; }

/* ---------- results ---------- */
.figure { padding: 8px; background: #fff; }
.figure img { width: 100%; height: auto; display: block; }
.alert { border-radius: var(--radius); padding: 10px 14px; background: var(--danger-soft); color: var(--danger);
  border: 1px solid color-mix(in srgb, var(--danger) 35%, transparent); font-weight: 550; }
.tabs { display: flex; gap: 4px; margin: 10px 0 8px; border-bottom: 1px solid var(--border); }
.tabs button { font: inherit; background: none; border: 0; padding: 6px 12px; cursor: pointer; color: var(--muted);
  border-bottom: 2px solid transparent; margin-bottom: -1px; font-weight: 600; }
.tabs button.on { color: var(--accent); border-bottom-color: var(--accent); }
.table-wrap { overflow-x: auto; }
table.res { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
table.res th, table.res td { padding: 7px 10px; border-bottom: 1px solid var(--border); text-align: right; white-space: nowrap; }
table.res th:first-child, table.res td:first-child { text-align: left; }
table.res thead th { font-size: 12px; color: var(--muted); font-weight: 600; }
table.res tr.total td { font-weight: 700; background: var(--surface-2); }
table.res td.empty { text-align: center; color: var(--muted); padding: 20px; }
td.neg { color: var(--danger); }
.coef { margin-top: 10px; }
.coef summary { cursor: pointer; color: var(--muted); font-size: 12.5px; }
.coef code { font-size: 12px; }
.coef-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 4px 14px; margin-top: 8px; font-variant-numeric: tabular-nums; }

.grid-angles { display: grid; grid-template-columns: 1fr 1fr 150px; gap: 14px; }
.kpis { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-top: 14px; }
.kpi { background: var(--surface-2); border: 1px solid var(--border); border-radius: 9px; padding: 10px 12px; display: flex; flex-direction: column; min-width: 0; }
.kpi .k { font-size: 12px; color: var(--muted); font-weight: 600; }
.kpi .v { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; margin: 2px 0; overflow-wrap: anywhere; }
.kpi .u { font-size: 11.5px; color: var(--muted); }
.kpi.hero { background: var(--accent); border-color: var(--accent); color: #fff; }
.kpi.hero .k, .kpi.hero .u { color: rgba(255,255,255,.82); }
:root[data-theme="dark"] .kpi.hero { color: #0e151b; }
:root[data-theme="dark"] .kpi.hero .k, :root[data-theme="dark"] .kpi.hero .u { color: rgba(14,21,27,.75); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .kpi.hero { color: #0e151b; }
  :root:not([data-theme="light"]) .kpi.hero .k, :root:not([data-theme="light"]) .kpi.hero .u { color: rgba(14,21,27,.75); }
}
.flash { animation: flash .6s ease; }
@keyframes flash { from { background: var(--accent-soft); } }

table.heat { border-collapse: separate; border-spacing: 2px; font-variant-numeric: tabular-nums; margin-top: 8px; }
table.heat th { font-size: 11.5px; color: var(--muted); font-weight: 600; padding: 2px 6px; white-space: nowrap; }
table.heat td { font-size: 12px; padding: 6px 8px; text-align: right; border-radius: 4px; min-width: 64px; }
table.heat td.gov { outline: 2px solid var(--danger); outline-offset: -2px; font-weight: 700; }
table.heat caption { caption-side: bottom; text-align: left; padding-top: 8px; font-size: 12.5px; color: var(--muted); }

.foot { max-width: 1380px; margin: 0 auto; padding: 14px 20px 28px; color: var(--muted); font-size: 12.5px; display: flex; gap: 10px; flex-wrap: wrap; }
.foot a { color: var(--accent); }
.toast { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); background: var(--text); color: var(--bg);
  padding: 8px 14px; border-radius: 8px; font-size: 13px; box-shadow: 0 4px 14px rgba(0,0,0,.2); z-index: 20; max-width: calc(100% - 32px); }

/* ---------- responsive ---------- */
@media (max-width: 1100px) { .kpis { grid-template-columns: repeat(3, 1fr); } .kpi.hero { grid-column: span 3; } }
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; padding: 12px 16px; }
  .grid-angles { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .topbar { padding: 10px 16px; }
  .sub { display: none; }
  .grid3 { grid-template-columns: repeat(2, 1fr); }
  .kpis { grid-template-columns: repeat(2, 1fr); } .kpi.hero { grid-column: span 2; }
  table.cond thead th:last-child { font-size: 11px; }
}

/* ---------- print ---------- */
@media print {
  .topbar .top-actions, .actions, #btnSweep, .upload, .tabs, #btnLoadShip, #methodSeg { display: none !important; }
  body { background: #fff; color: #000; }
  .layout { grid-template-columns: 1fr 1fr; padding: 0; }
  .card { box-shadow: none; break-inside: avoid; }
  .topbar { position: static; }
}
.row-gap { display: inline-flex; gap: 6px; align-items: center; }

/* ---------- layout refinements ---------- */
.seg.wrap { display: grid; grid-template-columns: repeat(auto-fit, minmax(62px, 1fr)); gap: 1px; background: var(--border); }
.seg.wrap button { background: var(--surface-2); border-left: 0 !important; padding: 6px 4px; }
.seg.wrap button.on { background: var(--accent); }
.grid2.stack { grid-template-columns: 1fr; }
.grid3, .grid2 { align-items: end; }
table.cond select { min-width: 68px; }
table.cond input { min-width: 0; }
.kpi.hero.flash { animation: none; }