:root {
  --bg: #f7f8fa;
  --panel: #ffffff;
  --panel-2: #f0f3f5;
  --line: rgba(10, 13, 16, 0.08);
  --line-strong: rgba(10, 13, 16, 0.16);
  --text: #0a0d10;
  --muted: #626a73;
  --teal: #3fc5d8;
  --teal-dim: rgba(63, 197, 216, 0.12);
  --amber: #8a7048;
  --amber-dim: rgba(138, 112, 72, 0.1);
  --red: #c45c5c;
  --red-dim: rgba(196, 92, 92, 0.1);
  --blue: #3a7ca5;
  --shadow: 0 16px 50px rgba(10, 13, 16, 0.05);
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --radius: 18px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(900px 480px at 8% -8%, rgba(166, 242, 245, 0.42), transparent 52%),
    radial-gradient(720px 420px at 96% 8%, rgba(183, 230, 211, 0.28), transparent 46%),
    var(--bg);
}

button, input, select { font: inherit; color: inherit; }

button { cursor: pointer; }

:focus-visible {
  outline: 1px solid var(--teal);
  outline-offset: 3px;
}

::selection {
  background: rgba(63, 197, 216, 0.22);
}

.app {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px 48px;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 24px;
  height: 72px;
  margin: 0 -20px 8px;
  padding: 0 20px;
  background: rgba(251, 251, 252, 0.8);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
}

.wordmark span {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.site-nav-links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 13px;
  color: var(--muted);
}

.site-nav-links a {
  color: inherit;
  text-decoration: none;
}

.site-nav-links a:hover {
  color: var(--text);
}

.site-nav-links [aria-current="page"] {
  color: var(--text);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 8px 16px;
  background: var(--text);
  color: #fff !important;
}

.nav-cta:hover {
  box-shadow: 0 10px 28px rgba(10, 13, 16, 0.12);
}

.page-intro {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 0 20px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 20px;
}

.site-link {
  color: var(--teal);
  text-decoration: none;
}
.site-link:hover { text-decoration: underline; }

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
}

.brand-mark {
  width: 36px;
  height: 36px;
  color: var(--teal);
  flex: none;
}

.brand-kicker {
  margin: 0 0 4px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  font-variant-ligatures: none;
}

h1 {
  margin: 0;
  font-size: 22px;
  letter-spacing: -0.03em;
  font-weight: 550;
}

.subtitle {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 13.5px;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.badge, .tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 3px 8px;
  font-size: 11px;
  letter-spacing: 0.06em;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  white-space: nowrap;
}

.badge-sim {
  color: var(--teal);
  border-color: rgba(60, 191, 180, 0.55);
  background: var(--teal-dim);
}

.badge-warn, .tag {
  color: var(--amber);
  border-color: rgba(226, 177, 90, 0.45);
  background: var(--amber-dim);
}

.badge.pass {
  color: var(--teal);
  border-color: rgba(60, 191, 180, 0.55);
  background: var(--teal-dim);
}

.badge.fail {
  color: var(--red);
  border-color: rgba(227, 109, 109, 0.6);
  background: var(--red-dim);
}

.callout {
  margin: 0 0 6px;
  padding: 12px 16px;
  border: 1px solid rgba(138, 112, 72, 0.22);
  background: #f7f1ea;
  border-radius: var(--radius);
  color: #5c4a32;
}

.callout-en, .reference, .hint, .scenario-copy, .clock, .formula, .provisional, .static-line {
  color: var(--muted);
  font-size: 13px;
}

.callout-en { margin: 0 0 8px; }

.reference {
  margin: 0 0 18px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 12.5px;
}

.section-head, .panel-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.panel-head .status {
  flex: 1 0 100%;
}

h2 {
  margin: 0;
  font-size: 15px;
  letter-spacing: 0.04em;
  font-weight: 650;
}

h3 { margin: 0; font-size: 12px; font-weight: 650; letter-spacing: 0.04em; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}

.chain-section { margin-bottom: 16px; }

.alerts {
  display: flex;
  gap: 8px;
  min-height: 0;
}

.alert {
  margin: 0 0 10px;
  padding: 8px 12px;
  border-radius: 8px;
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 13px;
}

.alert[hidden] { display: none; }

.alert-sat {
  color: #7a2d2d;
  background: #f8ecec;
  border: 1px solid var(--red);
}

.alert-clip {
  color: #5c4a32;
  background: #f7f1ea;
  border: 1px solid var(--amber);
}

.chain {
  display: flex;
  align-items: stretch;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.block {
  flex: 1 1 118px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 10px 10px 8px;
  min-width: 108px;
  min-height: 118px;
}

.block h3 {
  color: var(--muted);
  font-size: 10.5px;
  min-height: 28px;
}

.block-value {
  margin: 6px 0 0;
  font-family: var(--mono);
  font-size: 22px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
}

.block-unit, .block-sub {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  font-family: var(--mono);
  overflow-wrap: anywhere;
}

.block.is-sat {
  border-color: var(--red);
  background: #f8ecec;
}

.block.is-clip {
  border-color: var(--amber);
}

.arrow {
  flex: none;
  width: 18px;
  align-self: center;
  position: relative;
  height: 14px;
}

.arrow::before {
  content: "";
  position: absolute;
  left: 0;
  right: 5px;
  top: 6px;
  height: 1.5px;
  background: var(--line-strong);
}

.arrow::after {
  content: "";
  position: absolute;
  right: 0;
  top: 2px;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 7px solid var(--teal);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 16px;
  align-items: start;
}

.primary, .params {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

.panel-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 16px 0 0;
  align-items: stretch;
}

.status {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--teal);
}

.field { display: block; margin: 0 0 10px; }

.field-label {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 4px;
  font-size: 13px;
}

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

.pair {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pair input[type="range"] { flex: 1; }

.pair input[type="number"] { width: 96px; flex: none; }

.tia-entry {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  min-width: 0;
}

.tia-entry .tia-preset { flex: 1; min-width: 0; }
.tia-entry input[type="number"] { width: 88px; flex: none; }
.tia-entry .tia-unit { width: 76px; flex: none; }
input.is-invalid, select.is-invalid { border-color: var(--red); }

.suffix {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  flex: none;
}

input[type="number"], select {
  width: 100%;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 10px;
}
input[type="number"]:focus, select:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 4px rgba(63, 197, 216, 0.16);
}

input[type="range"] {
  accent-color: var(--teal);
  width: 100%;
}

.mmol {
  margin: 0 0 4px;
  font-family: var(--mono);
  color: var(--blue);
}

.sim-bar {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  margin-top: 8px;
}

.grow { flex: 1; margin: 0; }

.sim-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

button {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

button:hover {
  border-color: rgba(10, 13, 16, 0.22);
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

button.primary {
  background: var(--text);
  border-color: var(--text);
  color: #fff;
}
button.primary:hover {
  box-shadow: 0 10px 28px rgba(10, 13, 16, 0.12);
}

.readouts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.readout {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
}

.readout h3 {
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  gap: 6px;
  align-items: center;
}

.big {
  margin: 8px 0 0;
  font-family: var(--mono);
  font-size: 28px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
}

.unit { margin: 0; color: var(--muted); font-size: 12px; }

.strip {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
}

.strip div, .debug-grid div {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px;
}

.strip dt, .debug-grid dt {
  color: var(--muted);
  font-size: 11px;
}

.strip dd, .debug-grid dd {
  margin: 4px 0 0;
  font-family: var(--mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.chart-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.chart-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 10px 12px 12px;
}

.chart-card header { margin-bottom: 6px; }

.chart-card p { margin: 2px 0 0; color: var(--muted); font-size: 12px; }

.chart-box { position: relative; height: 230px; }

.preset-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.preset-grid button { width: 100%; text-align: left; font-size: 12px; letter-spacing: 0.03em; }

.formula {
  margin: 6px 0;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}

.provisional { margin-top: 0; color: var(--amber); }

.static-line strong {
  color: var(--text);
  font-family: var(--mono);
  font-weight: 500;
}

.metrics { margin-top: 16px; }

.metric-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
}

.metric-grid article {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
}

.metric-grid h3 {
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  min-height: 30px;
}

.metric-grid p {
  margin: 6px 0 0;
  font-family: var(--mono);
  font-size: 20px;
  font-variant-numeric: tabular-nums;
}

.metric-grid span { color: var(--muted); font-size: 11px; }

.table-wrap { overflow-x: auto; margin-top: 8px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
  font-size: 13px;
}

th, td {
  text-align: right;
  padding: 7px 8px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
}

th {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 600;
  text-align: right;
}

td.empty { text-align: left; color: var(--muted); font-family: var(--sans); }

tr.is-sat td { background: rgba(227, 109, 109, 0.1); }

tr.is-ref td { background: rgba(60, 191, 180, 0.08); }

.debug { margin-top: 16px; }

.debug summary {
  cursor: pointer;
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 13px;
}

.debug-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin: 12px 0 0;
}

.debug-title { margin: 16px 0 6px; color: var(--muted); }

.checks {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  display: grid;
  gap: 4px;
}

.checks li {
  font-family: var(--mono);
  font-size: 12px;
  padding: 4px 6px;
  border-radius: 4px;
}

.checks li.pass { color: #1f7a86; }
.checks li.fail { color: #7a2d2d; background: var(--red-dim); }

.results-panel { margin-top: 16px; }
.results-kpis p {
  font-size: 16px;
  overflow-wrap: anywhere;
}
.results-actions { margin-top: 12px; }
.results-details { margin-top: 14px; }
.results-details summary {
  cursor: pointer;
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 13px;
}
.results-full {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin-top: 10px;
}
.results-full h3 {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.06em;
}
.results-full dl {
  margin: 0;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
}
.results-full div {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 3px 0;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
}
.results-full dt { color: var(--muted); }
.results-full dd {
  margin: 0;
  font-family: var(--mono);
  text-align: right;
}

.transient-block { margin-top: 16px; }
.transient-block h3 {
  margin: 14px 0 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.event-table-wrap { overflow-x: auto; }
.event-table { font-size: 12px; }
.event-table th, .event-table td { white-space: nowrap; }

.footer {
  margin-top: 18px;
  color: var(--muted);
  font-size: 12.5px;
}

.footer p { margin: 4px 0; }

.map-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.map-col { display: flex; flex-direction: column; gap: 0; }
.map-label {
  margin: 0 0 8px;
  text-align: center;
  letter-spacing: 0.08em;
  font-size: 12px;
  color: var(--muted);
}
.map-col .block { min-height: 0; flex: none; }
.map-col .block-value { font-size: 22px; }
.map-join {
  margin: 14px 0 8px;
  text-align: center;
  letter-spacing: 0.12em;
  font-size: 12px;
  color: var(--teal);
}
.map-results {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}
.map-results .block { min-height: 0; flex: none; }
.map-results .block-value { font-size: 22px; }

.v-arrow {
  width: 14px;
  height: 16px;
  margin: 2px auto;
  position: relative;
}
.v-arrow::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 5px;
  left: 6px;
  width: 1.5px;
  background: var(--line-strong);
}
.v-arrow::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 2px;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 7px solid var(--teal);
}

.readouts.trio { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.quality {
  margin: 8px 0 0;
  font-family: var(--mono);
  letter-spacing: 0.08em;
  font-size: 13px;
}
.q-good { color: var(--teal); }
.q-warn { color: var(--amber); }
.q-bad { color: var(--red); }

.toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 10px 0;
  font-size: 13px;
}
.toggle input { width: auto; accent-color: var(--teal); }

.metric-grid { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }

@media (max-width: 1100px) {
  .workspace, .readouts, .strip, .metric-grid, .debug-grid, .map-results {
    grid-template-columns: 1fr 1fr;
  }
  .readouts.trio, .map-grid { grid-template-columns: 1fr; }
  .chart-grid { grid-template-columns: 1fr; }
  .page-intro { flex-direction: column; }
  .site-nav { height: auto; min-height: 64px; padding-top: 12px; padding-bottom: 12px; flex-wrap: wrap; }
}

@media (max-width: 720px) {
  .readouts, .readouts.trio, .strip, .metric-grid, .debug-grid, .preset-grid, .sim-bar, .map-results, .panel-row {
    grid-template-columns: 1fr;
    display: grid;
  }
  .sim-bar { display: grid; }
  .pair input[type="number"] { width: 84px; }
  h1 { font-size: 22px; letter-spacing: -0.03em; }
  .site-nav-links { width: 100%; justify-content: flex-start; gap: 16px; }
  .site-nav-links a:not(.nav-cta) { display: none; }
  .nav-cta { margin-left: auto; }
}