:root {
  color-scheme: light;
  --page: rgb(255, 253, 249);
  --paper: rgb(255, 253, 249);
  --paper-soft: #f7f7f5;
  --ink: #000000;
  --ink-soft: #28303d;
  --muted: #39414d;
  --secondary: #6d6d6d;
  --rule: #d1d1d1;
  --rule-soft: #e5e5e5;
  --blue: #2f5f7f;
  --blue-soft: #d1dfe4;
  --gray-blue: #abb8c3;
  --green: #0f766e;
  --green-soft: #d5e6df;
  --warning: #7a6100;
  --warning-soft: #f1e7bd;
  --danger: #a12a2a;
  --danger-soft: #ead0d0;
  --red: #c2413f;
  --red-soft: #ead6d2;
  --bg: var(--page);
  --surface: var(--paper);
  --surface-soft: var(--paper-soft);
  --line: var(--rule);
  --orange: var(--red);
  --violet: #5c557a;
  --shadow: transparent;
  --radius: 0;
  --font-xs: 11px;
  --font-sm: 13px;
  --font-md: 15px;
  --font-lg: 20px;
  --font-xl: 32px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  font-size: var(--font-md);
  font-weight: 300;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

button,
.file-button {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--page);
  color: var(--ink);
  padding: 8px 12px;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  font-weight: 300;
}

button:hover,
.file-button:hover {
  border-color: var(--muted);
  background: var(--paper-soft);
}

button:disabled,
.file-button[aria-disabled="true"] {
  color: var(--secondary);
  cursor: not-allowed;
  opacity: 0.62;
}

.primary-button,
.file-button.accent {
  border-color: var(--gray-blue);
  background: var(--blue-soft);
  color: var(--ink);
}

.primary-button:hover,
.file-button.accent:hover {
  border-color: var(--blue);
  background: #c2d4dc;
}

textarea,
select,
input[type="number"] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--page);
  color: var(--ink);
  font-weight: 300;
}

textarea {
  min-height: 320px;
  resize: vertical;
  padding: 14px;
  line-height: 1.45;
}

input[type="number"],
select {
  min-height: 40px;
  margin-top: 6px;
  padding: 7px 10px;
}

button:focus-visible,
.file-button:focus-within,
.dp-navbar a:focus-visible,
.dp-navbar-menu summary:focus-visible,
.dp-footer a:focus-visible,
select:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid rgba(47, 95, 127, 0.35);
  outline-offset: 2px;
}

input[type="file"] {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 6px;
  font-size: var(--font-xl);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 8px;
  font-size: var(--font-lg);
  font-weight: 300;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: var(--font-md);
  font-weight: 300;
  letter-spacing: 0;
}

p {
  line-height: 1.5;
}

main {
  max-width: 1480px;
  margin: 0 auto;
  padding: 20px 22px;
}

.lede {
  max-width: 760px;
  margin-bottom: 20px;
  color: var(--muted);
}

.eyebrow,
.kicker {
  display: block;
  margin-bottom: 7px;
  color: var(--secondary);
  font-size: var(--font-xs);
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.button-row,
.toggle-row,
.status-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.dp-navbar {
  height: 53px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0;
  font-size: var(--font-sm);
  border-bottom: 1px solid var(--line);
}

.dp-navbar-brand {
  padding-left: 16px;
  color: inherit;
  font-weight: 400;
  text-transform: uppercase;
  text-decoration: none;
}

.dp-navbar-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-right: 16px;
}

.dp-navbar-menu {
  display: none;
  padding-right: 16px;
}

.dp-navbar nav a,
.dp-footer nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.dp-navbar nav a:hover,
.dp-footer nav a:hover {
  border-bottom-color: currentColor;
}

.dp-project-header {
  padding: 14px 16px 18px;
}

.dp-project-header h1 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 300;
  line-height: 1.05;
}

.dp-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 16px;
  color: var(--secondary);
  font-size: var(--font-sm);
  border-top: 1px solid var(--line);
}

.dp-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.workspace {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.input-panel,
.viz-panel,
.details-grid article,
.reference-band,
.guide,
.reference-result,
.result-summary {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.input-panel,
.viz-panel,
.details-grid article,
.reference-result,
.guide {
  min-width: 0;
  padding: 16px;
}

.panel-heading {
  min-height: 48px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
  margin-bottom: 10px;
}

.panel-heading.compact {
  min-height: 0;
  align-items: center;
}

.count,
.muted,
.legend {
  color: var(--muted);
  font-size: var(--font-sm);
}

.count {
  margin-bottom: 0;
}

.controls-band {
  margin-top: 16px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-soft);
}

.control-cluster {
  display: grid;
  grid-template-columns: 1.3fr repeat(3, minmax(150px, 0.7fr));
  gap: 12px;
  align-items: end;
}

.control-cluster label {
  color: var(--ink);
  font-size: var(--font-sm);
}

.toggle-row {
  margin-top: 12px;
}

.toggle-row label {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  color: var(--ink);
}

input[type="checkbox"] {
  accent-color: var(--blue);
}

.button-row {
  margin-top: 12px;
}

.error {
  margin: 16px 0 0;
  padding: 12px;
  border: 1px solid rgba(166, 55, 55, 0.28);
  border-radius: var(--radius);
  background: var(--danger-soft);
  color: var(--danger);
}

.reference-band {
  margin-top: 16px;
  padding: 16px;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 18px;
}

.reference-input textarea {
  min-height: 160px;
}

.results {
  margin-top: 16px;
}

.result-summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding: 16px;
}

.score {
  font-size: 56px;
  font-weight: 300;
  line-height: 1;
  color: var(--blue);
}

.result-copy p {
  margin-bottom: 10px;
}

.meter {
  height: 8px;
  margin-top: 12px;
  overflow: hidden;
  border: 1px solid var(--rule-soft);
  border-radius: var(--radius);
  background: var(--surface-soft);
}

.meter span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--blue);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 4px 9px;
  border: 1px solid var(--green);
  border-radius: var(--radius);
  background: var(--green-soft);
  color: var(--green);
  font-size: var(--font-xs);
  font-weight: 400;
  text-transform: uppercase;
}

.status-pill.neutral {
  border-color: var(--rule);
  background: var(--paper-soft);
  color: var(--muted);
}

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

canvas {
  display: block;
  width: 100%;
  min-height: 240px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--page);
}

.legend {
  margin: 10px 0 0;
}

.legend span {
  display: inline-block;
  width: 12px;
  height: 12px;
  margin: 0 5px 0 12px;
  vertical-align: -1px;
  border-radius: var(--radius);
}

.legend span:first-child {
  margin-left: 0;
}

.blue { background: var(--blue); }
.orange { background: var(--red); }

.method-list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.method-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  border-bottom: 1px solid var(--line);
}

.method-list li:last-child {
  border-bottom: 0;
}

.reference-result {
  margin-top: 16px;
}

.audit-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.audit-grid div {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-soft);
}

.audit-grid strong {
  display: block;
  font-size: var(--font-lg);
  font-weight: 300;
}

.details-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px;
  margin-top: 16px;
}

.table-shell {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
}

th,
td {
  padding: 9px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: var(--font-sm);
}

thead th {
  background: var(--paper-soft);
  color: var(--secondary);
  font-size: var(--font-xs);
  font-weight: 400;
  text-transform: uppercase;
}

tbody tr:last-child th,
tbody tr:last-child td {
  border-bottom: 0;
}

.guide {
  margin-top: 16px;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.guide article {
  padding-top: 12px;
  border-top: 3px solid var(--line);
}

.guide article:nth-child(1) { border-color: var(--blue); }
.guide article:nth-child(2) { border-color: var(--orange); }
.guide article:nth-child(3) { border-color: var(--green); }
.guide article:nth-child(4) { border-color: var(--violet); }

@media (max-width: 1100px) {
  .control-cluster,
  .results-grid,
  .details-grid,
  .guide-grid,
  .reference-band {
    grid-template-columns: 1fr 1fr;
  }

  .details-grid article:first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 600px) {
  .dp-navbar .dp-navbar-links {
    display: none;
  }

  .dp-navbar-brand,
  .dp-navbar-menu {
    transform: translateY(-5px);
  }

  .dp-navbar-menu {
    position: relative;
    display: block;
  }

  .dp-navbar-menu summary {
    width: 36px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    list-style: none;
    cursor: pointer;
    border: 1px solid var(--line);
  }

  .dp-navbar-menu summary::-webkit-details-marker {
    display: none;
  }

  .dp-navbar-menu nav {
    position: absolute;
    z-index: 1;
    top: calc(100% + 4px);
    right: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-width: 160px;
    padding: 12px 16px;
    background: var(--paper);
    border: 1px solid var(--line);
  }
}

@media (max-width: 760px) {
  main {
    padding: 16px;
  }

  .workspace,
  .control-cluster,
  .results-grid,
  .details-grid,
  .guide-grid,
  .reference-band,
  .result-summary,
  .audit-grid {
    grid-template-columns: 1fr;
  }

  textarea {
    min-height: 240px;
  }

  .score {
    font-size: 44px;
  }
}