:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --cell: #ffffff;
  --header: #edf3f9;
  --line: #d5deea;
  --text: #172033;
  --muted: #5d6b82;
  --input-border: #b9c5d4;
  --primary: #1769aa;
  --primary-strong: #103d66;
  --primary-soft: #e7f2fb;
  --accent: #1f8f5f;
  --accent-soft: #e7f6ef;
  --warning: #9a5b00;
  --warning-border: #e5a526;
  --warning-soft: #fff4dc;
  --diagonal: #dcecff;
  --diagonal-text: #0f3f75;
  --shadow: 0 10px 28px rgba(23, 32, 51, 0.08);
}

body.dark {
  --bg: #0f1724;
  --panel: #151f2e;
  --cell: #101927;
  --header: #1e2c40;
  --line: #2e4058;
  --text: #eef4ff;
  --muted: #afbdd1;
  --input-border: #536780;
  --primary: #7dc4ff;
  --primary-strong: #d6ecff;
  --primary-soft: #1d3a52;
  --accent: #6fe0aa;
  --accent-soft: #153b2c;
  --warning: #ffd484;
  --warning-border: #f2b94b;
  --warning-soft: #3f3116;
  --diagonal: #233c5e;
  --diagonal-text: #cfe5ff;
  --shadow: 0 14px 34px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
}

main {
  width: min(100% - 24px, 1760px);
  margin: 0 auto;
  padding: 18px 0 28px;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
}

.brand-title {
  display: flex;
  align-items: center;
  gap: 18px;
  min-width: 0;
}

.brand-link {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text);
  background: var(--panel);
  box-shadow: var(--shadow);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 10px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  font-size: 1.45rem;
  font-weight: 800;
}

.brand-link strong,
.brand-link small {
  display: block;
  line-height: 1;
}

.brand-link small {
  margin-top: 4px;
  color: var(--primary);
  font-size: 0.58rem;
  letter-spacing: 0.28em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

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

.tool-nav a {
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--primary-strong);
  background: var(--panel);
  text-decoration: none;
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.tool-nav a:hover,
.tool-nav a:focus-visible {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-soft);
}

h1 {
  margin: 0 0 4px;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.1;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
}

.theme-toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.toggle-track {
  width: 48px;
  height: 26px;
  padding: 3px;
  border-radius: 999px;
  background: #c8d3e2;
  border: 1px solid var(--line);
  transition: background 160ms ease;
}

.toggle-thumb {
  display: block;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 6px rgba(23, 32, 51, 0.24);
  transition: transform 160ms ease;
}

.theme-toggle input:checked + .toggle-track {
  background: var(--primary);
}

.theme-toggle input:checked + .toggle-track .toggle-thumb {
  transform: translateX(21px);
}

.top-panel {
  display: grid;
  grid-template-columns: minmax(320px, 0.7fr) minmax(460px, 1.3fr);
  gap: 14px;
  margin-bottom: 14px;
}

.controls,
.results {
  display: grid;
  gap: 12px;
}

.controls {
  grid-template-columns: repeat(2, minmax(150px, 1fr));
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.results {
  grid-template-columns: repeat(2, minmax(210px, 1fr));
}

label:not(.theme-toggle) {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

select {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--input-border);
  border-radius: 7px;
  background: var(--cell);
  color: var(--text);
  font-size: 15px;
  padding: 0 11px;
}

.result-box {
  min-height: 84px;
  padding: 13px 15px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.result-title {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.result-value {
  margin-top: 7px;
  color: var(--primary);
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
}

.result-detail {
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}

.table-shell {
  overflow: auto;
  height: calc(100vh - 238px);
  min-height: 520px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  min-width: 1510px;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 14px;
  text-align: center;
}

th,
td {
  min-width: 48px;
  height: 34px;
  padding: 6px 8px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--cell);
  white-space: nowrap;
}

thead th {
  position: sticky;
  top: 0;
  z-index: 3;
  background: var(--header);
  color: var(--primary-strong);
  font-weight: 800;
}

tbody th {
  position: sticky;
  left: 0;
  z-index: 2;
  min-width: 150px;
  background: var(--header);
  color: var(--primary-strong);
  font-weight: 800;
}

thead th:first-child {
  left: 0;
  z-index: 4;
  min-width: 150px;
}

td.diagonal {
  background: var(--diagonal);
  color: var(--diagonal-text);
  box-shadow: inset 0 0 0 2px rgba(23, 105, 170, 0.28);
  font-weight: 900;
}

.is-row,
.is-col {
  background: var(--primary-soft);
}

tbody th.is-row,
thead th.is-col {
  background: #cfe6f8;
  color: #103d66;
}

body.dark tbody th.is-row,
body.dark thead th.is-col {
  background: #274766;
  color: #d7ecff;
}

td.is-interestadual {
  background: var(--accent-soft);
  color: var(--accent);
  outline: 3px solid var(--accent);
  outline-offset: -3px;
  font-weight: 900;
}

td.is-interna {
  background: var(--warning-soft);
  color: var(--warning);
  outline: 3px solid var(--warning-border);
  outline-offset: -3px;
  font-weight: 900;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  display: inline-block;
}

.dot.interestadual {
  background: var(--accent);
}

.dot.interna {
  background: var(--warning-border);
}

.dot.diagonal {
  background: var(--diagonal);
  border: 1px solid var(--primary);
}

.site-footer {
  width: min(100% - 24px, 1760px);
  margin: 0 auto;
  padding: 0 0 24px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

@media (max-width: 980px) {
  .page-header,
  .top-panel {
    grid-template-columns: 1fr;
  }

  .page-header {
    display: grid;
  }

  .brand-title,
  .header-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .tool-nav {
    flex-wrap: wrap;
  }
}

@media (max-width: 720px) {
  main {
    width: min(100% - 16px, 1760px);
    padding-top: 14px;
  }

  .controls,
  .results {
    grid-template-columns: 1fr;
  }

  .table-shell {
    height: 62vh;
    min-height: 420px;
  }

  .brand-title {
    gap: 12px;
  }

  .brand-link {
    width: 100%;
  }
}