:root {
  color-scheme: light;
  --bg: #f4f6f8;
  --panel: #ffffff;
  --panel-soft: #f9fafb;
  --ink: #20262e;
  --muted: #65717f;
  --line: #dce2e8;
  --line-strong: #b8c2cc;
  --accent: #0f766e;
  --accent-deep: #115e59;
  --accent-soft: #d9f4ef;
  --warning: #b45309;
  --danger: #b42318;
  --shadow: 0 18px 45px rgba(24, 32, 42, 0.08);
  --radius: 8px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  padding: 0;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, #eef3f4 0, var(--bg) 320px),
    var(--bg);
  color: var(--ink);
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  width: min(1440px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 32px;
}

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

.eyebrow,
.section-kicker {
  margin: 0 0 4px;
  color: var(--accent-deep);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  max-width: 720px;
  font-size: clamp(1.2rem, 2vw, 1.75rem);
  line-height: 1.18;
}

h2 {
  font-size: 1rem;
  line-height: 1.25;
}

.top-actions,
.data-heading-actions,
.chart-legend {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.button,
.icon-button {
  min-height: 40px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  line-height: 1;
  transition:
    background 0.15s ease,
    border-color 0.15s ease,
    transform 0.15s ease;
}

.button {
  padding: 0 14px;
  text-decoration: none;
}

.button .button-symbol {
  font-size: 1.05rem;
  line-height: 1;
}

.button-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.78);
}

.button:hover,
.icon-button:hover {
  transform: translateY(-1px);
}

.button.primary:hover {
  background: var(--accent-deep);
}

.language-switcher {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 40px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  padding: 3px;
}

.language-button {
  width: 36px;
  height: 32px;
  min-height: 0;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  text-decoration: none;
}

.language-button[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.language-button:focus-visible {
  outline: 2px solid var(--accent-soft);
  outline-offset: 2px;
}

.flag {
  width: 22px;
  height: 15px;
  border: 1px solid rgba(32, 38, 46, 0.22);
  border-radius: 2px;
  box-shadow: 0 1px 1px rgba(24, 32, 42, 0.12);
}

.flag-pl {
  background: linear-gradient(#fff 0 50%, #dc143c 50% 100%);
}

.flag-en {
  background: url("flag-gb.svg") center / cover no-repeat;
}

.icon-button {
  width: 40px;
  padding: 0;
  font-size: 1.25rem;
}

.icon-button.danger {
  color: var(--danger);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(340px, 0.85fr) minmax(320px, 1.15fr);
  gap: 16px;
  align-items: start;
}

.workspace-column {
  display: grid;
  gap: 16px;
  align-content: start;
  min-width: 0;
}

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

.data-panel,
.results-panel,
.chart-panel,
.definition-panel {
  min-width: 0;
  padding: 18px;
}

.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.panel-heading.compact {
  margin-bottom: 12px;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 8px;
  text-align: left;
  vertical-align: middle;
}

th {
  background: var(--panel-soft);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

.data-table {
  min-width: 420px;
}

.data-table th:first-child,
.data-table td:first-child {
  width: 48px;
  color: var(--muted);
  text-align: center;
}

.data-table th,
.data-table td {
  text-align: center;
}

.data-table input {
  width: 100%;
  min-height: 34px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: var(--ink);
  padding: 6px 8px;
  text-align: center;
}

.data-table input:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
  background: #fff;
}

.measurement-control {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-soft);
  padding: 12px;
}

.count-field {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 800;
}

.count-field input {
  width: 84px;
  min-height: 38px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  padding: 0 10px;
  font-weight: 800;
}

.count-field input:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

.count-note,
.status-line {
  min-height: 22px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.35;
}

.status-line {
  margin: 0;
}

.status-line.warning {
  color: var(--warning);
}

.status-line.error {
  color: var(--danger);
}

.data-heading-actions {
  justify-content: flex-end;
  text-align: right;
}

.data-status-row {
  display: flex;
  justify-content: flex-start;
  margin: -6px 0 10px;
  text-align: left;
}

.result-block {
  margin-top: 12px;
}

.result-label {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1.2;
  text-transform: uppercase;
}

.report-box,
.rounded-report-box {
  min-height: 96px;
  margin: 0;
  overflow: auto;
  white-space: pre-wrap;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  font-weight: 800;
  line-height: 1.25;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.report-box {
  min-height: 68px;
  background: #eef5f6;
  border-color: #b9cdd2;
  color: #16343b;
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  font-weight: 700;
  gap: clamp(18px, 4vw, 42px);
  flex-wrap: wrap;
}

.result-value {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

.rounded-report-box {
  min-height: 68px;
  background: #e9f7f2;
  border-color: #9fd8ce;
  color: var(--accent-deep);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  font-weight: 700;
}

.chart-legend {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
}

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

.dot.measured {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

.line.fitted,
.line.axis {
  width: 22px;
  height: 3px;
  border-radius: 3px;
  display: inline-block;
}

.line.fitted {
  background: #c2410c;
}

.line.axis {
  background: var(--ink);
}

.canvas-wrap {
  height: clamp(340px, 45vw, 520px);
  border: 1px solid #cbd5dd;
  border-radius: var(--radius);
  background: #fbfefe;
  overflow: hidden;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.mnk-definition {
  margin: 0;
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: #f3faf8;
  color: #2d3b43;
  padding: 12px 14px;
  font-size: 0.94rem;
  line-height: 1.55;
}

.mnk-definition p {
  margin: 0;
}

.mnk-definition p + p {
  margin-top: 8px;
}

.copyright-note {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.3;
  text-align: right;
}

.visit-counter {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.6rem;
  font-weight: 700;
  line-height: 1.3;
  text-align: right;
}

.consent-banner {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 20;
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 18px 44px rgba(24, 32, 42, 0.2);
  padding: 14px;
}

.consent-banner[hidden] {
  display: none;
}

.consent-banner h2 {
  margin: 0 0 4px;
  color: var(--ink);
  font-size: 0.96rem;
}

.consent-banner p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.4;
}

.consent-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
}

@media (max-width: 700px) {
  .topbar,
  .workspace {
    display: grid;
    grid-template-columns: 1fr;
  }

  .topbar {
    align-items: flex-start;
  }
}

@media (max-width: 680px) {
  .app-shell {
    width: min(100% - 20px, 1440px);
    padding-top: 16px;
  }

  .topbar,
  .panel-heading,
  .measurement-control,
  .consent-banner {
    display: grid;
    grid-template-columns: 1fr;
  }

  .top-actions {
    width: 100%;
  }

  .data-heading-actions {
    justify-content: flex-start;
  }

  .data-status-row {
    justify-content: flex-start;
    text-align: left;
  }

  .button {
    flex: 1 1 140px;
  }

  .consent-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .data-panel,
  .results-panel,
  .chart-panel,
  .definition-panel {
    padding: 14px;
  }
}