:root {
  --bg: #f7f9fc;
  --surface: #ffffff;
  --surface-soft: #f2f6fb;
  --text: #172033;
  --muted: #65758b;
  --line: #dbe3ee;
  --primary: #1f6feb;
  --primary-dark: #1558c0;
  --primary-soft: #e8f1ff;
  --success: #16845f;
  --warning: #b7791f;
  --shadow: 0 16px 40px rgba(23, 32, 51, 0.08);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
select {
  font: inherit;
}

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 64px;
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 24px;
  align-items: stretch;
  margin-bottom: 26px;
}

.intro h1 {
  max-width: 760px;
  margin: 10px 0 14px;
  font-size: clamp(2rem, 4vw, 4.25rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.intro p {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

.eyebrow {
  display: inline-flex;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.intro-panel {
  display: grid;
  align-content: center;
  gap: 10px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.panel-icon,
.section-icon {
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 8px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 800;
}

.intro-panel strong {
  font-size: 1.15rem;
}

.intro-panel span:last-child {
  color: var(--muted);
  line-height: 1.5;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.card,
.result {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 10px 28px rgba(23, 32, 51, 0.05);
}

.card {
  padding: 22px;
}

.card-wide {
  grid-column: 1 / -1;
}

.card-heading {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.card-heading h2 {
  margin: 0 0 4px;
  font-size: 1.1rem;
}

.card-heading p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.fields-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.fields-grid.compact {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

label {
  display: grid;
  gap: 8px;
  color: #334155;
  font-size: 0.92rem;
  font-weight: 650;
}

.optional {
  color: var(--muted);
  font-weight: 500;
}

input,
select {
  width: 100%;
  min-height: 46px;
  border: 1px solid #cfd9e6;
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  padding: 0 13px;
  outline: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

input:focus,
select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(31, 111, 235, 0.12);
}

.radio-group {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.radio-group label,
.check-row {
  display: flex;
  min-height: 48px;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
  padding: 12px;
}

.radio-group input,
.check-row input {
  width: 18px;
  min-height: 18px;
}

.hidden {
  display: none !important;
}

.actions {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: flex-end;
  padding: 8px 0 0;
}

.form-message {
  flex: 1;
  margin: 0;
  color: #b42318;
  font-weight: 650;
}

.primary-button,
.secondary-button {
  min-height: 48px;
  cursor: pointer;
  border: 0;
  border-radius: 8px;
  font-weight: 800;
  letter-spacing: 0;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.primary-button {
  min-width: 220px;
  background: var(--primary);
  color: #fff;
  padding: 0 24px;
  text-transform: uppercase;
}

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

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

.secondary-button {
  border: 1px solid #c8d4e3;
  background: #fff;
  color: var(--primary);
  padding: 0 18px;
}

.result {
  margin-top: 30px;
  padding: 24px;
}

.result-heading {
  display: flex;
  gap: 20px;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.result-heading h2 {
  margin: 8px 0 4px;
  font-size: 1.8rem;
}

.result-heading p {
  margin: 0;
  color: var(--muted);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.summary-card {
  display: grid;
  gap: 10px;
  min-height: 118px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.summary-card span {
  color: var(--muted);
  font-weight: 650;
}

.summary-card strong {
  font-size: 1.35rem;
}

.summary-card.total {
  border-color: rgba(31, 111, 235, 0.35);
  background: var(--primary-soft);
}

.summary-card.total strong {
  color: var(--primary-dark);
}

.chart-card,
.notes-card {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.chart-card {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 22px;
  align-items: center;
  padding: 20px;
}

.donut-chart {
  width: 220px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: conic-gradient(var(--primary) 0 100%);
  position: relative;
}

.donut-chart::after {
  content: "";
  position: absolute;
  inset: 48px;
  border-radius: 50%;
  background: #fff;
  box-shadow: inset 0 0 0 1px var(--line);
}

.chart-legend {
  display: grid;
  gap: 12px;
}

.legend-item {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  color: var(--muted);
}

.legend-dot {
  width: 14px;
  height: 14px;
  border-radius: 99px;
}

.legend-item strong {
  color: var(--text);
}

.notes-card {
  padding: 20px;
}

.notes-card h3 {
  margin: 0 0 12px;
}

.notes-card ul {
  margin: 0 0 16px;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.6;
}

.notes-card p {
  margin: 0;
  padding: 14px;
  border-radius: 8px;
  background: #fff8eb;
  color: #5f4108;
  line-height: 1.55;
}

@media (max-width: 920px) {
  .intro,
  .form-grid,
  .summary-grid,
  .chart-card {
    grid-template-columns: 1fr;
  }

  .fields-grid,
  .fields-grid.compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .chart-card {
    justify-items: center;
  }

  .chart-legend {
    width: 100%;
  }
}

@media (max-width: 620px) {
  .app-shell {
    width: min(100% - 20px, 1180px);
    padding-top: 24px;
  }

  .card,
  .result {
    padding: 16px;
  }

  .fields-grid,
  .fields-grid.compact,
  .radio-group {
    grid-template-columns: 1fr;
  }

  .actions,
  .result-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .donut-chart {
    width: min(220px, 74vw);
  }
}