:root {
  color-scheme: light;
  --bg: #f4f7f6;
  --surface: #ffffff;
  --surface-2: #eef4f2;
  --text: #17211f;
  --muted: #60706b;
  --line: #cddbd6;
  --green: #117864;
  --green-dark: #0d5147;
  --amber: #b97816;
  --danger: #a43b36;
  --shadow: 0 12px 30px rgba(23, 33, 31, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  padding: 24px clamp(18px, 4vw, 48px);
  background: var(--green-dark);
  color: #ffffff;
  border-bottom: 6px solid var(--amber);
}

.topbar h1,
.section-heading h2,
.panel h2,
.rules h2,
.simulator h2 {
  margin: 0;
  letter-spacing: 0;
}

.topbar h1 {
  font-size: clamp(1.65rem, 3vw, 2.55rem);
}

.eyebrow {
  margin: 0 0 4px;
  color: inherit;
  opacity: 0.76;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.status {
  display: grid;
  gap: 2px;
  justify-items: end;
  white-space: nowrap;
}

.status span {
  opacity: 0.8;
  font-size: 0.86rem;
}

main {
  width: min(1180px, calc(100% - 32px));
  margin: 28px auto 56px;
}

.summary-grid,
.simulator-grid,
.rule-columns {
  display: grid;
  gap: 16px;
}

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

.panel,
.rules,
.simulator,
.metric {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.panel {
  padding: 20px;
}

.panel h2,
.panel h3,
.rule-band h3,
.rule-columns h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.panel p,
.rule-band p,
.rule-columns p,
.calculation-notes p {
  margin: 0;
  color: var(--muted);
}

.highlight {
  border-left: 5px solid var(--green);
}

.rules,
.simulator {
  margin-top: 18px;
  padding: 22px;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: end;
  margin-bottom: 18px;
}

.section-heading .eyebrow {
  color: var(--green);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
}

table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  background: var(--surface);
}

th,
td {
  padding: 13px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  background: var(--surface-2);
  color: var(--green-dark);
  font-size: 0.86rem;
}

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

.rule-band {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  margin-top: 18px;
  padding: 18px;
  border: 1px solid #e3d2b8;
  border-radius: 8px;
  background: #fff8ee;
}

.bonus-list {
  display: grid;
  gap: 8px;
  min-width: min(420px, 100%);
}

.bonus-list span {
  display: block;
  padding: 10px 12px;
  border-radius: 6px;
  background: #ffffff;
  border: 1px solid #eed9ba;
  color: #4f3410;
}

.rule-columns {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 16px;
}

.rule-columns article {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-2);
}

.simulator-grid {
  grid-template-columns: 360px minmax(0, 1fr);
  align-items: start;
}

.form-panel {
  display: grid;
  gap: 14px;
  box-shadow: none;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
}

input,
select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  color: var(--text);
  background: #ffffff;
  font: inherit;
}

input:focus,
select:focus {
  outline: 3px solid rgba(17, 120, 100, 0.18);
  border-color: var(--green);
}

.checkbox-row {
  grid-template-columns: 20px 1fr;
  align-items: start;
  font-weight: 600;
}

.checkbox-row input {
  min-height: auto;
  margin-top: 4px;
}

.results {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.metric {
  display: grid;
  gap: 6px;
  min-height: 124px;
  padding: 18px;
  box-shadow: none;
}

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

.metric strong {
  font-size: clamp(1.3rem, 2vw, 1.85rem);
  color: var(--green-dark);
}

.metric small {
  color: var(--muted);
}

.metric.primary {
  grid-column: 1 / -1;
  background: var(--green-dark);
  color: #ffffff;
}

.metric.primary span,
.metric.primary small,
.metric.primary strong {
  color: #ffffff;
}

.calculation-notes {
  display: grid;
  gap: 8px;
  margin-top: 16px;
  padding: 14px 16px;
  border-left: 5px solid var(--amber);
  background: #fffaf2;
  border-radius: 8px;
}

.warning {
  color: var(--danger) !important;
  font-weight: 700;
}

@media (max-width: 900px) {
  .summary-grid,
  .simulator-grid,
  .rule-columns {
    grid-template-columns: 1fr;
  }

  .rule-band,
  .section-heading,
  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  .status {
    justify-items: start;
  }

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