:root {
  --bg: #F6F8F7;
  --card-bg: #FFFFFF;
  --ink: #1F2E2A;
  --muted: #5C6B66;
  --primary: #2E6B5E;
  --primary-dark: #204B41;
  --accent: #C97A3D;
  --border: #E1E7E4;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.page {
  max-width: 560px;
  margin: 0 auto;
  padding: 48px 20px 80px;
}

h1 {
  font-size: 28px;
  margin: 0 0 6px;
  color: var(--primary-dark);
}

.subtitle {
  color: var(--muted);
  margin: 0 0 28px;
  font-size: 15px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  margin-bottom: 20px;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  margin: 16px 0 6px;
}

label:first-of-type {
  margin-top: 0;
}

select, input[type="number"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 15px;
  background: #FBFCFB;
  color: var(--ink);
}

select:focus, input:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}

button {
  margin-top: 22px;
  width: 100%;
  padding: 12px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}

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

.hidden {
  display: none;
}

.result-numbers {
  display: flex;
  gap: 10px;
  margin: 18px 0;
}

.stat {
  flex: 1;
  text-align: center;
  padding: 14px 8px;
  border-radius: 8px;
  background: #F1F5F3;
}

.stat.highlight {
  background: var(--primary);
  color: white;
}

.stat-label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  opacity: 0.75;
  margin-bottom: 4px;
}

.stat-value {
  display: block;
  font-size: 18px;
  font-weight: 700;
}

.note {
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 18px;
}

.disclaimer {
  font-size: 12px;
  color: var(--accent);
  border-top: 1px solid var(--border);
  padding-top: 14px;
  margin-top: 18px;
}

canvas {
  max-height: 260px;
  margin-top: 10px;
}

.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 36px 0 24px;
}

.section-title {
  font-size: 20px;
  margin: 0 0 6px;
  color: var(--primary-dark);
}