/* FrugalNick applets — shared styling */
:root {
  --fn-teal: #2a9d8f;
  --fn-teal-dark: #238b7e;
  --fn-teal-soft: #e8f6f4;
  --fn-text: #1a1a1a;
  --fn-muted: #666;
  --fn-light: #888;
  --fn-border: #ddd;
  --fn-bg: #f8f9fa;
  --fn-white: #fff;
  --fn-radius: 8px;
  --fn-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --fn-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--fn-font);
  color: var(--fn-text);
  background: #f5f5f5;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--fn-teal);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.fn-header {
  background: var(--fn-white);
  border-bottom: 1px solid var(--fn-border);
  padding: 16px 24px;
}

.fn-header-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.fn-logo {
  font-weight: 600;
  font-size: 18px;
  color: var(--fn-text);
}

.fn-logo span {
  color: var(--fn-teal);
}

.fn-back {
  font-size: 14px;
  color: var(--fn-muted);
}

.fn-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 24px 48px;
}

.fn-page-title {
  margin: 0 0 8px;
  font-size: 28px;
  font-weight: 700;
}

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

.fn-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.fn-card {
  background: var(--fn-white);
  border-radius: var(--fn-radius);
  box-shadow: var(--fn-shadow);
  padding: 24px;
  transition: transform 0.15s, box-shadow 0.15s;
}

.fn-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.fn-card h2 {
  margin: 0 0 8px;
  font-size: 20px;
}

.fn-card p {
  margin: 0 0 16px;
  color: var(--fn-muted);
  font-size: 14px;
}

.fn-card-link {
  display: inline-block;
  background: var(--fn-teal);
  color: white;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
}

.fn-card-link:hover {
  background: var(--fn-teal-dark);
  text-decoration: none;
}

.fn-calc {
  background: var(--fn-white);
  border-radius: var(--fn-radius);
  box-shadow: var(--fn-shadow);
  padding: 28px;
}

.fn-calc h1 {
  margin: 0 0 4px;
  font-size: 24px;
}

.fn-calc .fn-subtitle {
  margin: 0 0 24px;
  color: var(--fn-muted);
  font-size: 14px;
}

.fn-field {
  margin-bottom: 18px;
}

.fn-field label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
}

.fn-field input,
.fn-field select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--fn-border);
  border-radius: 6px;
  font-size: 16px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.fn-field input:focus,
.fn-field select:focus {
  border-color: var(--fn-teal);
}

.fn-row {
  display: flex;
  gap: 16px;
}

.fn-row > .fn-field {
  flex: 1;
}

.fn-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  margin-bottom: 18px;
}

.fn-checkbox input {
  width: auto;
}

.fn-results {
  background: var(--fn-bg);
  border-radius: var(--fn-radius);
  padding: 20px;
  margin-top: 24px;
}

.fn-results h3 {
  margin: 0 0 16px;
  font-size: 16px;
}

.fn-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}

.fn-stat {
  text-align: center;
}

.fn-stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--fn-teal);
  margin: 0;
}

.fn-stat-label {
  font-size: 12px;
  color: var(--fn-muted);
  margin: 4px 0 0;
}

.fn-table-wrap {
  overflow-x: auto;
  margin-top: 24px;
}

.fn-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.fn-table th,
.fn-table td {
  padding: 10px 12px;
  text-align: right;
  border-bottom: 1px solid var(--fn-border);
}

.fn-table th:first-child,
.fn-table td:first-child {
  text-align: left;
}

.fn-table th {
  background: var(--fn-bg);
  font-weight: 600;
  color: var(--fn-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.fn-table tr.ineligible td {
  color: var(--fn-light);
}

.fn-chart-wrap {
  margin-top: 24px;
  height: 280px;
  position: relative;
}

.fn-share {
  margin-top: 20px;
  text-align: center;
}

.fn-share button,
.fn-btn {
  background: var(--fn-teal);
  color: white;
  border: none;
  padding: 10px 18px;
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  font-weight: 500;
}

.fn-share button:hover,
.fn-btn:hover {
  background: var(--fn-teal-dark);
}

.fn-error {
  background: #fef2f2;
  color: #b91c1c;
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 14px;
  margin-top: 16px;
}

.fn-footer {
  text-align: center;
  margin-top: 32px;
  font-size: 12px;
  color: var(--fn-light);
}

@media (max-width: 600px) {
  .fn-row {
    flex-direction: column;
    gap: 0;
  }

  .fn-container {
    padding: 20px 16px 40px;
  }

  .fn-calc {
    padding: 20px 16px;
  }
}