:root {
  --color-bg: #f2f7fc;
  --color-surface: #ffffff;
  --color-border: #dbe8f4;
  --color-text: #1f2a37;
  --color-text-muted: #64748b;

  --color-primary: #2f7dd6;
  --color-primary-dark: #1f5fab;
  --color-primary-light: #e8f2fc;

  --color-teal: #14a394;
  --color-teal-light: #e3f7f4;

  --color-accent: #ff9645;
  --color-accent-dark: #dd7620;
  --color-highlight-bg: #fff2e2;

  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
}

.site-header {
  padding: 32px 20px 24px;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.site-header h1 {
  margin: 0 0 8px;
  font-size: 1.6rem;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 10px;
  color: var(--color-primary-dark);
}

.header-icon {
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.header-title {
  text-align: left;
}

.badge {
  display: inline-block;
  margin-left: 4px;
  font-size: 0.6rem;
  vertical-align: middle;
  background: var(--color-accent);
  color: #fff;
  border-radius: 999px;
  padding: 2px 10px;
}

.lead {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 60px;
}

section {
  margin-bottom: 28px;
}

.search-panel {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
}

.field {
  flex: 1 1 200px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

select {
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 1rem;
  background: #fff;
  color: var(--color-text);
}

select:disabled {
  background: #f0f4f8;
  color: var(--color-text-muted);
}

.result-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}

.result-panel h2 {
  margin-top: 0;
  font-size: 1.2rem;
  color: var(--color-primary-dark);
}

.price-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin: 16px 0 24px;
}

.price-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  background: var(--color-primary-light);
}

.price-card.teal {
  background: var(--color-teal-light);
}

.price-card.highlight {
  background: var(--color-highlight-bg);
}

.card-icon {
  width: 34px;
  height: 34px;
  margin: 0 auto 8px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  color: var(--color-primary);
}

.price-card.teal .card-icon {
  color: var(--color-teal);
}

.price-card.highlight .card-icon {
  color: var(--color-accent-dark);
}

.price-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.price-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.price-card.teal .price-value {
  color: var(--color-teal);
}

.price-card.highlight .price-value {
  color: var(--color-accent-dark);
}

.price-unit {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.price-range {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px dashed var(--color-border);
}

.point-level-note {
  margin: 0 0 12px;
  padding: 10px 14px;
  background: var(--color-primary-light);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--color-primary-dark);
}

.chart-wrap {
  position: relative;
  height: 280px;
  margin: 16px 0 24px;
}

.map-wrap {
  margin: 0 0 24px;
}

#area-map {
  height: 260px;
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.map-note {
  margin: 6px 0 0;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.nta-link-wrap {
  text-align: center;
  padding-top: 8px;
  border-top: 1px dashed var(--color-border);
}

.nta-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-accent);
  color: #fff;
  padding: 12px 24px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.nta-button:hover {
  background: var(--color-accent-dark);
}

.nta-note {
  margin: 10px 0 0;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.no-data-panel {
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  color: var(--color-text-muted);
}

.no-data-panel svg {
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.no-data-panel h2 {
  margin: 8px 0 6px;
  font-size: 1.1rem;
  color: var(--color-text);
}

.no-data-panel p {
  margin: 0 0 18px;
  font-size: 0.9rem;
}

.nta-button-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--color-primary-dark);
  border: 1px solid var(--color-primary);
  padding: 10px 20px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
}

.nta-button-outline:hover {
  background: var(--color-primary-light);
}

.notice-panel, .articles-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.notice-panel h2, .articles-panel h2 {
  font-size: 1rem;
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-primary-dark);
}

.notice-panel h2 svg, .articles-panel h2 svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

.notice-panel ul {
  margin: 0;
  padding-left: 1.2em;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.article-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.article-list li + li {
  margin-top: 8px;
}

.article-list a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-primary-dark);
  text-decoration: none;
  font-weight: 600;
}

.article-list a svg {
  color: var(--color-teal);
  flex-shrink: 0;
}

.article-list a:hover {
  text-decoration: underline;
}

.site-footer {
  text-align: center;
  padding: 20px;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
}

.site-footer p {
  margin: 2px 0;
}

@media (max-width: 480px) {
  .site-header h1 {
    font-size: 1.3rem;
  }

  main {
    padding: 16px 12px 48px;
  }

  .search-panel,
  .result-panel,
  .notice-panel,
  .articles-panel {
    padding: 16px;
  }
}