:root {
  --color-bg: #f7f7f5;
  --color-surface: #ffffff;
  --color-border: #d9d9d4;
  --color-text: #222222;
  --color-text-muted: #6b6b66;
  --color-primary: #2f6f4f;
  --color-primary-contrast: #ffffff;
  --color-danger: #b3452b;
  --color-ascent: #c1440e;
  --color-descent: #2f6f9e;
  --color-notice-bg: #fff4e5;
  --color-notice-border: #e0a458;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --radius-md: 0.5rem;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-header {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.app-header h1 {
  margin: 0;
  font-size: 1.25rem;
}

.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  padding: var(--space-lg);
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
}

.map-section,
.chart-section,
.summary-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

.map-container {
  width: 100%;
  height: 420px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.chart-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm) var(--space-md);
  margin-bottom: var(--space-sm);
}

.chart-header h2 {
  margin: 0;
  font-size: 1rem;
}

.loading-indicator {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.out-of-range-notice {
  margin: 0;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-notice-bg);
  border: 1px solid var(--color-notice-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  width: 100%;
}

.chart-canvas-wrapper {
  position: relative;
  width: 100%;
  height: 320px;
}

.summary-section {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.summary-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  margin: 0;
}

.summary-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.summary-item dt {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.summary-item dd {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
}

.button-row {
  display: flex;
  gap: var(--space-sm);
}

.button-row button {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  font-size: 0.875rem;
}

.button-row button:hover {
  background: var(--color-bg);
}

#reset-button {
  border-color: var(--color-danger);
  color: var(--color-danger);
}

.app-footer {
  padding: var(--space-md) var(--space-lg);
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.app-footer a {
  color: var(--color-primary);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1b1c1a;
    --color-surface: #262723;
    --color-border: #3a3b37;
    --color-text: #ececea;
    --color-text-muted: #a3a39c;
    --color-notice-bg: #3a2c17;
    --color-notice-border: #7a5a2a;
  }
}