:root {
  color-scheme: light;
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-border: #d7dee8;
  --color-text: #17191f;
  --color-text-muted: #5d687a;
  --color-accent-readable: #785b00;
  --font-sans: "Inter", "Noto Sans JP", system-ui, sans-serif;
  --header-height: 56px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --color-bg: #0a0e1a;
  --color-surface: #1a2236;
  --color-border: #2a3550;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-accent-readable: #f3c517;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a {
  color: var(--color-accent-readable);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.legal-header {
  flex-shrink: 0;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: 12px 20px;
}

.legal-header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
}

.legal-header h1 {
  font-size: 1rem;
  font-weight: 600;
}

.legal-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.legal-meta .edition-links {
  display: flex;
  gap: 12px;
}

.legal-viewer {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 16px 20px 24px;
}

.legal-viewer-inner {
  flex: 1;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.legal-pdf-frame {
  flex: 1;
  width: 100%;
  min-height: calc(100vh - var(--header-height) - 80px);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
}

.legal-footer {
  flex-shrink: 0;
  border-top: 1px solid var(--color-border);
  padding: 16px 20px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
}

@media (max-width: 640px) {
  .legal-pdf-frame {
    min-height: 70vh;
  }
}