:root {
  /* Material 3 Light Theme Colors */
  --md-sys-color-primary: #6750A4;
  --md-sys-color-on-primary: #FFFFFF;
  --md-sys-color-primary-container: #EADDFF;
  --md-sys-color-on-primary-container: #21005D;
  --md-sys-color-secondary: #625B71;
  --md-sys-color-on-secondary: #FFFFFF;
  --md-sys-color-secondary-container: #E8DEF8;
  --md-sys-color-on-secondary-container: #1D192B;
  --md-sys-color-background: #FFFBFE;
  --md-sys-color-on-background: #1C1B1F;
  --md-sys-color-surface: #FFFBFE;
  --md-sys-color-on-surface: #1C1B1F;
  --md-sys-color-surface-variant: #E7E0EC;
  --md-sys-color-on-surface-variant: #49454F;
  --md-sys-color-outline: #79747E;
  
  --app-max-width: 800px;
  --app-radius: 24px;
}

@media (prefers-color-scheme: dark) {
  :root {
    /* Material 3 Dark Theme Colors */
    --md-sys-color-primary: #D0BCFF;
    --md-sys-color-on-primary: #381E72;
    --md-sys-color-primary-container: #4F378B;
    --md-sys-color-on-primary-container: #EADDFF;
    --md-sys-color-secondary: #CCC2DC;
    --md-sys-color-on-secondary: #332D41;
    --md-sys-color-secondary-container: #4A4458;
    --md-sys-color-on-secondary-container: #E8DEF8;
    --md-sys-color-background: #1C1B1F;
    --md-sys-color-on-background: #E6E1E5;
    --md-sys-color-surface: #1C1B1F;
    --md-sys-color-on-surface: #E6E1E5;
    --md-sys-color-surface-variant: #49454F;
    --md-sys-color-on-surface-variant: #CAC4D0;
    --md-sys-color-outline: #938F99;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--md-sys-color-background);
  color: var(--md-sys-color-on-background);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.app-container {
  max-width: var(--app-max-width);
  margin: 0 auto;
  padding: 24px 16px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  margin-bottom: 24px;
  background-color: var(--md-sys-color-surface-variant);
  border-radius: var(--app-radius);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--md-sys-color-primary);
}

.logo h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
}

.logo a {
  text-decoration: none;
  color: inherit;
}

.app-nav a {
  text-decoration: none;
  color: var(--md-sys-color-on-primary-container);
  background-color: var(--md-sys-color-primary-container);
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: opacity 0.2s;
}

.app-nav a:hover {
  opacity: 0.8;
}

.app-content {
  flex-grow: 1;
}

.card {
  background-color: var(--md-sys-color-surface-variant);
  border-radius: var(--app-radius);
  padding: 32px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

@media (max-width: 600px) {
  .card {
    padding: 24px 16px;
  }
}

h1, h2, h3, h4 {
  color: var(--md-sys-color-on-surface);
  line-height: 1.3;
  margin-top: 0;
}

h1 {
  font-size: 2rem;
  margin-bottom: 24px;
  font-weight: 700;
}

h2 {
  font-size: 1.5rem;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--md-sys-color-primary);
}

h3 {
  font-size: 1.25rem;
  margin-top: 32px;
}

p {
  margin-bottom: 16px;
}

a {
  color: var(--md-sys-color-primary);
  text-decoration: none;
  font-weight: 500;
}

a:hover {
  text-decoration: underline;
}

ul, ol {
  padding-left: 24px;
  margin-bottom: 24px;
}

li {
  margin-bottom: 8px;
}

code {
  background-color: rgba(var(--md-sys-color-primary), 0.1);
  color: var(--md-sys-color-on-surface);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.9em;
  background-color: var(--md-sys-color-background);
}

pre {
  background-color: var(--md-sys-color-background);
  padding: 16px;
  border-radius: 12px;
  overflow-x: auto;
  border: 1px solid var(--md-sys-color-outline);
}

pre code {
  background-color: transparent;
  padding: 0;
  color: var(--md-sys-color-on-surface);
}

.app-footer {
  margin-top: 48px;
  text-align: center;
  padding: 24px 0;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.875rem;
}

.app-footer a {
  color: inherit;
  text-decoration: underline;
}

pre {
  position: relative;
}

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  border: none;
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
  font-family: inherit;
}

.copy-btn:hover {
  opacity: 0.8;
}