:root {
  --color-bg:        #faf9f7;
  --color-text:      #1c1c1c;
  --color-muted:     #6b6b6b;
  --color-accent:    #8b2635;
  --color-border:    #e0ddd8;
  --color-dark-bg:   #111111;
  --color-dark-text: #f0ede8;

  --font-body:    system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: Georgia, 'Palatino Linotype', 'Book Antiqua', Palatino, serif;

  --size-sm:  0.875rem;
  --size-lg:  1.25rem;
  --size-xl:  1.75rem;

  --space-sm: 0.75rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 5rem;

  --max-width: 860px;
  --transition: 0.2s ease;
}

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

html {
  font-size: 19px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

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

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: block;
}

/* Navigation */
.site-nav {
  background: var(--color-dark-bg);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0 var(--space-md);
}

.site-nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: 0.25rem;
}

.site-nav a {
  color: #a09888;
  font-size: var(--size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: var(--space-sm) var(--space-md);
  display: inline-block;
  position: relative;
  transition: color var(--transition);
}

.site-nav a::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: var(--space-md);
  right: var(--space-md);
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: #fff;
  text-decoration: none;
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

/* Footer */
.site-footer {
  text-align: center;
  padding: var(--space-lg) var(--space-md);
  font-size: var(--size-sm);
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-xl);
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-top: var(--space-sm);
}

.footer-social__link {
  color: var(--color-muted);
  display: flex;
  align-items: center;
  transition: color var(--transition);
}

.footer-social__link:hover {
  color: var(--color-accent);
  text-decoration: none;
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (max-width: 600px) {
  html {
    font-size: 17px;
  }

  .site-nav__inner {
    flex-wrap: wrap;
    gap: 0;
  }

  .site-nav a {
    padding: 0.6rem 0.75rem;
  }
}