:root {
  --bg: #FAF5EF;
  --surface: #FFFFFF;
  --border: #D4C5B9;
  --text: #2D2A26;
  --text-muted: #6B5E53;
  --pink: #E8A0BF;
  --purple: #B8A9C9;
  --blue: #A0C4D8;
  --button: #2D2A26;
  --button-text: #FAF5EF;
  --shadow: rgba(45, 42, 38, 0.06);
  --font-heading: Georgia, 'Times New Roman', serif;
  --font-body: system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'Courier New', monospace;
}

[data-theme="dark"] {
  --bg: #1E1B18;
  --surface: #2A2622;
  --border: #3D3630;
  --text: #E8E0D5;
  --text-muted: #9B8E82;
  --pink: #D487A5;
  --purple: #A594B8;
  --blue: #8BAEBF;
  --button: #E8E0D5;
  --button-text: #1E1B18;
  --shadow: rgba(0, 0, 0, 0.2);
}

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

html {
  font-size: 16px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  padding: 2rem 1rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s;
}

a:hover {
  color: var(--pink);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.2rem; }

p { margin-bottom: 1rem; }

nav ul, ol { list-style: none; }

img { max-width: 100%; height: auto; }

.r { color: var(--pink); }
.g { color: var(--purple); }
.b { color: var(--blue); }

.nav {
  background: var(--surface);
  border-bottom: 2px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: bold;
  text-decoration: none;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-toggle {
  background: none;
  border: 2px solid var(--border);
  padding: 0.35rem 0.5rem;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  border-radius: 3px;
  color: var(--text);
  display: flex;
  align-items: center;
  transition: border-color 0.15s;
}

.theme-toggle:hover {
  border-color: var(--pink);
}

html[data-theme="light"] .theme-icon-dark { display: none; }
html[data-theme="dark"] .theme-icon-light { display: none; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-links a {
  text-decoration: none;
  font-size: 0.9rem;
}

.nav-links a:hover {
  text-decoration: underline;
}

.nav-icon {
  display: flex;
  align-items: center;
  color: var(--text-muted);
}

.nav-icon:hover {
  color: var(--text);
}

.nav-toggle {
  display: none;
  background: none;
  border: 2px solid var(--border);
  padding: 0.4rem;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
  border-radius: 3px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 2px solid var(--border);
    gap: 0.75rem;
  }

  .nav-links.open { display: flex; }

  .nav-links a {
    font-size: 1rem;
    padding: 0.5rem 0;
  }
}

.breadcrumbs {
  padding: 0.75rem 1rem 0;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  font-size: 0.85rem;
}

.breadcrumbs ol {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.breadcrumbs li:not(:last-child)::after {
  content: '/';
  margin-left: 0.5rem;
  color: var(--text-muted);
}

.breadcrumbs li a {
  color: var(--text-muted);
}

.pixel-divider {
  width: 100%;
  height: 8px;
  background: repeating-linear-gradient(
    90deg,
    var(--border) 0px,
    var(--border) 4px,
    transparent 4px,
    transparent 8px
  );
}

.stars-divider {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  margin: 2rem 0;
  user-select: none;
}

.footer {
  background: var(--surface);
  border-top: 2px solid var(--border);
  padding: 2rem 1rem;
  margin-top: auto;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.footer-links {
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.footer-links a {
  text-decoration: none;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--text);
  text-decoration: underline;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-bottom .nav-icon {
  display: flex;
  align-items: center;
}

.retro-box {
  border: 2px solid var(--border);
  padding: 1.5rem;
  background: var(--surface);
}

@media (max-width: 768px) {
  main {
    padding: 1.5rem 0.75rem;
  }

  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
}