/* Layout - Elegant Academic Design */

body {
  background-color: var(--color-bg);
  background-image:
    radial-gradient(circle at 20% 50%, rgba(193, 120, 23, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(139, 69, 19, 0.03) 0%, transparent 50%);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.site-header {
  background: linear-gradient(to bottom, var(--color-bg), var(--color-bg-secondary));
  border-bottom: 3px solid var(--color-border-accent);
  padding: var(--space-lg) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background-color: rgba(253, 251, 247, 0.92);
  box-shadow: 0 4px 20px rgba(139, 69, 19, 0.05);
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.site-title h1 {
  font-size: var(--font-size-2xl);
  font-family: var(--font-serif);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-xs);
  letter-spacing: -0.01em;
}

.site-title h1 a {
  color: var(--color-text);
  transition: color var(--transition-base);
  border-bottom: none;
}

.site-title h1 a:hover {
  color: var(--color-primary);
}

.site-title .initial {
  color: var(--color-accent);
  font-size: 1.3em;
  font-weight: var(--font-weight-bold);
}

.tagline {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin: 0;
  font-family: var(--font-sans);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.02em;
}

/* Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-list {
  display: flex;
  gap: var(--space-sm);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list li::before {
  content: none;
}

.nav-list a {
  font-family: var(--font-sans);
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  border-bottom: 2px solid transparent;
  position: relative;
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: linear-gradient(to right, var(--color-accent), var(--color-primary));
  transition: width var(--transition-base);
}

.nav-list a:hover::after,
.nav-list a.active::after {
  width: 80%;
}

.nav-list a:hover,
.nav-list a.active {
  color: var(--color-primary);
  background-color: var(--color-highlight);
  border-bottom-color: transparent;
}

/* Main Content */
.main-content {
  flex: 1;
  width: 100%;
}

.page-container {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg);
}

.page-title {
  font-size: var(--font-size-4xl);
  font-family: var(--font-serif);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 3px solid var(--color-border-accent);
  position: relative;
}

.page-title::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 80px;
  height: 3px;
  background: linear-gradient(to right, var(--color-accent), transparent);
}

.content {
  max-width: 100%;
}

/* Footer */
.site-footer {
  background: linear-gradient(to bottom, var(--color-bg-secondary), var(--color-bg-tertiary));
  border-top: 3px solid var(--color-border-accent);
  padding: var(--space-2xl) 0;
  margin-top: var(--space-3xl);
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  text-align: center;
}

.footer-text {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-sm);
  font-family: var(--font-sans);
}

.footer-credits {
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  font-family: var(--font-sans);
}

.footer-credits a {
  color: var(--color-accent);
  font-weight: var(--font-weight-medium);
}

.footer-credits a:hover {
  color: var(--color-accent-dark);
}

/* Decorative elements */
.decorative-line {
  height: 2px;
  background: linear-gradient(to right, transparent, var(--color-accent-light), transparent);
  margin: var(--space-2xl) auto;
  max-width: 200px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  .site-title h1 {
    font-size: var(--font-size-xl);
  }

  .main-nav {
    width: 100%;
    flex-direction: column;
    gap: var(--space-md);
  }

  .nav-list {
    flex-wrap: wrap;
    gap: var(--space-xs);
    width: 100%;
  }

  .nav-list a {
    font-size: var(--font-size-sm);
    padding: var(--space-sm);
  }

  .page-container {
    padding: var(--space-xl) var(--space-md);
  }

  .page-title {
    font-size: var(--font-size-3xl);
  }

  h1 {
    font-size: var(--font-size-3xl);
  }

  h2 {
    font-size: var(--font-size-2xl);
  }

  h3 {
    font-size: var(--font-size-xl);
  }
}

@media (max-width: 480px) {
  .site-title h1 {
    font-size: var(--font-size-lg);
  }

  .tagline {
    font-size: var(--font-size-xs);
  }

  .page-title {
    font-size: var(--font-size-2xl);
  }

  .page-container {
    padding: var(--space-lg) var(--space-md);
  }
}

/* Print Styles */
@media print {
  .site-header,
  .site-footer,
  .main-nav {
    display: none;
  }

  body {
    font-size: 11pt;
    line-height: 1.5;
    background: white;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  .page-container {
    max-width: 100%;
    padding: 0;
  }
}