/* Custom styles for Christian Castro's portfolio */

:root {
  /* Light theme (default) */
  --bg-color: #ffffff;
  --text-color: #24292e;
  --secondary-text-color: #586069;
  --link-color: #0366d6;
  --border-color: #e1e4e8;
  --card-bg: #ffffff;
  --card-shadow: rgba(0, 0, 0, 0.1);
  --nav-bg: #f6f8fa;
  --hover-bg: #f1f1f1;
  --toggle-bg: #24292e;
  --toggle-color: #ffffff;
}

/* Dark theme */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #0d1117;
    --text-color: #c9d1d9;
    --secondary-text-color: #8b949e;
    --link-color: #58a6ff;
    --border-color: #30363d;
    --card-bg: #161b22;
    --card-shadow: rgba(0, 0, 0, 0.4);
    --nav-bg: #161b22;
    --hover-bg: #21262d;
    --toggle-bg: #f6f8fa;
    --toggle-color: #0d1117;
  }
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

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

a:hover {
  text-decoration: underline;
}

/* Layout and spacing */
.container {
  max-width: 1012px;
  margin: 0 auto;
  padding: 16px;
}

.navigation {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--nav-bg);
  padding: 16px;
  border-radius: 6px;
  margin-bottom: 24px;
  border: 1px solid var(--border-color);
}

.navigation-links {
  display: flex;
  gap: 12px;
  margin: 24px 0;
}

.navigation-links a {
  padding: 8px 12px;
  border-radius: 6px;
  font-weight: 600;
  transition: all 0.2s;
}

.navigation-links a:hover {
  background-color: var(--hover-bg);
  text-decoration: none;
}

/* Profile section */
.profile-section {
  display: flex;
  gap: 24px;
  margin-bottom: 32px;
  align-items: flex-start;
}

.profile-image {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
}

.profile-content {
  flex: 1;
}

.profile-content h1 {
  margin-top: 0;
  color: var(--text-color);
}

.profile-content p {
  color: var(--secondary-text-color);
  margin-bottom: 16px;
}

.social-links {
  display: flex;
  gap: 16px;
  margin-top: 16px;
}

.social-links a {
  color: var(--secondary-text-color);
  transition: color 0.2s;
}

.social-links a:hover {
  color: var(--link-color);
}

/* Project cards */
.project-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.project-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 16px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px var(--card-shadow);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 10px var(--card-shadow);
}

.project-card h3 {
  margin-top: 0;
}

.project-card p {
  color: var(--secondary-text-color);
  margin-bottom: 16px;
}

.project-links {
  display: flex;
  justify-content: space-between;
}

/* Footer */
footer {
  text-align: center;
  padding: 24px 0;
  margin-top: 32px;
  border-top: 1px solid var(--border-color);
  color: var(--secondary-text-color);
}

/* Accessibility */
@media (max-width: 768px) {
  .profile-section {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .social-links {
    justify-content: center;
  }
  
  .project-cards {
    grid-template-columns: 1fr;
  }
}

/* Theme toggle button */
.theme-toggle {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--toggle-bg);
  color: var(--toggle-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 10px var(--card-shadow);
  transition: transform 0.3s ease;
}

.theme-toggle:hover {
  transform: scale(1.1);
}

/* Back link */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding: 6px 12px;
  background-color: var(--nav-bg);
  border-radius: 6px;
  border: 1px solid var(--border-color);
  color: var(--text-color);
  font-weight: 500;
  transition: background-color 0.2s;
}

.back-link:hover {
  background-color: var(--hover-bg);
  text-decoration: none;
}

/* Make sure lists appear properly */
ul, ol {
  padding-left: 2em;
}

p, ul, ol, dl, table, pre, blockquote {
  margin-bottom: 16px;
}

/* Accessibility improvements */
a:focus {
  outline: 2px solid var(--link-color);
  outline-offset: 2px;
}

#theme-toggle:focus {
  outline: 2px solid var(--link-color);
  outline-offset: 2px;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fadeIn {
  animation: fadeIn 0.5s ease-in;
}