/*
 * Component Styles
 */

/*
 * Navigation
 */
.main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(26, 26, 26, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-base);
}

@media (prefers-color-scheme: light) {
  .main-nav {
    background-color: rgba(255, 255, 255, 0.9);
  }
}

.nav-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav-logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav-logo:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-md);
}

.nav-menu a {
  color: var(--color-text-secondary);
  font-weight: 500;
  padding: var(--spacing-xs) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu a:focus {
  color: var(--color-text);
  text-decoration: none;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

.nav-menu a:hover::after,
.nav-menu a:focus::after {
  width: 100%;
}

.nav-menu a.active {
  color: var(--color-text);
}

.nav-menu a.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--color-text);
  transition: all var(--transition-base);
  border-radius: 2px;
}

.nav-toggle[aria-expanded='true'] span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.nav-toggle[aria-expanded='true'] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded='true'] span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

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

  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: 0 var(--spacing-sm);
    gap: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition:
      max-height var(--transition-base),
      opacity var(--transition-base),
      padding-top var(--transition-base),
      padding-bottom var(--transition-base);
  }

  .nav-menu[aria-expanded='true'] {
    max-height: 500px;
    opacity: 1;
    padding-top: var(--spacing-md);
    padding-bottom: var(--spacing-md);
  }

  .nav-menu li {
    padding: var(--spacing-xs) 0;
  }

  .nav-menu a::after {
    display: none;
  }
}

/*
 * Buttons
 */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-base);
  line-height: 1.5;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-text);
  border-color: var(--color-accent);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--color-link-hover);
  border-color: var(--color-link-hover);
  color: var(--color-text);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-text);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background-color: var(--color-text);
  color: var(--color-bg);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/*
 * Project Cards
 */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.project-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--spacing-md);
  transition: all var(--transition-base);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.project-content {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.project-description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-md);
  flex-grow: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background-color: var(--color-bg);
  color: var(--color-text-secondary);
  border-radius: 4px;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.project-links {
  display: flex;
  gap: var(--spacing-sm);
}

.project-link {
  color: var(--color-accent);
  font-weight: 600;
  transition: color var(--transition-fast);
}

.project-link:hover {
  color: var(--color-link-hover);
}

/*
 * Skills
 */
.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.skills-category {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--spacing-md);
}

.skills-category-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.skills-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.skill-tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: var(--color-bg-secondary);
  color: var(--color-text);
  border-radius: 6px;
  font-size: var(--font-size-base);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  background-color: var(--color-accent);
  color: var(--color-text);
  transform: translateY(-2px);
}

/*
 * Experience Timeline
 */
.experience-timeline {
  max-width: 800px;
  margin: var(--spacing-lg) auto 0;
  position: relative;
}

.experience-timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-border);
}

.experience-item {
  position: relative;
  padding-left: 80px;
  margin-bottom: var(--spacing-lg);
}

.experience-item::before {
  content: '';
  position: absolute;
  left: 22px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--color-accent);
  border: 3px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-border);
}

.experience-content {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--spacing-md);
  transition: all var(--transition-base);
}

.experience-content:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.experience-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.experience-company {
  font-size: var(--font-size-lg);
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

.experience-description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

@media (max-width: 768px) {
  .experience-timeline::before {
    left: 20px;
  }

  .experience-item {
    padding-left: 60px;
  }

  .experience-item::before {
    left: 12px;
    width: 14px;
    height: 14px;
  }
}

/*
 * Contact Section
 */
.contact-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.contact-info {
  margin-bottom: var(--spacing-lg);
}

.contact-text {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  font-size: var(--font-size-lg);
  font-weight: 500;
  transition: all var(--transition-base);
}

.contact-link:hover,
.contact-link:focus {
  background-color: var(--color-accent);
  color: var(--color-text);
  border-color: var(--color-accent);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.contact-link svg {
  width: 24px;
  height: 24px;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.social-link {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text-secondary);
  font-weight: 500;
  border-radius: 6px;
  transition: all var(--transition-fast);
}

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

@media (max-width: 480px) {
  .contact-links {
    gap: var(--spacing-sm);
  }

  .contact-link {
    padding: var(--spacing-sm);
    font-size: var(--font-size-base);
  }

  .social-links {
    flex-direction: column;
    align-items: stretch;
  }

  .social-link {
    text-align: center;
  }
}