/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius-md);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  outline: none;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: white;
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-dark);
  border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Skills */
.skills-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-xl);
  align-items: start;
}

.skills-text h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

.skills-text p {
  margin-bottom: var(--spacing-md);
}

.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.skill-category h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--primary-color);
}

.skill-item {
  margin-bottom: var(--spacing-md);
}

.skill-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xs);
}

.skill-icon-name {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.skill-icon-name i {
  font-size: 1.5rem;
}

.skill-info h5 {
  font-weight: 600;
}

.skill-bar {
  height: 10px;
  background-color: var(--bg-gray);
  border-radius: var(--border-radius-full);
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background-color: var(--primary-color);
  border-radius: var(--border-radius-full);
  width: 0;
  transition: width 1.5s ease-in-out;
}

/* Projects */
.projects-filter {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.filter-btn {
  padding: 0.5rem 1.5rem;
  border: none;
  background-color: var(--bg-gray);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  font-weight: 500;
  transition: all var(--transition-normal);
}

.filter-btn:hover {
  background-color: var(--primary-light);
  color: white;
}

.filter-btn.active {
  background-color: var(--primary-color);
  color: white;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.project-card {
  background-color: var(--bg-light);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

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

.project-img {
  position: relative;
  overflow: hidden;
  height: 220px;
}

.project-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.project-card:hover .project-img img {
  transform: scale(1.1);
}

.project-category {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background-color: var(--primary-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.project-content {
  padding: var(--spacing-lg);
}

.project-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.project-desc {
  margin-bottom: var(--spacing-md);
  color: var(--text-muted);
}

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

.tech-tag {
  background-color: var(--bg-gray);
  padding: 0.25rem 0.5rem;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
}

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

.project-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: 500;
}

.project-link i {
  font-size: var(--font-size-sm);
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::after {
  content: '';
  position: absolute;
  width: 4px;
  background-color: var(--bg-gray);
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.timeline-item:nth-child(odd) {
  left: 0;
}

.timeline-item:nth-child(even) {
  left: 50%;
}

.timeline-item::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: var(--primary-color);
  top: 0;
  z-index: 1;
}

.timeline-item:nth-child(odd)::after {
  right: -12px;
}

.timeline-item:nth-child(even)::after {
  left: -12px;
}

.timeline-content {
  background-color: var(--bg-light);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  position: relative;
  transition: all var(--transition-normal);
}

.timeline-content:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.timeline-date {
  display: inline-block;
  background-color: var(--primary-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
}

.timeline-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.timeline-company {
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: var(--spacing-md);
}

.timeline-desc {
  margin-bottom: var(--spacing-md);
}

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

.timeline-tag {
  background-color: var(--bg-gray);
  padding: 0.25rem 0.5rem;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
}

/* Contact */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-2xl);
}

.contact-info h3,
.contact-form h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

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

.contact-details {
  margin-bottom: var(--spacing-xl);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact-item i {
  font-size: var(--font-size-xl);
  color: var(--primary-color);
  margin-top: 5px;
}

.contact-item h4 {
  font-size: var(--font-size-md);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

input, textarea {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--bg-gray);
  border-radius: var(--border-radius-md);
  background-color: var(--bg-gray);
  color: var(--text-dark);
  font-family: var(--font-primary);
  transition: all var(--transition-fast);
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

textarea {
  min-height: 150px;
  resize: vertical;
}

/* Achievements */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.achievement-card {
  background-color: var(--bg-light);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.achievement-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.achievement-icon {
  width: 80px;
  height: 80px;
  background-color: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg);
}

.achievement-icon i {
  font-size: 2rem;
  color: white;
}

.achievement-card h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-dark);
}

.achievement-card p {
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
}

.achievement-year {
  display: inline-block;
  background-color: var(--bg-gray);
  padding: 0.25rem 1rem;
  border-radius: var(--border-radius-full);
  font-weight: 500;
}

/* Certifications */
.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.certification-card {
  background-color: var(--bg-light);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.certification-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.certification-logo {
  height: 200px;
  overflow: hidden;
}

.certification-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.certification-content {
  padding: var(--spacing-lg);
}

.certification-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--text-dark);
}

.certification-content p {
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
}

.certification-details {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.certification-details span {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--text-muted);
}

.certification-details i {
  color: var(--primary-color);
}