/* ========================================
   Skills Section Components
======================================== */
.skills-section {
  background: var(--dark);
  position: relative;
}

.skills-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 107, 53, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

.skill-category {
  background: var(--dark-secondary);
  padding: var(--space-8);
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(0, 212, 255, 0.1);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.skill-category::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.05), transparent);
  transition: left var(--transition-slow);
}

.skill-category:hover::before {
  left: 100%;
}

.skill-category:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: var(--shadow-xl);
}

.category-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.category-header i {
  font-size: var(--fs-2xl);
  color: var(--primary);
}

.category-header h3 {
  font-family: var(--font-primary);
  font-size: var(--fs-xl);
  color: var(--text-primary);
}

.skills-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.skill-item {
  position: relative;
}

.skill-name {
  display: block;
  font-family: var(--font-primary);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.skill-bar {
  height: 8px;
  background: var(--dark-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.skill-progress {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 1s ease-out;
  position: relative;
}

.skill-progress::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: progress-shimmer 2s infinite;
}

@keyframes progress-shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* ========================================
   Technology Stack Timeline
======================================== */
.tech-stack {
  background: var(--dark-tertiary);
  padding: var(--space-8);
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(0, 212, 255, 0.1);
}

.tech-stack h3 {
  font-family: var(--font-primary);
  font-size: var(--fs-2xl);
  color: var(--text-primary);
  text-align: center;
  margin-bottom: var(--space-8);
}

.stack-timeline {
  display: flex;
  gap: var(--space-8);
  position: relative;
}

.stack-timeline::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-primary);
  transform: translateY(-50%);
  z-index: 1;
}

.timeline-item {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 2;
}

.timeline-item::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  background: var(--dark-secondary);
  border: 3px solid var(--primary);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
}

.timeline-item.active::before {
  background: var(--primary);
  box-shadow: 0 0 20px var(--primary);
  animation: pulse 2s infinite;
}

.timeline-year {
  font-family: var(--font-primary);
  font-size: var(--fs-lg);
  color: var(--primary);
  font-weight: 700;
  margin-bottom: var(--space-6);
}

.timeline-content {
  background: var(--dark);
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(0, 212, 255, 0.1);
  margin-top: var(--space-6);
}

.timeline-content h4 {
  font-family: var(--font-primary);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
}

.tech-tag {
  padding: var(--space-1) var(--space-3);
  background: rgba(0, 212, 255, 0.1);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-family: var(--font-primary);
  border: 1px solid rgba(0, 212, 255, 0.2);
  transition: all var(--transition-normal);
}

.tech-tag:hover {
  background: var(--primary);
  color: var(--dark);
  transform: scale(1.05);
}

/* ========================================
   Experience Section
======================================== */
.experience-section {
  background: var(--dark-secondary);
}

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

.experience-timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gradient-primary);
  transform: translateX(-50%);
}

.experience-item {
  position: relative;
  margin-bottom: var(--space-12);
  width: 50%;
}

.experience-item:nth-child(odd) {
  left: 0;
  padding-right: var(--space-8);
}

.experience-item:nth-child(even) {
  left: 50%;
  padding-left: var(--space-8);
}

.experience-item::before {
  content: '';
  position: absolute;
  top: 20px;
  width: 16px;
  height: 16px;
  background: var(--primary);
  border: 4px solid var(--dark-secondary);
  border-radius: 50%;
  z-index: 2;
}

.experience-item:nth-child(odd)::before {
  right: -8px;
}

.experience-item:nth-child(even)::before {
  left: -8px;
}

.experience-card {
  background: var(--dark-tertiary);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(0, 212, 255, 0.1);
  transition: all var(--transition-normal);
}

.experience-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(0, 212, 255, 0.3);
}

.experience-header {
  margin-bottom: var(--space-6);
}

.experience-title {
  font-family: var(--font-primary);
  font-size: var(--fs-xl);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.experience-company {
  font-size: var(--fs-lg);
  color: var(--primary);
  margin-bottom: var(--space-2);
}

.experience-duration {
  font-family: var(--font-primary);
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

.experience-description {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.experience-skills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.experience-skill {
  padding: var(--space-1) var(--space-3);
  background: rgba(0, 255, 136, 0.1);
  color: var(--accent);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-family: var(--font-primary);
  border: 1px solid rgba(0, 255, 136, 0.2);
}

/* ========================================
   Projects Section
======================================== */
.projects-section {
  background: var(--dark);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-8);
}

.project-card {
  background: var(--dark-secondary);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  border: 1px solid rgba(0, 212, 255, 0.1);
  transition: all var(--transition-normal);
  position: relative;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(0, 212, 255, 0.3);
}

.project-image {
  position: relative;
  height: 200px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.project-image::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
  transition: opacity var(--transition-normal);
}

.project-card:hover .project-image::before {
  opacity: 0;
}

.project-icon {
  font-size: var(--fs-5xl);
  color: white;
  z-index: 2;
}

.project-content {
  padding: var(--space-8);
}

.project-header {
  margin-bottom: var(--space-6);
}

.project-title {
  font-family: var(--font-primary);
  font-size: var(--fs-xl);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.project-category {
  font-size: var(--fs-sm);
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-description {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.project-tech-item {
  padding: var(--space-1) var(--space-3);
  background: rgba(255, 107, 53, 0.1);
  color: var(--secondary);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-family: var(--font-primary);
  border: 1px solid rgba(255, 107, 53, 0.2);
}

.project-links {
  display: flex;
  gap: var(--space-4);
}

.project-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  color: var(--text-secondary);
  text-decoration: none;
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: var(--fs-sm);
  transition: all var(--transition-normal);
}

.project-link:hover {
  background: var(--primary);
  color: var(--dark);
  transform: translateY(-2px);
}

/* ========================================
   Learning Section
======================================== */
.learning-section {
  background: var(--dark-secondary);
}

.learning-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

.learning-card {
  background: var(--dark-tertiary);
  padding: var(--space-8);
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(0, 212, 255, 0.1);
  text-align: center;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.learning-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: conic-gradient(transparent, var(--primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
  animation: rotate 4s linear infinite;
}

.learning-card:hover::before {
  opacity: 0.1;
}

.learning-card:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: var(--shadow-xl);
}

.learning-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
  font-size: var(--fs-3xl);
  color: white;
  position: relative;
  z-index: 2;
}

.learning-title {
  font-family: var(--font-primary);
  font-size: var(--fs-xl);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.learning-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

.learning-progress {
  background: var(--dark);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 212, 255, 0.1);
}

.progress-label {
  display: flex;
  justify-content: between;
  font-family: var(--font-primary);
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}

.progress-bar {
  height: 6px;
  background: var(--dark-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
  transition: width 1s ease-out;
}

/* ========================================
   Contact Section
======================================== */
.contact-section {
  background: var(--dark);
  position: relative;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.contact-info {
  position: sticky;
  top: 100px;
}

.contact-title {
  font-family: var(--font-primary);
  font-size: var(--fs-3xl);
  color: var(--text-primary);
  margin-bottom: var(--space-6);
}

.contact-description {
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--dark-secondary);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(0, 212, 255, 0.1);
  transition: all var(--transition-normal);
}

.contact-method:hover {
  background: var(--dark-tertiary);
  border-color: rgba(0, 212, 255, 0.3);
  transform: translateX(10px);
}

.contact-method-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-lg);
  color: white;
}

.contact-method-content h4 {
  font-family: var(--font-primary);
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.contact-method-content p {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
}

.contact-form {
  background: var(--dark-secondary);
  padding: var(--space-8);
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(0, 212, 255, 0.1);
}

.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-family: var(--font-primary);
  font-size: var(--fs-sm);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-4);
  background: var(--dark-tertiary);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-secondary);
  font-size: var(--fs-base);
  transition: all var(--transition-normal);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-button {
  width: 100%;
  padding: var(--space-4);
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: var(--fs-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.form-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

/* ========================================
   Responsive Design
======================================== */

@media (max-width: 1024px) {
  .stack-timeline {
    flex-direction: column;
    gap: var(--space-6);
  }
  
  .stack-timeline::before {
    top: 0;
    left: 20px;
    width: 2px;
    height: 100%;
  }
  
  .timeline-item::before {
    top: 20px;
    left: 12px;
    transform: translateX(-50%);
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  
  .contact-info {
    position: static;
  }
}

@media (max-width: 768px) {
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .experience-timeline::before {
    left: 20px;
  }
  
  .experience-item {
    width: 100%;
    left: 0;
    padding-left: var(--space-12);
    padding-right: 0;
  }
  
  .experience-item::before {
    left: 12px;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .learning-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-methods {
    gap: var(--space-4);
  }
  
  .contact-method {
    padding: var(--space-4);
  }
}