/* Profile Header */
.profile-header {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.profile-photo {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-full);
  border: 3px solid var(--color-accent-primary);
  overflow: hidden;
  flex-shrink: 0;
}

.profile-photo img,
.profile-photo svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-info h1 {
  margin-bottom: var(--space-2);
}

.profile-title {
  font-size: var(--text-lg);
  color: var(--color-accent-primary);
  margin-bottom: var(--space-3);
}

.profile-summary {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  max-width: 600px;
}

/* Experience Timeline */
.timeline {
  position: relative;
  padding-left: var(--space-8);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-8);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: calc(-1 * var(--space-8) + 4px);
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: var(--radius-full);
  background: var(--color-bg-primary);
  border: 2px solid var(--color-accent-primary);
  z-index: 1;
}

.timeline-item:first-child .timeline-dot {
  background: var(--color-accent-primary);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.timeline-header h3 {
  font-size: var(--text-lg);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.timeline-role {
  font-weight: var(--weight-semibold);
  color: var(--color-accent-primary);
  font-size: var(--text-base);
  margin-bottom: var(--space-3);
}

.timeline-details {
  list-style: none;
}

.timeline-details li {
  position: relative;
  padding-left: var(--space-4);
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.timeline-details li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-text-tertiary);
}

/* Skills Grid */
.skills-section {
  margin-top: var(--space-16);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-6);
}

.skill-category h4 {
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* Certifications */
.certifications-section {
  margin-top: var(--space-16);
}

.cert-list {
  display: grid;
  gap: var(--space-3);
}

.cert-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.cert-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  cursor: pointer;
  font-weight: var(--weight-medium);
  transition: background var(--transition-fast);
  list-style: none;
}

.cert-item summary::-webkit-details-marker {
  display: none;
}

.cert-item summary::after {
  content: '+';
  font-size: var(--text-lg);
  color: var(--color-text-tertiary);
  transition: transform var(--transition-fast);
}

.cert-item[open] summary::after {
  content: '-';
}

.cert-item summary:hover {
  background: var(--color-bg-tertiary);
}

.cert-item-title {
  flex: 1;
}

.cert-item-issuer {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  margin-left: var(--space-4);
}

.cert-details {
  padding: 0 var(--space-6) var(--space-4);
  border-top: 1px solid var(--color-border);
}

.cert-details p {
  font-size: var(--text-sm);
  margin-top: var(--space-3);
}

.cert-details a {
  color: var(--color-accent-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Education */
.education-section {
  margin-top: var(--space-16);
}

.education-list {
  display: grid;
  gap: var(--space-4);
}

.education-item {
  padding: var(--space-4) var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.education-item h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
}

.education-item p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

@media (max-width: 768px) {
  .profile-header {
    flex-direction: column;
    text-align: center;
  }

  .profile-summary {
    margin: 0 auto;
  }

  .timeline-header {
    flex-direction: column;
  }
}