/* ============================================================
   Silicon Scripted — Portfolio CSS
   Hero, tab navigation, timeline, skill tags, cert cards
   ============================================================ */

/* ── Portfolio Hero ───────────────────────────────────────── */
.portfolio-hero {
  padding-block: clamp(3rem, 8vw, 5rem);
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.portfolio-headshot {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  object-fit: cover;
  margin-inline: auto;
  margin-bottom: 1.25rem;
  border: 2px solid var(--color-border);
}

.portfolio-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 0.5rem;
}

.portfolio-title {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.75rem;
  max-width: none;
  margin-inline: auto;
}

.portfolio-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.375rem 1.25rem;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.25rem;
}

.portfolio-meta a {
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

.portfolio-meta a:hover {
  color: var(--color-text);
  text-decoration: none;
}

.portfolio-social-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  flex-wrap: wrap;
}

.portfolio-social-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.4rem 0.875rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-sm);
  transition: color var(--transition), border-color var(--transition), box-shadow var(--transition);
  text-decoration: none;
}

.portfolio-social-links a:hover {
  color: var(--color-text);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

/* ── Tab Navigation ───────────────────────────────────────── */
.portfolio-tabs-wrapper {
  position: sticky;
  top: var(--nav-height);
  z-index: 50;
  background: var(--color-overlay);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.portfolio-tablist {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.portfolio-tablist::-webkit-scrollbar { display: none; }

.portfolio-tab {
  flex-shrink: 0;
  padding: 1rem 1.125rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.portfolio-tab:hover {
  color: var(--color-text);
}

.portfolio-tab[aria-selected="true"] {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
}

/* ── Tab Panels ───────────────────────────────────────────── */
.portfolio-panel {
  padding-block: clamp(2.5rem, 6vw, 4rem);
}

/* ── About Panel ──────────────────────────────────────────── */
.about-content {
  max-width: 72ch;
}

.about-content p {
  font-size: 1.0625rem;
  line-height: 1.75;
  margin-bottom: 1.25rem;
  color: var(--color-text-secondary);
  max-width: 100%;
}

.about-content p:last-child { margin-bottom: 0; }

/* ── Skills Panel ─────────────────────────────────────────── */
.skills-groups {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.skill-group-title {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  font-family: var(--font-mono);
  margin-bottom: 0.75rem;
}

/* ── Experience Panel — Timeline ──────────────────────────── */
.timeline {
  position: relative;
  padding-left: 2rem;
}

/* Vertical line */
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 0;
  width: 1px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: 2.5rem;
}

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

/* Dot */
.timeline-item::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 6px;
  width: 9px;
  height: 9px;
  background: var(--color-surface-2);
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  transform: translateX(-4px);
}

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

.timeline-header {
  margin-bottom: 0.75rem;
}

.timeline-role {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.2rem;
}

.timeline-company {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.2rem;
}

.timeline-dates {
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  color: var(--color-text-tertiary);
}

.timeline-current {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(50, 215, 75, 0.12);
  padding: 0.15rem 0.5rem;
  border-radius: 100px;
  border: 1px solid rgba(50, 215, 75, 0.25);
  margin-left: 0.5rem;
  vertical-align: middle;
}

.timeline-bullets {
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.timeline-bullets li {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  padding-left: 1rem;
  position: relative;
  line-height: 1.6;
}

.timeline-bullets li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.timeline-tech-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-tertiary);
  font-family: var(--font-mono);
  margin-bottom: 0.5rem;
}

/* ── Projects Panel ───────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (max-width: 767px) {
  .projects-grid { grid-template-columns: 1fr; }
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.project-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.project-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text);
}

.project-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  max-width: none;
  margin: 0;
  flex: 1;
}

.project-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
}

.project-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-blue);
  text-decoration: none;
}

.project-link:hover { text-decoration: underline; }

/* ── Certifications Panel ─────────────────────────────────── */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

@media (max-width: 1023px) {
  .certs-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 639px) {
  .certs-grid { grid-template-columns: 1fr; }
}

.cert-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  box-shadow: var(--shadow-sm);
}

.cert-issuer {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  font-family: var(--font-mono);
}

.cert-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.35;
}

.cert-date {
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
  font-family: var(--font-mono);
  margin-top: auto;
  padding-top: 0.5rem;
}

.cert-verify {
  font-size: 0.8125rem;
  color: var(--color-blue);
  text-decoration: none;
}

.cert-verify:hover { text-decoration: underline; }

/* Past exams — collapsible */
.cert-past-exams {
  margin-top: 2rem;
}

.cert-past-exams summary {
  cursor: pointer;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  padding: 0.75rem 0;
  border-top: 1px solid var(--color-border);
  user-select: none;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cert-past-exams summary::before {
  content: '+';
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-weight: 700;
  width: 1em;
  text-align: center;
}

.cert-past-exams[open] summary::before {
  content: '−';
}

.past-exam-item {
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--color-border);
}

.past-exam-item:last-child { border-bottom: none; }

.past-exam-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.past-exam-meta {
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
  font-family: var(--font-mono);
  margin-bottom: 0.5rem;
}

.past-exam-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  max-width: none;
  margin: 0;
}

/* ── Education Panel ──────────────────────────────────────── */
.education-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 640px;
  box-shadow: var(--shadow-sm);
}

.education-degree {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.education-school {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.875rem;
}

.education-areas-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  font-family: var(--font-mono);
  margin-bottom: 0.625rem;
}

@media (max-width: 767px) {
  .timeline { padding-left: 1.5rem; }
  .projects-grid { grid-template-columns: 1fr; }
}