/* ===== Sections: hero, section blocks, timeline, projects, contact ===== */
.section {
  padding: var(--space-3xl) 0;
}

.section--alt {
  background: var(--bg-secondary);
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  margin: 0 0 var(--space-sm);
  letter-spacing: -0.02em;
}

.section__subtitle {
  color: var(--text-secondary);
  margin: 0 0 var(--space-2xl);
  font-size: 1.0625rem;
}

/* ----- Hero ----- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--header-height);
  padding-bottom: var(--space-2xl);
}

.hero__content {
  max-width: 640px;
  margin-inline: auto;
  text-align: center;
}

/* Circular profile photo (higher specificity for GitHub Pages / cache) */
.hero .hero__photo {
  margin: 0 auto var(--space-lg);
  width: 144px;
  height: 144px;
  -webkit-border-radius: 50%;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--border);
  flex-shrink: 0;
  display: block;
}

.hero .hero__photo img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  object-fit: cover;
  display: block;
  -webkit-border-radius: 50%;
  border-radius: 50%;
}

.hero__greeting {
  color: var(--accent);
  font-size: 0.9375rem;
  font-weight: 500;
  margin: 0 0 var(--space-sm);
}

.hero__name {
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 var(--space-md);
}

.hero__tagline {
  color: var(--text-secondary);
  font-size: 1.25rem;
  margin: 0 0 var(--space-md);
}

.hero__bio {
  color: var(--text-secondary);
  margin: 0 auto var(--space-xl);
  max-width: 52ch;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
}

.hero__social {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.scroll-indicator {
  width: 24px;
  height: 40px;
  border: 2px solid var(--border);
  border-radius: 12px;
  position: relative;
}
.scroll-indicator::after {
  content: "";
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--accent);
  border-radius: 2px;
  animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
  50% { opacity: 0.5; transform: translateX(-50%) translateY(8px); }
}

/* ----- Timeline ----- */
.timeline {
  position: relative;
  --timeline-date-width: 9.5rem;
  --timeline-marker-width: 24px;
  --timeline-location-width: 8rem;
  margin-left: -2rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: calc(var(--timeline-date-width) + var(--timeline-marker-width) / 2 - 1px);
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline__item {
  display: grid;
  grid-template-columns: var(--timeline-date-width) var(--timeline-marker-width) 1fr var(--timeline-location-width);
  gap: var(--space-md);
  align-items: start;
  padding-bottom: var(--space-2xl);
  position: relative;
}
.timeline__item:last-child {
  padding-bottom: 0;
}

@media (max-width: 700px) {
  .timeline {
    margin-left: 0;
  }
  .timeline__item {
    grid-template-columns: var(--timeline-date-width) var(--timeline-marker-width) 1fr;
  }
  .timeline__location {
    grid-column: 3;
    grid-row: 2;
    padding-top: 0;
    margin-top: var(--space-xs);
  }
}

/* Phone: date + location on one row, card full width so text isn’t squished */
@media (max-width: 600px) {
  .timeline::before {
    left: calc(var(--timeline-marker-width) / 2 - 1px);
  }
  .timeline__item {
    grid-template-columns: var(--timeline-marker-width) 1fr 1fr;
    grid-template-rows: auto auto;
    gap: var(--space-sm) var(--space-md);
  }
  .timeline__date {
    grid-column: 2;
    grid-row: 1;
    text-align: left;
    font-size: 0.8125rem;
  }
  .timeline__location {
    grid-column: 3;
    grid-row: 1;
    margin-top: 0;
    padding-top: 0;
    text-align: right;
    font-size: 0.8125rem;
  }
  .timeline__marker {
    grid-column: 1;
    grid-row: 2;
    margin-top: 0.5rem;
  }
  .timeline__card {
    grid-column: 2 / -1;
    grid-row: 2;
    min-width: 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding-inline: var(--space-md);
  }
}

.timeline__date {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  padding-top: 0.15rem;
  text-align: right;
  white-space: nowrap;
}

.timeline__marker {
  width: 12px;
  height: 12px;
  margin: 0.4em auto 0;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--bg-secondary);
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal);
}
.timeline__item.reveal-visible .timeline__marker {
  box-shadow: 0 0 0 4px var(--bg-secondary), 0 0 20px var(--accent-glow);
}

.timeline__location {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  padding-top: 0.15rem;
  text-align: left;
}

.timeline__location-line {
  display: block;
}

.timeline__card {
  margin-left: 0;
  min-width: 0;
}

/* ----- Cards (shared) ----- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--space-lg);
  transition: border-color var(--duration-normal), transform var(--duration-normal) var(--ease-out);
}
.card:hover {
  border-color: rgba(34, 211, 200, 0.2);
}

.card__meta {
  display: block;
  font-size: 1rem;
  color: var(--accent);
  margin-bottom: var(--space-xs);
}

.card__meta--edu {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.card__title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 var(--space-sm);
}

.card__gpa {
  color: var(--text-primary);
  font-weight: 600;
}

.card__text .card__gpa {
  color: var(--text-primary);
}

.card__text {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin: 0;
  line-height: 1.55;
}

/* ----- Project grid (3 per row, no scroll) ----- */
.grid {
  display: grid;
  gap: var(--space-xl);
}

.projects-section-wrap {
  position: relative;
}

.projects-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 99;
  display: none;
}

.grid--projects {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  position: relative;
}

@media (max-width: 900px) {
  .grid--projects {
    grid-template-columns: 1fr;
  }
}

.project-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: border-color var(--duration-normal), transform var(--duration-normal) var(--ease-out);
}
.grid--projects .project-card:hover {
  border-color: rgba(34, 211, 200, 0.2);
  transform: translateY(-4px);
}

.project-card__thumb {
  aspect-ratio: 16/10;
  background: var(--bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.project-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.project-card__placeholder {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.project-card__body {
  padding: var(--space-lg);
  flex: 1;
}

.project-card__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 var(--space-sm);
}

.project-card__desc {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin: 0 0 var(--space-md);
  flex: 1;
}

.project-card__links {
  display: flex;
  gap: var(--space-md);
}

.link {
  font-size: 0.875rem;
  font-weight: 500;
}
.link--accent {
  color: var(--accent);
}

/* ----- Outside academic ----- */
.outside-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-lg);
}

.outside-card {
  height: 100%;
}

.outside-card--link {
  text-decoration: none;
  color: inherit;
  display: block;
  transition: transform var(--duration-normal) var(--ease-out), border-color var(--duration-fast), box-shadow var(--duration-fast);
}
.outside-card--link:hover {
  border-color: rgba(34, 211, 200, 0.25);
  box-shadow: 0 0 20px var(--accent-glow);
}
.outside-card--link .card__title {
  color: var(--text-primary);
}
.outside-card--link .card__text {
  color: var(--text-secondary);
}

/* ----- Contact ----- */
.section--contact {
  padding-bottom: var(--space-3xl);
}

.contact-layout {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-xl);
}

.contact-header {
  flex-shrink: 0;
}

.contact-content {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0;
}

.contact-block {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.contact-email {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-primary);
}
.contact-email:hover {
  color: var(--accent);
}

.copy-btn {
  font-size: 0.875rem;
  color: var(--text-secondary);
}
.copy-btn:hover {
  color: var(--accent);
}

.copy-feedback {
  font-size: 0.875rem;
  color: var(--accent);
  min-height: 1.5em;
}

.contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact-resume {
  margin-top: 0;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xl);
}

/* Icon links (LinkedIn, GitHub) */
.icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: color var(--duration-fast), transform var(--duration-fast);
}
.icon-link:hover {
  color: var(--accent);
  transform: translateY(-2px);
}
.icon-link .icon {
  width: 1.5rem;
  height: 1.5rem;
}

.hero__social .icon-link .icon {
  width: 1.375rem;
  height: 1.375rem;
}

.social-link {
  color: var(--text-secondary);
  font-weight: 500;
}
.social-link:hover {
  color: var(--accent);
}