/* ========================================
   Engineering / EM Page
   ======================================== */

/* ----------------------------------------
   Hero
   ---------------------------------------- */

.eng-hero {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: var(--space-2xl);
}

.eng-hero-bg {
  position: absolute;
  inset: 0;
  background: var(--color-eng-gradient);
  opacity: 0.06;
  z-index: -1;
}

.eng-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(79, 70, 229, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(124, 58, 237, 0.1) 0%, transparent 50%);
}

.eng-hero-content {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
}

.eng-hero-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-eng-primary);
  background: rgba(79, 70, 229, 0.1);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}

.eng-hero-title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  background: var(--color-eng-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.eng-hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .eng-hero-title {
    font-size: 3.5rem;
  }
}

/* ----------------------------------------
   Career Timeline
   ---------------------------------------- */

.timeline-section {
  padding: var(--space-2xl) 0;
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-lg) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: var(--space-md);
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-eng-gradient);
}

@media (min-width: 768px) {
  .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }
}

.timeline-item {
  position: relative;
  padding-left: calc(var(--space-md) + var(--space-lg));
  margin-bottom: var(--space-xl);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(var(--space-md) - 5px);
  top: var(--space-sm);
  width: 12px;
  height: 12px;
  background: var(--color-eng-primary);
  border-radius: 50%;
  border: 2px solid var(--color-surface);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

@media (min-width: 768px) {
  .timeline-item {
    width: 45%;
    padding-left: 0;
    padding-right: var(--space-lg);
  }

  .timeline-item::before {
    left: auto;
    right: calc(-6px - 1px);
  }

  .timeline-item:nth-child(even) {
    margin-left: 55%;
    padding-left: var(--space-lg);
    padding-right: 0;
  }

  .timeline-item:nth-child(even)::before {
    left: calc(-6px - 1px);
    right: auto;
  }
}

.timeline-period {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-eng-primary);
  margin-bottom: var(--space-xs);
}

.timeline-company {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.timeline-role {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.timeline-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.timeline-details li {
  font-size: 0.875rem;
  color: var(--color-text);
  padding-left: var(--space-md);
  position: relative;
}

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

/* ----------------------------------------
   Personal Projects
   ---------------------------------------- */

.projects-section {
  padding: var(--space-2xl) 0;
}

.project-card {
  max-width: 800px;
  margin: 0 auto;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--color-eng-primary);
  overflow: hidden;
  transition: box-shadow var(--transition-base);
}

.project-card:hover {
  box-shadow: var(--shadow-md);
}

.project-card-header {
  padding: var(--space-lg);
}

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

.project-card-name {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--color-eng-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.project-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-eng-primary);
  padding: var(--space-xs) var(--space-sm);
  background: rgba(79, 70, 229, 0.08);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.project-card-link:hover {
  background: rgba(79, 70, 229, 0.16);
}

.project-card-description {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: var(--space-sm);
}

.project-card-note {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-style: italic;
}

.project-card-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: rgba(79, 70, 229, 0.03);
  border-top: 1px solid rgba(79, 70, 229, 0.08);
}

@media (max-width: 600px) {
  .project-card-details {
    grid-template-columns: 1fr;
  }
}

.project-card-subtitle {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-eng-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

.project-card-feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.project-card-feature-list li {
  font-size: 0.875rem;
  color: var(--color-text);
  padding-left: var(--space-md);
  position: relative;
}

.project-card-feature-list li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--color-eng-primary);
}

.project-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* ----------------------------------------
   Skills Grid
   ---------------------------------------- */

.skills-section {
  background: var(--color-bg-alt);
  padding: var(--space-2xl) 0;
}

.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
}

.skill-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border-top: 3px solid var(--color-eng-primary);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.skill-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.skill-card-title {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-eng-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

.skill-card-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.skill-tag {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  background: rgba(79, 70, 229, 0.08);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
}

/* ----------------------------------------
   Management Philosophy
   ---------------------------------------- */

.management-section {
  padding: var(--space-2xl) 0;
}

.management-content {
  max-width: 800px;
  margin: 0 auto;
}

.management-pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.pillar-card {
  text-align: center;
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.pillar-icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.pillar-title {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: var(--space-sm);
}

.pillar-description {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ----------------------------------------
   Domain Knowledge
   ---------------------------------------- */

.domain-section {
  background: var(--color-bg-alt);
  padding: var(--space-2xl) 0;
}

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

.domain-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  font-size: 0.9375rem;
  font-weight: 500;
}

/* ----------------------------------------
   Certifications
   ---------------------------------------- */

.cert-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  max-width: 600px;
  margin: 0 auto;
}

.cert-item {
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  font-size: 0.9375rem;
}

/* ----------------------------------------
   CTA
   ---------------------------------------- */

.cta-section {
  background: var(--color-bg-alt);
  padding: var(--space-2xl) 0;
  text-align: center;
}

.cta-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  background: var(--color-lang-gradient);
  color: white;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.cta-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.cta-description {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: var(--space-lg);
}