/* ===== Section Styles ===== */
section {
  padding: var(--space-2xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-tag {
  display: inline-block;
  padding: 0.375rem 1rem;
  background: var(--bg-layer-2);
  color: var(--sea-green);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  font-size: var(--font-size-base);
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto;
}

/* ===== About Section ===== */
.about { background: var(--bg-layer-1); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

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

.about-text {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.about-text strong { color: var(--sea-green); }

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.stat-card {
  text-align: center;
  padding: var(--space-md);
  background: var(--bg-layer-2);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  background: var(--bg-layer-3);
}

.stat-number {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--sea-green);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.about-visual { display: flex; justify-content: center; }
.visual-card { width: 100%; max-width: 400px; }

.code-snippet {
  background: var(--bg-layer-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.code-header {
  display: flex;
  gap: 6px;
  padding: var(--space-sm);
  background: var(--bg-layer-3);
}

.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot-red { background: var(--punch-red); }
.dot-yellow { background: var(--amber-glow); }
.dot-green { background: var(--sea-green); }

.code-content {
  padding: var(--space-md);
  font-family: 'Fira Code', monospace;
  font-size: 0.875rem;
  line-height: 1.8;
  overflow-x: auto;
}

.code-keyword { color: var(--punch-red); }
.code-variable { color: var(--text-primary); }
.code-property { color: var(--sea-green); }
.code-string { color: var(--amber-glow); }
.code-boolean { color: var(--punch-red); }

/* ===== Experience Section ===== */
.experience { background: var(--bg-base); }

.experience-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 800px;
  margin: 0 auto;
}

.experience-card {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--bg-layer-1);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}

.experience-card:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-md);
  background: var(--bg-layer-2);
}

.experience-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--sea-green), #25a89c);
  border-radius: var(--radius-md);
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(46, 196, 182, 0.3);
}

.experience-icon svg { width: 24px; height: 24px; stroke: var(--bg-base); }

.experience-icon.icon-secondary {
  background: linear-gradient(135deg, var(--punch-red), #c41829);
  box-shadow: 0 4px 12px rgba(231, 29, 54, 0.3);
}

.experience-icon.icon-tertiary {
  background: linear-gradient(135deg, var(--amber-glow), #e68a00);
  box-shadow: 0 4px 12px rgba(255, 159, 28, 0.3);
}

.experience-content { flex: 1; }

.experience-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-xs);
}

.experience-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.experience-date {
  font-size: 0.875rem;
  color: var(--sea-green);
  font-weight: 500;
}

.experience-company {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

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

@media (max-width: 600px) {
  .experience-card { flex-direction: column; text-align: center; }
  .experience-icon { margin: 0 auto; }
  .experience-header { justify-content: center; }
}

/* ===== Certifications Section ===== */
.certifications { background: var(--bg-layer-1); }

.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-md);
}

.cert-card {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--bg-layer-2);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}

.cert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  background: var(--bg-layer-3);
}

.cert-card.featured {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--bg-layer-2), var(--bg-layer-3));
  border-left: 3px solid var(--sea-green);
}

@media (max-width: 768px) {
  .cert-card.featured { grid-column: span 1; }
}

.cert-badge {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--sea-green), #25a89c);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.cert-badge svg { width: 22px; height: 22px; stroke: var(--bg-base); }

.cert-badge.badge-secondary {
  background: linear-gradient(135deg, var(--punch-red), #c41829);
}

.cert-badge.badge-tertiary {
  background: linear-gradient(135deg, var(--amber-glow), #e68a00);
}

.cert-content { flex: 1; min-width: 0; }
.cert-title { font-size: 1rem; font-weight: 600; margin-bottom: 0.25rem; }
.cert-issuer { font-size: 0.875rem; color: var(--text-secondary); }
.cert-date { font-size: 0.75rem; color: var(--sea-green); margin-bottom: var(--space-xs); }

.cert-skills { display: flex; flex-wrap: wrap; gap: 0.25rem; }

.cert-tag {
  padding: 0.15rem 0.5rem;
  background: var(--bg-layer-4);
  font-size: 0.65rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.cert-more {
  text-align: center;
  margin-top: var(--space-lg);
}

.cert-additional {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-style: italic;
}

/* ===== Skills Section ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}

.skill-card {
  padding: var(--space-lg);
  background: var(--bg-layer-1);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}

.skill-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  background: var(--bg-layer-2);
}

.skill-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--sea-green), #25a89c);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  box-shadow: 0 4px 12px rgba(46, 196, 182, 0.3);
}

.skill-icon svg { width: 24px; height: 24px; stroke: var(--bg-base); }

.skill-icon.icon-secondary {
  background: linear-gradient(135deg, var(--punch-red), #c41829);
  box-shadow: 0 4px 12px rgba(231, 29, 54, 0.3);
}

.skill-icon.icon-tertiary {
  background: linear-gradient(135deg, var(--amber-glow), #e68a00);
  box-shadow: 0 4px 12px rgba(255, 159, 28, 0.3);
}

.skill-title { font-size: var(--font-size-lg); font-weight: 600; margin-bottom: var(--space-xs); }
.skill-desc { font-size: var(--font-size-sm); color: var(--text-muted); margin-bottom: var(--space-md); }
.skill-tags { display: flex; flex-wrap: wrap; gap: var(--space-xs); }

.tag {
  padding: 0.25rem 0.75rem;
  background: var(--bg-layer-3);
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

/* ===== Projects Section ===== */
.projects { background: var(--bg-layer-1); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

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

.project-card {
  background: var(--bg-layer-2);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.project-card.featured { grid-column: span 2; }

@media (max-width: 900px) {
  .project-card.featured { grid-column: span 1; }
}

.project-image { position: relative; height: 200px; overflow: hidden; }
.project-card.featured .project-image { height: 280px; }

.project-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--bg-layer-3), var(--bg-layer-4));
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-placeholder svg { width: 64px; height: 64px; stroke: var(--sea-green); opacity: 0.5; }
.project-placeholder.placeholder-secondary svg { stroke: var(--punch-red); }
.project-placeholder.placeholder-tertiary svg { stroke: var(--amber-glow); }

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(1, 22, 39, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-base);
}

.project-card:hover .project-overlay { opacity: 1; }

.project-link {
  padding: 0.75rem 1.5rem;
  background: var(--sea-green);
  color: var(--bg-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  transform: translateY(20px);
  transition: var(--transition-base);
}

.project-card:hover .project-link { transform: translateY(0); }

.project-content { padding: var(--space-md); }
.project-meta { display: flex; justify-content: space-between; margin-bottom: var(--space-xs); font-size: 0.75rem; color: var(--text-muted); }
.project-category { color: var(--sea-green); font-weight: 500; }
.project-title { font-size: var(--font-size-lg); font-weight: 600; margin-bottom: var(--space-xs); }
.project-desc { font-size: var(--font-size-sm); color: var(--text-secondary); margin-bottom: var(--space-md); }
.project-tech { display: flex; flex-wrap: wrap; gap: var(--space-xs); }

.tech-tag {
  padding: 0.25rem 0.5rem;
  background: var(--bg-layer-3);
  font-size: 0.7rem;
  border-radius: var(--radius-sm);
  color: var(--sea-green);
}

/* ===== Contact Section ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-xl);
}

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.info-card {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--bg-layer-1);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}

.info-card:hover { transform: translateX(8px); box-shadow: var(--shadow-md); }

.info-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-layer-2);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.info-icon svg { width: 24px; height: 24px; stroke: var(--sea-green); }
.info-content h4 { font-size: 0.875rem; color: var(--text-muted); margin-bottom: 0.25rem; }
.info-content a, .info-content p { color: var(--text-primary); font-weight: 500; }
.info-content a:hover { color: var(--sea-green); }

.social-links { display: flex; gap: var(--space-sm); margin-top: var(--space-lg); }

.social-link {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-layer-1);
  border-radius: var(--radius-md);
  transition: var(--transition-base);
}

.social-link svg { width: 20px; height: 20px; fill: var(--text-secondary); transition: var(--transition-fast); }

.social-link:hover { background: var(--sea-green); transform: translateY(-4px); }
.social-link:hover svg { fill: var(--bg-base); }

/* ===== Contact Form ===== */
.contact-form {
  padding: var(--space-lg);
  background: var(--bg-layer-1);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.form-group { margin-bottom: var(--space-md); }
.form-group label { display: block; margin-bottom: var(--space-xs); font-size: 0.875rem; font-weight: 500; color: var(--text-secondary); }

.form-group input, .form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--bg-layer-2);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: var(--font-size-sm);
  transition: var(--transition-fast);
}

.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--sea-green); background: var(--bg-layer-3); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-error { display: block; margin-top: 0.25rem; font-size: 0.75rem; color: var(--punch-red); }

/* ===== Footer ===== */
.footer { padding: var(--space-lg) 0; background: var(--bg-layer-1); text-align: center; color: var(--text-muted); font-size: 0.875rem; }

/* ===== Animations ===== */
.animate-on-scroll { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.animate-on-scroll.animated { opacity: 1; transform: translateY(0); }

/* ===== 20:9 Tall Smartphone Screens (max-width: 430px) ===== */
@media (max-width: 430px) {
  /* Section base styles */
  section {
    padding: var(--space-xl) 0;
  }

  .section-header {
    margin-bottom: var(--space-lg);
    padding: 0 var(--space-xs);
  }

  .section-tag {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
  }

  .section-title {
    font-size: var(--font-size-xl);
    line-height: 1.3;
  }

  .section-subtitle {
    font-size: var(--font-size-sm);
    max-width: 100%;
    padding: 0 var(--space-xs);
  }

  /* About Section */
  .about-grid {
    gap: var(--space-lg);
  }

  .about-text {
    font-size: var(--font-size-sm);
    line-height: 1.6;
  }

  .about-stats {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
  }

  .stat-card {
    padding: var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: var(--space-sm);
    text-align: left;
  }

  .stat-number {
    font-size: var(--font-size-lg);
    min-width: 50px;
  }

  .stat-label {
    font-size: 0.7rem;
  }

  .visual-card {
    max-width: 100%;
  }

  .code-content {
    font-size: 0.75rem;
    line-height: 1.6;
    padding: var(--space-sm);
  }

  /* Experience Section */
  .experience-timeline {
    gap: var(--space-sm);
  }

  .experience-card {
    padding: var(--space-md);
    flex-direction: column;
    text-align: center;
    gap: var(--space-sm);
  }

  .experience-icon {
    width: 40px;
    height: 40px;
    margin: 0 auto;
  }

  .experience-icon svg {
    width: 20px;
    height: 20px;
  }

  .experience-header {
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
  }

  .experience-title {
    font-size: var(--font-size-base);
  }

  .experience-date {
    font-size: 0.75rem;
  }

  .experience-company,
  .experience-location {
    font-size: 0.8rem;
  }

  /* Certifications Section */
  .certifications-grid {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .cert-card {
    padding: var(--space-sm);
    gap: var(--space-sm);
  }

  .cert-card.featured {
    grid-column: span 1;
  }

  .cert-badge {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
  }

  .cert-badge svg {
    width: 18px;
    height: 18px;
  }

  .cert-title {
    font-size: 0.9rem;
    line-height: 1.3;
  }

  .cert-issuer {
    font-size: 0.8rem;
  }

  .cert-date {
    font-size: 0.7rem;
  }

  .cert-tag {
    font-size: 0.6rem;
    padding: 0.125rem 0.375rem;
  }

  .cert-additional {
    font-size: 0.8rem;
    padding: 0 var(--space-xs);
  }

  /* Skills Section */
  .skills-grid {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .skill-card {
    padding: var(--space-md);
  }

  .skill-icon {
    width: 40px;
    height: 40px;
    margin-bottom: var(--space-sm);
  }

  .skill-icon svg {
    width: 20px;
    height: 20px;
  }

  .skill-title {
    font-size: var(--font-size-base);
  }

  .skill-desc {
    font-size: var(--font-size-sm);
  }

  .tag {
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
  }

  /* Projects Section */
  .projects-grid {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .project-card.featured {
    grid-column: span 1;
  }

  .project-image {
    height: 160px;
  }

  .project-card.featured .project-image {
    height: 180px;
  }

  .project-placeholder svg {
    width: 48px;
    height: 48px;
  }

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

  .project-meta {
    font-size: 0.7rem;
  }

  .project-title {
    font-size: var(--font-size-base);
    line-height: 1.3;
  }

  .project-desc {
    font-size: var(--font-size-sm);
    line-height: 1.5;
  }

  .tech-tag {
    font-size: 0.65rem;
    padding: 0.2rem 0.4rem;
  }

  .project-link {
    padding: 0.5rem 1rem;
    font-size: var(--font-size-sm);
  }

  /* Contact Section */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .info-card {
    padding: var(--space-sm);
    gap: var(--space-sm);
  }

  .info-icon {
    width: 40px;
    height: 40px;
  }

  .info-icon svg {
    width: 20px;
    height: 20px;
  }

  .info-content h4 {
    font-size: 0.8rem;
  }

  .info-content a,
  .info-content p {
    font-size: var(--font-size-sm);
    word-break: break-word;
  }

  .social-links {
    gap: var(--space-xs);
    justify-content: center;
  }

  .social-link {
    width: 40px;
    height: 40px;
  }

  .social-link svg {
    width: 18px;
    height: 18px;
  }

  /* Contact Form */
  .contact-form {
    padding: var(--space-md);
  }

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

  .form-group label {
    font-size: 0.8rem;
  }

  .form-group input,
  .form-group textarea {
    padding: 0.75rem;
    font-size: var(--font-size-sm);
  }

  /* Footer */
  .footer {
    padding: var(--space-md) 0;
    font-size: 0.8rem;
  }
}

/* ===== Ultra-narrow screens (max-width: 360px) ===== */
@media (max-width: 360px) {
  :root {
    --font-size-2xl: clamp(1.35rem, 1.2rem + 0.8vw, 1.75rem);
    --font-size-3xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  }

  .hero-name {
    font-size: 1.5rem;
  }

  .hero-tagline {
    font-size: 0.85rem;
  }

  .about-stats {
    gap: 0.375rem;
  }

  .stat-card {
    padding: 0.5rem;
  }

  .cert-skills {
    gap: 0.2rem;
  }

  .skill-tags,
  .project-tech {
    gap: 0.25rem;
  }
}