/* Sections & Layout Styling */

/* Global Smooth Theme Transition */
body, .site-header, .card, .proof-chip, .about-intro-box, .principle-card, 
.deployment-banner, .skill-category-card, .cred-card, .lab-card, .contact-card, 
.site-footer, .btn, .tech-tag, .skill-pill, .badge, .terminal-box, .theme-toggle-btn {
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

/* 1. Header & Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--header-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  z-index: 900;
  display: flex;
  align-items: center;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.brand-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent-primary);
  background-color: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--accent-primary);
  border-radius: var(--radius-full);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.mobile-menu-toggle {
  display: none;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  padding: 0.4rem;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  cursor: pointer;
}

/* Mobile Navigation Drawer */
.mobile-nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-light);
  padding: var(--space-lg);
  box-shadow: var(--shadow-lg);
  display: none;
  flex-direction: column;
  gap: var(--space-md);
  z-index: 899;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav .nav-link {
  font-size: 1.05rem;
  padding: var(--space-xs) 0;
}

/* 2. Hero Section */
.hero-section {
  padding-top: calc(var(--header-height) + var(--space-2xl));
  padding-bottom: var(--space-2xl);
  background: var(--bg-primary);
}

.hero-status-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}

.hero-title {
  margin-bottom: var(--space-sm);
  max-width: 840px;
  font-size: clamp(2.1rem, 3.8vw, 2.85rem);
  line-height: 1.25;
}

.typewriter-text {
  color: var(--text-primary);
  display: inline;
}

.typewriter-cursor {
  display: inline-block;
  width: 2px;
  height: 1.05em;
  background-color: var(--accent-primary);
  margin-left: 3px;
  vertical-align: -0.12em;
  border-radius: 1px;
  animation: cursorBlink 0.9s infinite ease-in-out;
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .typewriter-cursor {
    display: none !important;
  }
}

.hero-meta-line {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

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

/* 3. About / Background & Narrative Section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: var(--space-2xl);
  align-items: start;
}

.about-intro-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
}

.principles-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.principle-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--shadow-card);
}

.principle-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.principle-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* 4. Practical Cloud Deployment Callout */
.deployment-banner {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.deployment-list {
  list-style: none;
  margin-top: var(--space-sm);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem 1rem;
}

.deployment-list li {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.check-icon {
  color: var(--accent-primary);
  font-weight: 700;
  flex-shrink: 0;
}

/* 5. Grounded Skills Matrix (Clean Pill Tags) */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: var(--space-lg);
}

.skill-category-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-card);
}

.skill-category-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--border-light);
}

.skill-category-header h3 {
  font-size: 1.05rem;
}

.skill-tags-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.skill-pill {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-light);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-sm);
}

.skill-pill.security {
  background-color: var(--security-bg);
  color: var(--security-accent);
  border-color: var(--security-border);
}

.skill-pill.highlight {
  background-color: var(--accent-subtle);
  color: var(--accent-primary);
  border-color: var(--accent-border);
}

/* 6. Achievements & Certifications */
.cred-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-md);
}

.cred-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.cred-icon-wrap {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-sm);
  background-color: var(--accent-subtle);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
}

.cred-provider {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.2rem;
}

.cred-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.cred-desc {
  font-size: 0.825rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: var(--space-sm);
}

/* 7. Labs & In-Progress Grid */
.labs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
}

.lab-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.lab-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.35rem;
}

.lab-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.lab-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-md);
}

.lab-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: auto;
}

/* 8. Contact & Footer */
.contact-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl) var(--space-xl);
  box-shadow: var(--shadow-card);
  text-align: center;
  max-width: 740px;
  margin: 0 auto;
}

.contact-email-bar {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-light);
  padding: 0.35rem 0.5rem 0.35rem 1.15rem;
  border-radius: var(--radius-full);
  margin: var(--space-md) 0 var(--space-lg) 0;
  max-width: 100%;
}

.contact-email-text {
  font-family: var(--font-mono);
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--text-primary);
  user-select: all;
}

.site-footer {
  padding: var(--space-xl) 0;
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-light);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* Responsive Adjustments */
@media (max-width: 860px) {
  .about-grid, .deployment-banner {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .principles-grid {
    grid-template-columns: 1fr;
  }

  .deployment-list {
    grid-template-columns: 1fr;
  }
  
  .nav-links, .header-cta {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
}

@media (max-width: 600px) {
  .proof-strip {
    grid-template-columns: 1fr;
  }
  
  .contact-email-bar {
    flex-direction: column;
    padding: var(--space-md);
    border-radius: var(--radius-md);
  }
}