:root {
  --bg-deep: #0a0c10;
  --bg-surface: #12151c;
  --bg-card: #161a24;
  --border-subtle: rgba(0, 212, 255, 0.12);
  --border-accent: rgba(0, 212, 255, 0.35);
  --glow-cyan: rgba(0, 212, 255, 0.4);
  --glow-cyan-soft: rgba(0, 212, 255, 0.08);
  --text-primary: #e8ecf4;
  --text-secondary: #9ca3b4;
  --text-muted: #6b7280;
  --accent: #00d4ff;
  --accent-hover: #33ddff;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Source Code Pro", monospace;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --header-h: 64px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--glow-cyan));
  z-index: 200;
  pointer-events: none;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-deep);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  animation: fadeIn 0.25s ease-out;
}

body.page-exit {
  animation: fadeOut 0.2s ease-in forwards;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, transparent 0%, rgba(0, 212, 255, 0.06) 15%, rgba(0, 212, 255, 0.18) 50%, rgba(0, 212, 255, 0.06) 85%, transparent 100%),
    linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px),
    linear-gradient(180deg, var(--border-subtle) 1px, transparent 1px);
  background-size: 100% 45%, 48px 48px, 48px 48px;
  background-position: 50% -45%, 0 0, 0 0;
  background-repeat: no-repeat, repeat, repeat;
  opacity: 0.85;
  animation: tech-bg-wave 8s ease-in-out infinite;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(ellipse 80% 50% at 50% -20%, var(--glow-cyan-soft), transparent 50%);
  opacity: 0.6;
}

@keyframes tech-bg-wave {
  0%, 100% { background-position: 50% -45%, 0 0, 0 0; }
  50% { background-position: 50% 145%, 0 0, 0 0; }
}

@media (prefers-reduced-motion: reduce) {
  body::before {
    animation: none;
    background-position: 50% 50%, 0 0, 0 0;
  }

  body {
    animation: none;
  }

  body.page-exit {
    animation: none;
  }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
}

.site-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.site-brand:hover {
  opacity: 0.85;
}

.site-brand-logo {
  display: block;
  height: 40px;
  width: 40px;
  object-fit: contain;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-primary);
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.site-header.nav-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.nav-open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.site-header.nav-open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 640px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: var(--space-md);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.3s ease, opacity 0.2s ease;
  }

  .site-header.nav-open .site-nav {
    max-height: 280px;
    opacity: 1;
  }

  .site-nav a {
    display: block;
    padding: var(--space-md);
    border-radius: var(--radius-sm);
  }

  .site-nav a:hover {
    background: var(--glow-cyan-soft);
  }
}

.site-nav {
  display: flex;
  gap: var(--space-md);
}

.site-nav a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--accent);
  background: var(--glow-cyan-soft);
  box-shadow: 0 0 0 1px var(--border-accent);
}

.site-nav a:focus-visible {
  outline: none;
}

.page-home .site-nav a[href="/"],
.page-projects .site-nav a[href="/projects/"],
.page-resume .site-nav a[href="/resume/"],
.page-about .site-nav a[href="/about/"],
.page-contact .site-nav a[href="/contact/"] {
  color: var(--accent);
  background: var(--glow-cyan-soft);
}

.page-main {
  position: relative;
  z-index: 1;
  flex: 1;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg) var(--space-3xl);
}

.site-footer {
  position: relative;
  z-index: 1;
  padding: var(--space-lg) var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-copy {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-links a {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.875rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-links svg {
  flex-shrink: 0;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: #4ade80;
  background: rgba(74, 222, 128, 0.06);
  border: 1px solid rgba(74, 222, 128, 0.25);
  border-radius: 999px;
  margin-bottom: var(--space-lg);
  letter-spacing: 0.03em;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 6px #4ade80;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero {
  padding-bottom: var(--space-xl);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  margin-bottom: var(--space-xs);
}

.hero-title {
  font-size: 1.35rem;
  color: var(--accent);
  margin-top: 0;
  margin-bottom: var(--space-lg);
  font-family: var(--font-mono);
  min-height: 1.8em;
  visibility: hidden;
}

.hero-title::after {
  content: "|";
  opacity: 1;
  animation: blink 0.9s step-end infinite;
}

.hero-title.typed::after {
  display: none;
}

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

.hero-summary {
  font-size: 1.05rem;
  max-width: 52ch;
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.hero-looking {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
}

.hero-looking a {
  color: var(--accent);
  text-decoration: none;
}

.hero-looking a:hover {
  text-decoration: underline;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.page-home .hero {
  text-align: center;
}

.page-home .hero .status-badge {
  margin-left: auto;
  margin-right: auto;
}

.page-home .hero .hero-summary {
  margin-left: auto;
  margin-right: auto;
}

.page-home .hero .hero-looking {
  margin-left: auto;
  margin-right: auto;
}

.page-home .cta-group {
  justify-content: center;
}

.page-home .stats-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
}

.page-home .stats-row .stat-card {
  min-width: 140px;
}

.page-home .reveal h2 {
  text-align: center;
}

.page-home .skill-group {
  text-align: center;
}

.page-home .skill-category-label {
  text-align: center;
}

.page-home .skills-grid {
  justify-content: center;
}

.page-home .highlight-card {
  text-align: left;
}

.page-home .project-grid {
  justify-content: center;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.revealed {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

.skill-group {
  margin-bottom: var(--space-lg);
}

.skill-category-label {
  display: block;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.highlight-card {
  display: flex;
  gap: var(--space-xl);
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-lg);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.highlight-card:hover {
  box-shadow: 0 0 28px var(--glow-cyan-soft);
  border-color: var(--accent);
}

.highlight-number {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--border-accent);
  line-height: 1;
  flex-shrink: 0;
  width: 2.5rem;
}

.highlight-body {
  flex: 1;
  min-width: 0;
}

.highlight-body h3 {
  margin-top: 0;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.highlight-body p {
  margin-bottom: var(--space-md);
}

.highlight-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.highlight-tags .skill-tag {
  font-size: 0.75rem;
  padding: 2px var(--space-sm);
}

.project-preview {
  display: block;
  text-decoration: none;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: 0;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.project-preview:hover {
  border-color: var(--border-accent);
  box-shadow: 0 0 28px var(--glow-cyan-soft);
  transform: translateY(-2px);
}

.project-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
}

.project-preview-header h3 {
  margin: 0;
  color: var(--text-primary);
  transition: color 0.2s ease;
}

.project-preview:hover .project-preview-header h3 {
  color: var(--accent);
}

.project-arrow {
  font-size: 1.25rem;
  color: var(--text-muted);
  transition: color 0.2s ease, transform 0.2s ease;
}

.project-preview:hover .project-arrow {
  color: var(--accent);
  transform: translate(2px, -2px);
}

.project-preview p {
  font-size: 0.9rem;
  margin-bottom: var(--space-md);
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.tech-tags span {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 2px var(--space-sm);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin: var(--space-2xl) 0;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
  border-color: var(--border-accent);
  box-shadow: 0 0 20px var(--glow-cyan-soft);
}

.stat-number {
  display: block;
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
  font-family: var(--font-mono);
}

.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.skill-tag {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--accent);
  background: var(--glow-cyan-soft);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.skill-tag:hover {
  border-color: var(--border-accent);
  box-shadow: 0 0 12px var(--glow-cyan-soft);
}

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

.project-preview {
  display: block;
  text-decoration: none;
  margin-bottom: 0;
}

.project-preview h3 {
  margin-top: 0;
  color: var(--text-primary);
  transition: color 0.2s ease;
}

.project-preview:hover h3 {
  color: var(--accent);
}

.project-preview p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

h1, h2, h3 {
  font-weight: 600;
  line-height: 1.25;
  color: var(--text-primary);
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border-subtle);
}

h3 {
  font-size: 1.15rem;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

p {
  margin: 0 0 var(--space-md);
  color: var(--text-secondary);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-hover);
}

.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--bg-deep);
  background: var(--accent);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  background: var(--accent-hover);
  box-shadow: 0 0 20px var(--glow-cyan);
}

.btn:focus-visible {
  outline: none;
}

.btn-outline {
  color: var(--accent);
  background: transparent;
  box-shadow: 0 0 0 1px var(--border-accent);
}

.btn-outline:hover,
.btn-outline:focus-visible {
  background: var(--glow-cyan-soft);
  box-shadow: 0 0 0 1px var(--accent), 0 0 16px var(--glow-cyan-soft);
}

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

.contact-form label:first-of-type {
  margin-top: 0;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  max-width: 400px;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text-primary);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--glow-cyan-soft);
}

.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form .btn {
  margin-top: var(--space-lg);
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.contact-links a {
  color: var(--accent);
  text-decoration: none;
}

.contact-links a:hover {
  text-decoration: underline;
}

.github-section {
  margin-bottom: var(--space-2xl);
}

.github-section h2 {
  margin-bottom: var(--space-lg);
}

.github-intro {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: var(--space-lg);
}

.github-cards {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  align-items: flex-start;
  margin-bottom: var(--space-md);
}

.github-pins-heading {
  font-size: 1.125rem;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.github-pins {
  margin-bottom: var(--space-md);
}

.github-card-link {
  display: block;
}

.github-card-img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  min-height: 120px;
  background: var(--bg-card);
}

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

.github-fallback a {
  color: var(--accent);
  text-decoration: none;
}

.github-fallback a:hover {
  text-decoration: underline;
}

.case-study-lead {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
}

.architecture-diagram {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--accent);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  overflow-x: auto;
  margin: 0 0 var(--space-lg);
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.card:hover {
  border-color: var(--border-accent);
  box-shadow: 0 0 24px var(--glow-cyan-soft);
}

.timeline {
  margin-bottom: var(--space-2xl);
}

.timeline h2 {
  margin-bottom: var(--space-xl);
}

.timeline-list {
  position: relative;
  padding-left: var(--space-xl);
  border-left: 2px solid var(--border-accent);
  margin-left: 8px;
}

.timeline-item {
  position: relative;
  margin-left: calc(-1 * var(--space-xl));
  padding-left: var(--space-xl);
  border-left: 3px solid var(--accent);
  margin-bottom: var(--space-xl);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-xl) - 6px);
  top: 1.5rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--glow-cyan);
}

.timeline-date {
  display: inline-block;
  font-size: 0.875rem;
  color: var(--accent);
  background: var(--glow-cyan-soft);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
}

.timeline-item h3 {
  margin: 0 0 var(--space-xs);
  font-size: 1.125rem;
}

.timeline-company {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin: 0 0 var(--space-md);
}

.timeline-item ul {
  margin: 0;
  padding-left: var(--space-lg);
}

.timeline-item li {
  margin-bottom: var(--space-sm);
}

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

.cert-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.cert-badge {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  min-width: 200px;
}

.cert-in-progress {
  border-color: var(--border-accent);
  animation: cert-pulse 2.5s ease-in-out infinite;
}

@keyframes cert-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 212, 255, 0.2); }
  50% { box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.08); }
}

.cert-name {
  display: block;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.cert-date {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.learning-heading {
  font-size: 1rem;
  color: var(--accent);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.learning-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.learning-item {
  position: relative;
  padding-left: var(--space-lg);
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.learning-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

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

.resume-embed {
  padding: 0;
  overflow: hidden;
}

.resume-embed iframe {
  display: block;
}

ul {
  margin: 0 0 var(--space-md);
  padding-left: 1.25rem;
  color: var(--text-secondary);
}

li {
  margin-bottom: var(--space-xs);
}

@media (max-width: 640px) {
  .site-header {
    padding: 0 var(--space-md);
  }

  .site-nav {
    gap: var(--space-sm);
  }

  .site-nav a {
    font-size: 0.85rem;
  }

  .page-main {
    padding: var(--space-xl) var(--space-md) var(--space-2xl);
  }

  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .project-grid {
    grid-template-columns: 1fr;
  }

  .highlight-card {
    flex-direction: column;
    gap: var(--space-md);
  }

  .highlight-number {
    font-size: 1.25rem;
  }

  .footer-inner {
    justify-content: center;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }
}