*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --paper: #f6f0e8;
  --panel: #efe7db;
  --ink: #0f172a;
  --ink-soft: #334155;
  --ink-muted: #475569;
  --accent: #f97316;
  --accent-strong: #ea580c;
  --accent-2: #0ea5a0;
  --card: #ffffff;
  --card-border: rgba(15, 23, 42, 0.12);
  --chip: rgba(15, 23, 42, 0.05);
  --shadow: 0 24px 60px rgba(15, 23, 42, 0.12);
  --font-display: 'Syne', sans-serif;
  --font-body: 'Space Grotesk', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(circle at 15% 20%, rgba(249, 115, 22, 0.14), transparent 40%),
    radial-gradient(circle at 85% 10%, rgba(14, 165, 160, 0.12), transparent 35%),
    linear-gradient(120deg, rgba(15, 23, 42, 0.03) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
  background-size: 18px 18px;
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}

main, header, footer { position: relative; z-index: 1; }

a { color: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(246, 240, 232, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
}

.nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.25rem 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.logo {
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.logo span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.nav-link {
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
  padding-bottom: 0.2rem;
  transition: color 0.25s, border-color 0.25s;
}

.nav-link:hover { color: var(--ink); }
.nav-link.active { color: var(--ink); border-color: var(--accent); }

.nav-cta {
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  border: 1px solid var(--ink);
  color: var(--ink);
  transition: transform 0.25s, background 0.25s, color 0.25s;
}

.nav-cta:hover { transform: translateY(-2px); background: var(--ink); color: var(--paper); }

.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 3rem 5rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 1rem;
}

.hero-status::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--accent-2);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5rem);
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.hero-title em { color: var(--accent); font-style: normal; }

.hero-lead {
  font-size: 1.05rem;
  color: var(--ink-muted);
  max-width: 44ch;
  line-height: 1.8;
}

.hero-actions {
  margin-top: 2.2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  padding: 0.85rem 1.7rem;
  border-radius: 999px;
  transition: transform 0.25s, box-shadow 0.25s, background 0.25s, color 0.25s;
}

.btn.primary {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 14px 30px rgba(249, 115, 22, 0.25);
}

.btn.primary:hover { transform: translateY(-2px); background: var(--accent-strong); }

.btn.ghost {
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
}

.btn.ghost:hover { transform: translateY(-2px); background: var(--ink); color: var(--paper); }

.hero-tags {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.chip {
  background: var(--chip);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  padding: 0.4rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.hero-panel {
  display: grid;
  gap: 1rem;
}

.panel-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.panel-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
}

.panel-value {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-top: 0.5rem;
}

.panel-sub {
  font-size: 0.9rem;
  color: var(--ink-muted);
  margin-top: 0.35rem;
}

.section { padding: 4.5rem 0; }
.section.alt { background: var(--panel); border-top: 1px solid var(--card-border); border-bottom: 1px solid var(--card-border); }
.section-inner { max-width: 1200px; margin: 0 auto; padding: 0 3rem; }

.section-head { margin-bottom: 2.5rem; }
.section-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.1;
}

.section-title strong { color: var(--accent); font-weight: 600; }

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3.5rem;
  align-items: start;
}

.about-text p {
  color: var(--ink-muted);
  line-height: 1.9;
  margin-bottom: 1.2rem;
}

.about-text p strong { color: var(--ink); font-weight: 600; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.2rem;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--accent);
}

.stat-label { font-size: 0.85rem; color: var(--ink-soft); margin-top: 0.3rem; }

.focus-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}

.focus-card h3 {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.tag-grid { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag {
  border: 1px solid var(--card-border);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  background: rgba(15, 23, 42, 0.03);
}

.exp-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 2.5rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--card-border);
}

.exp-item:last-child { border-bottom: none; padding-bottom: 0; }

.exp-meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.exp-date { color: var(--accent); display: block; margin-bottom: 0.6rem; }
.exp-company { font-size: 0.85rem; color: var(--ink-soft); }
.exp-location { font-size: 0.75rem; color: var(--ink-muted); margin-top: 0.25rem; }

.exp-content h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
}

.exp-stack {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 1.2rem;
}

.exp-content ul { list-style: none; }
.exp-content li {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 0.6rem;
  color: var(--ink-muted);
  line-height: 1.7;
}

.exp-content li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  position: absolute;
  left: 0;
  top: 0.6rem;
}

.built-grid,
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.project-card.featured {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
}

.project-meta {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.project-card h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
}

.project-card p { color: var(--ink-muted); line-height: 1.8; }

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.3rem;
}

.project-tech span {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  background: rgba(249, 115, 22, 0.1);
  color: var(--accent-strong);
  border: 1px solid rgba(249, 115, 22, 0.2);
}

.project-highlight {
  border-top: 1px solid var(--card-border);
  padding-top: 1.2rem;
}

.project-highlight strong {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--accent);
  display: block;
}

.project-highlight span { color: var(--ink-muted); font-size: 0.85rem; }

.project-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.8rem;
}

.project-link {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 0.2rem;
}

.project-link.secondary { color: var(--accent); border-color: var(--accent); }

.edu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.edu-item {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.5rem;
  margin-bottom: 1.2rem;
  box-shadow: var(--shadow);
}

.edu-year {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.edu-item h3 { font-family: var(--font-display); font-size: 1.3rem; margin-bottom: 0.3rem; }
.edu-item .inst { font-size: 0.88rem; color: var(--ink-soft); }
.edu-item .grade { font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent-2); margin-top: 0.4rem; }

.cert-item {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
}

.cert-item h4 { font-size: 0.95rem; margin-bottom: 0.3rem; }
.cert-item .issuer { font-size: 0.82rem; color: var(--ink-soft); }
.cert-year { font-family: var(--font-mono); font-size: 0.62rem; color: var(--accent); letter-spacing: 0.18em; text-transform: uppercase; }

.cert-link {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  text-decoration: none;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  white-space: nowrap;
  align-self: flex-start;
}

#contact {
  background: var(--ink);
  color: #f8fafc;
}

#contact .section-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.contact-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  line-height: 1.1;
  margin-bottom: 1.3rem;
}

.contact-title em { color: var(--accent); font-style: normal; }

.contact-copy { color: rgba(248, 250, 252, 0.75); line-height: 1.8; }

.contact-links { margin-top: 2rem; display: grid; gap: 1rem; }
.contact-link {
  text-decoration: none;
  color: #f8fafc;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid rgba(248, 250, 252, 0.15);
  font-size: 0.95rem;
  transition: color 0.25s, border-color 0.25s;
}

.contact-link:hover { color: var(--accent); border-color: rgba(249, 115, 22, 0.4); }

.contact-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid rgba(248, 250, 252, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent);
  flex-shrink: 0;
}

.contact-right {
  display: grid;
  gap: 1.5rem;
}

.contact-card {
  border: 1px solid rgba(248, 250, 252, 0.15);
  border-radius: 18px;
  padding: 1.6rem;
  background: rgba(248, 250, 252, 0.04);
}

.contact-card-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.8rem;
}

.contact-card p { color: rgba(248, 250, 252, 0.75); line-height: 1.7; }
.contact-card strong { color: #f8fafc; font-weight: 500; }

.ref-name { font-family: var(--font-display); font-size: 1.05rem; margin-bottom: 0.25rem; }
.ref-role { font-size: 0.82rem; color: rgba(248, 250, 252, 0.65); margin-bottom: 0.35rem; }
.ref-contact { font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent-2); }

footer {
  border-top: 1px solid var(--card-border);
  padding: 2rem 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* Hero illustration styles */
.hero-illustration { display:flex; align-items:center; justify-content:center; padding:2rem 1rem; }
.hero-illustration svg, .lottie-container { width:320px; max-width:100%; height:auto; display:block; }
.lottie-container { display:flex; align-items:center; justify-content:center; overflow: visible; }
.lottie-container lottie-player { display:block; transform-origin: left center; transform: translateX(24px) scale(2); will-change: transform; transition: transform 250ms ease; }

/* Responsive scaling: smoothly reduce visual size as viewport narrows, then hide on small screens */
@media (max-width: 1200px) {
  .lottie-container lottie-player { transform: translateX(20px) scale(1.6); }
}
@media (max-width: 900px) {
  .lottie-container lottie-player { transform: translateX(12px) scale(1.2); }
}
@media (max-width: 700px) {
  .lottie-container lottie-player { transform: translateX(6px) scale(1); }
}
@media (max-width: 640px) {
  /* Remove the animation entirely on small/mobile devices to save bandwidth & avoid layout issues */
  .lottie-container { display: none; }
}
.hero-illustration .floating { transform-origin: center; animation: float 4s ease-in-out infinite; }

.hero-illustration .arm { transform-box: fill-box; transform-origin: center right; }
.hero-illustration .arm-left { transform-origin: 30% 50%; animation: typing-left 1s ease-in-out infinite; }
.hero-illustration .arm-right { transform-origin: center; }
.hero-illustration .waving-arm {
  transform-box: fill-box;
  transform-origin: 0% 50%;
  animation: wave-3d 2.2s cubic-bezier(.36,.07,.19,.97) infinite;
  transform-style: preserve-3d;
}
.hero-illustration .hand { transform-box: fill-box; transform-origin: 20% 50%; animation: wave-hand 2.2s ease-in-out infinite; }
.hero-illustration .cursor { animation: blink 1s steps(2) infinite; }
.hero-illustration .eye { transform-box: fill-box; transform-origin: center center; animation: blink-eye 4s steps(1) infinite; }

@keyframes float { 0% { transform: translateY(0); } 50% { transform: translateY(-6px); } 100% { transform: translateY(0); } }
@keyframes typing-left { 0% { transform: rotate(0deg); } 50% { transform: rotate(-18deg); } 100% { transform: rotate(0deg); } }
@keyframes typing-right { 0% { transform: rotate(0deg); } 50% { transform: rotate(18deg); } 100% { transform: rotate(0deg); } }
@keyframes blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }
@keyframes blink-eye { 0%, 95% { transform: scaleY(1); } 98% { transform: scaleY(0.15); } 100% { transform: scaleY(1); } }

@keyframes wave-3d {
  0% { transform: rotateZ(0deg) rotateX(0deg); }
  15% { transform: rotateZ(-18deg) rotateX(-12deg); }
  30% { transform: rotateZ(8deg) rotateX(8deg); }
  45% { transform: rotateZ(-14deg) rotateX(-8deg); }
  60% { transform: rotateZ(6deg) rotateX(6deg); }
  75% { transform: rotateZ(-8deg) rotateX(-4deg); }
  100% { transform: rotateZ(0deg) rotateX(0deg); }
}

@keyframes wave-hand {
  0% { transform: rotate(0deg) translateZ(0); }
  50% { transform: rotate(30deg) translateZ(6px); }
  100% { transform: rotate(0deg) translateZ(0); }
}

.hero-illustration .arm-left, .hero-illustration .arm-right { will-change: transform; }

@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; }
  .project-card.featured { grid-column: span 1; grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .nav { padding: 1rem 1.5rem; flex-wrap: wrap; }
  .nav-links { width: 100%; order: 3; padding-top: 0.8rem; border-top: 1px solid var(--card-border); }
  .hero { padding: 4.5rem 1.5rem 3rem; }
  .section-inner { padding: 0 1.5rem; }
  .about-grid { grid-template-columns: 1fr; }
  .exp-item { grid-template-columns: 1fr; }
  .built-grid, .projects-grid { grid-template-columns: 1fr; }
  .edu-grid { grid-template-columns: 1fr; }
  #contact .section-inner { grid-template-columns: 1fr; }
  footer { flex-direction: column; gap: 0.75rem; text-align: center; }
}

@media (max-width: 640px) {
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-panel { gap: 0.8rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}