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

:root {
  --bg: #0a0a0a;
  --surface: #111111;
  --border: #1e1e1e;
  --muted: #3a3a3a;
  --text: #e8e8e8;
  --text-dim: #666;
  --accent: #c8f542;
  --accent-dim: rgba(200, 245, 66, 0.12);
  --font-display: 'Syne', sans-serif;
  --font-mono: 'DM Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  overflow-x: hidden;
  cursor: none;
}

/*  Custom cursor  */
.cursor {
  position: fixed; top: 0; left: 0;
  width: 10px; height: 10px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: transform 0.1s, width 0.2s, height 0.2s, opacity 0.2s;
  mix-blend-mode: difference;
}
.cursor-ring {
  position: fixed; top: 0; left: 0;
  width: 36px; height: 36px;
  border: 1px solid rgba(200, 245, 66, 0.5);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: transform 0.18s ease-out, width 0.25s, height 0.25s, opacity 0.25s;
}
.cursor.hover { width: 18px; height: 18px; }
.cursor-ring.hover { width: 56px; height: 56px; opacity: 0.6; }

/*  Noise overlay  */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
  opacity: 0.025;
  pointer-events: none;
  z-index: 0;
}

/*  Nav  */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.5rem 3rem;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s, backdrop-filter 0.3s;
}
nav.scrolled {
  border-color: var(--border);
  background: rgba(10,10,10,0.85);
  backdrop-filter: blur(12px);
}
.nav-logo {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute; bottom: -3px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.25s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }

/*  Hero  */
#hero {
  min-height: 100vh;
  display: flex; align-items: flex-end;
  padding: 0 3rem 5rem;
  position: relative;
  overflow: hidden;
}
.hero-bg-text {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(120px, 20vw, 260px);
  font-weight: 800;
  letter-spacing: -0.05em;
  color: transparent;
  -webkit-text-stroke: 1px var(--border);
  pointer-events: none;
  white-space: nowrap;
  user-select: none;
  opacity: 0;
  animation: fadeUp 1.2s 0.2s forwards;
}
.hero-content { position: relative; z-index: 1; max-width: 900px; }
.hero-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.5s forwards;
  display: flex; align-items: center; gap: 0.75rem;
}
.hero-tag::before {
  content: '';
  display: inline-block;
  width: 24px; height: 1px;
  background: var(--accent);
}
h1.hero-name {
  font-size: clamp(3.5rem, 9vw, 8rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.9s 0.7s forwards;
}
h1.hero-name em {
  font-style: normal;
  color: var(--accent);
}
.hero-desc {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text-dim);
  font-weight: 300;
  line-height: 1.7;
  max-width: 480px;
  opacity: 0;
  animation: fadeUp 0.9s 0.9s forwards;
}
.hero-scroll-hint {
  position: absolute; right: 3rem; bottom: 5rem;
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  opacity: 0;
  animation: fadeIn 1s 1.6s forwards;
}
.scroll-line {
  width: 1px; height: 60px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollDrop 2s 2s infinite;
}

/*  Sections shared  */
section {
  padding: 7rem 3rem;
  position: relative;
}
.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  display: flex; align-items: center; gap: 0.75rem;
}
.section-label::before {
  content: '';
  display: inline-block;
  width: 20px; height: 1px;
  background: var(--accent);
}
h2.section-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 3rem;
}

/*  About  */
#about { border-top: 1px solid var(--border); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}
.about-text p {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.85;
  color: #aaa;
  margin-bottom: 1.5rem;
}
.about-img-wrap {
  position: relative;
  aspect-ratio: 3/4;
  max-width: 380px;
}
.about-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.1);
  display: block;
  border: 1px solid var(--border);
}
.about-img-wrap::after {
  content: '';
  position: absolute;
  inset: 12px -12px -12px 12px;
  border: 1px solid var(--muted);
  z-index: -1;
  transition: inset 0.3s;
}
.about-img-wrap:hover::after {
  inset: 8px -8px -8px 8px;
}
.about-img-accent {
  position: absolute;
  bottom: -1.5rem;
  left: -1.5rem;
  width: 80px; height: 80px;
  background: var(--accent);
  z-index: -1;
}

/*  Projects  */
#projects { border-top: 1px solid var(--border); background: var(--surface); }
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  border: 1px solid var(--border);
}
.project-card {
  padding: 2.5rem;
  border: none;
  background: var(--surface);
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 0;
  background: var(--accent);
  transition: height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.project-card:hover { background: #161616; }
.project-card:hover::before { height: 100%; }
.project-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}
.project-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  line-height: 1.2;
}
.project-card p {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 300;
  color: #777;
  line-height: 1.75;
}
.project-tags {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
  margin-top: 1.5rem;
}
.tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--border);
  color: var(--text-dim);
  transition: border-color 0.2s, color 0.2s;
}
.project-card:hover .tag {
  border-color: rgba(200,245,66,0.3);
  color: var(--accent);
}

/*  Skills  */
#skills { border-top: 1px solid var(--border); }
.skills-layout {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.skill-group h4 {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.skill-group ul { list-style: none; }
.skill-group li {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 300;
  color: #999;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s, padding-left 0.2s;
  display: flex; align-items: center; gap: 0.5rem;
}
.skill-group li::before {
  content: '';
  width: 4px; height: 4px;
  background: var(--muted);
  border-radius: 50%;
  flex-shrink: 0;
  transition: background 0.2s;
}
.skill-group li:hover {
  color: var(--text);
  padding-left: 0.25rem;
}
.skill-group li:hover::before { background: var(--accent); }

/*  Contact  */
#contact {
  border-top: 1px solid var(--border);
  background: var(--surface);
  text-align: center;
}
.contact-inner { max-width: 600px; margin: 0 auto; }
.contact-big {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 2rem;
}
.contact-big span { color: var(--accent); }
.contact-sub {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 3rem;
}
.contact-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.contact-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-decoration: none;
  padding: 0.9rem 2rem;
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  transition: color 0.3s, border-color 0.3s;
}
.contact-link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: -1;
}
.contact-link:hover { color: #0a0a0a; border-color: var(--accent); }
.contact-link:hover::before { transform: scaleY(1); }

/*  Footer  */
footer {
  padding: 2rem 3rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
footer p {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
}
.footer-accent {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

/*  Scroll reveal  */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.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; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* Keyframes */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; } to { opacity: 1; }
}
@keyframes scrollDrop {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.7); }
}

/* Responsive */
@media (max-width: 900px) {
  nav { padding: 1.25rem 1.5rem; }
  #hero { padding: 0 1.5rem 4rem; }
  section { padding: 5rem 1.5rem; }
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .about-img-wrap { max-width: 260px; }
  .projects-grid { grid-template-columns: 1fr; }
  .skills-layout { grid-template-columns: repeat(2, 1fr); }
  footer { padding: 1.5rem; }
}
@media (max-width: 560px) {
  .nav-links { display: none; }
  .skills-layout { grid-template-columns: 1fr; }
}