:root {
  --bg: #0a0a0a;
  --bg-elevated: #111111;
  --bg-card: #141414;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.18);

  --accent: #8ba4b8;
  --accent-soft: rgba(139, 164, 184, 0.12);

  --text: #e8e8e8;
  --text-muted: #888888;
  --text-dim: #555555;

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;

  --radius: 8px;
  --radius-sm: 4px;
  --transition: 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: var(--font-body);
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 120% 80% at 10% -20%, rgba(139, 164, 184, 0.14), transparent 50%),
    radial-gradient(ellipse 90% 60% at 95% 40%, rgba(100, 120, 140, 0.08), transparent 45%),
    radial-gradient(ellipse 70% 50% at 50% 100%, rgba(139, 164, 184, 0.06), transparent 50%),
    linear-gradient(180deg, #0e1012 0%, #0a0a0a 40%, #0b0c0e 100%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  position: relative;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.012) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.012) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 20%, transparent 75%);
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

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

.container {
  width: min(1080px, 90vw);
  margin-inline: auto;
}
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.1rem 0;
  transition: background var(--transition), border-color var(--transition), backdrop-filter var(--transition);
  border-bottom: 1px solid transparent;
}
.header.scrolled {
  background: rgba(10, 10, 10, 0.75);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
}

.nav-links {
  display: flex;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav-links a:hover,
.nav-links a.active { color: var(--text); }

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.burger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  transition: var(--transition);
}
.burger.active span:nth-child(1) { transform: rotate(45deg) translate(4.5px, 4.5px); }
.burger.active span:nth-child(2) { opacity: 0; }
.burger.active span:nth-child(3) { transform: rotate(-45deg) translate(4.5px, -4.5px); }
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 7rem 0 5rem;
  position: relative;
}

.hero-content { position: relative; z-index: 1; }

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 7.5rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 420px;
  margin-bottom: 2.25rem;
  font-weight: 400;
}

.hero-cta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9rem;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--text);
  color: var(--bg);
}
.btn-primary:hover {
  background: #fff;
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover {
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.03);
}
.section {
  padding: 6rem 0;
  border-top: 1px solid var(--border);
}

.section-header { margin-bottom: 2.5rem; }
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.about-content {
  max-width: 560px;
}
.about-content p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 1.15rem;
}
.about-content p:last-child { margin-bottom: 0; }
.about-content strong {
  color: var(--text);
  font-weight: 600;
}
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.skill-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.5rem 1.35rem;
  background: var(--bg);
  transition: background var(--transition);
}
.skill-item:hover { background: var(--bg-elevated); }

.skill-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
}
.skill-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.skill-item h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}
.skill-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.service-card {
  padding: 2rem 1.75rem;
  background: var(--bg);
  transition: background var(--transition);
}
.service-card:hover { background: var(--bg-elevated); }

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.65rem;
}
.service-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
  line-height: 1.6;
}
.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.service-tags li {
  font-size: 0.7rem;
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border);
  font-family: var(--font-body);
}
.project-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border);
}

.project-item {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
}

.project-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.4rem;
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.project-stack {
  font-size: 0.8rem;
  color: var(--text-dim);
  flex-shrink: 0;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
  max-width: 560px;
}

.portfolio-note {
  margin-top: 1.75rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.portfolio-note a {
  color: var(--text);
  border-bottom: 1px solid var(--border-hover);
  transition: border-color var(--transition);
}
.portfolio-note a:hover {
  border-bottom-color: var(--text);
}
.contact-content {
  max-width: 480px;
}
.contact-content p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}
.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}
.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-weight: 500;
  font-size: 0.9rem;
  transition: border-color var(--transition), background var(--transition);
}
.contact-link:hover {
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.03);
}
.footer {
  padding: 1.75rem 0;
  border-top: 1px solid var(--border);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.footer-logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.footer-copy {
  font-size: 0.8rem;
  color: var(--text-dim);
}
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 260px;
    height: 100vh;
    background: var(--bg-elevated);
    flex-direction: column;
    padding: 5rem 1.75rem 2rem;
    gap: 1.25rem;
    border-left: 1px solid var(--border);
    transition: right var(--transition);
    z-index: 99;
  }
  .nav-links.open { right: 0; }
  .burger { display: flex; z-index: 101; }

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

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; }
  .btn { justify-content: center; width: 100%; }
  .services-grid,
  .skills-grid { border-radius: var(--radius-sm); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}