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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  line-height: 1.65;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
}

section {
  scroll-margin-top: 5rem;
}

.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.section h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.5rem, 4vw, 2.25rem);
}

.section-intro {
  max-width: 65ch;
  margin: 0 0 2rem;
  opacity: 0.9;
}

.prose p {
  max-width: 65ch;
  margin: 0 0 1rem;
}

.card-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.card {
  padding: 1.25rem 1.5rem;
  border-radius: 4px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card h3 {
  margin: 0.5rem 0 0.75rem;
  font-size: 1.1rem;
}

.card p {
  margin: 0;
  font-size: 0.95rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  justify-content: center;
  padding: 0.85rem 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

.nav-link {
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}

.nav-link:hover,
.nav-link:focus-visible {
  outline: none;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  font-weight: 600;
  border-radius: 2px;
  border: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

.theme-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  transition: transform 0.15s, box-shadow 0.15s;
}

.theme-toggle:hover {
  transform: scale(1.03);
}

.theme-toggle:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

#matrix-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}

.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.04;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.4) 2px,
    rgba(0, 0, 0, 0.4) 4px
  );
}

main {
  position: relative;
  z-index: 2;
}

.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  overflow: hidden;
  transform: perspective(500px) rotateX(60deg);
  transform-origin: center top;
  opacity: 0.15;
}

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

.hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin: 0 0 1rem;
}

.hero-title {
  font-size: clamp(2.5rem, 10vw, 5rem);
  margin: 0 0 1rem;
  line-height: 1.05;
}

.hero-tagline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  max-width: 42rem;
  margin: 0 0 2rem;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.filter-btn {
  padding: 0.45rem 1rem;
  border-radius: 2px;
  cursor: pointer;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: background 0.2s, color 0.2s;
}

.filter-btn:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 2px;
}

.project-card {
  position: relative;
}

.project-card.hidden {
  display: none;
}

.project-type {
  display: inline-block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.5rem;
  border-radius: 2px;
}

.badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.45rem;
  border-radius: 2px;
}

.project-date {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.8rem;
  opacity: 0.7;
}

.project-link {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.9rem;
  text-decoration: none;
}

.project-link:hover {
  text-decoration: underline;
}

.contact-block {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: flex-start;
}

.contact-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  text-decoration: none;
  border-radius: 4px;
  transition: transform 0.15s, background 0.15s, color 0.15s;
}

.contact-link:hover {
  transform: translateY(-2px);
}

.contact-icon {
  width: 1.35rem;
  height: 1.35rem;
  flex-shrink: 0;
}

.contact-link-label {
  font-size: 0.9rem;
}

@media (max-width: 480px) {
  .contact-link-label {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .contact-link {
    padding: 0.65rem;
  }

  .contact-icon {
    width: 1.5rem;
    height: 1.5rem;
  }
}

.site-footer {
  text-align: center;
  padding: 2rem 1.5rem 3rem;
  font-size: 0.85rem;
  opacity: 0.75;
  position: relative;
  z-index: 2;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 640px) {
  .theme-toggle {
    top: auto;
    bottom: 1rem;
    right: 1rem;
  }

  .main-nav {
    font-size: 0.8rem;
    gap: 0.35rem 0.75rem;
  }
}