:root {
  --primary-color: #A3E635;
  --hover-color: #84CC16;
  --text-color: #E7F5D3;
  --muted-color: #8FA672;
  --bg-color: #0B1207;
  --nav-bg: #070C04;
  --card-bg: #141F0D;
  --border-color: #2C4218;
  --shadow-color: #1E3A0A;
}

* {
  box-sizing: border-box;
}

/* Dark mode is default */
body {
  margin: 0;
  min-height: 100vh;
  font-family: 'JetBrains Mono', Consolas, monospace;
  line-height: 1.6;
  background-color: var(--bg-color);
  color: var(--text-color);
}

/* Light mode styles */
body.light-mode {
  --primary-color: #3F6212;
  --hover-color: #4D7C0F;
  --text-color: #1A2E05;
  --muted-color: #5B7338;
  --bg-color: #F4FBE8;
  --nav-bg: #E4F2CB;
  --card-bg: #E9F5D3;
  --border-color: #BEDB8F;
  --shadow-color: #A3C76A;
}

/* Falling characters behind the content (js/matrix.js) */
#matrix-bg {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.3;
  pointer-events: none;
}

/* CRT scanlines */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  background: repeating-linear-gradient(to bottom, transparent 0, transparent 2px, rgba(0, 0, 0, 0.12) 3px);
}

body.light-mode::after {
  display: none;
}

/* Custom pixel cursors (drawn by tools/make_cursors.py) */
html,
body {
  cursor: url('../assets/cursors/arrow.png') 0 0, auto;
}

a,
button,
.card.clickable {
  cursor: url('../assets/cursors/pointer.png') 11 1, pointer;
}

input,
textarea,
pre {
  cursor: url('../assets/cursors/text.png') 7 16, text;
}

a {
  color: var(--primary-color);
}

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

.hidden {
  display: none !important;
}

body:not(.light-mode) .light-mode-only,
body.light-mode .dark-mode-only {
  display: none;
}

/* Navigation */
.site-nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 50;
  background-color: var(--nav-bg);
  border-bottom: 2px solid var(--border-color);
}

.nav-inner {
  max-width: 80rem;
  height: 4rem;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: 'Press Start 2P', 'JetBrains Mono', monospace;
  font-size: 1rem;
  text-decoration: none;
}

.brand-icon {
  width: 28px;
  height: 28px;
  image-rendering: pixelated;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  padding: 0.5rem 0.75rem;
  color: var(--text-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
}

.nav-link.active::before {
  content: '> ';
}

.menu-button {
  display: none;
  background: none;
  border: none;
  color: var(--text-color);
  font-size: 1.5rem;
}

.mobile-menu {
  padding: 0.5rem;
  border-top: 2px solid var(--border-color);
}

.mobile-menu .nav-link {
  display: block;
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .menu-button {
    display: block;
  }
}

@media (min-width: 901px) {
  .mobile-menu {
    display: none;
  }
}

/* Theme toggle button */
.theme-toggle {
  margin-left: 0.75rem;
  padding: 0.4rem 0.75rem;
  background: none;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  font-family: inherit;
  font-size: 0.75rem;
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  background-color: var(--primary-color);
  color: var(--bg-color);
}

/* Layout */
main {
  max-width: 72rem;
  margin: 0 auto;
  padding: 5rem 1rem 0;
}

.section {
  max-width: 56rem;
  margin: 0 auto;
  padding: 3rem 0;
}

.section.wide {
  max-width: 72rem;
}

.section.narrow {
  max-width: 42rem;
}

h1 {
  margin: 0 0 2rem;
  font-family: 'Press Start 2P', 'JetBrains Mono', monospace;
  font-size: clamp(1.25rem, 4vw, 2.25rem);
  line-height: 1.5;
  color: var(--primary-color);
}

h2 {
  margin: 2rem 0 1rem;
  font-size: 1.5rem;
  color: var(--primary-color);
}

.lead {
  margin: 0 0 2rem;
  font-size: 1.2rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1.5rem;
}

/* Hero */
.hero {
  text-align: center;
}

.lime-avatar {
  display: block;
  width: 320px;
  height: 320px;
  max-width: 80vw;
  max-height: 80vw;
  margin: 0 auto 1.5rem;
  image-rendering: pixelated;
}

.lime-avatar.small {
  width: 200px;
  height: 200px;
  margin-bottom: 1rem;
}

/* Shown when WebGL is unavailable */
.lime-avatar-fallback {
  background: url('../assets/lime.png') center / 70% no-repeat;
}

.cursor::after {
  content: '_';
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* Project filters */
.filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.filter-button {
  padding: 0.5rem 1rem;
  border: 2px solid var(--primary-color);
  box-shadow: 4px 4px 0 var(--shadow-color);
  text-decoration: none;
  text-transform: uppercase;
}

.filter-button:hover,
.filter-button.active {
  background-color: var(--primary-color);
  color: var(--bg-color);
}

/* Cards */
.card {
  display: block;
  padding: 1.5rem;
  background-color: var(--card-bg);
  border: 2px solid var(--border-color);
  box-shadow: 4px 4px 0 var(--shadow-color);
  color: var(--text-color);
  text-align: left;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

a.card:hover,
.card:hover {
  transform: translate(-2px, -2px);
  border-color: var(--primary-color);
  box-shadow: 6px 6px 0 var(--shadow-color);
  color: var(--text-color);
}

.card h2,
.card-title {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
  color: var(--primary-color);
}

.card p,
.card ul {
  margin: 0;
}

.card-category {
  margin-bottom: 0.5rem !important;
  font-size: 0.75rem;
  color: var(--muted-color);
  text-transform: uppercase;
}

.card-text {
  margin-bottom: 1rem !important;
}

.card-meta {
  font-size: 0.85rem;
  color: var(--muted-color);
}

.tag {
  margin-left: 0.75rem;
  padding: 0.1rem 0.5rem;
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.stack > * + * {
  margin-top: 1.5rem;
}

/* About page */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 2rem;
  align-items: start;
}

.profile {
  position: sticky;
  top: 6rem;
  text-align: center;
}

.profile .muted {
  margin-bottom: 1rem;
}

@media (max-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

  .profile {
    position: static;
  }
}

.muted {
  color: var(--muted-color);
}

/* Posts */
.post-meta {
  margin: -1rem 0 2.5rem;
  color: var(--muted-color);
}

/* Before/after image slider (js/main.js: initCompare) */
.compare {
  --pos: 50%;
  position: relative;
  margin: 0 0 0.5rem;
  border: 2px solid var(--border-color);
  box-shadow: 4px 4px 0 var(--shadow-color);
  overflow: hidden;
  cursor: ew-resize;
  touch-action: pan-y;
  user-select: none;
}

.compare img {
  display: block;
  width: 100%;
  height: auto;
  pointer-events: none;
}

.compare .compare-before {
  position: absolute;
  inset: 0;
  clip-path: inset(0 calc(100% - var(--pos)) 0 0);
}

.compare-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--pos);
  width: 2px;
  margin-left: -1px;
  background-color: var(--primary-color);
  pointer-events: none;
}

.compare-handle::after {
  content: '<>';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 0.2rem 0.4rem;
  background-color: var(--primary-color);
  color: var(--bg-color);
  font-weight: 600;
}

.compare-label {
  position: absolute;
  top: 0.5rem;
  padding: 0.1rem 0.5rem;
  background-color: var(--bg-color);
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
  font-size: 0.75rem;
  text-transform: uppercase;
  pointer-events: none;
}

.compare-label.left {
  left: 0.5rem;
}

.compare-label.right {
  right: 0.5rem;
}

/* Kept for keyboard users: focus it and use the arrow keys */
.compare input {
  position: absolute;
  inset: 0;
  height: 100%;
  margin: 0;
  padding: 0;
  opacity: 0;
  pointer-events: none;
}

.compare:focus-within {
  border-color: var(--primary-color);
}

.compare-caption {
  margin: 0 0 2rem;
  color: var(--muted-color);
  font-size: 0.85rem;
}

pre {
  padding: 1rem;
  overflow-x: auto;
  background-color: var(--card-bg);
  border: 2px solid var(--border-color);
}

/* Forms */
label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
}

input,
textarea {
  display: block;
  width: 100%;
  margin-bottom: 1.5rem;
  padding: 0.6rem;
  background-color: var(--card-bg);
  border: 2px solid var(--border-color);
  color: var(--text-color);
  font-family: inherit;
  font-size: 1rem;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.button {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--primary-color);
  border: none;
  box-shadow: 4px 4px 0 var(--shadow-color);
  color: var(--bg-color);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
}

.button:hover {
  background-color: var(--hover-color);
}

/* Footer */
.site-footer {
  margin-top: 5rem;
  padding: 3rem 1rem;
  background-color: var(--nav-bg);
  border-top: 2px solid var(--border-color);
  color: var(--muted-color);
  text-align: center;
}

.site-footer p {
  margin: 0;
}

/* Custom animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-in {
  animation: fadeIn 0.5s ease-in;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--hover-color);
}