/* ── Reset & tokens ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black:      #080808;
  --near-black: #111;
  --dark:       #181818;
  --mid:        #2a2a2a;
  --border:     #2e2e2e;
  --muted:      #666;
  --dim:        #999;
  --text:       #e8e8e8;
  --white:      #f5f5f5;
  --accent:     #c8f04a;
  --mono:       'JetBrains Mono', 'Courier New', monospace;
  --sans:       'Inter', system-ui, sans-serif;
}

html  { scroll-behavior: smooth; }
body  {
  font-family: var(--sans);
  background: var(--black);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a     { color: inherit; text-decoration: none; }
strong { font-weight: 500; }

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Hero ── */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--black);
  cursor: crosshair;
}

#sat-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease;
  z-index: 0;
}
#sat-canvas.revealed { opacity: 1; }

.hero-overlay {
  position: absolute;
  inset: 0;
  background: var(--black);
  opacity: .85;
  transition: opacity .8s ease;
  z-index: 1;
  pointer-events: none;
}
.hero:hover .hero-overlay { opacity: .42; }

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 2rem;
  max-width: 880px;
  margin: 0 auto;
  width: 100%;
}

.hero-mono {
  font-family: var(--mono);
  font-size: .8rem;
  font-weight: 300;
  letter-spacing: .22em;
  text-transform: lowercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 300;
  letter-spacing: -.02em;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 1rem;
}

.hero-sub {
  font-size: 1rem;
  color: var(--dim);
  font-weight: 300;
  letter-spacing: .01em;
  margin-bottom: 2rem;
}

.hero-links {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}
.hero-links a {
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--dim);
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
  transition: color .2s, border-color .2s;
}
.hero-links a:hover { color: var(--accent); border-color: var(--accent); }

.hero-nav { display: flex; gap: .75rem; align-items: center; }
.hero-nav a { font-size: .85rem; color: var(--accent); transition: color .2s; }
.hero-nav a:hover { color: var(--white); }
.hero-nav span { color: var(--border); }

.hero-hint {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  z-index: 2;
  font-family: var(--mono);
  font-size: .65rem;
  letter-spacing: .12em;
  color: var(--muted);
  opacity: .5;
  transition: opacity .4s;
  pointer-events: none;
}
.hero:hover .hero-hint { opacity: 0; }

/* ── Sections ── */
.section {
  padding: 5rem 0;
  border-top: 1px solid var(--border);
}
.section-dark { background: var(--near-black); }

.section-label {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 400;
  margin-bottom: 2.5rem;
}

/* ── About ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}
@media (max-width: 640px) { .about-grid { grid-template-columns: 1fr; } }

.about-text p {
  color: var(--dim);
  font-size: .95rem;
  margin-bottom: 1rem;
  line-height: 1.75;
}
.about-text strong { color: var(--text); }

.about-stack h3 {
  font-size: .8rem;
  font-family: var(--mono);
  color: var(--muted);
  letter-spacing: .08em;
  margin-bottom: 1rem;
  font-weight: 400;
}
.about-stack ul { list-style: none; }
.about-stack li {
  font-size: .85rem;
  color: var(--dim);
  padding: .3rem 0;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
}

/* ── Project grid (index) ── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.project-card {
  display: flex;
  flex-direction: column;
  background: var(--near-black);
  padding: 1.75rem;
  cursor: pointer;
  transition: background .2s;
  position: relative;
  text-decoration: none;
  min-height: 220px;
}
.project-card:hover { background: var(--dark); }

.project-tag {
  font-family: var(--mono);
  font-size: .65rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .75rem;
  display: block;
}
.project-title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: .6rem;
  line-height: 1.3;
}
.project-desc {
  font-size: .83rem;
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 1.25rem;
}
.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 2.5rem;
}
.stack-pill {
  font-family: var(--mono);
  font-size: .65rem;
  padding: 3px 8px;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 2px;
  letter-spacing: .04em;
}
.project-arrow {
  font-size: 1rem;
  color: var(--border);
  position: absolute;
  bottom: 1.75rem;
  right: 1.75rem;
  transition: color .2s, transform .2s;
}
.project-card:hover .project-arrow { color: var(--accent); transform: translateX(4px); }

/* ── Project page ── */
.project-page { padding: 5rem 0; }

.project-page-back {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  margin-bottom: 3rem;
  transition: color .2s, border-color .2s;
}
.project-page-back:hover { color: var(--accent); border-color: var(--accent); }

.project-page-tag {
  font-family: var(--mono);
  font-size: .65rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .75rem;
}

.project-page-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 300;
  letter-spacing: -.02em;
  color: var(--white);
  margin-bottom: 1rem;
  line-height: 1.15;
}

.project-page-desc {
  font-size: 1rem;
  color: var(--dim);
  margin-bottom: 2rem;
  max-width: 600px;
  line-height: 1.75;
}

.project-page-meta {
  display: flex;
  gap: 2rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 0;
}
.project-page-meta-item label {
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-bottom: .3rem;
}
.project-page-meta-item span {
  font-size: .85rem;
  color: var(--text);
}

.project-page-links {
  display: flex;
  gap: 1rem;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
}
.project-page-links a {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: .4rem .9rem;
  border-radius: 2px;
  transition: background .2s, color .2s;
}
.project-page-links a:hover { background: var(--accent); color: var(--black); }

.project-page-body {
  max-width: 680px;
  color: var(--dim);
  font-size: .95rem;
  line-height: 1.8;
}
.project-page-body h2 {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 2.5rem 0 1rem;
}
.project-page-body h3 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--white);
  margin: 1.5rem 0 .5rem;
}
.project-page-body p { margin-bottom: 1rem; }
.project-page-body strong { color: var(--text); }
.project-page-body ul, .project-page-body ol {
  padding-left: 1.25rem;
  margin-bottom: 1rem;
}
.project-page-body li { margin-bottom: .35rem; }
.project-page-body code {
  font-family: var(--mono);
  font-size: .82em;
  background: var(--near-black);
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: 2px;
  color: var(--accent);
}
.project-page-body pre {
  background: var(--near-black);
  border: 1px solid var(--border);
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.25rem;
  border-radius: 2px;
}
.project-page-body pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text);
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}
.footer p {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--muted);
  letter-spacing: .06em;
}
.footer a {
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  transition: color .2s;
}
.footer a:hover { color: var(--accent); }

/* ── Publications ── */
.pub-item {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: 1.5rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
}
@media (max-width: 640px) { .pub-item { grid-template-columns: 1fr; } }

.pub-year {
  font-family: var(--mono);
  font-size: .8rem;
  color: var(--muted);
  padding-top: .2rem;
}
.pub-type {
  font-family: var(--mono);
  font-size: .65rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .5rem;
}
.pub-title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: .4rem;
  line-height: 1.4;
}
.pub-meta {
  font-size: .83rem;
  color: var(--dim);
  margin-bottom: .25rem;
}
.pub-venue {
  font-size: .8rem;
  color: var(--muted);
  font-style: italic;
  margin-bottom: .75rem;
}
.pub-links {
  display: flex;
  gap: 1rem;
}
.pub-links a {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
  transition: opacity .2s;
}
.pub-links a:hover { opacity: .6; }