:root {
  --paper: #faf9f5;
  --ink: #16232f;
  --muted: #5b6670;
  --line: #dde1d8;
  --teal: #2a6f77;
  --teal-dim: #e4eeed;
  --rust: #c1440e;

  --font-display: "Space Grotesk", sans-serif;
  --font-body: "IBM Plex Sans", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.55;
  position: relative;
}

.grid-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.5;
}

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

/* ---------- Hero ---------- */

.hero {
  max-width: 720px;
  margin: 0 auto;
  padding: 96px 24px 64px;
  text-align: left;
}

.radar {
  width: 108px;
  height: 108px;
  margin-bottom: 28px;
}

.radar-ring {
  fill: none;
  stroke: var(--line);
  stroke-width: 1;
}

.radar-cross {
  stroke: var(--line);
  stroke-width: 1;
}

.radar-sweep {
  fill: var(--teal);
  opacity: 0.16;
  transform-origin: 100px 100px;
  animation: sweep 2.6s ease-out 1;
}

.radar-dot {
  fill: var(--rust);
  opacity: 0;
  animation: blip 2.6s ease-out 1;
}

.radar-dot-b { animation-delay: 0.4s; }

@keyframes sweep {
  from { transform: rotate(0deg); opacity: 0.35; }
  to   { transform: rotate(340deg); opacity: 0.16; }
}

@keyframes blip {
  0%, 40% { opacity: 0; }
  55% { opacity: 1; }
  100% { opacity: 0.7; }
}

@media (prefers-reduced-motion: reduce) {
  .radar-sweep, .radar-dot { animation: none; opacity: 0.2; }
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--teal);
  margin: 0 0 8px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  font-weight: 600;
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}

.hero-tagline {
  max-width: 54ch;
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 0 28px;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.link-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--ink);
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 3px;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.link-tag:hover, .link-tag:focus-visible {
  border-color: var(--teal);
  color: var(--teal);
}

/* ---------- Layout ---------- */

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

.panel {
  padding: 48px 0;
  border-top: 1px solid var(--line);
}

.panel h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 28px;
}

.panel-index {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--teal);
  font-weight: 400;
}

/* ---------- Skills ---------- */

.skill-sheet {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.skill-col h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.skill-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--muted);
}

.skill-col li {
  padding: 4px 0;
}

/* ---------- Projects ---------- */

.project-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 20px;
}

.project {
  position: relative;
  padding: 22px 22px 20px;
  border: 1px solid var(--line);
}

.project::before, .project::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border-top: 1.5px solid var(--teal);
  border-left: 1.5px solid var(--teal);
  top: -1px;
  left: -1px;
}

.project::after {
  top: auto;
  left: auto;
  bottom: -1px;
  right: -1px;
  border-top: none;
  border-left: none;
  border-bottom: 1.5px solid var(--teal);
  border-right: 1.5px solid var(--teal);
}

.project-featured {
  margin-top: 4px;
  background: var(--teal-dim);
  border-color: var(--teal);
}

.project-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.project h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 10px;
}

.project-status {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--rust);
}

.project p {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0 0 14px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.tags span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--teal);
  background: var(--teal-dim);
  border: 1px solid var(--line);
  padding: 3px 8px;
  border-radius: 3px;
}

.project-featured .tags span {
  background: var(--paper);
}

.project-link {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-decoration: none;
  font-weight: 500;
}

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

/* ---------- Contact ---------- */

.contact-line {
  color: var(--muted);
  margin: 0 0 16px;
}

.contact-email {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  text-decoration: none;
  border-bottom: 1.5px solid var(--teal);
  padding-bottom: 2px;
}

/* ---------- Footer ---------- */

footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 24px 64px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
}

/* ---------- Focus ---------- */

a:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

/* ---------- Responsive ---------- */

@media (max-width: 640px) {
  .skill-sheet { grid-template-columns: repeat(2, 1fr); }
  .project-row { grid-template-columns: 1fr; }
  .hero { padding: 64px 20px 48px; }
}