:root {
  --bg: #111111;
  --bg-alt: #1a1a1a;
  --bg-header: #0d0d0d;
  --border: #2b2b2b;
  --accent: rgb(186, 247, 247);
  --accent-strong: #2ab6cf;
  --text: #f0f0f0;
  --text-dim: #a8a8a8;
  --radius: 8px;
  --max-width: 1000px;
}

* { box-sizing: border-box; }

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-strong); text-decoration: underline; }

/* ---- Nav ---- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: var(--bg-header);
  border-bottom: 1px solid var(--border);
}
.site-nav .logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent);
  letter-spacing: 0.02em;
}
.site-nav .logo:hover { text-decoration: none; color: var(--accent-strong); }
.site-nav ul {
  list-style: none;
  display: flex;
  gap: 1.75rem;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}
.site-nav a {
  color: var(--text);
  font-size: 0.95rem;
}
.site-nav a:hover, .site-nav a.active { color: var(--accent); text-decoration: none; }

/* ---- Hero ---- */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4.5rem 2rem 3rem;
  text-align: center;
}
.hero h1 {
  font-size: 2.6rem;
  margin: 0 0 0.4rem;
  color: var(--text);
}
.hero .subtitle {
  color: var(--accent);
  font-size: 1.2rem;
  margin: 0 0 1.2rem;
}
.hero p.lead {
  max-width: 640px;
  margin: 0 auto 1.8rem;
  color: var(--text-dim);
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.5rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--accent);
  font-weight: 600;
}
.btn:hover {
  background: var(--accent);
  color: #0d0d0d;
  text-decoration: none;
}

/* ---- Sections / cards ---- */
section {
  padding: 2rem;
  max-width: var(--max-width);
  margin: auto;
}
section > h2 {
  margin-top: 0;
}

.highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.highlight-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-left: 5px solid var(--accent);
  padding: 1.3rem;
  border-radius: var(--radius);
}
.highlight-card h3 {
  margin-top: 0;
  color: var(--text);
}
.highlight-card p {
  color: var(--text-dim);
  margin-bottom: 0.6rem;
}

.cta-block {
  text-align: center;
  margin: 3rem auto 1rem;
  padding: 2rem;
  max-width: var(--max-width);
}
.cta-block p { color: var(--text-dim); }

/* ---- CV / accordion ---- */
.cv {
  position: relative;
  background: var(--bg-alt);
  border-left: 5px solid var(--accent);
  padding: 1.5rem;
  margin-bottom: 3rem;
  border-radius: var(--radius);
  margin-top: 150px;
  margin-bottom: 150px;
}
.accordion {
  background: var(--bg-alt);
  margin: 1rem 0;
  border-left: 5px solid var(--accent);
  border-radius: var(--radius);
  overflow: hidden;
}
.accordion h3 {
  margin: 0;
  padding: 1rem;
  cursor: pointer;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.accordion h3::after {
  content: "+";
  color: var(--accent);
  font-size: 1.2rem;
}
.accordion.active h3::after { content: "\2212"; }
.accordion-content {
  padding: 0 1rem;
  max-height: 0;
  overflow: hidden;
  background: #161616;
  transition: max-height 0.25s ease, padding 0.25s ease;
}
.accordion.active .accordion-content {
  padding: 1rem;
  max-height: 600px;
}
.a-pdf {
  display: inline-block;
  margin-top: 0.5rem;
}

/* ---- Projects ---- */
.projects {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.project {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-left: 5px solid var(--accent);
  padding: 1.2rem;
  border-radius: var(--radius);
  transition: transform 0.2s;
  display: flex;
  flex-direction: column;
}
.project:hover { transform: translateY(-5px); }
.project h3 { margin-top: 0; }
.project p { color: var(--text-dim); flex-grow: 1; }
.badge {
  display: inline-block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #0d0d0d;
  background: var(--accent);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  margin-bottom: 0.6rem;
  align-self: flex-start;
}
.badge.soon {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border);
}

/* ---- Contact ---- */
.contact-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}
.contact-list li {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-left: 5px solid var(--accent);
  padding: 1rem 1.2rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
}
.contact-list .label {
  display: block;
  color: var(--text-dim);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.2rem;
}

/* ---- Footer ---- */
footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding: 1.5rem 2rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}
footer a { color: var(--text-dim); }
footer a:hover { color: var(--accent); }

@media (max-width: 600px) {
  .site-nav { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
  .hero h1 { font-size: 2rem; }
}