:root {
  --bg: #0b1020; /* deep navy */
  --text: #e6edf3; /* light text */
  --muted: #94a3b8; /* slate-400 */
  --brand: #60a5fa; /* blue-400 */
  --brand-weak: #1d4ed8; /* blue-700 */
  --accent: #22d3ee; /* cyan-400 */
  --card: #0f172a; /* slate-900-ish */
  --border: #1f2937; /* slate-800 */
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", Helvetica, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 600px at 10% 10%, rgba(34,211,238,0.06), transparent 60%),
              radial-gradient(900px 500px at 85% 10%, rgba(96,165,250,0.07), transparent 65%),
              var(--bg);
  line-height: 1.6;
}

.container {
  width: min(1100px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(to right, rgba(29,78,216,0.15), rgba(34,211,238,0.15));
}
.site-header .name { margin: 0; font-size: 2rem; }
.site-header .tagline { margin-top: .25rem; color: var(--muted); }

main { padding-block: 2rem; }
.intro h2 { margin-bottom: .25rem; }
.intro .lead { color: var(--muted); margin-top: 0; }

.profile { margin-top: 1rem; }
.profile-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 1.25rem; align-items: start; }
.cert-list { list-style: none; padding: 0; margin: 0; }
.cert-list li { border: 1px solid var(--border); background: var(--card); border-radius: .5rem; padding: .6rem .75rem; margin-bottom: .5rem; }

.toolbar {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .75rem;
}
.toolbar label, .toolbar input {
  display: flex;
  align-items: center;
  gap: .5rem;
}
select, input[type="search"] {
  width: 100%;
  padding: .5rem .6rem;
  border: 1px solid var(--border);
  border-radius: .5rem;
  background: #fff;
}

.project-list {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  border: 1px solid var(--border);
  border-radius: .9rem;
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01)), var(--card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 12px 28px rgba(2, 8, 23, 0.6), 0 0 0 1px rgba(34, 211, 238, 0.12) inset;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px rgba(2, 8, 23, 0.75), 0 0 0 1px rgba(34, 211, 238, 0.25) inset;
  border-color: #2563eb;
}
.card-header { padding: 1rem; border-bottom: 1px solid var(--border); background: linear-gradient(0deg, rgba(29,78,216,0.08), transparent); }
.card-header h3 { margin: 0; font-size: 1.1rem; }
.card-header .site { margin: .25rem 0 0; color: var(--muted); }

.pill {
  display: inline-flex; align-items: center;
  padding: .2rem .6rem; border-radius: 999px;
  font-size: .75rem; color: #06121f; background: var(--accent);
  border: 1px solid rgba(34,211,238,0.8);
  margin-bottom: .4rem;
  box-shadow: 0 0 0 2px rgba(34,211,238,0.15);
}
.card-body { padding: 1rem; font-size: .95rem; }
.card-footer { padding: .9rem 1rem; border-top: 1px solid var(--border); display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }
.card-footer .role { color: var(--muted); }

.timeline { margin-top: 2rem; }
.timeline figure { margin: 0; }
.timeline img { width: 100%; height: auto; border: 1px solid var(--border); border-radius: .5rem; }
.timeline figcaption { color: var(--muted); font-size: .85rem; margin-top: .5rem; }

.site-footer { border-top: 1px solid var(--border); padding: 1.25rem 0; background: #0b1020; color: var(--muted); }

@media (max-width: 1024px) {
  .project-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .toolbar { grid-template-columns: 1fr; }
  .project-list { grid-template-columns: 1fr; }
  .profile-grid { grid-template-columns: 1fr; }
}