:root {
  --bg: #0f1724;
  --card: #0b1220;
  --muted: #9aa4b2;
  --accent: #45ffaa;
  --text: #e6eef8;
  --border: #233242;
}

* { box-sizing: border-box; }
body {
  font-family: Inter, 'Segoe UI', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  padding: 24px;
  line-height: 1.5;
}
header, main, footer {
  max-width: 1100px;
  margin: 0 auto;
}
header { margin-bottom: 18px; }
h1 { margin: 0 0 6px; font-size: clamp(1.6rem, 2.4vw, 2.3rem); }
header p { margin: 0; color: var(--muted); }
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 auto 18px;
}
.filters input,
.filters select {
  flex: 1 1 220px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #071022;
  color: var(--text);
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}
.card {
  background: var(--card);
  padding: 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.2);
}
.card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.meta { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  background: #0e2230;
  padding: 4px 8px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
footer { margin-top: 24px; color: var(--muted); }

@media (max-width: 640px) {
  body { padding: 16px; }
  .filters { flex-direction: column; }
}