:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --accent: #0ea5e9;
  --border: #e2e8f0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  background: #0f172a;
  color: #fff;
  padding: 16px;
}

header h1 {
  margin: 0 0 10px;
  font-size: 1.2rem;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 12px;
  margin: 0;
  padding: 0;
}

nav a {
  color: #cbd5e1;
  text-decoration: none;
}

nav a:hover {
  color: #fff;
}

main {
  max-width: 980px;
  margin: 0 auto;
  padding: 14px;
}

section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  margin-top: 12px;
}

section h3 {
  margin: 0 0 10px;
}

#search-input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 8px;
}

.post-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  margin-bottom: 10px;
  background: #fff;
}

.post-card h3,
.post-card h4 {
  margin: 0 0 8px;
}

.post-card p {
  margin: 0 0 6px;
  color: var(--muted);
}

.post-card small {
  color: var(--muted);
}

@media (min-width: 768px) {
  main {
	padding: 20px;
  }

  header {
	padding: 18px 24px;
  }

  header h1 {
	font-size: 1.4rem;
  }
}