body {
  font-family: system-ui, sans-serif;
  margin: 0;
  padding: 0;
  background: #f4f4f4;
  color: #333;
}

header {
  background: #222;
  color: #fff;
  padding: 2em;
  text-align: center;
}

section, details {
  padding: 1.5em;
  max-width: 800px;
  margin: auto;
}

h2, summary {
  border-bottom: 1px solid #aaa;
  margin-bottom: 0.5em;
}

details summary {
  cursor: pointer;
  font-weight: bold;
}

.filters button {
  margin-right: 0.5em;
}

.entry {
  background: #fff;
  margin: 1em 0;
  padding: 1em;
  border-left: 5px solid #0077cc;
  display: flex;
  align-items: center;
  gap: 1em;
}

.entry img {
  width: 40px;
  height: 40px;
}

form label {
  display: block;
  margin-top: 1em;
}

form input, form textarea, form button {
  width: 100%;
  padding: 0.75em;
  margin-top: 0.5em;
  box-sizing: border-box;
}

footer {
  text-align: center;
  padding: 1em;
  background: #ddd;
}