* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f4f6f8;
  color: #333;
}

header {
  background: #0f172a;
  color: white;
  padding: 20px;
  text-align: center;
}

nav {
  margin-top: 10px;
}

nav a {
  color: white;
  text-decoration: none;
  margin: 0 15px;
  font-weight: bold;
}

nav a.active,
nav a:hover {
  text-decoration: underline;
}

main {
  padding: 30px;
  max-width: 800px;
  margin: auto;
}

.review-form-section,
.reviews-list-section {
  margin-bottom: 40px;
  background: white;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

input, textarea {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  border: 1px solid #ccc;
  border-radius: 8px;
}

button {
  padding: 10px 20px;
  background-color: #2563eb;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 16px;
}

button:hover {
  background-color: #1d4ed8;
}

.review-card {
  background: #f0f0f0;
  margin: 15px 0;
  padding: 15px;
  border-radius: 10px;
}

.review-card h4 {
  margin-bottom: 5px;
  font-weight: bold;
}

footer {
  background: #0f172a;
  color: white;
  text-align: center;
  padding: 15px;
  margin-top: 40px;
}