body {
  background: #0d0d0d;
  color: #eaeaea;
  padding: 0 20px;
  font-family: "Inter", sans-serif;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 0 80px;
}

.tool-header {
  text-align: center;
  margin-bottom: 40px;
}

.tool-header h1 {
  font-size: 2.4rem;
  color: #4cc9f0;
  margin-bottom: 10px;
}

.meta {
  color: #bbbbbb;
  font-size: 0.9rem;
  margin-bottom: 25px;
  text-align: center;
}

.tool-content {
  background: rgba(25, 25, 25, 0.7);
  padding: 30px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(6px);
  line-height: 1.7;
  font-size: 1.05rem;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.55);
}

.tool-content h2 {
  color: #4cc9f0;
  margin-top: 25px;
}

.tool-content code {
  background: #111;
  padding: 5px 8px;
  border-radius: 6px;
  color: #4cc9f0;
}

pre {
  background: #111;
  padding: 14px;
  border-radius: 8px;
  color: #4cc9f0;
  overflow-x: auto;
}

.back-button {
  display: inline-block;
  margin-top: 40px;
  padding: 12px 22px;
  border-radius: 10px;
  border: 1px solid #4cc9f0;
  text-decoration: none;
  color: #4cc9f0;
  transition: 0.25s ease;
}

.back-button:hover {
  background: #4cc9f0;
  color: #000;
}

footer {
  text-align: center;
  padding: 40px 0;
  color: #777;
}

.ad-banner {
  text-align: center;
  margin: 10px 0;
  display: block;
  width: 100%;
  background: #ddd; /* warna default untuk light mode */
  color: #555;
  padding: 15px 0;
  font-size: 18px;
  border-radius: 4px;
}

.ad-banner img {
  max-width: 100%;
  height: auto;
}