body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background: #fff;
  color: #111;
  line-height: 1.6;
}

header {
  background-color: #111;
  color: white;
  padding: 20px 0;
  text-align: center;
}

main {
  padding: 40px 20px;
  max-width: 1200px;
  margin: auto;
}

h1, h2, h3 {
  text-align: center;
  margin-bottom: 20px;
}

p {
  text-align: center;
  margin-bottom: 30px;
  font-size: 1.1em;
}

#youtube-section > div,
#tools-section > div {
  margin-bottom: 40px;
}

.video-row {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.video-row iframe {
  border: 1px solid #ccc;
  border-radius: 6px;
}

#tools-section {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.tool-card {
  background: #f9f9f9;
  border: 1px solid #ddd;
  border-radius: 10px;
  padding: 20px;
  text-align: center;
}

.tool-card img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  margin-bottom: 10px;
}

.tool-card button {
  padding: 8px 16px;
  margin: 5px;
  font-size: 0.9em;
  border: none;
  border-radius: 5px;
  background-color: #007bff;
  color: white;
  cursor: pointer;
}

.tool-card button:hover {
  background-color: #0056b3;
}

button {
  display: block;
  margin: 20px auto;
  background: #000;
  color: #fff;
  border: none;
  padding: 12px 24px;
  font-size: 1em;
  border-radius: 6px;
  cursor: pointer;
}

button:hover {
  background: #333;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 30px;
}

th, td {
  border: 1px solid #ccc;
  padding: 12px;
  text-align: center;
}

thead {
  background-color: #eee;
}