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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  background-color: #f9f9fb;
  color: #333;
}

/* Hero */
.hero {
  background: linear-gradient(to right, #4a69bd, #6a89cc);
  color: white;
  padding: 4rem 2rem;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  max-width: 800px;
  margin: 0 auto 1rem;
  font-size: 1.1rem;
}

.btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1.5rem;
  background: #38ada9;
  color: white;
  text-decoration: none;
  border-radius: 6px;
  transition: background 0.3s;
}

.btn:hover {
  background: #079992;
}

/* About Section */
.about {
  padding: 3rem 2rem;
  max-width: 1000px;
  margin: auto;
}

.about h2 {
  margin-bottom: 1rem;
  color: #4a69bd;
}

/* Course Page */
.page-header {
  text-align: center;
  padding: 2rem;
  background: #6a89cc;
  color: white;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  padding: 2rem;
}

.course-card {
  background: white;
  border-radius: 10px;
  box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.1);
  padding: 1.5rem;
  text-align: center;
}

.course-card h3 {
  margin-bottom: 1rem;
  color: #222;
}

.course-img {
  grid-column: 1 / -1;
  max-width: 600px;
  margin: 2rem auto;
  display: block;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

/* Footer */
footer {
  text-align: center;
  padding: 1rem;
  background: #eee;
  margin-top: 2rem;
}

.start-container {
  text-align: center;
  margin: 3rem 0;
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.2rem;
  background: #4a69bd;
}

.logo {
  max-width: 360px;
  margin-bottom: 1rem;
}

.contact-email {
  position: absolute;
  top: 15px;
  right: 20px;
  color: white;
  font-size: 0.9rem;
}

.contact-email a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

.contact-email a:hover {
  text-decoration: underline;
}