body {
  background-color: #1a1a1a;
  color: white;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 0;
}

.topnav {
  background-color: #333;
  overflow: hidden;
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 0 20px;
  height: 60px;
}

.logonav {
  margin-right: auto;
  display: flex;
  align-items: center;
}

.logonav img {
  height: 50px;
  width: 70px;
  object-fit: cover;
}

.topnav a {
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
  transition: 0.3s;
}

.topnav a:hover {
  background-color: #ddd;
  color: black;
}

.algtitle {
  margin-top: 60px;
  text-align: center;
}

.algsubtitle {
  text-align: center;
  font-size: large;
  margin-bottom: 40px;
}

.container {
  display: flex;
  justify-content: center;
  min-height: 80vh;
  background-color: #1a1a1a;
  padding: 20px;
}

.solve-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  max-width: 1100px;
  width: 100%;
}


.solve-card {
  text-decoration: none;
  background-color: rgba(255, 255, 255, 0.05);
  padding: 35px;
  border-radius: 25px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;

  cursor: default;
  transition: none;
}

.solve-card:hover {
  background-color: rgba(255, 255, 255, 0.05);
  transform: none;
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: none;
}

.cube-grid {
  margin-bottom: 25px;
  width: 100%;
}

.cube-grid img {
  width: 25%;
  max-width: 250px;
  height: auto;
  border-radius: 15px;


  transition: none;
}

.solve-card:hover img {
  transform: none;
}

.centered {
  font-size: 2.2rem;
  font-weight: bold;
  color: #fff;
  display: block;
  transition: none;
}

.solve-card:hover .centered {
  color: #fff;
}

.site-footer {
  background-color: #111;
  color: #ccc;
  padding: 60px 20px 20px;
  border-top: 1px solid #333;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  max-width: 1100px;
  margin: 0 auto;
  flex-wrap: wrap;
  gap: 40px;
}

.footer-section {
  flex: 1;
  min-width: 200px;
}

.footer-logo {
  height: 50px;
  margin-bottom: 15px;
}

.footer-section h4 {
  color: white;
  text-transform: uppercase;
  margin-bottom: 20px;
  font-size: 1rem;
}

.footer-section ul {
  list-style: none;
  padding: 0;
}

.footer-section ul li {
  margin-bottom: 10px;
}

.footer-section a {
  color: #999;
  text-decoration: none;
  transition: color 0.3s;
}

.footer-section a:hover {
  color: white;
}

.footer-bottom {
  text-align: center;
  margin-top: 50px;
  padding-top: 20px;
  border-top: 1px solid #222;
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  .solve-grid {
    grid-template-columns: 1fr;
  }

  .algtitle, .algsubtitle {
    margin-left: 0;
  }
}

.next-button-container {
        text-align: center;
        margin: 40px 0;
      }

      .next-button {
        display: inline-block;
        padding: 12px 24px;
        background-color: #0077ff;
        color: #fff;
        text-decoration: none;
        border-radius: 6px;
        font-size: 1.2rem;
        font-weight: 600;
        transition: background-color 0.2s ease;
      }

      .next-button:hover,
      .next-button:focus {
        background-color: #005fcc;
      }

.home-button-container {
        text-align: center;
        margin: 40px 0;
      }

      .home-button {
        display: inline-block;
        padding: 12px 24px;
        background-color: #0077ff;
        color: #fff;
        text-decoration: none;
        border-radius: 6px;
        font-size: 1.2rem;
        font-weight: 600;
        transition: background-color 0.2s ease;
      }

      .home-button:hover,
      .home-button:focus {
        background-color: #005fcc;
      }

.intro-section {
  background: none;        
  border: none;              
  padding: 2rem;
  margin: 2rem auto;
  max-width: 900px;
  color: #ffffff;          
  font-family: 'Segoe UI', sans-serif;
}

.intro-section h2 {
  font-size: 1.6rem;
  color: #ffffff;   
  margin-bottom: 0.5rem;

}

.intro-section p {
  font-size: 1rem;
  line-height: 1.6;
  color: #e6e6e6; 
  margin-bottom: 1rem;
}

.intro-section ul,
.intro-section ol {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
  color: #e6e6e6;
}

.intro-section li {
  margin-bottom: 0.5rem;
}

.intro-section strong {
  color: #0077ff;
}