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

body {
  font-family: 'Montserrat', sans-serif;
  background-color: #0b0c2a;
  color: #1a1a1a;
}

/* Header Section */
header {
  background-color: #0b0c2a;
  padding: 3rem 1rem 2rem;
  text-align: center;
  color: #e0e0e0;
}

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

header p {
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto;
  color: #e0e0e0;
}

/* Page Header */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem;
  max-width: 900px;
  margin: auto;
}

.page-header h2 {
  font-size: 1.8rem;
  color: #56a9ff;
}

.back-btn {
  background-color: #56a9ff;
  border: 1px solid #ccc;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  color: #333;
  transition: background-color 0.2s;
}

.back-btn:hover {
  background-color: #a2cefd;
}

/* Cards */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 1rem;
}

.card {
  background-color: #1f1359;
  border: 1px solid #56a9ff;
  border-radius: 10px;
  margin-bottom: 1rem;
  padding: 1.2rem 1.5rem;
  cursor: pointer;
  transition: box-shadow 0.2s;
}

.card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 1.05rem;
  color: #56a9ff;
}

.card-content {
  display: none;
  margin-top: 0.8rem;
  animation: fadeIn 0.3s ease-in-out;
}

.card-content p {
  margin-bottom: 1rem;
  color: #e0e0e0;
}

.learn-btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: #56a9ff;
  color: #333;
  border: none;
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.9rem;
  transition: background-color 0.2s;
}

.learn-btn:hover {
  background-color: #004ecb;
}

.arrow {
  font-size: 1.2rem;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Practice Section */
.practice-section {
  text-align: center;
  margin: 3rem auto;
  padding: 2rem;
  max-width: 800px;
  background-color: #1f1359;
  border-radius: 10px;
  border: 1px solid #56a9ff;
}

.practice-section-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.practice-section h4 {
  color: #2979ff;
  font-size: 1.4rem;
}

.practice-section p {
  color: #e0e0e0;
  margin-top: 1rem;
  margin-bottom: 2rem;
}

.practice-section a {
  display: inline-block;
  background-color: #56a9ff;
  color: #333;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  border-radius: 6px;
  border-color: #1f1359;
  font-weight: bold;
}

.practice-section a:hover {
  background-color: #a2cefd;
}

/* Footer */
footer {
  background-color: #1f1359;
  color: #e0e0e0;
  text-align: center;
  padding: 1rem;
  margin-top: 3rem;
}
    .glowing-spots {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      overflow: hidden;
      z-index: 0;
      pointer-events: none;
    }
  
    .glowing-spots span {
      position: absolute;
      display: block;
      width: 30px;
      height: 30px;
      background: radial-gradient(circle, #806aed, transparent 70%);
      border-radius: 50%;
      animation: moveGlow 20s linear infinite;
      opacity: 0.5;
      filter: blur(8px);
    }
  
    @keyframes moveGlow {
      0% {
        transform: translateY(100vh) translateX(0) scale(0.5);
        opacity: 0.2;
      }
  
      50% {
        opacity: 0.8;
      }
  
      100% {
        transform: translateY(-100vh) translateX(50vw) scale(1);
        opacity: 0;
      }
    }
    .cursor {
    position: fixed;
    top: 0;
    left: 0;
    width: 40px;
    height: 40px;
    margin-left: -20px; /* half width */
    margin-top: -20px;  /* half height */
    border-radius: 50%;
    pointer-events: none;
    background: rgba(134, 110, 237, 0.6);
    box-shadow: 0 0 8px 4px rgba(134, 110, 237, 0.7);
    transition: transform 0.1s ease-out;
    mix-blend-mode: screen;
    z-index: 9999;
    transform: translate3d(0, 0, 0);
  }