body {
    font-family: 'Arial', sans-serif;
    background-color: #e8f5e9;
    color: #333;
    text-align: center;
    margin: 0;
    padding: 0;
}

header {
    background-color: #388E3C;
    padding: 15px 0;
    color: white;
}

.about-container {
    background: linear-gradient(135deg, #4CAF50, #2E7D32);
    color: #fff;
    padding: 50px 20px;
    text-align: center;
    margin: 20px auto;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    animation: fadeIn 1s ease-in-out;
    max-width: 800px;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.about-container h1 {
    font-size: 36px;
    margin-bottom: 20px;
    text-align: justify;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.about-container p {
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 20px;
    text-align: justify;
}

ul {
    list-style-type: none;
    padding: 0;
}

ul li {
    background-color: #e0f7fa;
    margin: 10px;
    padding: 15px;
    border-radius: 5px;
    text-align: justify;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease-in-out;
}

ul li:hover {
    transform: translateX(5px);
}

ul li strong {
    color: #00796b;
}

ul li span {
    color: #4CAF50;
}

.team-photo {
    border-radius: 50%;
    max-width: 300px;
    height: auto;
    margin-top: 20px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s;
}

.team-photo:hover {
    transform: scale(1.1);
}

.cta-button {
    display: inline-block;
    padding: 12px 30px;
    background-color: #2563eb;
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
  
.cta-button:hover {
    background-color: #1d4ed8;
    transform: scale(1.05);
    box-shadow: 0 6px 8px rgba(0, 0, 0, 0.15);
}
  
.cta-button:active {
    transform: scale(0.98);
}

@media (max-width: 768px) {
    .about-container {
        padding: 30px;
    }
    .about-container h1 {
        font-size: 28px;
    }
    .about-container p {
        font-size: 16px;
    }
}

:root {
  --primary-color: #2E7D32;
  --primary-hover: #1B5E20;
  --text-color: #333;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 30px 20px;
}

.card-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 30px;
}

.card {
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  padding: 30px;
  position: relative;
  transition: all 0.3s ease;
  border-top: 4px solid var(--primary-color);
  text-align: left;
}

.card p {
  font-size: 1.15rem;
  color: var(--text-color);
  line-height: 1.7;
  margin-bottom: 25px;
  font-weight: 500;
  text-align: left;
}

.card .options p {
  padding: 12px 20px;
  background: #f8f9fa;
  border-radius: 8px;
  border-left: 4px solid #e9ecef;
  transition: all 0.25s ease;
  cursor: pointer;
  text-align: left;
  margin: 8px 0;
}

.card .options p:hover {
  background: #f1f3f5;
  border-left-color: var(--primary-color);
}

.button-container {
  display: flex;
  justify-content: flex-end;
  margin-top: 20px;
}

.nav-btn,.back-to-top  {
  padding: 10px 25px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.25s ease;
  width: auto;
  white-space: nowrap;
  margin-top: 10px;
}

.nav-btn:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 2px 8px rgba(46, 125, 50, 0.3);
}

.answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
  background: #f8fafc;
  border-radius: 8px;
  margin-top: 20px;
  text-align: left;
}

.answer.show {
  max-height: 500px;
  padding: 20px;
  border-left: 4px solid var(--primary-color);
}

@media (max-width: 1100px) {
  .card-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .card {
    padding: 25px 20px;
  }
  
  .card .options p {
    padding: 10px 15px;
  }
  
  .nav-btn {
    padding: 10px 18px;
  }
}

.back-to-top {
    min-width: 140px;
    text-transform: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 99;
}
.top-btn{position:fixed;bottom:24px;right:24px;width:42px;height:42px;background:#1B5E20;color:#fff;border:none;border-radius:50%;font-size:1.2rem;cursor:pointer;box-shadow:0 3px 10px rgba(27,94,32,.4);z-index:999;display:flex;align-items:center;justify-content:center}
        .top-btn:hover{background:#0d3310}

.card.viewed {
    border-top-color: #2E7D32;
    margin-top: 10px;
}

.card.viewed::after {
    content: "👁️ Viewed";
    position: absolute;
    top: 15px;
    right: 15px;
    background: #2E7D32;
    color: white;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}
 .section-divider {
            text-align: center;
            margin: 2rem 0 1rem;
            font-size: 1.3rem;
            font-weight: 700;
            color: #1a3a5c;
            border-bottom: 2px dashed #ccc;
            padding-bottom: 0.5rem;
        }
        .section-divider i {
            margin-right: 10px;
        }
        .toc-box {
            background: #f0f7ff;
            border: 2px solid #2d6a9f;
            border-radius: 10px;
            padding: 1.5rem 2rem;
            margin-bottom: 2rem;
        }
        .toc-box h2 {
            color: #1a3a5c;
            font-size: 1.3rem;
            margin-bottom: 1rem;
        }
        .toc-box ul {
            list-style: none;
            padding: 0;
        }
        .toc-box ul li {
            padding: 0.4rem 0;
        }
        .toc-box ul li a {
            color: #2d6a9f;
            text-decoration: none;
            font-weight: 600;
            transition: color 0.3s;
        }
        .toc-box ul li a:hover {
            color: #1a3a5c;
            text-decoration: underline;
        }