:root {
    --gradient: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    --dark: #0f2027;
    --mid: #203a43;
    --accent: #2c5364;
    --card-bg: #bfc6cc;
    --text-dark: #1e293b;
    --text-light: #f1f5f9;
    --gray: #64748b;
  }

  .smart-classes-page {
    font-family: system-ui, -apple-system, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background: #6d8fa3;
  }

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }
  .hero-section {
    background: linear-gradient(rgba(37, 83, 102, 0.5), rgba(0, 39, 55, 0.5)), url('Images/Smart\ Classroom.jpg');
    background-size: cover;
    position: relative; 
    color: rgb(255, 255, 255);
    text-align: center;
    padding: 120px 20px 100px;
  }
  .hero-section {
    background: linear-gradient(rgba(37, 83, 102, 0.5), rgba(0, 39, 55, 0.5)), url('/Images/Smart_Classroom.jpg');
    background-size: contain, cover;
    background-repeat: no-repeat;
    background-position: relative;
    color: var(--text-light);
    text-align: center;
    padding: 120px 20px 100px;
  }

  .hero-content h1 {
    font-size: 3.4rem;
    margin-bottom: 1rem;
    font-weight: 700;
  }

  .hero-content p {
    font-size: 1.4rem;
    max-width: 700px;
    margin: 0 auto;
    opacity: 0.95;
  }

  .intro-section {
    padding: 80px 0;
    text-align: center;
    background: var(--section-bg);
  }

  .intro-section h2,
  .features-section h2,
  .benefits-section h2,
  .gallery-section h2 {
    font-size: 2.6rem;
    margin-bottom: 2.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .features-section,
  .benefits-section,
  .gallery-section {
    padding: 20px 0;
    background: var(--section-b);
  }

  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
  }

  .feature-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 6px 20px rgba(15, 32, 39, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
    border: 1px solid rgba(44, 83, 100, 0.1);
  }

  .feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(15, 32, 39, 0.12);
  }

  .feature-icon {
    font-size: 3.8rem;
    margin-bottom: 1.2rem;
    color: var(--accent);
  }

  .feature-card h3 {
    font-size: 1.55rem;
    margin-bottom: 1rem;
    color: var(--mid);
  }

  .benefits-section {
    background: #bfc6cc; /* very light gray for subtle separation */
  }

  .benefits-list ul {
    max-width: 800px;
    margin: 0 auto;
    list-style: none;
    padding: 0;
  }

  .benefits-list li {
    margin-bottom: 1.6rem;
    font-size: 1.15rem;
    padding-left: 2.2rem;
    position: relative;
  }

  .benefits-list li::before {
    content: "✔";
    color: var(--accent);
    position: absolute;
    left: 0;
    font-weight: bold;
    font-size: 1.3rem;
  }

  .gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.8rem;
  }

  .gallery-grid img {
    width: 100%;
    height: 260px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
    transition: transform 0.4s;
  }

  .gallery-grid img:hover {
    transform: scale(1.03);
  }

  .gallery-caption {
    text-align: center;
    font-style: italic;
    color: var(--text-dark
    );
    margin-top: 2rem;
    font-size: 1.5rem;
  }

  @media (max-width: 768px) {
    .hero-content h1 { font-size: 2.8rem; }
    .hero-content p  { font-size: 1.25rem; }
    .hero-section    { padding: 90px 15px 70px; }
  }