:root {
            --primary-green: #28a745;
            --dark-green: #218838;
            --text-dark: #333;
            --text-muted: #666;
            --bg-light: #f4f7f6;
        }

        body {
            font-family: 'Rubik', sans-serif;
            margin: 0;
            padding-top: 80px; 
            background-color: var(--bg-light);
            color: var(--text-dark);
        }

        /* ---  NAVBAR --- */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 80px;
            background: white;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 5%;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            border-bottom: 4px solid var(--primary-green);
            z-index: 1000;
            box-sizing: border-box;
        }

        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .logo { height: 45px; width: auto; }

        .nav-link {
            text-decoration: none;
            color: var(--primary-green);
            font-weight: 500;
            font-size: 0.95rem;
            transition: 0.3s;
        }

        .nav-link:hover { color: #ff0800; }

        /* --- HERO SECTION --- */
        .hero {
          
background-image: url('videos/bg.jpg'); 
background-size: cover;       
background-position: center;  
background-repeat: no-repeat; 


position: relative;
padding: 100px 20px;
color: white;
text-align: center;
overflow: hidden;
margin-bottom: 40px;
        }
        /* overlay */
.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5); 
  z-index: 1;
}


.hero * {
  position: relative;
  z-index: 2;
}

        .hero-circle-1 {
            position: absolute; top: -50px; right: -50px; width: 300px; height: 300px; 
            background: rgba(255,255,255,0.1); border-radius: 50%;
        }

        .hero-circle-2 {
            position: absolute; bottom: -50px; left: -50px; width: 200px; height: 200px; 
            background: rgba(255,255,255,0.05); border-radius: 50%;
        }

        .hero-content { position: relative; z-index: 2; max-width: 800px; margin: 0 auto; }

        /* --- VIDEO GRID --- */
        h2 { text-align: center; color: var(--primary-green); margin-bottom: 30px; font-size: 2rem; }

        .video-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr); 
            gap: 25px;
            padding: 0 5% 40px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .video-item {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column; 
        }

        .video-item:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.15);
        }

        video {
            width: 100%;
            aspect-ratio: 16/9;
            background: #000;
            border-bottom: 4px solid var(--primary-green);
        }

       
        .video-info {
            padding: 20px;
            text-align: center;
            flex-grow: 1;
        }

        .video-info h3 {
            margin: 0 0 10px 0;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
        }

        .video-info p {
            margin: 0;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* --- VIEW MORE BUTTON --- */
        .hidden-video { display: none; }

        #viewMoreBtn {
            display: block;
            margin: 20px auto 80px;
            padding: 14px 40px;
            background: var(--primary-green);
            color: white;
            border: none;
            border-radius: 50px;
            font-weight: bold;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.3s;
            box-shadow: 0 4px 10px rgba(40, 167, 69, 0.3);
        }

        #viewMoreBtn:hover {
            background: var(--dark-green);
            transform: scale(1.05);
        }

        /* --- RESPONSIVE --- */
        @media (max-width: 1100px) { .video-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 650px) { .video-grid { grid-template-columns: 1fr; } }