.hero-section {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            background: linear-gradient(to bottom, #000000, #1a1a2e, #16213e);
            margin-bottom:70px;
        }

        /* Canvas for code rain effect */
        #matrix-canvas {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
        }

        /* Content wrapper */
        .hero-content {
            position: relative;
            z-index: 10;
            text-align: center;
            color: white;
            padding: 40px 20px;
            max-width: 900px;
            background: rgba(0, 0, 0, 0.3);
            border-radius: 20px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hero-content h1 {
        font-size: 3.5em;
            margin-bottom: 20px;
            text-shadow: 0 0 20px rgba(0, 255, 0, 0.5);
            font-weight: 700;
            color: #00ff00;
        
       
      text-shadow: 0 0 20px rgba(0, 255, 255, 0.5);
      animation: glow 2s ease-in-out infinite alternate;
        }

    @keyframes glow {
      from { text-shadow: 0 0 20px rgba(0, 255, 255, 0.5); }
      to { text-shadow: 0 0 30px rgba(0, 255, 255, 0.8), 0 0 40px rgba(0, 255, 255, 0.6); }
    }

        .hero-content p {
            font-size: 1.3em;
            margin-bottom: 30px;
            text-shadow: 1px 1px 4px rgba(0,0,0,0.8);
            line-height: 1.6;
            color: #e0e0e0;
        }

        .cta-button {
            padding: 18px 45px;
            background: linear-gradient(135deg, #00ff00 0%, #00cc00 100%);
            color: #000;
            text-decoration: none;
            border-radius: 50px;
            font-weight: bold;
            font-size: 1.1em;
            transition: all 0.3s ease;
            display: inline-block;
            box-shadow: 0 10px 30px rgba(0, 255, 0, 0.3);
        }

        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(0, 255, 0, 0.5);
            background: linear-gradient(135deg, #00cc00 0%, #009900 100%);
        }

        /* Services section with tech badges */
        .services-badges {
            position: relative;
            z-index: 10;
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .badge {
            padding: 12px 25px;
            background: rgba(0, 255, 0, 0.1);
            border: 1px solid rgba(0, 255, 0, 0.3);
            border-radius: 25px;
            color: #00ff00;
            font-size: 0.9em;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .hero-content h1 {
                font-size: 2em;
            }

            .hero-content p {
                font-size: 1em;
            }

            .cta-button {
                padding: 15px 35px;
                font-size: 1em;
            }

            .content-section h2 {
                font-size: 1.8em;
            }

            .services-badges {
                gap: 10px;
            }

            .badge {
                padding: 10px 20px;
                font-size: 0.8em;
            }
        }

/* ================= SERVICES ================= */
/* Services Grid Section */
.services {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  width: 100%;
  padding: 60px 0;
}

/* Service Card Styles */
.service-card {
  background: #ffffff;
  border-radius: 12px;
  padding: 2.5rem 2rem;
 box-shadow: 20px 20px 50px grey;
  transition: all 0.3s ease;
  text-align: center;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
   border: 1px solid rgba(0, 255, 255, 0.2);
   backdrop-filter: blur(10px);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #3498db, #2ecc71, #e74c3c);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.service-card:hover {
  transform: translateY(-10px);
 border-color: #3498db;
 box-shadow: 0 10px 30px rgba(0, 255, 255, 0.3);
}

.service-card:hover::before {
  transform: scaleX(1);
}

/* Service Card Heading */
.service-card h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  color: #2c3e50;
  margin: 0 0 1rem;
  font-weight: 700;
  line-height: 1.4;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

/* Service Card Paragraph */
.service-card p {
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  color: #555;
  line-height: 1.6;
  margin: 0;
  font-weight: 400;
}

/* Desktop - 1200px and below */
@media (max-width: 1200px) {
  .services {
    padding: 55px 0;
  }
}

/* Tablet Landscape - 1024px and below */
@media (max-width: 1024px) {
  .services {
    gap: 1.5rem;
    padding: 50px 0;
  }
  
  .service-card {
    padding: 2rem 1.5rem;
  }
}

/* Tablet Portrait - 768px and below */
@media (max-width: 768px) {
  .services {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    padding: 40px 0;
  }
  
  .service-card {
    padding: 2rem 1.5rem;
  }
  
  .service-card:last-child {
    grid-column: 1 / -1;
    max-width: 500px;
    margin: 0 auto;
    width: 100%;
  }
}

/* Mobile Landscape - 640px and below */
@media (max-width: 640px) {
  .services {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    padding: 35px 0;
  }
  
  .service-card {
    padding: 1.75rem 1.5rem;
  }
  
  .service-card:last-child {
    grid-column: auto;
    max-width: 100%;
  }
}

/* Mobile Portrait - 480px and below */
@media (max-width: 480px) {
  .services {
    gap: 1rem;
    padding: 30px 0;
  }
  
  .service-card {
    padding: 1.5rem 1.25rem;
    border-radius: 10px;
  }
  
  .service-card h3 {
    margin: 0 0 0.75rem;
  }
}

/* Extra Small Mobile - 360px and below */
@media (max-width: 360px) {
  .services {
    padding: 25px 0;
  }
  
  .service-card {
    padding: 1.25rem 1rem;
  }
  
  .service-card h3 {
    flex-direction: column;
    gap: 0.25rem;
  }
}

/* Print Styles */
@media print {
  .services {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 20px 0;
  }
  
  .service-card {
    box-shadow: none;
    border: 1px solid #ddd;
    page-break-inside: avoid;
  }
  
  .service-card::before {
    display: none;
  }
}

/*video */

/* ===============================================
   COMPLETE FIXED CSS FOR ALL SECTIONS
   This replaces video-row, why, and hexagon sections
   =============================================== */

/* ================= VIDEO SECTION ================= */
.video-row {
   display: grid;
   grid-template-columns: 1fr 1fr;
   gap: 1.5rem;
   margin-bottom: 80px;
}

.video-section {
   background: white;
   border-radius: 12px;
   box-shadow: 20px 20px 50px grey;
   overflow: hidden;
   transition: all 0.3s;
   backdrop-filter: blur(10px);
}

.video-section:hover {
   transform: translateY(-10px);
   border-color: #00ffff;
   box-shadow: 0 10px 30px rgba(0, 255, 255, 0.3);
}

.section-header {
   padding: 20px;
   color: white;
   font-size: 1.25rem;
   font-weight: bold;
   text-align: center;
}

.bangla-header {
   background: linear-gradient(to right, #059669, #047857);
}

.english-header {
   background: linear-gradient(to right, #2563eb, #1d4ed8);
}

 .youtube-container {
   position: relative;
   padding-bottom: 56.25%;
   height: 0;
   overflow: hidden;
   background: #000;
   cursor: pointer;
}

.youtube-container.not-loaded {
   background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
}

.youtube-container img {
   position: absolute;
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
   object-fit: cover;
   transition: opacity 0.3s;
}

.youtube-container:hover img {
   opacity: 0.8;
}

.youtube-container .play-button-large {
   position: absolute;
   top: 50%;
   left: 50%;
   transform: translate(-50%, -50%);
   width: 80px;
   height: 56px;
   background: rgba(255, 0, 0, 0.9);
   border-radius: 16px;
   transition: all 0.3s;
   z-index: 2;
}

.youtube-container:hover .play-button-large {
   background: rgba(255, 0, 0, 1);
   transform: translate(-50%, -50%) scale(1.1);
}

.youtube-container .play-button-large:before {
   content: "";
   position: absolute;
   top: 50%;
   left: 50%;
   transform: translate(-35%, -50%);
   width: 0;
   height: 0;
   border-left: 26px solid #fff;
   border-top: 16px solid transparent;
   border-bottom: 16px solid transparent;
}

.youtube-container iframe {
   position: absolute;
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
   border: 0;
}

.video-info {
   padding: 20px;
   border-bottom: 1px solid #e5e7eb;
}

.video-title {
   font-size: 1.125rem;
   font-weight: 600;
   color: #1f2937;
   margin-bottom: 8px;
   text-align: center;
}

.youtube-badge {
   display: inline-flex;
   align-items: center;
   gap: 5px;
   background: #ff0000;
   color: white;
   padding: 8px 16px;
   border-radius: 4px;
   font-size: 0.875rem;
   font-weight: 600;
   margin-top: 10px;
   text-decoration: none;
   transition: background 0.3s;
}

.youtube-badge:hover {
   background: #cc0000;
}

.youtube-badge svg {
   width: 18px;
   height: 18px;
   fill: white;
}

.badge-cntainer {
   text-align: center;
}

.video-list-container {
   background: #f9fafb;
   padding: 20px;
}

.list-title {
   font-weight: 600;
   color: #374151;
   margin-bottom: 15px;
   font-size: 1.1rem;
   text-align: center;
}

.video-list {
   max-height: 400px;
   overflow-y: auto;
}

.video-item {
   display: flex;
   gap: 12px;
   padding: 12px;
   cursor: pointer;
   border-radius: 8px;
   margin-bottom: 12px;
   transition: all 0.3s;
   background: white;
}

.video-item:hover {
   box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
   transform: translateY(-2px);
}

.video-item.active {
   background: #fff;
   border: 3px solid #059669;
}

.english-section .video-item.active {
   border: 3px solid #2563eb;
}

.video-thumbnail {
   position: relative;
   flex-shrink: 0;
}

.video-thumbnail img {
   width: 168px;
   height: 94px;
   object-fit: cover;
   border-radius: 6px;
}

.play-overlay {
   position: absolute;
   top: 50%;
   left: 50%;
   transform: translate(-50%, -50%);
   width: 40px;
   height: 40px;
   background: rgba(255, 0, 0, 0.9);
   border-radius: 50%;
   display: flex;
   align-items: center;
   justify-content: center;
   transition: transform 0.3s;
}

.video-item:hover .play-overlay {
   transform: translate(-50%, -50%) scale(1.1);
}

.play-overlay::after {
   content: '';
   width: 0;
   height: 0;
   border-left: 12px solid white;
   border-top: 8px solid transparent;
   border-bottom: 8px solid transparent;
   margin-left: 3px;
}

.video-details {
   flex: 1;
   min-width: 0;
   display: flex;
   align-items: center;
   justify-content: center;
}

.item-title {
   font-weight: 600;
   font-size: 0.9rem;
   color: #1f2937;
   margin-bottom: 0;
   display: -webkit-box;
   -webkit-line-clamp: 2;
   -webkit-box-orient: vertical;
   overflow: hidden;
   line-height: 1.4;
   text-align: center;
}

.video-list::-webkit-scrollbar {
   width: 8px;
}

.video-list::-webkit-scrollbar-track {
   background: #f1f1f1;
   border-radius: 10px;
}

.video-list::-webkit-scrollbar-thumb {
   background: #cbd5e1;
   border-radius: 10px;
}

.video-list::-webkit-scrollbar-thumb:hover {
   background: #94a3b8;
}

/* ================= WHY SECTION ================= */
.why {
   margin-bottom: 80px;
   display: grid;
   grid-template-columns: repeat(2, 1fr);
   gap: 1.5rem;
}

.why-box-one,
.why-box-two,
.why-box-three,
.why-box-four {
   background: #ffffff;
   padding: 30px;
   border-radius: 12px;
   box-shadow: 20px 20px 50px grey;
   transition: all 0.3s ease;
   border-left: 4px solid transparent;
   backdrop-filter: blur(10px);
}

.why-box-one:hover,
.why-box-two:hover,
.why-box-three:hover,
.why-box-four:hover {
   transform: translateY(-10px);
   box-shadow: 0 10px 30px rgba(0, 255, 255, 0.3);
}

.why-box-one {
   border-left-color: #667eea;
}

.why-box-two {
   border-left-color: #764ba2;
}

.why-box-three {
   border-left-color: #f093fb;
}

.why-box-four {
   border-left-color: #4facfe;
}

.why-box-one h2,
.why-box-two h2,
.why-box-three h2,
.why-box-four h2 {
   font-size: 1.4rem;
   margin-bottom: 20px;
   color: #1a1a1a;
   font-weight: 700;
   line-height: 1.3;
   text-align: center;
}

.why-box-one p,
.why-box-two p,
.why-box-three p,
.why-box-four p {
   font-size: 1.05rem;
   line-height: 1.8;
   color: #4a4a4a;
   margin-bottom: 15px;
}

.why-box-one p:last-child,
.why-box-two p:last-child {
   margin-bottom: 0;
}

.why-box-two ul,
.why-box-three ul,
.why-box-four ul {
   list-style: none;
   padding: 0;
   margin: 0;
}

.why-box-two ul li,
.why-box-three ul li,
.why-box-four ul li {
   font-size: 1.05rem;
   line-height: 1.8;
   color: #4a4a4a;
   margin-bottom: 12px;
   padding-left: 8px;
}

.why-box-two ul li:first-child {
   font-weight: 600;
   color: #667eea;
   font-size: 1.1rem;
   margin-bottom: 15px;
}

.why-box-two ul li:last-child,
.why-box-three ul li:last-child,
.why-box-four ul li:last-child {
   margin-bottom: 0;
}

/* ================= HEXAGON SECTION ================= */
.hexagon {
   background: linear-gradient(135deg, #1e3c72, #2a5298);
   padding: 40px 30px;
   border-radius: 12px;
   box-shadow: 20px 20px 50px grey;
   text-align: center;
   display: flex;
   flex-direction: column;
   justify-content: center;
   align-items: center;
   position: relative;
   overflow: hidden;
   margin-bottom: 60px;
   transition: all 0.3s;
   backdrop-filter: blur(10px);
}

.hexagon:hover {
   transform: translateY(-10px);
   border-color: #00ffff;
   box-shadow: 0 10px 30px rgba(0, 255, 255, 0.3);
}

.hexagon::before {
   content: '';
   position: absolute;
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
   background-image: 
       linear-gradient(30deg, transparent 40%, rgba(255,255,255,0.1) 40%, rgba(255,255,255,0.1) 60%, transparent 60%),
       linear-gradient(150deg, transparent 40%, rgba(255,255,255,0.1) 40%, rgba(255,255,255,0.1) 60%, transparent 60%);
   background-size: 80px 140px;
   animation: hexMove 20s linear infinite;
   pointer-events: none;
   z-index: 1;
}

@keyframes hexMove {
   0% { background-position: 0 0; }
   100% { background-position: 80px 140px; }
}

.hexagon h2,
.hexagon p,
.hexagon .btn {
   position: relative;
   z-index: 2;
}

.hexagon h2 {
   font-size: 2.5rem;
   margin-bottom: 20px;
   color: white;
   font-weight: 700;
}

.hexagon p {
   font-size: 1.1rem;
   line-height: 1.8;
   color: white;
   margin-bottom: 15px;
}

.hexagon p a {
   color: white;
   text-decoration: none;
   font-weight: 600;
   transition: color 0.3s ease;
}

.hexagon p a:hover {
   color: #ffd700;
   text-decoration: underline;
}

.hexagon .btn {
   display: inline-block;
   margin: 20px auto 0;
   padding: 15px 35px;
   background: transparent;
   color: #fff;
   border: 2px solid #fff;
   border-radius: 30px;
   cursor: pointer;
   font-size: 1.1rem;
   font-weight: 600;
   transition: all 0.3s ease;
   box-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
}

.hexagon .btn a {
   color: white;
   text-decoration: none;
}

.hexagon .btn:hover {
   background: rgba(255, 255, 255, 0.1);
   border-color: #ffd700;
   transform: translateY(-2px);
   box-shadow: 0 6px 20px rgba(255, 255, 255, 0.3);
}

/* ===============================================
   RESPONSIVE STYLES - 1024px and below
   =============================================== */
@media screen and (max-width: 1024px) {
   .video-row {
      grid-template-columns: 1fr;
      gap: 1.5rem;
      margin-bottom: 70px;
   }
   
   .why {
      gap: 1.5rem;
      margin-bottom: 70px;
   }
   
   .hexagon {
      padding: 35px 25px;
      margin-bottom: 55px;
   }
   
   .hexagon h2 {
      font-size: 2.2rem;
   }
}

/* ===============================================
   RESPONSIVE STYLES - 768px and below
   =============================================== */
@media (max-width: 768px) {
   .video-row {
      gap: 1.25rem;
      margin-bottom: 60px;
   }
   
   .video-thumbnail img {
      width: 140px;
      height: 78px;
   }
   
   .video-list {
      max-height: 350px;
   }
   
   .why {
      grid-template-columns: 1fr;
      gap: 1.25rem;
      margin-bottom: 60px;
   }
   
   .why-box-one,
   .why-box-two,
   .why-box-three,
   .why-box-four {
      padding: 20px;
   }
   
   .why-box-one h2,
   .why-box-two h2,
   .why-box-three h2,
   .why-box-four h2 {
      font-size: 1.1rem;
      margin-bottom: 15px;
   }
   
   .why-box-one p,
   .why-box-two p,
   .why-box-three p,
   .why-box-four p,
   .why-box-two ul li,
   .why-box-three ul li,
   .why-box-four ul li {
      font-size: 0.95rem;
   }
   
   .hexagon {
      padding: 30px 20px;
      margin-bottom: 50px;
   }
   
   .hexagon h2 {
      font-size: 2rem;
   }
   
   .hexagon p {
      font-size: 1rem;
      line-height: 1.6;
   }
   
   .hexagon .btn {
      padding: 12px 28px;
      font-size: 1rem;
   }
}

/* ===============================================
   RESPONSIVE STYLES - 480px and below
   =============================================== */
@media (max-width: 480px) {
   .video-row {
      gap: 1rem;
      margin-bottom: 50px;
   }
   
   .video-thumbnail img {
      width: 120px;
      height: 68px;
   }
   
   .item-title {
      font-size: 0.85rem;
   }
   
   .why {
      gap: 1rem;
      margin-bottom: 50px;
   }
   
   .why-box-one,
   .why-box-two,
   .why-box-three,
   .why-box-four {
      padding: 18px;
   }
   
   .why-box-one h2,
   .why-box-two h2,
   .why-box-three h2,
   .why-box-four h2 {
      font-size: 1rem;
   }
   
   .hexagon {
      padding: 25px 18px;
      border-radius: 8px;
      margin-bottom: 40px;
   }
   
   .hexagon h2 {
      font-size: 1.6rem;
      margin-bottom: 15px;
   }
   
   .hexagon p {
      font-size: 0.95rem;
      line-height: 1.6;
      margin-bottom: 12px;
   }
   
   .hexagon .btn {
      padding: 14px 20px;
      font-size: 1rem;
   }
}

/* ===============================================
   RESPONSIVE STYLES - 360px and below
   =============================================== */
@media (max-width: 360px) {
   .video-row {
      gap: 0.75rem;
      margin-bottom: 45px;
   }
   
   .why {
      gap: 0.75rem;
      margin-bottom: 45px;
   }
   
   .why-box-one,
   .why-box-two,
   .why-box-three,
   .why-box-four {
      padding: 15px;
   }
   
   .why-box-one h2,
   .why-box-two h2,
   .why-box-three h2,
   .why-box-four h2 {
      font-size: 1rem;
   }
   
   .why-box-one p,
   .why-box-two p,
   .why-box-three p,
   .why-box-four p,
   .why-box-two ul li,
   .why-box-three ul li,
   .why-box-four ul li {
      font-size: 0.85rem;
   }
   
   .hexagon {
      padding: 20px 15px;
      margin-bottom: 35px;
   }

   .hexagon h2 {
      font-size: 1.4rem;
   }
   
   .hexagon p {
      font-size: 0.9rem;
   }
}




/* ================= slide ================= */
.slid-er {
	border-width: 1px;
	border-color: lightgray;
	border-style: solid;
	height: 156px;
	margin: auto;
	overflow: hidden;
	width: 100%;
	margin-bottom: 70px;
	box-shadow: 0px 0px 6px 6px rgba(0, 0, 0, 0.3);
}

.slid-er .slides {
	display: flex;
}

.slide{
    background-color: #FF4500;
	border-width: 1px;
       border-style: solid;
	border-color: black;
	margin:6px;	
}


.slide-content {
	margin: 8px;
	width: 250px;
	height: 120px;
      border-radius: 12px;
	overflow: hidden;
	position: relative;
}
.slide-content p{
       background-color: transparent;
	text-decoration: none ;
	color: white;
	padding: 10px 0;
	margin: auto;
	font-size: 20px;
	text-align: center;
}



.button {
	 position: absolute;
	top: 0;
	height: 100%;
	width: 100%;
	opacity: 0;
	  background-color: transparent;
	cursor: pointer;
	transition: opacity 0.15s;
}

.button:hover {
	opacity: 1;
}

.button:hover .button {
	transform: translate(-50%, -50%);
	
}

.buttn {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, calc(-50% + 12px));
	background-color: rgba(0, 0, 0, 0.7);
	transition: all 0.25s;
	padding: 0 8px;
	border-radius: 12px;
	color: Gold;
	outline: 2px solid transparent;
	
}

.buttn: after {
	content: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAQElEQVR42qXKwQkAIAxDUUdxtO6/RBQkQZvSi8I/pL4BoGw/XPkh4XigPmsUgh0626AjRsgxHTkUThsG2T/sIlzdTsp52kSS1wAAAABJRU5ErkJggg==);
	margin: 0 3px 0 5px;
	filter: invert(1);

}

.buttn: hover {
	background-color: rgba(0, 0, 0, 0.9);
	box-shadow: 0 0 0 2px gray;
		
}
/* 1. Aurora Borealis Effect */
        .slide-content {
            background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
            color: white;
        }

     .slide-content::before {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, 
                transparent, 
                rgba(0, 255, 170, 0.3), 
                rgba(128, 0, 255, 0.3), 
                rgba(0, 170, 255, 0.3), 
                transparent);
            animation: auroraMove 5s ease infinite;
        }

        @keyframes auroraMove {
            0%, 100% { transform: translateX(-100%) skewX(-20deg); }
            50% { transform: translateX(100%) skewX(20deg); }
        }