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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background: #f8f9fa;
        }

        header {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            z-index: 1000;
        }

        nav {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
        }

        .logo img {
            height: 60px;
            width: auto;
            transition: transform 0.3s ease;
        }

        .logo img:hover {
            transform: scale(1.05);
        }

        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
            align-items: center;
        }

        .nav-links a {
            text-decoration: none;
            color: #333;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .nav-links a:hover {
            color: #10b981;
        }

        .contact-btn {
            background: linear-gradient(135deg, #10b981 0%, #059669 100%);
            color: white !important;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
            transition: all 0.3s ease;
        }

        .contact-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
        }

        /* Mobile Menu Button */
        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 0.5rem;
            z-index: 1001;
        }

        .mobile-menu-btn span {
            width: 25px;
            height: 3px;
            background: #10b981;
            border-radius: 3px;
            transition: all 0.3s ease;
        }

        .mobile-menu-btn.active span:nth-child(1) {
            transform: rotate(45deg) translate(8px, 8px);
        }

        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu-btn.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -7px);
        }

        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-menu-overlay.active {
            opacity: 1;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            right: -100%;
            width: 80%;
            max-width: 350px;
            height: 100%;
            background: white;
            box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
            z-index: 1000;
            overflow-y: auto;
            transition: right 0.3s ease;
            padding: 5rem 2rem 2rem;
        }

        .mobile-menu.active {
            right: 0;
        }

        .mobile-menu-links {
            list-style: none;
            padding: 0;
        }

        .mobile-menu-links li {
            margin-bottom: 0.5rem;
        }

        .mobile-menu-links a {
            display: block;
            padding: 1rem;
            color: #333;
            text-decoration: none;
            font-weight: 500;
            border-radius: 10px;
            transition: all 0.3s ease;
        }

        .mobile-menu-links a:hover {
            background: #f0fdf4;
            color: #10b981;
            transform: translateX(5px);
        }

        .mobile-menu-links .contact-btn {
            margin-top: 1rem;
            text-align: center;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 8rem 2rem 4rem;
        }

        .page-title {
            text-align: center;
            font-size: 2.8rem;
            margin-bottom: 1rem;
            font-weight: 800;
            color: #333;
        }

        .page-subtitle {
            text-align: center;
            font-size: 1.2rem;
            color: #666;
            margin-bottom: 4rem;
        }

        .video-category {
            margin-bottom: 4rem;
        }

        .category-title {
            font-size: 2rem;
            font-weight: 700;
            color: #10b981;
            margin-bottom: 2rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #10b981;
        }

        .video-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2.5rem;
            margin-top: 2rem;
        }

        .video-card {
            background: white;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .video-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
        }

        .video-wrapper {
            position: relative;
            width: 100%;
            padding-bottom: 56.25%;
            background: #000;
            overflow: hidden;
        }

        .video-thumbnail {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            transition: transform 0.3s ease;
        }

        .video-card:hover .video-thumbnail {
            transform: scale(1.05);
        }

        .play-button {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 70px;
            height: 70px;
            background: rgba(16, 185, 129, 0.9);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: white;
            transition: all 0.3s ease;
        }

        .video-card:hover .play-button {
            background: rgba(5, 150, 105, 1);
            transform: translate(-50%, -50%) scale(1.1);
            box-shadow: 0 10px 30px rgba(16, 185, 129, 0.5);
        }

        .video-wrapper video {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .video-info {
            padding: 1.5rem;
        }

        .video-info h3 {
            font-size: 1.3rem;
            color: #333;
            margin-bottom: 0.8rem;
        }

        .video-info p {
            color: #666;
            line-height: 1.6;
            font-size: 0.95rem;
        }

        .video-badge {
            display: inline-block;
            background: #fef3c7;
            color: #92400e;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-top: 0.8rem;
        }

        /* Video Modal */
        .video-modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 9999;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 2rem;
        }

        .video-modal.active {
            display: flex;
            animation: fadeIn 0.3s ease;
        }

        .video-modal-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.9);
        }

        .video-modal-content {
            position: relative;
            z-index: 1;
            max-width: 1200px;
            width: 100%;
            background: white;
            border-radius: 20px;
            overflow: hidden;
            animation: slideUp 0.4s ease;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
        }

        .video-modal-close {
            position: absolute;
            top: 1rem;
            right: 1rem;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.9);
            border: none;
            border-radius: 50%;
            font-size: 1.5rem;
            color: #333;
            cursor: pointer;
            z-index: 10;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .video-modal-close:hover {
            background: white;
            transform: rotate(90deg);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }

        .video-modal-wrapper {
            position: relative;
            width: 100%;
            padding-bottom: 56.25%;
            background: #000;
        }

        .video-modal-wrapper video {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
        }

        .video-modal-info {
            padding: 2rem;
            background: white;
        }

        .video-modal-info h3 {
            font-size: 1.8rem;
            color: #333;
            margin-bottom: 0.8rem;
        }

        .video-modal-info p {
            color: #666;
            line-height: 1.8;
            font-size: 1.1rem;
        }

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

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        footer {
            background: #1a1a1a;
            color: white;
            padding: 2rem;
            text-align: center;
            margin-top: 4rem;
        }

        @media (max-width: 968px) {
            .nav-links {
                display: none;
            }

            .mobile-menu-btn {
                display: flex;
            }

            .mobile-menu,
            .mobile-menu-overlay {
                display: block;
            }

            .video-grid {
                grid-template-columns: 1fr;
            }

            .page-title {
                font-size: 2rem;
            }

            .category-title {
                font-size: 1.5rem;
            }

            .video-modal {
                padding: 1rem;
            }

            .video-modal-info {
                padding: 1.5rem;
            }

            .video-modal-info h3 {
                font-size: 1.3rem;
            }

            .video-modal-info p {
                font-size: 0.95rem;
            }

            .play-button {
                width: 60px;
                height: 60px;
                font-size: 1.5rem;
            }
        }