:root {
            --primary-color: #4361ee;
            --secondary-color: #3f37c9;
            --accent-color: #4895ef;
            --dark-color: #121212;
            --light-color: #ffffff;
            --gray-color: #f0f2f5;
            --success-color: #2ecc71;
            --warning-color: #f39c12;
            --danger-color: #e74c3c;
        }
        body {
            font-family: 'Poppins', sans-serif;
            background-color: var(--gray-color);
            color: var(--dark-color);
            line-height: 1.6;
            position: relative;
            min-height: 100vh;
        }
        .navbar {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            padding: 15px 0;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--light-color) !important;
        }
        .nav-link {
            color: rgba(255, 255, 255, 0.9) !important;
            font-weight: 500;
            margin: 0 10px;
            transition: all 0.3s ease;
        }
        .nav-link:hover {
            color: var(--light-color) !important;
            transform: translateY(-2px);
        }
        .nav-link.active {
            color: var(--light-color) !important;
            border-bottom: 2px solid var(--light-color);
        }
        .navbar-toggler {
            border: none;
            color: var(--light-color);
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: var(--light-color);
            padding: 60px 0;
            border-radius: 0 0 30px 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            margin-bottom: 40px;
        }
        .hero-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            opacity: 0.9;
            margin-bottom: 30px;
        }
        .main-container {
            max-width: 1000px;
            margin: 0 auto 60px;
            padding: 0 15px;
        }
        .uploader-card {
            background-color: var(--light-color);
            border-radius: 20px;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.05);
            overflow: hidden;
            margin-bottom: 30px;
            transition: transform 0.3s ease;
        }
        .uploader-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }
        .uploader-header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: var(--light-color);
            padding: 25px 30px;
            border-radius: 20px 20px 0 0;
        }
        .uploader-body {
            text-align: center;
            padding: 30px;
        }
        
        .g-recaptcha {
            display: block;
            margin: 0 auto;
            width: 304px;
        }
        .file-upload-area {
            border: 2px dashed #ddd;
            border-radius: 15px;
            padding: 50px 30px;
            text-align: center;
            transition: all 0.3s ease;
            background-color: #f9f9f9;
            position: relative;
            cursor: pointer;
        }
        .file-upload-area:hover {
            border-color: var(--accent-color);
            background-color: #f0f7ff;
        }
        .file-upload-area.highlight {
            border-color: var(--primary-color);
            background-color: rgba(67, 97, 238, 0.05);
            transform: scale(1.01);
        }
        .file-upload-input {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            cursor: pointer;
        }
        .upload-icon {
            font-size: 80px;
            color: var(--primary-color);
            margin-bottom: 20px;
            transition: transform 0.3s ease;
        }
        .file-upload-area:hover .upload-icon {
            transform: translateY(-5px);
        }
        .btn-primary-custom {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: var(--light-color);
            border: none;
            border-radius: 10px;
            padding: 12px 30px;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(67, 97, 238, 0.3);
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(67, 97, 238, 0.4);
            background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
        }
        .btn-primary-custom:active {
            transform: translateY(0);
        }
        .btn-outline-custom {
            color: var(--primary-color);
            background: transparent;
            border: 2px solid var(--primary-color);
            border-radius: 10px;
            padding: 10px 30px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-outline-custom:hover {
            background-color: var(--primary-color);
            color: var(--light-color);
            transform: translateY(-3px);
        }
        .file-info-card {
            background-color: #f8f9fa;
            border-radius: 15px;
            padding: 25px;
            margin-top: 40px;
            border: 1px solid #eee;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.03);
            position: relative;
            overflow: hidden;
        }
        .file-info-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
        }
        .file-info-title {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
            color: var(--primary-color);
        }
        .file-info-title i {
            margin-right: 10px;
            font-size: 1.2rem;
        }
        .file-info-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 10px;
            border-bottom: 1px solid #eee;
        }
        .file-info-row:last-child {
            border-bottom: none;
        }
        .file-info-label {
            font-weight: 600;
            color: #555;
        }
        .file-info-value {
            color: var(--dark-color);
        }
        .file-preview {
            margin-top: 30px;
            text-align: center;
            background-color: #fafafa;
            border-radius: 15px;
            padding: 20px;
            border: 1px solid #eee;
        }
        .file-preview h5 {
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .file-preview img, .file-preview video {
            max-width: 100%;
            max-height: 400px;
            border-radius: 10px;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .url-container {
            position: relative;
        }
        .copy-url-btn {
            background-color: var(--accent-color);
            color: white;
            border: none;
            border-radius: 5px;
            padding: 5px 15px;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .copy-url-btn:hover {
            background-color: var(--secondary-color);
            transform: translateY(-2px);
        }
        .copy-tooltip {
            position: absolute;
            top: -40px;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--dark-color);
            color: var(--light-color);
            padding: 5px 10px;
            border-radius: 5px;
            font-size: 0.8rem;
            pointer-events: none;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .copy-tooltip.show {
            opacity: 1;
        }
        .features-section {
            padding: 50px 0;
        }
        .feature-card {
            background-color: var(--light-color);
            border-radius: 15px;
            padding: 25px;
            text-align: center;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s ease;
            height: 100%;
            border-top: 5px solid var(--primary-color);
        }
        .feature-card:hover {
            transform: translateY(-10px);
        }
        .feature-icon {
            font-size: 40px;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .feature-title {
            font-weight: 600;
            margin-bottom: 15px;
            color: var(--dark-color);
        }
        .alert-custom {
            border-radius: 10px;
            border: none;
            padding: 15px 20px;
            margin-bottom: 25px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .alert-custom-success {
            background-color: rgba(46, 204, 113, 0.1);
            border-left: 4px solid var(--success-color);
            color: #27ae60;
        }
        .alert-custom-danger {
            background-color: rgba(231, 76, 60, 0.1);
            border-left: 4px solid var(--danger-color);
            color: #c0392b;
        }
        .floating-btn {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: var(--light-color);
            border-radius: 50%;
            width: 60px;
            height: 60px;
            display: flex;
            justify-content: center;
            align-items: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .floating-btn:hover {
            transform: scale(1.1) rotate(10deg);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
        }
        .floating-btn i {
            font-size: 24px;
        }
        footer {
            background: var(--dark-color);
            color: var(--light-color);
            padding: 40px 0 20px;
            margin-top: 60px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        .footer-links a:hover {
            color: var(--light-color);
            padding-left: 5px;
        }
        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        .social-icon {
            width: 40px;
            height: 40px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            transition: all 0.3s ease;
        }
        .social-icon:hover {
            background-color: var(--primary-color);
            transform: translateY(-5px);
        }
        .copyright {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
        }
        .progress-container {
            width: 100%;
            background-color: #f0f0f0;
            border-radius: 10px;
            margin: 20px 0;
            overflow: hidden;
            height: 20px;
            display: none;
        }
        .progress-bar {
            height: 100%;
            width: 0;
            background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
            border-radius: 10px;
            transition: width 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 12px;
            font-weight: 600;
        }
        .loader {
            display: none;
            margin: 20px auto;
            border: 5px solid #f3f3f3;
            border-top: 5px solid var(--primary-color);
            border-radius: 50%;
            width: 50px;
            height: 50px;
            animation: spin 1s linear infinite;
        }
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        @media (max-width: 768px) {
            .hero-title { font-size: 2rem; }
            .hero-subtitle { font-size: 1rem; }
            .uploader-header { padding: 20px; }
            .uploader-body { padding: 20px; }
            .file-upload-area { padding: 30px 15px; }
            .upload-icon { font-size: 60px; }
            .floating-btn { width: 50px; height: 50px; bottom: 20px; right: 20px; }
            .floating-btn i { font-size: 20px; }
        }
        @media (max-width: 576px) {
            .hero-section { padding: 40px 0; }
            .hero-title { font-size: 1.8rem; }
            .file-info-row { flex-direction: column; align-items: flex-start; }
            .file-info-value { margin-top: 5px; word-break: break-all; }
            .url-container { flex-direction: column; }
            .copy-url-btn { margin-top: 10px; width: 100%; }
        }
        .fade-in-up {
            animation: fadeInUp 0.8s ease forwards;
            opacity: 0;
        }
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .delay-1 { animation-delay: 0.2s; }
        .delay-2 { animation-delay: 0.4s; }
        .delay-3 { animation-delay: 0.6s; }
        .delay-4 { animation-delay: 0.8s; }