@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');
        
        :root {
            --primary: #3a86ff;
            --primary-dark: #2667cc;
            --secondary: #8338ec;
            --success: #06d6a0;
            --success-dark: #05b184;
            --dark: #212529;
            --light: #f8f9fa;
            --gray: #6c757d;
            --light-gray: #e9ecef;
            --border-radius: 12px;
            --box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Poppins', sans-serif;
        }

        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #edf1f7 100%);
            min-height: 100vh;
            color: var(--dark);
            line-height: 1.6;
            display: flex;
            flex-direction: column;
        }

        .navbar {
            background-color: white;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
            padding: 1rem 0;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 100;
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            text-decoration: none;
            color: var(--primary);
            font-weight: 700;
            font-size: 1.5rem;
        }

        .logo i {
            font-size: 1.8rem;
        }

        .logo span {
            color: var(--secondary);
        }

        .nav-links {
            display: flex;
            gap: 1.5rem;
        }

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

        .nav-link:hover {
            color: var(--primary);
        }

        .hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            text-align: center;
            padding: 8rem 1rem 6rem;
            margin-top: 4rem;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -100px;
            left: -100px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255,255,255,0.1);
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255,255,255,0.1);
        }

        .hero h1 {
            font-size: 3rem;
            margin-bottom: 1rem;
            font-weight: 700;
        }

        .hero p {
            font-size: 1.2rem;
            max-width: 600px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }

        .container {
            max-width: 1000px;
            margin: -3rem auto 3rem;
            padding: 0 1.5rem;
            position: relative;
            z-index: 10;
        }

        .qr-generator {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 2.5rem;
            box-shadow: var(--box-shadow);
            position: relative;
        }

        .qr-generator::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 5px;
            background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
            border-radius: var(--border-radius) var(--border-radius) 0 0;
        }

        .section-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }

        .section-title i {
            color: var(--primary);
        }

        .input-group {
            margin-bottom: 2rem;
        }

        label {
            display: block;
            margin-bottom: 0.7rem;
            font-weight: 500;
            font-size: 1rem;
            color: var(--dark);
        }

        textarea, input {
            width: 100%;
            padding: 0.9rem 1.2rem;
            border: 2px solid var(--light-gray);
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
            background-color: var(--light);
        }

        textarea {
            min-height: 120px;
            resize: vertical;
        }

        textarea:focus, input:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(58, 134, 255, 0.2);
        }

        .options-container {
            background-color: var(--light);
            border-radius: var(--border-radius);
            padding: 1.5rem;
            margin-bottom: 2rem;
        }

        .options-title {
            font-size: 1.1rem;
            font-weight: 500;
            margin-bottom: 1.2rem;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .options-title i {
            color: var(--secondary);
        }

        .options-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
        }

        .option-item {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .option-label {
            font-size: 0.95rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .option-label i {
            color: var(--primary);
            font-size: 0.9rem;
        }

        .color-option {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }

        .color-preview {
            width: 25px;
            height: 25px;
            border-radius: 50%;
            border: 2px solid var(--light-gray);
            overflow: hidden;
        }

        .color-picker {
            -webkit-appearance: none;
            width: 30px;
            height: 30px;
            border: none;
            border-radius: 50%;
            cursor: pointer;
            background-color: transparent;
            box-shadow: none;
        }

        .color-picker::-webkit-color-swatch-wrapper {
            padding: 0;
        }

        .color-picker::-webkit-color-swatch {
            border: none;
            border-radius: 50%;
        }

        .btn {
            background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            border: none;
            border-radius: var(--border-radius);
            padding: 1rem 1.5rem;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(0,0,0,0.15);
        }

        .btn-lg {
            padding: 1.2rem 2rem;
            font-size: 1.1rem;
        }

        .btn-success {
            background: linear-gradient(90deg, var(--success) 0%, #08c4bd 100%);
        }

        .result-container {
            margin-top: 3rem;
            display: none;
        }

        .result-content {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }

        @media (min-width: 768px) {
            .result-content {
                flex-direction: row;
            }
        }

        .result-preview {
            flex: 1;
            background-color: var(--light);
            border-radius: var(--border-radius);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 2rem;
            box-shadow: var(--box-shadow);
        }

        .qr-display {
            position: relative;
            margin: 0 auto;
            background-color: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: var(--transition);
        }

        .qr-display:hover {
            transform: scale(1.02);
        }

        .qr-image {
            display: block;
            margin: 0 auto;
        }

        .qr-marker {
            position: absolute;
            width: 15px;
            height: 15px;
            background-color: white;
        }

        .qr-marker-tl {
            top: 0;
            left: 0;
            border-top: 4px solid var(--primary);
            border-left: 4px solid var(--primary);
        }

        .qr-marker-tr {
            top: 0;
            right: 0;
            border-top: 4px solid var(--secondary);
            border-right: 4px solid var(--secondary);
        }

        .qr-marker-bl {
            bottom: 0;
            left: 0;
            border-bottom: 4px solid var(--secondary);
            border-left: 4px solid var(--secondary);
        }

        .qr-marker-br {
            bottom: 0;
            right: 0;
            border-bottom: 4px solid var(--primary);
            border-right: 4px solid var(--primary);
        }

        .result-details {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .result-info {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            padding: 1.5rem;
        }

        .result-info-title {
            font-size: 1.1rem;
            font-weight: 500;
            margin-bottom: 1rem;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .result-info-title i {
            color: var(--secondary);
        }

        .info-item {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 0.5rem;
            font-size: 0.95rem;
        }

        .info-label {
            font-weight: 500;
            color: var(--gray);
        }

        .info-value {
            color: var(--dark);
            word-break: break-all;
        }

        .download-options {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .download-msg {
            background-color: rgba(6, 214, 160, 0.1);
            border-left: 3px solid var(--success);
            padding: 0.8rem 1rem;
            border-radius: 4px;
            font-size: 0.9rem;
            color: var(--dark);
        }

        footer {
            background-color: white;
            padding: 1.5rem 0;
            margin-top: auto;
            text-align: center;
            box-shadow: 0 -4px 10px rgba(0,0,0,0.03);
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }

        .footer-logo span {
            color: var(--primary);
        }

        .copyright {
            font-size: 0.9rem;
            color: var(--gray);
        }

        .footer-links {
            display: flex;
            gap: 1.5rem;
        }

        .footer-link {
            color: var(--gray);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .footer-link:hover {
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            
            .nav-links {
                display: none;
            }
            
            .options-grid {
                grid-template-columns: 1fr;
            }
            
            .footer-content {
                flex-direction: column;
                gap: 1.5rem;
            }
            
            .footer-links {
                flex-wrap: wrap;
                justify-content: center;
            }
            
            .qr-generator {
                padding: 1.5rem;
            }
        }

        /* Animações */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .animate-fade {
            animation: fadeIn 0.5s ease-out;
        }
        
        .pulse {
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }

        /* Tooltip */
        .tooltip {
            position: relative;
            display: inline-block;
        }

        .tooltip .tooltiptext {
            visibility: hidden;
            width: 120px;
            background-color: #333;
            color: #fff;
            text-align: center;
            border-radius: 6px;
            padding: 5px;
            position: absolute;
            z-index: 1;
            bottom: 125%;
            left: 50%;
            margin-left: -60px;
            opacity: 0;
            transition: opacity 0.3s;
        }

        .tooltip:hover .tooltiptext {
            visibility: visible;
            opacity: 1;
        }