:root {
    --primary: linear-gradient(135deg, #bd93f9 0%, #ff79c6 100%);
    --primary-solid: #bd93f9;
    --secondary: #6272a4;
    --success: linear-gradient(135deg, #50fa7b 0%, #f1fa8c 100%);
    --success-solid: #50fa7b;
    --error: #ff5555;
    --warning: #f1fa8c;
    --background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --card-bg: rgba(40, 42, 54, 0.95);
    --text-primary: #e0e0ff;
    --text-secondary: #bd93f9;
    --border: rgba(98, 114, 164, 0.4);
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.3);
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

        * {
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background: var(--background);
            color: var(--text-primary);
            margin: 0;
            padding: 1rem;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        /* Header com logo */
        .top-header {
            text-align: center;
            margin-bottom: 2rem;
            max-width: 800px;
            width: 100%;
        }

        .logo {
            font-size: 4rem;
            margin-bottom: 0.5rem;
            animation: bounce 2s infinite;
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
            40% { transform: translateY(-10px); }
            60% { transform: translateY(-5px); }
        }

        main {
            background: var(--card-bg);
            backdrop-filter: blur(20px);
            border: 1px solid var(--border);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 2.5rem;
            width: 100%;
            max-width: 800px;
            margin-bottom: 2rem;
            transition: var(--transition);
        }

        main:hover {
            box-shadow: var(--shadow-hover);
        }

        .header {
            text-align: center;
            margin-bottom: 3rem;
        }

        h1 {
            background: var(--primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-size: 2.5rem;
            font-weight: 700;
            margin: 0 0 0.5rem 0;
            letter-spacing: -0.025em;
        }

        .subtitle {
            color: var(--text-secondary);
            font-size: 1.1rem;
            margin: 0 0 1rem 0;
            font-weight: 400;
        }

        .features {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 2rem;
        }

        .feature-badge {
            background: rgba(102, 126, 234, 0.1);
            color: var(--primary-solid);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            border: 1px solid rgba(102, 126, 234, 0.2);
        }

        .form-step {
            margin-bottom: 2rem;
            opacity: 0;
            transform: translateY(20px);
            animation: fadeInUp 0.6s ease forwards;
        }

        .form-step:nth-child(1) { animation-delay: 0.1s; }
        .form-step:nth-child(2) { animation-delay: 0.2s; }
        .form-step:nth-child(3) { animation-delay: 0.3s; }
        .form-step:nth-child(4) { animation-delay: 0.4s; }

        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .step-label {
            display: flex;
            align-items: center;
            font-weight: 600;
            font-size: 1.1rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .step-number {
            background: var(--primary);
            color: white;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            font-weight: 700;
            margin-right: 0.75rem;
        }

        .input-group {
            position: relative;
            margin-bottom: 1rem;
        }

        input[type="text"], input[type="color"] {
            width: 100%;
            padding: 1rem;
            border: 2px solid var(--border);
            border-radius: 12px;
            font-size: 1rem;
            transition: var(--transition);
            background: rgba(255, 255, 255, 0.8);
        }

        input[type="text"]:focus, input[type="color"]:focus {
            outline: none;
            border-color: var(--primary-solid);
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
            transform: translateY(-1px);
        }

        input[type="color"] {
            padding: 0.5rem;
            height: 60px;
            cursor: pointer;
        }

        .input-help {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 0.5rem;
            padding-left: 0.5rem;
        }

        .file-requirements {
    background: rgba(189, 147, 249, 0.1); /* mesmo tom do botão gratuito */
    border: 1px dashed rgba(189, 147, 249, 0.4); /* mesma cor, em borda tracejada */
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

        .file-requirements h4 {
            margin: 0 0 0.5rem 0;
            color: var(--warning);
            font-size: 0.9rem;
        }

        .file-requirements ul {
            margin: 0;
            padding-left: 1.2rem;
        }

        .file-requirements li {
            margin-bottom: 0.25rem;
            color: var(--text-secondary);
        }

        #uploader {
    border: 3px dashed var(--border);
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: rgba(40, 42, 54, 0.8); /* fundo escuro fixo */
    position: relative;
    overflow: hidden;
}

        #uploader::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
            transition: left 0.6s;
        }

        #uploader:hover::before {
            left: 100%;
        }

        #uploader:hover {
    border-color: #ff79c6; /* rosa neon no hover */
    background: rgba(40, 42, 54, 0.8); /* manter fundo escuro fixo */
    transform: translateY(-2px);
}

        #uploader.dragover {
            border-color: var(--primary-solid);
            background: rgba(102, 126, 234, 0.05);
            transform: scale(1.02);
        }

        #uploader.error {
            border-color: var(--error);
            background: rgba(229, 62, 62, 0.05);
        }

        .upload-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
            opacity: 0.6;
        }

        #uploader p {
            margin: 0;
            font-size: 1.2rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        #file-input {
            display: none;
        }

        #file-name {
            margin-top: 1rem;
            padding: 0.75rem 1rem;
            background: rgba(17, 153, 142, 0.1);
            border: 1px solid rgba(17, 153, 142, 0.2);
            border-radius: 8px;
            color: var(--success-solid);
            font-weight: 500;
            display: none;
        }

        #file-name.show {
            display: block;
            animation: slideDown 0.3s ease;
        }

        .file-preview {
            display: none;
            margin-top: 1rem;
            text-align: center;
        }

        .file-preview.show {
            display: block;
            animation: slideDown 0.3s ease;
        }

        .preview-image {
            max-width: 150px;
            max-height: 150px;
            border-radius: 8px;
            box-shadow: var(--shadow);
            margin-bottom: 0.5rem;
        }

        .preview-info {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 1rem 2rem;
            font-size: 1.1rem;
            font-weight: 600;
            border-radius: 12px;
            cursor: pointer;
            width: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.6s;
        }

        button:hover::before {
            left: 100%;
        }

        button:disabled {
            background: var(--secondary);
            cursor: not-allowed;
            transform: none;
        }

        button:not(:disabled):hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        button:not(:disabled):active {
            transform: translateY(0);
        }

        .processing-steps {
            display: none;
            margin: 2rem 0;
            padding: 1.5rem;
            background: rgba(255, 255, 255, 0.8);
            border-radius: 12px;
            border: 1px solid var(--border);
        }

        .processing-steps.show {
            display: block;
            animation: fadeIn 0.3s ease;
        }

        .processing-step {
            display: flex;
            align-items: center;
            margin-bottom: 1rem;
            padding: 0.5rem;
            border-radius: 8px;
            transition: var(--transition);
        }

        .processing-step.active {
            background: rgba(102, 126, 234, 0.1);
        }

        .processing-step.completed {
            background: rgba(17, 153, 142, 0.1);
        }

        .step-icon {
            margin-right: 1rem;
            font-size: 1.2rem;
        }

        .step-text {
            font-weight: 500;
        }

        #loader {
            display: none;
            margin: 3rem auto;
            width: 50px;
            height: 50px;
            position: relative;
        }

        #loader::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border: 3px solid rgba(102, 126, 234, 0.1);
            border-top: 3px solid var(--primary-solid);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .progress-bar {
            width: 100%;
            height: 6px;
            background: rgba(102, 126, 234, 0.1);
            border-radius: 3px;
            overflow: hidden;
            margin: 1rem 0;
            display: none;
        }

        .progress-fill {
            height: 100%;
            background: var(--primary);
            width: 0%;
            transition: width 0.3s ease;
        }

        #results {
            display: none;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid var(--border);
            animation: fadeIn 0.5s ease;
        }

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

        #results h2 {
            background: var(--success);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-size: 1.8rem;
            margin-bottom: 1rem;
        }

        .generated-files {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
            padding: 1.5rem;
            background: rgba(255, 255, 255, 0.5);
            border-radius: 12px;
            border: 1px solid var(--border);
        }

        .file-item {
            text-align: center;
            padding: 1rem;
            background: white;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }

        .file-icon {
            font-size: 2rem;
            margin-bottom: 0.5rem;
        }

        .file-item-name {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-primary);
        }

        .file-item-desc {
            font-size: 0.8rem;
            color: var(--text-secondary);
        }

        .code-container {
            position: relative;
            margin: 1.5rem 0;
        }

        .code-label {
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
        }

        #html-snippet {
            background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 1.5rem;
            position: relative;
            overflow-x: auto;
            font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        #copy-button {
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0.5rem 1rem;
            border-radius: 6px;
            cursor: pointer;
            width: auto;
            font-size: 0.8rem;
            transition: var(--transition);
        }

        #copy-button:hover {
            background: #5a6268;
            transform: translateY(-1px);
        }

        #copy-button.copied {
            background: var(--success-solid);
        }

        #download-link {
            display: block;
            margin-top: 2rem;
            background: var(--success);
            color: white;
            text-decoration: none;
            padding: 1.2rem 2rem;
            border-radius: 12px;
            text-align: center;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        #download-link::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.6s;
        }

        #download-link:hover::before {
            left: 100%;
        }

        #download-link:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        /* Footer */
        .footer {
            text-align: center;
            padding: 2rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
            max-width: 800px;
            width: 100%;
        }

        .footer-links {
            margin-bottom: 1rem;
        }

        .footer-links a {
            color: var(--primary-solid);
            text-decoration: none;
            margin: 0 1rem;
            transition: var(--transition);
        }

        .footer-links a:hover {
            text-decoration: underline;
        }

        /* Responsividade */
        @media (max-width: 768px) {
            body {
                padding: 0.5rem;
            }
            
            main {
                padding: 1.5rem;
                margin-bottom: 1rem;
            }
            
            h1 {
                font-size: 2rem;
            }
            
            .logo {
                font-size: 3rem;
            }
            
            #uploader {
    border: 3px dashed var(--border);
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: rgba(40, 42, 54, 0.8); /* fundo escuro fixo */
    position: relative;
    overflow: hidden;
}
            
            .upload-icon {
                font-size: 2.5rem;
            }

            .features {
                gap: 0.5rem;
            }

            .feature-badge {
                font-size: 0.8rem;
                padding: 0.4rem 0.8rem;
            }

            .generated-files {
                grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
                gap: 0.8rem;
                padding: 1rem;
            }
        }

        @media (max-width: 480px) {
            main {
                padding: 1rem;
            }
            
            h1 {
                font-size: 1.8rem;
            }
            
            .subtitle {
                font-size: 1rem;
            }
            
            input[type="text"], input[type="color"] {
                padding: 0.8rem;
            }
            
            button {
                padding: 0.8rem 1.5rem;
            }

            .features {
                flex-direction: column;
                align-items: center;
            }
        }

        /* Animações de entrada suaves */
        .animate-in {
            animation: slideInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        /* Toast notification */
        .toast {
            position: fixed;
            top: 20px;
            right: 20px;
            background: var(--success-solid);
            color: white;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            font-weight: 500;
            z-index: 1000;
            transform: translateX(100%);
            transition: transform 0.3s ease;
            box-shadow: var(--shadow);
        }

        .toast.show {
            transform: translateX(0);
        }

        .toast.error {
            background: var(--error);
        }

        .toast.warning {
            background: var(--warning);
        }

        /* Accessibility */
        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }

        /* Focus styles for accessibility */
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary-solid);
            outline-offset: 2px;
        }

.generated-files {
    background: rgba(68, 71, 90, 0.5);
    border: 1px solid var(--border);
}

.file-item {
    background: #282a36;
    color: var(--text-primary);
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
    transition: transform 0.2s ease;
}

.file-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

.file-icon {
    color: #bd93f9;
}

.file-item-name {
    color: #f1fa8c;
}

.file-item-desc {
    color: #8be9fd;
}


#html-snippet {
    background: #1e1f29;
    color: #f8f8f2;
    border: 1px solid var(--border);
}

#html-snippet code {
    color: #f8f8f2;
}

#copy-button {
    background: var(--secondary);
    color: white;
}

#copy-button:hover {
    background: #44475a;
    transform: translateY(-1px);
}


#download-link {
    background: var(--primary);
    color: white;
    text-decoration: none;
    padding: 1.2rem 2rem;
    border-radius: 12px;
    text-align: center;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: block;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

#download-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s;
}

#download-link:hover::before {
    left: 100%;
}

#download-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}