:root {
            --dark-bg: #121212;
            --darker-bg: #0a0a0a;
            --card-bg: #1e1e1e;
            --accent: #bb86fc;
            --accent-secondary: #03dac6;
            --text-primary: #e4e4e4;
            --text-secondary: #a0a0a0;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: var(--dark-bg);
            color: var(--text-primary);
            line-height: 1.6;
            padding: 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        header {
            text-align: center;
            margin-bottom: 40px;
            padding: 20px;
            border-bottom: 1px solid #333;
        }
        
        h1 {
            color: var(--accent);
            margin-bottom: 10px;
            font-size: 2.5rem;
        }
        
        h2 {
            color: var(--accent-secondary);
            margin: 20px 0;
            font-size: 1.8rem;
        }
        
        .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        
        @media (max-width: 768px) {
            .container {
                grid-template-columns: 1fr;
            }
        }
        
        .section {
            background-color: var(--card-bg);
            border-radius: 10px;
            padding: 25px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
            margin-bottom: 30px;
        }
        
        .greeting-options {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 15px;
            margin: 20px 0;
        }
        
        .greeting-option {
            background: linear-gradient(145deg, #232323, #1a1a1a);
            border: 2px solid #333;
            border-radius: 8px;
            padding: 15px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .greeting-option:hover {
            border-color: var(--accent);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }
        
        .greeting-option.selected {
            border-color: var(--accent);
            background: linear-gradient(145deg, #2a1b3d, #1f1f1f);
            box-shadow: 0 0 15px rgba(187, 134, 252, 0.4);
        }
        
        .custom-input {
            margin-top: 15px;
            display: flex;
            gap: 10px;
        }
        
        input, textarea, button {
            padding: 12px;
            border-radius: 6px;
            border: 1px solid #333;
            background-color: #2c2c2c;
            color: var(--text-primary);
        }
        
        input:focus, textarea:focus {
            outline: none;
            border-color: var(--accent);
        }
        
        button {
            background-color: var(--accent);
            color: #000;
            border: none;
            cursor: pointer;
            font-weight: bold;
            transition: all 0.3s ease;
            
            border-radius: 8px;
        }
        
        button:hover {
            background-color: var(--accent-secondary);
            transform: translateY(-2px);
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        label {
            display: block;
            margin-bottom: 8px;
            color: var(--text-secondary);
        }
        
        textarea {
            width: 100%;
            min-height: 100px;
            resize: vertical;
        }
        
        .file-upload {
            position: relative;
            overflow: hidden;
            display: inline-block;
            width: 100%;
        }
        
        .file-upload-btn {
            background: #333;
            padding: 12px;
            border-radius: 6px;
            display: block;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .file-upload-btn:hover {
            background: #444;
        }
        
        .file-upload input[type=file] {
            position: absolute;
            left: 0;
            top: 0;
            opacity: 0;
            width: 100%;
            height: 100%;
            cursor: pointer;
        }
        
        .preview-card {
            background: linear-gradient(145deg, #1a1a1a, #252525);
            border-radius: 12px;
            padding: 25px;
            text-align: center;
            min-height: 400px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
        }
        
        .preview-image {
            max-width: 100%;
            max-height: 250px;
            border-radius: 8px;
            margin-bottom: 20px;
            border: 2px solid #333;
        }
        
        .preview-message {
            font-style: italic;
            margin: 15px 0;
            line-height: 1.5;
        }
        
        .preview-title {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 15px;
        }
        
        .generate-btn {
            padding: 15px 30px;
            font-size: 1.1rem;
            margin-top: 20px;
            width: 100%;
        }
        
        .hidden {
            display: none;
        }
        
        footer {
            text-align: center;
            margin-top: 50px;
            padding: 20px;
            border-top: 1px solid #333;
            color: var(--text-secondary);
        }