:root {
            --bg-color: #121212;
            --card-bg: #1e1e1e;
            --text-color: #e0e0e0;
            --accent-color: #bb86fc;
            --secondary-color: #6592fb;
            --border-color: #333;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: var(--bg-color);
            color: var(--text-color);
            padding: 20px;
            line-height: 1.6;
        }

        .container {
            max-width: 800px;
            margin: 0 auto;
        }

        header {
            text-align: center;
            margin-bottom: 30px;
            padding: 20px;
            border-bottom: 1px solid var(--border-color);
        }

        h1 {
            color: var(--accent-color);
            font-size: 2.5rem;
            margin-bottom: 10px;
        }

        .subtitle {
            color: var(--secondary-color);
            font-size: 1.1rem;
        }

        .message-card {
            background-color: var(--card-bg);
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 20px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
            border-left: 4px solid var(--accent-color);
            position: relative;
        }

        .message-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            color: var(--accent-color);
            font-size: 0.9rem;
        }

        .message-content {
            margin-bottom: 10px;
        }

        .phrase-block {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px dashed var(--border-color);
        }

        .phrase-block:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }

        .english-phrase {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 5px;
            padding: 8px 10px;
            background-color: rgba(187, 134, 252, 0.1);
            border-radius: 4px;
        }

        .russian-phrase {
            padding: 8px 10px;
            color: #a0a0a0;
            font-style: italic;
        }

        .copy-btn {
            background-color: var(--accent-color);
            color: #000;
            border: none;
            border-radius: 4px;
            padding: 4px 8px;
            font-size: 0.8rem;
            cursor: pointer;
            transition: all 0.2s;
            margin-left: 10px;
        }

        .copy-btn:hover {
            background-color: var(--secondary-color);
            transform: translateY(-1px);
        }

        .copy-btn:active {
            transform: translateY(0);
        }

        .hidden-content {
            display: none;
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px dashed var(--border-color);
        }

        .toggle-btn {
            background-color: var(--secondary-color);
            color: #000;
            border: none;
            border-radius: 4px;
            padding: 5px 10px;
            font-size: 0.8rem;
            cursor: pointer;
            display: block;
            margin: 10px auto 0;
        }

        footer {
            text-align: center;
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            color: #666;
            font-size: 0.9rem;
        }

        @media (max-width: 600px) {
            body {
                padding: 10px;
            }
            
            h1 {
                font-size: 1.8rem;
            }
            
            .message-card {
                padding: 15px;
            }
        }

        .loading-image {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--bg-color);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
            opacity: 1;
            transition: opacity 1.5s ease-in-out;
        }

        .loading-image img {
            max-width: 50%;
            max-height: 50%;
            object-fit: contain;
        }

        .loading-image.fade-out {
            opacity: 0;
        }