body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #4a5568;
    text-align: center;
    margin-bottom: 30px;
    font-size: 2.5em;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.archive-link-container {
    text-align: center;
    margin-bottom: 25px;
}

.archive-link {
    display: inline-block;
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    padding: 12px 25px;
    border-radius: 40px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 8px 16px rgba(16, 185, 129, 0.3);
}

.archive-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(16, 185, 129, 0.4);
    color: white;
    text-decoration: none;
}

.upload-section {
    padding: 30px;
    text-align: center;
}

.upload-section:hover {
    border-color: #667eea;
    background: linear-gradient(145deg, #edf2f7, #e2e8f0);
    transform: translateY(-2px);
}

.file-input {
    display: none;
}

.file-label {
    display: inline-block;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 12px 25px;
    border-radius: 40px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 8px 16px rgba(102, 126, 234, 0.3);
}

.file-label:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(102, 126, 234, 0.4);
}

.info-section {
    background: linear-gradient(145deg, #f0f9ff, #e0f2fe);
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 30px;
    border-left: 5px solid #0ea5e9;
}

.bitmap-container {
    text-align: center;
    margin-top: 30px;
}

img {
    width: 320px;
    height: auto;
}

.bmp-image {
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    margin: 15px 0;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    max-width: 80%;
    height: auto;
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
}

.file-info {
    background: linear-gradient(145deg, #fef5e7, #fed7aa);
    padding: 10px 15px;
    border-radius: 8px;
    margin-top: 15px;
    border-left: 4px solid #f59e0b;
    font-size: 14px;
}

.file-info h3 {
    margin: 0 0 8px 0;
    color: #92400e;
    font-size: 16px;
}

.file-info p {
    margin: 4px 0;
}

.error {
    background: linear-gradient(145deg, #fef2f2, #fecaca);
    color: #dc2626;
    padding: 15px;
    border-radius: 10px;
    margin-top: 20px;
    border-left: 5px solid #dc2626;
}