* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 20px;
    padding: 40px;
    max-width: 900px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 10px;
    font-size: 32px;
}

.subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
}

.upload-section {
    margin-bottom: 30px;
}

.upload-area {
    border: 3px dashed #667eea;
    border-radius: 15px;
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #f8f9ff;
}

.upload-area:hover {
    border-color: #764ba2;
    background: #f0f2ff;
}

.upload-area.dragover {
    border-color: #764ba2;
    background: #e8ebff;
    transform: scale(1.02);
}

.upload-icon {
    width: 80px;
    height: 80px;
    fill: #667eea;
    margin-bottom: 15px;
}

.upload-text {
    color: #666;
    font-size: 16px;
}

.preview-section {
    margin-top: 30px;
}

.preview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

@media (max-width: 768px) {
    .preview-grid {
        grid-template-columns: 1fr;
    }
}

.preview-item h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 18px;
}

.image-container {
    background: #f8f9ff;
    border: 2px solid #e8ebff;
    border-radius: 10px;
    padding: 20px;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.image-container img,
.image-container svg {
    max-width: 100%;
    max-height: 300px;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

/* Ensure SVG elements are properly styled */
svg {
    background: transparent !important;
}

/* Add a background pattern to help see transparent SVGs */
.image-container::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(45deg, #f0f0f0 25%, transparent 25%),
        linear-gradient(-45deg, #f0f0f0 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #f0f0f0 75%),
        linear-gradient(-45deg, transparent 75%, #f0f0f0 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    opacity: 0.5;
    pointer-events: none;
}

.options-section {
    background: #f8f9ff;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.option-group {
    margin-bottom: 15px;
}

.option-group label {
    display: block;
    color: #333;
    margin-bottom: 8px;
    font-weight: 500;
}

.option-group input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: #ddd;
    outline: none;
    -webkit-appearance: none;
}

.option-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #667eea;
    cursor: pointer;
}

.option-group input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #667eea;
    cursor: pointer;
    border: none;
}

.download-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-bottom: 20px;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #fff;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-secondary:hover {
    background: #f8f9ff;
    transform: translateY(-2px);
}

.progress {
    height: 4px;
    background: #e8ebff;
    border-radius: 2px;
    overflow: hidden;
    margin-top: 20px;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    width: 0%;
    transition: width 0.3s ease;
}

.error-message {
    background: #fee;
    border: 1px solid #fcc;
    border-radius: 8px;
    padding: 15px;
    margin: 20px 0;
    color: #c33;
    display: none;
}

.error-message.show {
    display: block;
    animation: slideIn 0.3s ease;
}

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