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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f5f7;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    max-width: 800px;
    margin: 2rem;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.description {
    text-align: center;
    color: #666;
    margin-bottom: 2rem;
}

.upload-container {
    margin: 2rem 0;
}

.drop-zone {
    border: 2px dashed #ccc;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.drop-zone:hover {
    border-color: #666;
    background: #f8f8f8;
}

.drop-zone.drag-over {
    border-color: #0066cc;
    background: #f0f7ff;
}

.file-input {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
}

.upload-icon {
    width: 50px;
    height: 50px;
    margin-bottom: 1rem;
    color: #666;
}

.progress-container {
    margin-top: 2rem;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #eee;
    border-radius: 4px;
    overflow: hidden;
    margin: 1rem 0;
}

.progress {
    width: 0%;
    height: 100%;
    background: #0066cc;
    transition: width 0.3s ease;
}

.progress-text {
    text-align: center;
    color: #666;
}

.error {
    color: #dc3545;
    text-align: center;
    margin-top: 1rem;
    padding: 0.5rem;
    border-radius: 4px;
    background: #ffe6e6;
}