* {
    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;
    color: #333;
}

.hidden {
    display: none !important;
}

/* Auth Styles */
#auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.auth-card {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    text-align: center;
    max-width: 400px;
    width: 90%;
}

.auth-card h1 {
    margin-bottom: 1rem;
    color: #333;
}

.auth-card p {
    margin-bottom: 2rem;
    color: #666;
}

/* Main App Styles */
#main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    background: white;
    padding: 1.5rem 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

header h1 {
    color: #333;
}

/* Upload Zone */
.upload-zone {
    background: white;
    border: 3px dashed #ddd;
    border-radius: 12px;
    padding: 4rem 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    margin-bottom: 2rem;
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: #667eea;
    background: #f8f9ff;
}

.upload-content {
    max-width: 400px;
    margin: 0 auto;
}

.upload-icon {
    width: 64px;
    height: 64px;
    color: #667eea;
    margin-bottom: 1rem;
}

.upload-zone h3 {
    margin-bottom: 0.5rem;
    color: #333;
}

.upload-zone p {
    color: #666;
    margin-bottom: 2rem;
}

/* Progress Bar */
#upload-progress {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #f0f0f0;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    width: 0%;
    transition: width 0.3s ease;
}

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

/* File List */
.file-list {
    display: grid;
    gap: 1rem;
}

.file-item {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.file-icon {
    width: 40px;
    height: 40px;
    background: #667eea;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.file-details h4 {
    margin-bottom: 0.25rem;
    color: #333;
}

.file-details p {
    color: #666;
    font-size: 0.9rem;
}

.file-actions {
    display: flex;
    gap: 0.5rem;
}

.url-display {
    background: #f8f9fa;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-family: monospace;
    font-size: 0.9rem;
    color: #666;
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: transform 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
}

.btn-secondary {
    background: white;
    color: #667eea;
    border: 2px solid #667eea;
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    border-radius: 6px;
}

/* Responsive */
@media (max-width: 768px) {
    #main-container {
        padding: 1rem;
    }
    
    header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .file-item {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .file-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .url-display {
        max-width: 100%;
    }
}