/* assets/style.css */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px;
    text-align: center;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
}

main {
    padding: 40px;
}

.upload-area {
    border: 3px dashed #667eea;
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.upload-area:hover {
    border-color: #764ba2;
    background: #f1f3f5;
}

.upload-area.drag-over {
    border-color: #28a745;
    background: #d4edda;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.browse-link {
    color: #667eea;
    cursor: pointer;
    text-decoration: underline;
}

.options {
    margin: 30px 0;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
}

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

.option-group label {
    display: inline-block;
    width: 180px;
    font-weight: 600;
}

.option-group select,
.option-group input[type="password"] {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    width: 200px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.alert {
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.share-link {
    width: 70%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: monospace;
}

#uploadProgress {
    margin-top: 20px;
    text-align: center;
}

progress {
    width: 100%;
    height: 30px;
}

.features {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.features ul {
    list-style: none;
    margin-top: 15px;
}

.features li {
    padding: 8px 0;
    font-size: 14px;
    color: #666;
}

.password-form {
    padding: 40px;
    text-align: center;
}

.password-form input[type="password"] {
    width: 300px;
    padding: 12px;
    margin: 20px 0;
    font-size: 16px;
}

@media (max-width: 768px) {
    .container {
        margin: 10px;
    }
    
    header {
        padding: 20px;
    }
    
    main {
        padding: 20px;
    }
    
    .option-group label {
        width: 100%;
        margin-bottom: 5px;
    }
    
    .share-link {
        width: 100%;
    }
}