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

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

.container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
    max-width: 500px;
    width: 100%;
}

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

.subtitle {
    color: #666;
    text-align: center;
    margin-bottom: 30px;
    font-size: 14px;
}

.upload-area {
    border: 2px dashed #667eea;
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.upload-area:hover {
    border-color: #764ba2;
    background-color: #f8f9ff;
}

.upload-area.dragover {
    border-color: #764ba2;
    background-color: #f0f0ff;
    transform: scale(1.02);
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 10px;
}

.upload-text {
    color: #666;
    margin-bottom: 10px;
}

.file-info {
    color: #999;
    font-size: 12px;
}

input[type="file"] {
    display: none;
}

.preview-area {
    margin: 20px 0;
    text-align: center;
    display: none;
}

.preview-area img {
    max-width: 100%;
    max-height: 300px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.file-name {
    margin-top: 10px;
    color: #666;
    font-size: 14px;
    word-break: break-all;
}

.btn {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

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

.btn-upload:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
}

.btn-upload:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-clear {
    background: #f0f0f0;
    color: #666;
}

.btn-clear:hover {
    background: #e0e0e0;
}

.status {
    margin-top: 20px;
    padding: 15px;
    border-radius: 10px;
    text-align: center;
    display: none;
}

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

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

.status.loading {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 0 auto 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.result-url {
    margin-top: 10px;
    padding: 10px;
    background: white;
    border-radius: 5px;
    word-break: break-all;
    font-size: 12px;
}

.result-url a {
    color: #667eea;
    text-decoration: none;
}

.result-url a:hover {
    text-decoration: underline;
}