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

body {
    font-family: Arial, sans-serif;
    background: #f0f2f5;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 90%;
    max-width: 600px;
    margin: 20px auto;
}

.upload-box {
    background: white;
    border: 2px dashed #ccc;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
}

#fileInput {
    display: none;
}

.upload-label {
    display: inline-block;
    padding: 15px 30px;
    background: #2196F3;
    color: white;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.upload-label:hover {
    background: #1976D2;
}

.progress {
    margin: 20px 0;
    height: 20px;
    background: #eee;
    border-radius: 10px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: #4CAF50;
    transition: width 0.3s;
}

.hidden {
    display: none;
}

#preview {
    margin: 20px 0;
}

.preview-image {
    max-width: 100%;
    max-height: 200px;
    border-radius: 5px;
    display: none;
}

.file-preview {
    font-size: 50px;
    color: #666;
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

#fileName {
    font-size: 14px;
    color: #333;
    word-break: break-all;
}

#linkContainer {
    margin-top: 20px;
}

#downloadUrl {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.copy-button {
    padding: 10px 20px;
    background: #666;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.copy-button:hover {
    background: #555;
}