* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f4f6f8;
    color: #222;
}

.container {
    max-width: 700px;
    margin: 80px auto;
    padding: 40px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    text-align: center;
}

h1 {
    margin-bottom: 10px;
}

.subtitle {
    color: #666;
    margin-bottom: 35px;
}

.upload-box {
    border: 2px dashed #b8c0c8;
    border-radius: 12px;
    padding: 40px 20px;
    margin-bottom: 20px;
}

.upload-box p:first-child {
    font-size: 40px;
    margin: 0 0 10px;
}

.button {
    display: inline-block;
    padding: 12px 22px;
    background: #1677ff;
    color: white;
    border-radius: 8px;
    cursor: pointer;
}

.button:hover {
    background: #0d5fd1;
}

#fileInfo {
    margin: 20px 0;
    font-weight: bold;
}

.upload-button {
    padding: 14px 25px;
    border: none;
    border-radius: 8px;
    background: #1677ff;
    color: white;
    font-weight: bold;
    cursor: pointer;
}

.upload-button:disabled {
    background: #b8c0c8;
    cursor: not-allowed;
}

.result {
    margin-top: 35px;
    padding: 25px;
    background: #eef9f0;
    border-radius: 10px;
}

.hidden {
    display: none;
}

.link-box {
    display: flex;
    gap: 8px;
}

.link-box input {
    flex: 1;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
}

.link-box button {
    padding: 12px 18px;
    border: none;
    border-radius: 6px;
    background: #333;
    color: white;
    cursor: pointer;
}

@media (max-width: 600px) {

    .container {
        margin: 20px;
        padding: 25px;
    }

    .link-box {
        flex-direction: column;
    }
}

.upload-box.dragover {
    border-color: #1677ff;
    background: #f0f6ff;
}