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

body {
    background: #0f172a;
    color: white;
    font-family: Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    width: 100%;
    padding: 20px;
}

.card {
    max-width: 500px;
    margin: auto;
    background: #1e293b;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
}

h1 {
    margin-bottom: 10px;
}

.subtitle {
    color: #cbd5e1;
    margin-bottom: 25px;
}

input[type="file"] {
    width: 100%;
    padding: 12px;
    background: #334155;
    color: white;
    border-radius: 8px;
    border: none;
}

button {
    margin-top: 20px;
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 8px;
    background: #3b82f6;
    color: white;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    opacity: 0.9;
}

#progressContainer {
    width: 100%;
    height: 10px;
    background: #334155;
    border-radius: 10px;
    margin-top: 20px;
    overflow: hidden;
}

#progressBar {
    width: 0%;
    height: 100%;
    background: #22c55e;
}

#status {
    margin-top: 15px;
}

#downloadBtn {
    display: none;
    margin-top: 20px;
    background: #22c55e;
    color: white;
    text-decoration: none;
    padding: 12px 20px;
    border-radius: 8px;
    display: inline-block;
}