body {
    font-family: system-ui, sans-serif;
    background: #121212;
    color: #eee;
    margin: 0;
    padding: 2rem;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

h1 { color: #0af; }

input[type="file"] {
    display: block;
    margin: 2rem auto;
    padding: 1rem;
    background: #333;
    color: white;
    border-radius: 8px;
}

button {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    background: #0af;
    color: black;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

button:disabled { background: #555; cursor: not-allowed; }

progress { width: 100%; height: 20px; margin: 1rem 0; }

#shareLink {
    width: 80%;
    padding: 1rem;
    margin: 1rem 0;
    background: #333;
    color: white;
    border: none;
    text-align: center;
}

.hidden { display: none; }
.error { color: #f66; margin: 1rem; }