body {
    background-color: #000000;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #ffffff;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

/* Container now has white background */
.container {
    text-align: center;
    background-color: #ffffff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(255, 0, 0, 0.3);
    width: 400px;
    color: #000000; /* Text inside container is black */
}

/* Logo stays above the white card */
.logo {
    width: 140px;
    margin-bottom: 20px;
}

/* Headline in red */
h1 {
    color: #ff0000;
    margin-bottom: 30px;
    font-size: 1.8em;
}

/* File input styling */
form input[type="file"] {
    margin-bottom: 20px;
    color: #000000;
    background-color: #f5f5f5;
    border: 1px solid #ccc;
    padding: 8px;
    border-radius: 4px;
}

/* Submit button in red */
form input[type="submit"] {
    background-color: #ff0000;
    border: none;
    padding: 10px 25px;
    color: white;
    font-weight: bold;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

form input[type="submit"]:hover {
    background-color: #cc0000;
}

.loader {
    border: 6px solid #f3f3f3;
    border-top: 6px solid #ff0000;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

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

.owner-label {
    margin-bottom: 10px;
    font-size: 1em;
    color: #ff0000;
}

/* Messages below form */
.message {
    margin-top: 25px;
    padding: 15px;
    border-radius: 6px;
    font-size: 0.95em;
}

.success {
    background-color: #e6ffed;
    color: #006633;
    border: 1px solid #00cc66;
}

.error {
    background-color: #ffe6e6;
    color: #990000;
    border: 1px solid #ff3333;
}

/* Link styling */
a {
    color: #ff0000;
    text-decoration: underline;
}

a:hover {
    color: #cc0000;
}

.drop-zone {
    background-color: #ffffff;
    color: #000000;
    border: 2px dashed #ff0000;
    border-radius: 8px;
    padding: 30px;
    cursor: pointer;
    margin-bottom: 20px;
    transition: background-color 0.3s ease;
}

.drop-zone.dragover {
    background-color: #ffe6e6;
}

.drop-zone p {
    margin: 0;
    font-size: 1em;
}

.drop-zone span {
    color: #ff0000;
    font-weight: bold;
}

.checklist {
    margin-top: 20px;
    text-align: left;
    background-color: #f9f9f9;
    color: #000000;
    padding: 15px;
    border-radius: 6px;
    border-left: 4px solid #ff0000;
}

.checklist h3 {
    margin-top: 0;
    color: #ff0000;
    font-size: 1.1em;
}

.checklist ul {
    list-style: none;
    padding-left: 0;
    margin: 10px 0 0 0;
}

.checklist li {
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
}

.checklist li::before {
    content: "✔️";
    position: absolute;
    left: 0;
    color: #00aa00;
}