/* CSS Variables for light and dark themes */
:root {
    --background-color: #ffffff;
    --text-color: #333333;
    --container-bg: #f5f5f5;
    --border-color: #cccccc;
    --button-bg: #007bff;
    --button-text: #ffffff;
    --button-bg-hover: #0056b3;
    --status-error: #dc3545;
    --status-success: #28a745;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #1a1a1a;
        --text-color: #e0e0e0;
        --container-bg: #2a2a2a;
        --border-color: #444444;
        --button-bg: #1e90ff;
        --button-text: #ffffff;
        --button-bg-hover: #1470cc;
        --status-error: #ff5555;
        --status-success: #55ff55;
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: var(--container-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    max-width: 500px;
    width: 100%;
    border: 1px solid var(--border-color);
}

h1 {
    font-size: 24px;
    margin-bottom: 10px;
    text-align: center;
}

p {
    font-size: 14px;
    margin-bottom: 20px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    font-size: 16px;
    margin-bottom: 8px;
}

input[type="file"],
select {
    width: 100%;
    padding: 10px;
    font-size: 16px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: var(--background-color);
    color: var(--text-color);
    box-sizing: border-box;
}

button {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

button:not(:disabled):hover {
    background-color: var(--button-bg-hover);
}

.status {
    margin-top: 15px;
    font-size: 14px;
    text-align: center;
}

.status.error {
    color: var(--status-error);
}

.status.success {
    color: var(--status-success);
}