html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.container {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    width: 90%;
    max-width: 500px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: 20px;
    min-height: 60vh;
    justify-content: center;
}

h2 {
    text-align: center;
    margin: 0 0 20px 0;
}

a {
    color: #007bff;
    text-decoration: none;
    font-weight: 600;
}

a:hover {
    text-decoration: underline;
}

input[type="file"] {
    padding: 12px 0;
}

button {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    background-color: #007bff;
    border: none;
    color: white;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #0056b3;
}

.success {
    color: green;
    font-weight: bold;
    text-align: center;
}

.btn {
    background-color: green;
    color: white;
    padding: 10px 0;
    border-radius: 5px;
    text-align: center;
    text-decoration: none;
    display: block;
    margin: 0 auto;
    max-width: 150px;
}

p {
    text-align: center;
}

p a {
    margin-left: 10px;
    font-weight: 600;
}