body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f7f9fb;
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: #fff;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.header-title {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.logo-container {
    display: flex;
    gap: 2rem;
    justify-content: center;
    align-items: center;
}

.logo-container img {
    height: 60px;
    object-fit: contain;
}

section {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
}

h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

p {
    font-size: 1rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.upload-form {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.custom-file-upload {
    background-color: #ff8800;
    color: #fff;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
}

.hidden-file-input {
    display: none;
}

#fileName {
    font-style: italic;
    color: #555;
}

.upload-button {
    background-color: #28a745;
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
}

.upload-button:hover {
    background-color: #218838;
}

ul {
    list-style: none;
    padding: 0;
    margin-top: 1.5rem;
    text-align: center;
}

li a {
    text-decoration: none;
    color: #007bff;
}

footer {
    padding: 1rem;
    background-color: #f1f1f1;
    text-align: center;
    font-size: 0.9rem;
}

footer a {
    color: #007bff;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}