/* Fonts and Basic Styles */
body {
    font-family: 'Nunito', sans-serif;
    background: linear-gradient(135deg, #74ebd5, #ACB6E5);
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    min-height: 100vh;
}

/* Header */
.header-bar {
    background-color: #295F98;
    width: 100%;
    padding: 20px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    color: white;
}

.header-bar h1 {
    margin: 0;
    font-size: 2rem;
}

/* Main Container */
.main-container {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 20px;
    padding: 40px 20px;
    flex-wrap: wrap;
    max-width: 1200px;
    width: 100%;
}

/* Cards */
.card {
    background-color: white;
    border-radius: 15px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    padding: 30px;
    width: 100%;
    max-width: 400px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
}

.card h2 {
    margin-bottom: 15px;
    font-size: 1.6rem;
    color: #333;
}

.card p {
    margin-bottom: 20px;
    font-size: 1rem;
    color: #555;
}

/* Custom File Upload */
.custom-file-upload {
    display: block;
    padding: 12px 25px;
    background-color: #f4f4f4;
    border: 2px dashed #007bff;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease, border-color 0.3s ease;
    color: #333;
}

.custom-file-upload:hover {
    background-color: #f0f8ff;
    border-color: #0056b3;
}

.custom-file-upload input[type="file"] {
    display: none;
}

.custom-file-upload span {
    font-size: 1rem;
    font-weight: 700;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 40px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-top: 20;
}

.btn:hover {
    background-color: #0056b3;
}

/* Error Message */
#errorMessage {
    color: red;
    font-weight: bold;
    text-align: center;
    margin-top: 15px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-container {
        flex-direction: column;
        align-items: center;
        padding: 20px;
    }

    .card {
        max-width: 90%;
        margin-bottom: 20px;
    }

    .header-bar h1 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .card {
        max-width: 100%;
    }

    .header-bar h1 {
        font-size: 1.6rem;
    }

    .btn {
        padding: 10px 30px;
        font-size: 1rem;
    }

    .custom-file-upload {
        padding: 10px 20px;
    }
}