body {
    background-color: #f5f5f5;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px 0;
    margin: 0;
}

.card {
    border: none;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.card-header {
    padding: 1.5rem;
    border-bottom: none;
    background-color: #800020 !important; /* Maroon */
}

.card-body {
    padding: 2rem;
}

.download-btn {
    min-width: 220px;
    transition: all 0.3s ease;
    border: none;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    transform: translateY(0);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.download-btn:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.download-btn:disabled {
    opacity: 0.6;
    transform: none !important;
    box-shadow: none !important;
    cursor: not-allowed;
}

/* Windows button specific */
#windowsBtn {
    background: linear-gradient(135deg, #0078d7 0%, #106ebe 100%);
    border: none;
}

#windowsBtn:hover:not(:disabled) {
    background: linear-gradient(135deg, #106ebe 0%, #0078d7 100%);
}

/* Mac button specific */
#macBtn {
    background: linear-gradient(135deg, #000000 0%, #333333 100%);
    border: none;
}

#macBtn:hover:not(:disabled) {
    background: linear-gradient(135deg, #333333 0%, #000000 100%);
}

/* Button content */
.download-btn .bi {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.download-btn span {
    font-weight: 600;
    font-size: 1.1rem;
}

.download-btn small {
    font-size: 0.8rem;
    opacity: 0.8;
    font-weight: 300;
}

.btn {
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: #800020; /* Maroon */
    border-color: #800020;
}

.btn-primary:hover {
    background-color: #660019; /* Darker maroon */
    border-color: #4d0012;
}

.btn-dark {
    background-color: #000000; /* Pure black */
    border-color: #000000;
}

.btn-dark:hover {
    background-color: #333333; /* Slightly lighter black on hover */
    border-color: #262626;
}

.form-control:focus {
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: #dc3545;
}

.was-validated .form-control:invalid ~ .invalid-feedback,
.was-validated .form-check-input:invalid ~ .invalid-feedback {
    display: block;
}

/* Logo styles */
.logo-container {
    text-align: center;
    margin: 0 auto 2.5rem;
    max-width: 280px;
    padding: 0 15px;
}

.logo-image {
    max-width: 100%;
    height: auto;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.logo-image:hover {
    transform: scale(1.03);
    opacity: 0.95;
}

/* Form container */
.form-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Modal styles */
.modal-content {
    border: none;
    border-radius: 10px;
}

.modal-header {
    border-bottom: 1px solid #dee2e6;
}

.modal-footer {
    border-top: 1px solid #dee2e6;
}

/* Toast styles */
.toast {
    border: none;
    border-radius: 8px;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.toast-header {
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .card-body {
        padding: 1.5rem;
    }
    
    .btn {
        width: 100%;
    }
}