button {
    vertical-align: middle;
}

.btn {
    padding: 10px 20px;
    border: 2px solid transparent;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    text-transform: uppercase;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    letter-spacing: 1px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.btn-primary:hover:not(:disabled) {
    background-color: #0056b3;
    border-color: #0056b3;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
    border-color: #6c757d;
}

.btn-secondary:hover:not(:disabled) {
    background-color: #545b62;
    border-color: #545b62;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
}

.btn-outline:hover:not(:disabled) {
    background-color: var(--accent-color);
    color: white;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}