.btn {
    display: inline-block;
    padding: var(--btn-padding);
    font-weight: var(--btn-font-weight);
    font-size: 1rem;
    text-decoration: none;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
    background-color: var(--btn-primary-bg);
    color: var(--btn-primary-color);
}

.btn-secondary {
    background-color: var(--btn-secondary-bg);
    color: var(--btn-secondary-color);
}

.btn:hover,
.btn:focus {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
    text-decoration: none;
}

.btn:focus {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}