/* =========================
   Button – Primary action
========================= */
.btn {
    border: none;
    cursor: pointer;
    font: inherit;
    font-family: 'Nunito', 'Lexend Deca', sans-serif;
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding: 0.65rem 1.4rem;
    margin: 0;
    background-color: var(--color-primary);
    color: var(--color-on-primary);
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px rgba(74, 144, 217, 0.3);
    transition:
        background var(--transition-fast),
        transform var(--transition-fast),
        box-shadow var(--transition-fast);
}

.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    box-shadow: none;
}

.btn:not(:disabled):hover:not(:active) {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 16px rgba(74, 144, 217, 0.4);
}

.btn:not(:disabled):active {
    transform: translateY(0);
    box-shadow: none;
}

/* Secondary / outline variant */
.btn.btn--outline {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    box-shadow: none;
}

.btn.btn--outline:hover:not(:disabled) {
    background: var(--color-primary);
    color: var(--color-on-primary);
    transform: translateY(-2px);
    box-shadow: 0 5px 16px rgba(74, 144, 217, 0.3);
}