/* Button */
.btn {
    width: 100%;
    padding: .75rem 1rem;
    background: var(--accent);
    color: #000;
    font-weight: 700;
    font-size: 1rem;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: opacity .15s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
}

.btn:hover { opacity: .75; }
.btn:disabled { opacity: .4; cursor: not-allowed; }

.btn--ghost {
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text);
}