.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0 16px;
    height: 38px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: .15s ease;
    white-space: nowrap;
}
.btn--sm { height: 32px; padding: 0 12px; font-size: 13px; }
.btn--primary { background: var(--primary); color: #fff; }
.btn--primary:hover { background: var(--primary-dark); }
.btn--ghost { background: #fff; border-color: var(--border); color: var(--text); }
.btn--ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn--portal { background: #0d9488; color: #fff; }
.btn--portal:hover { background: #0f766e; }
.btn--block { width: 100%; }