.ui-btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.65rem 1.25rem;border-radius:8px;font-weight:600;font-size:.875rem;font-family:inherit;cursor:pointer;transition:var(--transition-fast);border:none;text-decoration:none;white-space:nowrap;-webkit-user-select:none;-moz-user-select:none;user-select:none;position:relative;outline:none}.ui-btn:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.ui-btn--loading{pointer-events:none;cursor:wait}.ui-btn--primary{background:linear-gradient(135deg,var(--btn-primary-from),var(--btn-primary-to));color:#fff;box-shadow:0 4px 16px var(--primary-glow)}.ui-btn--primary:hover{box-shadow:0 8px 24px var(--primary-glow)}.ui-btn--secondary{background:var(--btn-secondary-bg);color:var(--btn-secondary-text);border:1px solid var(--surface-border)}.ui-btn--secondary:hover{background:var(--primary-soft);color:var(--primary);border-color:var(--primary)}.ui-btn--ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--surface-border);border-radius:8px;padding:.45rem .75rem}.ui-btn--ghost:hover{background:var(--surface);color:var(--text);border-color:var(--primary-soft)}.ui-btn__content{display:inline-flex;align-items:center;gap:inherit;transition:opacity .15s}.ui-btn__spinner{position:absolute;left:50%;top:50%;margin-left:-8px;margin-top:-8px;width:16px;height:16px;border:2px solid hsla(0,0%,100%,.3);border-top-color:#fff;border-radius:50%;opacity:0;pointer-events:none}.ui-btn--ghost .ui-btn__spinner,.ui-btn--secondary .ui-btn__spinner{border-color:var(--surface-border);border-top-color:var(--primary)}.ui-btn--loading .ui-btn__spinner{opacity:1;animation:ui-spin .6s linear infinite}.ui-btn--loading .ui-btn__content{opacity:0}@keyframes ui-spin{to{transform:rotate(1turn)}}