.ui-btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2, 8px);font-family:var(--font-body, "IBM Plex Sans", sans-serif);font-weight:600;text-decoration:none;text-align:center;white-space:nowrap;border:2px solid transparent;border-radius:var(--radius-md, 8px);cursor:pointer;position:relative;line-height:1.2;transition:transform .3s var(--ease-premium, cubic-bezier(.16, 1, .3, 1)),box-shadow .3s var(--ease-premium, cubic-bezier(.16, 1, .3, 1)),background .3s var(--ease-premium, cubic-bezier(.16, 1, .3, 1)),color .3s var(--ease-premium, cubic-bezier(.16, 1, .3, 1)),border-color .3s var(--ease-premium, cubic-bezier(.16, 1, .3, 1)),filter .3s var(--ease-premium, cubic-bezier(.16, 1, .3, 1))}.ui-btn--full{width:100%}.ui-btn--sm{padding:.5rem 1rem;font-size:.8125rem;letter-spacing:.02em;min-height:36px}.ui-btn--md{padding:.75rem 1.5rem;font-size:.875rem;letter-spacing:.02em;min-height:44px}.ui-btn--lg{padding:1rem 2rem;font-size:1rem;letter-spacing:.03em;min-height:52px}.ui-btn--primary{background:linear-gradient(135deg,var(--color-primary, #00393f) 0%,var(--color-primary-dark, #002a2f) 100%);color:var(--text-inverse, #ffffff);box-shadow:0 2px 8px rgba(var(--color-primary-rgb, 0, 57, 63),.25)}.ui-btn--gold{background:linear-gradient(135deg,var(--color-accent, #5c1a1f) 0%,var(--color-accent-dark, #4d161b) 100%);background-size:200% 200%;color:var(--text-inverse, #ffffff);box-shadow:0 2px 8px rgba(var(--color-accent-rgb),.3);animation:ui-btn-gold-shimmer 8s ease infinite}@keyframes ui-btn-gold-shimmer{0%,to{background-position:0% 50%}50%{background-position:100% 50%}}.ui-btn--secondary{background:rgba(var(--color-primary-rgb, 0, 57, 63),.04);color:var(--color-primary, #00393f);border-color:rgba(var(--color-primary-rgb, 0, 57, 63),.2);box-shadow:0 2px 8px rgba(var(--color-primary-rgb, 0, 57, 63),.05)}.ui-btn--ghost{background:transparent;color:var(--text-body, #475569);border-color:transparent}@media(min-width:768px){.ui-btn--primary:not(:disabled):not([aria-disabled=true]):hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 8px 24px rgba(var(--color-primary-rgb, 0, 57, 63),.3)}.ui-btn--gold:not(:disabled):not([aria-disabled=true]):hover{transform:translateY(-2px) scale(1.01);filter:brightness(1.08);box-shadow:0 10px 28px rgba(var(--color-accent-rgb),.4)}.ui-btn--secondary:not(:disabled):not([aria-disabled=true]):hover{transform:translateY(-2px);background:rgba(var(--color-primary-rgb, 0, 57, 63),.08);border-color:rgba(var(--color-primary-rgb, 0, 57, 63),.4);box-shadow:0 6px 18px rgba(var(--color-primary-rgb, 0, 57, 63),.12)}.ui-btn--ghost:not(:disabled):not([aria-disabled=true]):hover{background:rgba(var(--color-primary-rgb, 0, 57, 63),.06);color:var(--color-primary, #00393f)}}.ui-btn:active:not(:disabled):not([aria-disabled=true]){transform:translateY(0) scale(.99);transition-duration:.1s}.ui-btn:disabled,.ui-btn[aria-disabled=true]{opacity:.5;cursor:not-allowed;pointer-events:none;filter:grayscale(.2)}.ui-btn--loading .ui-btn__content{opacity:.85}.ui-btn__spinner{display:inline-block;width:14px;height:14px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:ui-btn-spin .8s linear infinite;pointer-events:none}@keyframes ui-btn-spin{to{transform:rotate(360deg)}}.ui-btn__external-icon{flex-shrink:0;opacity:.85}.ui-btn:focus-visible{outline:2px solid var(--color-accent, #5c1a1f);outline-offset:2px;box-shadow:0 0 0 4px rgba(var(--color-accent-rgb),.15)}@media(prefers-reduced-motion:reduce){.ui-btn{transition:none}.ui-btn--gold{animation:none}.ui-btn:hover,.ui-btn:active{transform:none}.ui-btn__spinner{animation-duration:1.6s}}@media(prefers-contrast:more){.ui-btn{border-color:currentColor}}