.btn{white-space:nowrap;-webkit-user-select:none;user-select:none;justify-content:center;align-items:center;gap:var(--spacing-2);cursor:pointer;color:#fff;box-shadow:var(--shadow-xs);border:none;text-decoration:none;display:inline-flex;position:relative;border-radius:var(--border-radius-md)!important;font-weight:var(--font-weight-medium)!important;transition:transform .15s cubic-bezier(.16,1,.3,1),background-color .15s,box-shadow .15s,border-color .15s!important}.btn:focus{outline:none;box-shadow:0 0 0 3px #2563eb4d}.btn:disabled{cursor:not-allowed;opacity:.6}.btn-full-width{width:100%}.btn-sm{padding:var(--spacing-1_5)var(--spacing-3);font-size:var(--font-size-sm);height:32px}.btn-md{padding:var(--spacing-2)var(--spacing-4);font-size:var(--font-size-base);height:40px}.btn-lg{padding:var(--spacing-2_5)var(--spacing-5);font-size:var(--font-size-lg);height:48px}.btn-xl{padding:var(--spacing-3)var(--spacing-6);font-size:var(--font-size-xl);height:56px}.btn-primary{background:var(--gradient-btn)!important;border:1px solid var(--primary-600)!important;box-shadow:0 1px 2px #00000014,0 0 0 1px var(--primary-500)!important}.btn-primary:hover:not(:disabled){color:var(--neutral-black);background:var(--bg-surface-hover)!important;border-color:var(--primary-700)!important;transform:translateY(-1px)!important;box-shadow:0 4px 12px #2563eb26!important}.btn-primary:active:not(:disabled){transform:translateY(0)!important;box-shadow:0 1px 2px #00000014!important}.btn-secondary{background:var(--bg-surface)!important;border:1px solid var(--border-color)!important}.btn-secondary:hover:not(:disabled){background:var(--bg-surface-hover)!important;border-color:var(--border-color-hover)!important;transform:translateY(-1px)!important}.btn-success{background:linear-gradient(180deg,var(--success-500)0%,var(--success-600)100%)!important;border:1px solid var(--success-600)!important;box-shadow:0 1px 2px #00000014,0 0 0 1px var(--success-500)!important}.btn-success:hover:not(:disabled){color:var(--neutral-black);background:var(--bg-surface-hover)!important;border-color:var(--success-700)!important;transform:translateY(-1px)!important;box-shadow:0 4px 12px #16a34a26!important}.btn-success:active:not(:disabled){transform:translateY(0)!important;box-shadow:0 1px 2px #00000014!important}.btn-error{background:var(--error-800)!important;border:1px solid var(--error-300)!important}.btn-error:hover:not(:disabled){background:var(--bg-surface-hover)!important;border-color:var(--error-600)!important;color:var(--error-700)!important;transform:translateY(-1px)!important}.btn-error:active:not(:disabled){transform:translateY(0)!important}.btn-warning{background:linear-gradient(180deg,var(--warning-400)0%,var(--warning-500)100%)!important;border:1px solid var(--warning-500)!important;color:var(--text-primary)!important;box-shadow:0 1px 2px #00000014,0 0 0 1px var(--warning-400)!important}.btn-warning:hover:not(:disabled){background:var(--bg-surface-hover)!important;border-color:var(--warning-600)!important;transform:translateY(-1px)!important;box-shadow:0 4px 12px #f59e0b26!important}.btn-warning:active:not(:disabled){transform:translateY(0)!important;box-shadow:0 1px 2px #00000014!important}.btn-outline{border:1px solid var(--border-color)!important;color:var(--text-primary)!important;background:0 0!important}.btn-outline:hover:not(:disabled){background:var(--bg-surface-hover)!important;border-color:var(--border-color-hover)!important;transform:translateY(-1px)!important}.btn-outline:active:not(:disabled){transform:translateY(0)!important}.btn-ghost{color:var(--text-secondary)!important;background:0 0!important}.btn-ghost:hover:not(:disabled){background:var(--bg-surface-hover)!important;color:var(--text-primary)!important}.btn-link{color:var(--primary-600)!important;box-shadow:none!important;background:0 0!important;border:1px solid #0000!important;text-decoration:underline!important}.btn-link:hover:not(:disabled){color:var(--primary-700)!important;text-decoration:none!important;transform:translateY(-1px)!important}.btn-link:active:not(:disabled){transform:translateY(0)!important}.btn-loading{pointer-events:none;position:relative}.btn-spinner{border:2px solid;border-right-color:#0000;border-radius:50%;width:16px;height:16px;animation:1s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.btn-content{align-items:center;gap:var(--spacing-2);display:flex}.btn-content-hidden{visibility:hidden}.btn-icon{justify-content:center;align-items:center;display:flex}.btn-icon-left{margin-right:var(--spacing-1)}.btn-icon-right{margin-left:var(--spacing-1)}@media (max-width:768px){.btn-lg{padding:var(--spacing-2)var(--spacing-4);font-size:var(--font-size-base);height:44px}.btn-xl{padding:var(--spacing-2_5)var(--spacing-5);font-size:var(--font-size-lg);height:52px}}