.btn{display:inline-block;padding:12px 24px;border:none;border-radius:var(--border-radius-lg);font-family:var(--font-family-base);font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);text-align:center;text-decoration:none;cursor:pointer;transition:all var(--transition-normal);box-shadow:var(--shadow-sm);-webkit-user-select:none;user-select:none;outline:0;line-height:1}.btn:focus{outline:2px solid var(--qk-accent-blue);outline-offset:2px}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none!important}.btn-primary{background:linear-gradient(135deg,var(--qk-accent-orange) 0,var(--orange-light) 100%);color:var(--white);border:2px solid transparent}.btn-primary:focus-visible:not(:disabled),.btn-primary:hover:not(:disabled){color:var(--white);transform:translateY(-1px);box-shadow:0 4px 12px rgb(230 151 90 / 30%)}.btn-secondary{background:var(--white);color:var(--qk-accent-blue);border:2px solid var(--qk-accent-blue)}.btn-secondary:hover:not(:disabled){background:var(--qk-accent-blue);color:var(--white);transform:translateY(-1px)}.btn-outline{background:0 0;color:var(--qk-accent-blue);border:2px solid var(--qk-accent-blue)}.btn-outline:hover:not(:disabled){background:var(--qk-accent-blue);color:var(--white)}.btn-success{background:var(--success);color:var(--white);border:2px solid var(--success)}.btn-success:hover:not(:disabled){background:#218838;border-color:#218838;transform:translateY(-1px)}.btn-danger{background:var(--danger);color:var(--white);border:2px solid var(--danger)}.btn-danger:hover:not(:disabled){background:#c82333;border-color:#c82333;transform:translateY(-1px)}.btn-warning{background:var(--warning);color:var(--dark-gray);border:2px solid var(--warning)}.btn-warning:hover:not(:disabled){background:#e0a800;border-color:#e0a800;transform:translateY(-1px)}.btn-sm{padding:8px 16px;font-size:var(--font-size-sm)}.btn-lg{padding:15px 30px;font-size:var(--font-size-lg)}.btn-xl{padding:18px 36px;font-size:var(--font-size-xl)}.btn-group{display:inline-flex;vertical-align:middle}.btn-group .btn{border-radius:0;margin-left:-1px}.btn-group .btn:first-child{border-radius:var(--border-radius-lg) 0 0 var(--border-radius-lg)}.btn-group .btn:last-child{border-radius:0 var(--border-radius-lg) var(--border-radius-lg) 0}.btn-group .btn:only-child{border-radius:var(--border-radius-lg)}.btn-block{display:block;width:100%}.btn-loading{position:relative;color:transparent!important}.btn-loading::after{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:20px;height:20px;border:2px solid;border-radius:50%;border-top-color:currentcolor;animation:.8s linear infinite btn-spin}body.light-mode .btn-loading::after,html[data-theme=light] .btn-loading::after{border-color:rgb(15 23 42 / 18%)}@keyframes btn-spin{to{transform:translate(-50%,-50%) rotate(360deg)}}.btn-icon{padding:12px;width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--border-radius-full)}.btn-icon.btn-sm{padding:8px;width:36px;height:36px}.btn-icon.btn-lg{padding:16px;width:52px;height:52px}.btn-link{background:0 0;border:none;color:var(--qk-accent-blue);text-decoration:underline;padding:0;font-weight:var(--font-weight-normal);box-shadow:none}.btn-link:hover:not(:disabled){color:var(--qk-accent-orange);transform:none}.btn-ghost{background:rgb(255 255 255 / 10%);color:var(--white);border:1px solid;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.btn-ghost:hover:not(:disabled){background:rgb(255 255 255 / 20%);transform:translateY(-1px)}.search-button{background-color:var(--qk-accent-orange);color:var(--white);border:none;padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--border-radius-md);cursor:pointer;font-size:var(--font-size-md);margin-left:var(--spacing-sm)}