.app-checkbox{appearance:none;border:1px solid var(--color-border);background:var(--color-bg-panel);accent-color:var(--color-accent);cursor:pointer;transition:border-color .15s ease,background-color .15s ease,box-shadow .15s ease,filter .15s ease}.app-checkbox:hover:not(:disabled){border-color:var(--color-accent-40);box-shadow:0 0 0 1px var(--color-accent-25)}.app-checkbox:focus-visible{outline:2px solid var(--color-accent-40);outline-offset:2px}.app-checkbox:checked{background-color:var(--color-accent);border-color:var(--color-accent);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' fill='none'%3E%3Cpath stroke='%23090909' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' d='M2.5 6l2.5 2.5L9.5 3.5'/%3E%3C/svg%3E");background-size:10px 10px;background-position:50%;background-repeat:no-repeat}.app-checkbox:checked:hover:not(:disabled){filter:brightness(1.06)}.app-checkbox:disabled{cursor:not-allowed;opacity:.45}