:root{--shadow-sm:0 1px 3px rgba(0,0,0,0.1);--shadow-md:0 4px 6px rgba(0,0,0,0.1);--shadow-lg:0 10px 15px rgba(0,0,0,0.1);--spacing-xs:0.25rem;--spacing-sm:0.5rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem;--spacing-2xl:3rem;--spacing-3xl:4rem;--spacing-4xl:6rem;--spacing-5xl:8rem;--border-radius-sm:4px;--border-radius-md:8px;--border-radius-lg:12px;--border-radius-full:9999px;--transition-fast:150ms ease-in-out;--transition-normal:250ms ease-in-out;--transition-slow:400ms ease-in-out}.snackbar{visibility:hidden;min-width:250px;background-color:var(--color-background-dark);color:var(--color-text-on-primary);text-align:center;border-radius:4px;padding:16px;position:fixed;z-index:1000;top:68px;right:20px;left:auto;bottom:auto;display:flex;justify-content:space-between;align-items:center;opacity:0;transition:opacity .3s,transform .3s;transform:translateX(100px);box-shadow:0 4px 8px rgba(0,0,0,.2)}.snackbar.show{visibility:visible;opacity:1;transform:translateX(0)}.snackbar .closeButton{background:none;border:none;color:var(--color-text-on-primary);font-size:20px;cursor:pointer;padding:0 8px;margin-left:16px;opacity:.8;transition:opacity .2s}.snackbar .closeButton:hover{opacity:1}.snackbar .message{flex:1;text-align:left;padding-right:8px}.snackbar.success{background-color:var(--color-success)}.snackbar.error{background-color:var(--color-error)}.snackbar.warning{background-color:var(--color-warning)}.snackbar.info{background-color:var(--color-info)}@media(max-width:600px){.snackbar{width:90%;top:auto;right:auto;bottom:30px;left:50%;transform:translateX(-50%) translateY(100px);padding:12px;font-size:14px}.snackbar.show{transform:translateX(-50%) translateY(0)}.snackbar .closeButton{font-size:18px}}