.history-panel{position:fixed;top:calc(var(--chrome-top-height) + var(--safe-area-top));right:0;bottom:0;width:360px;background:var(--bg-elevated);border-left:1px solid var(--border);box-shadow:var(--shadow-md);z-index:95;display:flex;flex-direction:column;overflow:hidden}.history-panel:focus{outline:none}.history-panel-header{display:flex;align-items:center;gap:.5rem;padding:.5rem .75rem;border-bottom:1px solid var(--border);flex-shrink:0}.history-panel-title{font-size:.85rem;font-weight:600;color:var(--text);flex:1 1}.history-panel-btn{border:none;background:none;cursor:pointer;color:var(--text-muted);padding:.2rem .4rem;border-radius:3px;font-size:.85rem;line-height:1}.history-panel-btn:hover{background:var(--hover-bg);color:var(--text)}.history-panel-list{overflow-y:auto;flex:1 1;min-height:0;padding:.25rem 0}.history-panel-empty{padding:1rem .75rem;font-size:.85rem;color:var(--text-muted)}.history-entry{display:flex;align-items:center;gap:.5rem;width:100%;padding:.4rem .75rem;border:none;background:none;cursor:pointer;text-align:left;font-size:.85rem;color:var(--text)}.history-entry--active,.history-entry:hover{background:var(--hover-bg)}.history-entry:focus{outline:none}.history-entry:focus-visible{outline:2px solid var(--border-focus);outline-offset:-2px;background:var(--hover-bg)}.history-entry-badge{font-size:.7rem;padding:1px 5px;border-radius:3px;background:var(--bg-muted);color:var(--text-muted);flex-shrink:0}.history-entry-badge--search{background:#1e3a5f22;color:#4a90d9}.history-entry-badge--occurrence{background:#2a3a1a22;color:#7ab060}.history-entry-badge--grammar{background:#3a1e3a22;color:#b060b0}.history-entry-badge--restore{background:#3a2a1a22;color:#c08040}.history-entry-badge--omnibox{background:var(--bg-muted);color:var(--text-muted)}.history-entry-badge--practice{background:#1a2e3a22;color:#4a9ab0}.history-entry-badge--about{background:#2e1a3a22;color:#9a6ed0}.history-entry-badge--doc{background:#1a3a3222;color:#4ab09a}.history-entry-ref{flex:1 1;font-weight:500}.history-entry-time{font-size:.75rem;color:var(--text-muted);flex-shrink:0}.history-panel-footer{padding:.4rem .75rem;border-top:1px solid var(--border);flex-shrink:0}.history-clear-btn{border:1px solid var(--border);background:none;cursor:pointer;color:var(--text);font-size:.8rem;padding:.25rem .6rem;border-radius:4px}.history-clear-btn:hover{background:var(--error-bg);border-color:var(--error-border);color:var(--error-text)}@media (max-width:639px){.history-panel{top:0;right:0;width:100vw;max-width:100vw;max-height:100vh;border-radius:0;border:none;padding-top:var(--safe-area-top);padding-bottom:var(--safe-area-bottom)}.history-panel-close:before{content:"← "}.history-panel-close{font-size:.9rem}.history-panel-btn{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px}}