/* ═══ Leaf Action Buttons ═══ */
.leaf-actions{position:absolute;right:.6rem;bottom:.6rem;display:flex;gap:.45rem;z-index:5}
.leaf-btn{width:34px;height:34px;border:none;cursor:pointer;padding:0;position:relative;display:flex;align-items:center;justify-content:center;border-radius:50%;background:var(--p0);transition:all var(--t)}
.leaf-btn:hover{transform:scale(1.12);box-shadow:0 3px 12px rgba(26,16,53,.15)}
.leaf-btn:active{transform:scale(.92)}
.leaf-btn svg{width:15px;height:15px;transition:all var(--t);flex-shrink:0}
/* Like */
.leaf-btn.like{background:rgba(107,63,160,.08)}
.leaf-btn.like svg{fill:none;stroke:var(--p4);stroke-width:2}
.leaf-btn.like:hover{background:rgba(107,63,160,.18)}
.leaf-btn.like:hover svg{stroke:var(--p6)}
.leaf-btn.like.active{background:var(--p6)}
.leaf-btn.like.active svg{fill:var(--w);stroke:var(--w)}
/* Comment */
.leaf-btn.comment{background:rgba(201,168,76,.08)}
.leaf-btn.comment svg{fill:none;stroke:#b8972e;stroke-width:2}
.leaf-btn.comment:hover{background:rgba(201,168,76,.18)}
.leaf-btn.comment:hover svg{stroke:var(--gold)}
.leaf-btn.comment.active{background:var(--gold)}
.leaf-btn.comment.active svg{fill:var(--w);stroke:var(--w)}
/* Quiz */
.leaf-btn.quiz{background:rgba(76,175,80,.08)}
.leaf-btn.quiz svg{fill:none;stroke:#4caf50;stroke-width:2}
.leaf-btn.quiz:hover{background:rgba(76,175,80,.18)}
.leaf-btn.quiz:hover svg{stroke:#388e3c}
.leaf-btn.quiz.active{background:#4caf50}
.leaf-btn.quiz.active svg{fill:var(--w);stroke:var(--w)}
/* Math */
.leaf-btn.math{background:rgba(21,101,192,.08)}
.leaf-btn.math svg{fill:none;stroke:#1565C0;stroke-width:1.5}
.leaf-btn.math svg{width:22px;height:22px}
.leaf-btn.math text{stroke:none;fill:#1565C0}
.leaf-btn.math:hover{background:rgba(21,101,192,.18)}
.leaf-btn.math:hover svg{stroke:#0D47A1}
.leaf-btn.math:hover text{fill:#0D47A1}
.leaf-btn.math.active{background:#1565C0}
.leaf-btn.math.active svg{fill:var(--w);stroke:var(--w)}
.leaf-btn.math.active text{fill:var(--w)}
/* Leaf tooltip */
.leaf-btn::after{content:attr(data-tip);position:absolute;bottom:calc(100% + 6px);left:50%;transform:translateX(-50%);font-size:.55rem;font-weight:600;font-family:'Outfit',sans-serif;white-space:nowrap;padding:.2rem .5rem;border-radius:5px;background:var(--p9);color:rgba(255,255,255,.92);opacity:0;pointer-events:none;transition:opacity .2s;letter-spacing:.02em}
.leaf-btn:hover::after{opacity:1}
/* ─── Leaf Popover ─── */
.leaf-popover{position:absolute;right:0;bottom:calc(100% + .5rem);width:300px;background:var(--w);border-radius:12px;box-shadow:var(--s3);border:1px solid var(--p2);z-index:50;padding:1rem;animation:lpFade .2s ease-out}
@keyframes lpFade{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}
.leaf-popover-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:.6rem}
.leaf-popover-title{font-family:'Lora',serif;font-size:.82rem;font-weight:600;color:var(--p8)}
.leaf-popover-close{width:22px;height:22px;border-radius:50%;border:none;background:var(--p1);color:var(--p7);font-size:.72rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--t)}
.leaf-popover-close:hover{background:var(--p6);color:var(--w)}
/* Comment popover */
.leaf-comment-area{width:100%;min-height:80px;padding:.5rem .7rem;border:1px solid var(--p2);border-radius:8px;font-family:'Outfit',sans-serif;font-size:.78rem;color:var(--p8);resize:vertical;outline:none;transition:border var(--t);line-height:1.6}
.leaf-comment-area:focus{border-color:var(--p5);box-shadow:0 0 0 2px rgba(107,63,160,.1)}
.leaf-comment-actions{display:flex;gap:.4rem;margin-top:.5rem;justify-content:flex-end}
.leaf-comment-btn{padding:.3rem .7rem;border-radius:50px;font-family:'Outfit';font-size:.68rem;font-weight:600;cursor:pointer;transition:all var(--t);border:none}
.leaf-comment-btn.save{background:var(--gold);color:var(--w)}
.leaf-comment-btn.save:hover{background:#b8972e}
.leaf-comment-btn.delete{background:var(--p1);color:var(--p7)}
.leaf-comment-btn.delete:hover{background:#f3d6d6;color:#c44}
/* Quiz popover */
.leaf-quiz-q{font-size:.82rem;font-weight:600;color:var(--p8);line-height:1.6;margin-bottom:.6rem}
.leaf-quiz-opts{display:flex;flex-direction:column;gap:.35rem}
.leaf-quiz-opt{padding:.45rem .7rem;border:1px solid var(--p2);border-radius:8px;font-family:'Outfit';font-size:.76rem;color:var(--p7);cursor:pointer;transition:all var(--t);background:var(--w);text-align:left}
.leaf-quiz-opt:hover{border-color:var(--p5);background:var(--p1)}
.leaf-quiz-opt.correct{background:rgba(76,175,80,.12);border-color:#4caf50;color:#2e7d32;font-weight:600}
.leaf-quiz-opt.wrong{background:rgba(204,68,68,.08);border-color:#c44;color:#c44}
.leaf-quiz-opt.disabled{pointer-events:none;opacity:.65}
.leaf-quiz-result{margin-top:.5rem;font-size:.74rem;font-weight:600;text-align:center;padding:.3rem;border-radius:6px}
.leaf-quiz-result.pass{background:rgba(76,175,80,.1);color:#2e7d32}
.leaf-quiz-result.fail{background:rgba(204,68,68,.08);color:#c44}
/* Try again button */
.leaf-quiz-retry{display:inline-block;margin-top:.5rem;padding:.35rem .9rem;border:none;border-radius:50px;font-family:'Outfit';font-size:.72rem;font-weight:600;cursor:pointer;background:var(--p6);color:var(--w);transition:all var(--t)}
.leaf-quiz-retry:hover{background:var(--p8)}
/* Backdrop overlay for mobile popovers */
.leaf-backdrop{display:none;position:fixed;inset:0;background:rgba(26,16,53,.35);z-index:49;animation:lpFade .2s ease-out}
.leaf-quiz-coming{text-align:center;padding:1.5rem .5rem;color:var(--p4);font-size:.78rem}
.leaf-quiz-coming svg{width:32px;height:32px;stroke:var(--p4);fill:none;stroke-width:1.5;display:block;margin:0 auto .5rem}
/* ─── Export / Import bar ─── */
.leaf-export-bar{display:flex;align-items:center;gap:.6rem;padding:.6rem 1rem;margin-bottom:1.2rem;background:linear-gradient(135deg,rgba(107,63,160,.05),rgba(201,168,76,.05));border:1px solid rgba(107,63,160,.12);border-radius:10px;flex-wrap:wrap}
.leaf-export-label{display:flex;align-items:center;gap:.35rem;font-size:.74rem;font-weight:600;color:var(--p7)}
.leaf-export-ico{width:15px;height:15px;stroke:var(--p5);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.leaf-export-stats{display:flex;gap:.5rem;flex:1}
.leaf-stat{font-size:.66rem;font-weight:600;padding:.15rem .5rem;border-radius:50px;background:var(--p1);color:var(--p6)}
.leaf-export-btn{padding:.3rem .65rem;border-radius:50px;font-family:'Outfit';font-size:.66rem;font-weight:600;cursor:pointer;transition:all var(--t);border:1px solid var(--p2);background:var(--w);color:var(--p7)}
.leaf-export-btn:hover{background:var(--p6);color:var(--w);border-color:var(--p6)}
/* Math filter toggle */
.leaf-filter-math{display:inline-flex;align-items:center;gap:.25rem;padding:.3rem .65rem;border-radius:50px;font-family:'Outfit';font-size:.66rem;font-weight:600;cursor:pointer;transition:all var(--t);border:1px solid rgba(21,101,192,.25);background:var(--w);color:#1565C0;margin-left:.15rem}
.leaf-filter-math:hover{background:rgba(21,101,192,.08);border-color:#1565C0}
.leaf-filter-math.active{background:#1565C0;color:var(--w);border-color:#1565C0}
.leaf-filter-math svg{flex-shrink:0}
/* Nerd Mode — Apple-style toggle */
.leaf-nerd-toggle{display:inline-flex;align-items:center;gap:.45rem;cursor:pointer;-webkit-user-select:none;user-select:none}
.leaf-nerd-check{position:absolute;opacity:0;width:0;height:0;pointer-events:none}
.leaf-nerd-track{position:relative;width:36px;height:20px;background:#ccc;border-radius:20px;transition:background .25s ease;flex-shrink:0}
.leaf-nerd-track::after{content:'';position:absolute;top:2px;left:2px;width:16px;height:16px;background:var(--w);border-radius:50%;box-shadow:0 1px 3px rgba(0,0,0,.2);transition:transform .25s ease}
.leaf-nerd-check:checked+.leaf-nerd-track{background:var(--p6)}
.leaf-nerd-check:checked+.leaf-nerd-track::after{transform:translateX(16px)}
.leaf-nerd-check:focus-visible+.leaf-nerd-track{outline:2px solid var(--p5);outline-offset:2px}
.leaf-nerd-label{font-family:'Outfit',sans-serif;font-size:.66rem;font-weight:600;color:var(--p6);transition:color var(--t)}
.leaf-nerd-check:checked~.leaf-nerd-label{color:var(--p8)}
/* ─── Leaf Responsive ─── */
@media(max-width:900px){
.leaf-actions{right:.4rem;bottom:.4rem;gap:.35rem}
.leaf-btn{width:30px;height:30px}
.leaf-btn svg{width:13px;height:13px}
.leaf-popover{width:260px}
}
@media(max-width:480px){
.leaf-actions{right:.3rem;bottom:.3rem;gap:.3rem}
.leaf-btn{width:30px;height:30px}
.leaf-btn svg{width:13px;height:13px}
.leaf-btn::after{display:none}
/* ─ Mobile bottom-sheet popover ─ */
.leaf-backdrop{display:block}
.leaf-popover{position:fixed;left:.5rem;right:.5rem;top:auto;bottom:3rem;width:auto;max-height:55vh;overflow-y:auto;border-radius:12px 12px 6px 6px;animation:lpSlideUp .25s ease-out}
.leaf-popover::before{content:'';display:block;width:32px;height:4px;background:var(--p3);border-radius:4px;margin:0 auto .5rem}
.leaf-export-bar{padding:.4rem .6rem;gap:.35rem}
.leaf-export-label{font-size:.66rem}
.leaf-export-stats{gap:.3rem}
.leaf-stat{font-size:.58rem;padding:.1rem .35rem}
}
@keyframes lpSlideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
/* ═══════════════════════════════════════════════════════════════
   Search Results Panel
   ═══════════════════════════════════════════════════════════════ */
.search-clear{position:absolute;right:.5rem;top:50%;transform:translateY(-50%);width:18px;height:18px;border:none;background:var(--p2);color:var(--p7);border-radius:50%;font-size:.7rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--t);line-height:1}
.search-clear:hover{background:var(--p6);color:var(--w)}
.search-results{position:absolute;top:calc(100% + .5rem);right:0;width:420px;max-height:70vh;background:var(--w);border-radius:12px;box-shadow:var(--s3);border:1px solid var(--p2);z-index:110;overflow:hidden;animation:srFade .2s ease-out}
@keyframes srFade{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}
.sr-header{display:flex;align-items:center;justify-content:space-between;padding:.6rem .8rem;border-bottom:1px solid var(--p1);background:var(--p0)}
.sr-count{font-size:.72rem;font-weight:600;color:var(--p7);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sr-nav{display:flex;align-items:center;gap:.3rem;flex-shrink:0}
.sr-nav-btn{width:24px;height:24px;border:1px solid var(--p2);border-radius:4px;background:var(--w);color:var(--p6);font-size:.7rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--t)}
.sr-nav-btn:hover{background:var(--p6);color:var(--w);border-color:var(--p6)}
.sr-pos{font-size:.65rem;font-weight:700;color:var(--p5);min-width:3.5rem;text-align:center}
.sr-list{overflow-y:auto;max-height:calc(70vh - 3rem);scrollbar-width:thin;scrollbar-color:var(--p2) transparent}
.sr-group{padding:.15rem 0}
.sr-group-title{font-size:.62rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--p5);padding:.35rem .8rem;background:var(--p0);position:sticky;top:0;z-index:1}
.sr-group-count{font-weight:400;color:var(--p4)}
.sr-item{display:block;padding:.5rem .8rem;cursor:pointer;transition:background var(--t);border-bottom:1px solid rgba(212,196,232,.2);border-left:3px solid transparent}
.sr-item:hover{background:var(--p1)}
.sr-item.active{background:var(--p1);border-left-color:var(--p6)}
.sr-item-meta{display:flex;align-items:center;gap:.3rem;margin-bottom:.15rem}
.sr-para{font-size:.58rem;font-weight:700;padding:.1rem .35rem;border-radius:50px;background:var(--p1);color:var(--p6)}
.sr-type-badge{font-size:.48rem;font-weight:700;padding:.08rem .3rem;border-radius:3px;letter-spacing:.03em;text-transform:uppercase}
.sr-type-badge.def{background:rgba(201,168,76,.12);color:#a07c1a}
.sr-type-badge.tax{background:rgba(76,168,105,.1);color:#2d8a4e}
.sr-type-badge.xref{background:rgba(107,63,160,.08);color:var(--p5)}
.sr-item-snippet{font-size:.74rem;line-height:1.6;color:var(--p7)}
.sr-item-snippet mark{background:rgba(201,168,76,.3);color:var(--p8);padding:.02rem .12rem;border-radius:2px;font-weight:600}
.sr-empty{text-align:center;padding:1.5rem;color:var(--p4);font-size:.78rem}
.sr-empty svg{width:28px;height:28px;stroke:var(--p3);fill:none;stroke-width:1.5;display:block;margin:0 auto .5rem}
.sr-export-btn{margin-left:.15rem;border-left:1px solid var(--p2);padding-left:.15rem}
.sr-export-btn svg{pointer-events:none}
.leaf-export-json{font-size:.58rem;color:var(--p5);cursor:pointer;text-decoration:underline;margin-left:.25rem;opacity:.7;transition:opacity var(--t)}
.leaf-export-json:hover{opacity:1;color:var(--p6)}
/* Document-level search highlights */
mark.search-mark{background:rgba(201,168,76,.3);color:var(--p8);padding:.05rem .15rem;border-radius:3px;scroll-margin-top:120px}
mark.search-mark.current{background:rgba(107,63,160,.2);outline:2px solid var(--p6);outline-offset:1px}
/* ─── Search Responsive ─── */
@media(max-width:900px){
.search-results{width:340px}
}
@media(max-width:480px){
.search-results{position:fixed;top:52px;left:0;right:0;width:auto;height:calc(100vh - 52px);max-height:none;border-radius:0;z-index:105;display:flex;flex-direction:column;overflow:hidden;animation:srSlide .2s ease-out}
@keyframes srSlide{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.sr-list{max-height:none;flex:1;min-height:0}
#searchBox{width:120px}
}