/* ===== CSS Styles for Infinite Wall ===== */

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
    --bg:#f6f2ed;--surface:#fff;--surface2:#faf8f5;
    --accent:#9c7c4e;--accent2:#b8924e;--accentbg:rgba(156,124,78,0.08);
    --ink:#2d2a26;--ink2:#6b6560;--ink3:#a09a92;
    --line:#e8e2da;--line2:#f0ebe4;
    --sh1:0 2px 8px rgba(19, 18, 17, 0.2);
    --sh2:0 4px 16px rgba(19, 18, 17, 0.3);
    --sh3:0 8px 32px rgba(45,42,38,0.25);
    --sh4:0 16px 48px rgba(45,42,38,0.30);
    --sh5:0 0 20px rgba(240, 191, 121, 0.4), 0 0 40px rgba(242, 155, 136, 0.59);
    --grid:#ddd7cf;--r:10px;--r2:14px;
    --fd:'LXGW WenKai','Noto Sans SC','Source Han Sans CN',sans-serif;
    --fm:'LXGW WenKai','Noto Sans SC','Source Han Sans CN',sans-serif;
    --fc:'Noto Serif SC','Songti SC','SimSun',serif;
    --ease:0.2s cubic-bezier(0.4,0,0.2,1);
}
html,body{width:100%;height:100%;overflow:hidden;font-family:'LXGW WenKai','Noto Sans SC','Source Han Sans CN',sans-serif;font-size:14px;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}

/* ===== Viewport & Canvas ===== */
#viewport{position:fixed;inset:0;overflow:hidden;cursor:grab;z-index:0}
#viewport.grabbing{cursor:grabbing}
#canvas{position:absolute;transform-origin:0 0;will-change:transform;background-image:radial-gradient(circle,var(--grid) 1px,transparent 1px);background-size:24px 24px}
#viewport::after{content:'';position:fixed;inset:0;background:repeating-conic-gradient(rgba(0,0,0,.01) 0% 25%,transparent 0% 50%);background-size:3px 3px;pointer-events:none;z-index:1}

/* ===== Empty State ===== */
#empty{position:fixed;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;pointer-events:none;z-index:1;opacity:0;transition:opacity .6s}
#empty.show{opacity:1}
#empty h1{font-family:var(--fd),var(--fc);font-size:56px;font-weight:300;color:var(--ink3);letter-spacing:.08em;margin-bottom:10px}
#empty h1 .hi{color:var(--accent);opacity:.65}
#empty p{font-size:13px;color:var(--ink3);opacity:.55}

/* ===== Toolbar ===== */
#toolbar{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:2px;padding:6px 8px;background:rgba(255,255,255,0.72);backdrop-filter:blur(20px) saturate(1.2);-webkit-backdrop-filter:blur(20px) saturate(1.2);border:1px solid rgba(232,226,218,0.6);border-radius:16px;box-shadow:var(--sh3);z-index:100;animation:fadeUp .5s ease .2s both}
.tb{display:flex;align-items:center;gap:7px;padding:9px 15px;border:none;border-radius:10px;background:0 0;color:var(--ink2);font-family:'LXGW WenKai','Noto Sans SC','Source Han Sans CN',sans-serif;font-size:16px;cursor:pointer;transition:all var(--ease);white-space:nowrap}
.tb:hover{background:var(--accentbg);color:var(--accent)}
.tb:active{transform:scale(.96)}
.tb svg{width:15px;height:15px;stroke:currentColor;stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.sep{width:1px;height:20px;background:var(--line);margin:0 4px}

/* ===== Zoom Indicator ===== */
#zoomInd{position:fixed;bottom:28px;right:28px;display:flex;align-items:center;gap:6px;padding:0 12px;height:28px;background:rgba(255,255,255,.55);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(232,226,218,.5);border-radius:8px;font-size:11px;color:var(--ink3);z-index:100;animation:fadeUp .5s ease .4s both}
#zoomInd svg{width:12px;height:12px;stroke:currentColor;stroke-width:2;fill:none}

/* ===== Search Bar ===== */
#searchWrap{position:fixed;bottom:100px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:4px;padding:6px 8px;background:rgba(255,255,255,.72);backdrop-filter:blur(20px) saturate(1.2);-webkit-backdrop-filter:blur(20px) saturate(1.2);border:1px solid rgba(232,226,218,.6);border-radius:12px;box-shadow:var(--sh3);z-index:100;opacity:0;pointer-events:none;transition:all .25s cubic-bezier(.4,0,.2,1)}
#searchWrap.on{opacity:1;pointer-events:all}
#searchInp{width:200px;padding:6px 10px;border:none;border-radius:6px;background:var(--surface2);color:var(--ink);font-family:'LXGW WenKai','Noto Sans SC','Source Han Sans CN',sans-serif;font-size:13px;outline:0;transition:background var(--ease)}
#searchInp::placeholder{color:var(--ink3);font-style:italic}
#searchInp:focus{background:#fff}
.sbtn{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border:none;border-radius:6px;background:0 0;color:var(--ink3);cursor:pointer;transition:all var(--ease);flex-shrink:0}
.sbtn:hover{background:var(--accentbg);color:var(--accent)}
.sbtn:active{transform:scale(.92)}
.sbtn svg{width:14px;height:14px;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.sbtn.disabled{opacity:.3;pointer-events:none}
#searchCnt{font-size:11px;color:var(--ink3);min-width:36px;text-align:center;user-select:none;display:none}
#searchCnt.show{display:block}
#searchNoRes{font-size:12px;color:var(--ink3);font-style:italic;padding:0 8px;user-select:none}

/* ===== Search Button ===== */
#btnSearch{position:fixed;bottom:28px;right:100px;display:flex;align-items:center;gap:6px;padding:0 12px;height:28px;background:rgba(255,255,255,.55);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(232,226,218,.5);border-radius:8px;font-size:11px;color:var(--ink3);z-index:100;animation:fadeUp .5s ease .4s both;cursor:pointer;transition:all var(--ease)}
#btnSearch:hover{background:rgba(255,255,255,.72);color:var(--accent)}
#btnSearch svg{width:12px;height:12px;stroke:currentColor;stroke-width:2;fill:none}

/* ===== Note Item ===== */
.ni{position:absolute;user-select:none;background:#fdfbf7;border-radius:var(--r2);box-shadow:var(--sh1);border-top:0;border-right:1px solid rgba(0,0,0,.04);border-bottom:0;border-left:0;cursor:grab;transition:box-shadow .3s;overflow:hidden;animation:itemIn .35s cubic-bezier(.34,1.56,.64,1) both}
.ni:hover{box-shadow:var(--sh2)}.ni.sel{box-shadow:var(--sh3);outline:2px solid var(--accent);outline-offset:1px}.ni.drag{cursor:grabbing;box-shadow:var(--sh4);z-index:9999!important;opacity:.92}
.ni.highlighted{box-shadow:var(--sh5)!important}
.ni-hd{display:flex;align-items:center;justify-content:space-between;padding:6px 6px 1px;height:20px;opacity:0;transition:opacity var(--ease)}
.ni:hover .ni-hd,.ni.sel .ni-hd{opacity:1}
.ni-dot{width:8px;height:8px;border-radius:50%;opacity:.5}
.ni-bd{padding:4px 16px 16px;font-size:16px;line-height:1.65;color:var(--ink);min-height:50px;overflow:hidden}
.ni-bd h1{font-family:var(--fd);font-size:1.5em;font-weight:500;margin:0 0 .4em;line-height:1.2}
.ni-bd h2{font-family:var(--fd);font-size:1.25em;font-weight:500;margin:0 0 .3em;line-height:1.3}
.ni-bd h3{font-family:var(--fd);font-size:1.1em;font-weight:600;margin:0 0 .3em;line-height:1.3}
.ni-bd p{margin:0 0 .5em}.ni-bd p:last-child{margin-bottom:0}
.ni-bd strong{font-weight:600}
.ni-bd code{font-family:'DM Mono','LXGW WenKai','Noto Sans SC','Source Han Sans CN',monospace;font-size:.9em;background:rgba(0,0,0,.05);padding:1px 5px;border-radius:4px}
.ni-bd pre{background:#2d2a26;color:#e8e2da;padding:12px 14px;border-radius:8px;overflow-x:auto;margin:.5em 0;font-size:12px;line-height:1.5}
.ni-bd pre code{background:0 0;padding:0;color:inherit}
.ni-bd blockquote{border-left:3px solid var(--accent);padding:4px 0 4px 12px;margin:.5em 0;color:var(--ink2);font-style:italic}
.ni-bd ul,.ni-bd ol{padding-left:1.5em;margin:.4em 0}.ni-bd li{margin:.2em 0}
.ni-bd ul.task-list{list-style:none;padding-left:0}
.ni-bd li.task-item{display:flex;align-items:center;gap:8px;margin:.3em 0}
.ni-bd li.task-item input[type="checkbox"]{margin:0;cursor:pointer;accent-color:var(--accent);width:16px;height:16px;flex-shrink:0}
.ni-bd hr{border:none;border-top:1px solid var(--line);margin:.8em 0}
.ni-bd a{color:var(--accent);text-decoration:none;border-bottom:1px solid transparent;transition:border-color var(--ease)}
.ni-bd a:hover{border-bottom-color:var(--accent)}
.ni-bd img{max-width:100%;border-radius:6px;margin:.4em 0}
.ni-bd del{text-decoration:line-through;opacity:.6}
.rz{position:absolute;bottom:0;right:0;width:20px;height:20px;cursor:nwse-resize;opacity:0;transition:opacity var(--ease)}
.ni:hover .rz,.ni.sel .rz,.ii:hover .rz,.ii.sel .rz{opacity:.4}
.rz::after{content:'';position:absolute;bottom:5px;right:5px;width:18px;height:18px;box-shadow:inset 0 0 0 2px var(--ink3);border-radius:50%;clip-path:polygon(50% 50%, 100% 50%, 100% 100%, 50% 100%)}

/* ===== Image Item ===== */
.ii{position:absolute;user-select:none;background:var(--surface);border-radius:var(--r2);box-shadow:var(--sh1);border:1px solid rgba(0,0,0,.04);cursor:grab;overflow:hidden;transition:box-shadow .3s;animation:itemIn .35s cubic-bezier(.34,1.56,.64,1) both}
.ii:hover{box-shadow:var(--sh2)}.ii.sel{box-shadow:var(--sh3);outline:2px solid var(--accent);outline-offset:1px}.ii.drag{cursor:grabbing;box-shadow:var(--sh4);z-index:9999!important;opacity:.92}
.ii.highlighted{box-shadow:var(--sh5)!important}
.ii-hd{display:flex;align-items:center;justify-content:flex-end;padding:6px 8px;opacity:0;transition:opacity var(--ease)}
.ii:hover .ii-hd,.ii.sel .ii-hd{opacity:1}
.ii-bd{padding:0}.ii-bd img{display:block;width:100%;height:auto;pointer-events:none}

/* ===== Link Item ===== */
.li{position:absolute;user-select:none;background:var(--surface);border-radius:var(--r2);box-shadow:var(--sh1);border:1px solid var(--line2);cursor:grab;overflow:hidden;transition:box-shadow .3s;animation:itemIn .35s cubic-bezier(.34,1.56,.64,1) both}
.li:hover{box-shadow:var(--sh2)}.li.sel{box-shadow:var(--sh3);outline:2px solid var(--accent);outline-offset:1px}.li.drag{cursor:grabbing;box-shadow:var(--sh4);z-index:9999!important;opacity:.92}
.li.highlighted{box-shadow:var(--sh5)!important}
.li-hd{display:flex;align-items:center;justify-content:space-between;padding:6px 10px;opacity:0;transition:opacity var(--ease)}
.li:hover .li-hd,.li.sel .li-hd{opacity:1}
.li-bd{padding:4px 14px 14px;cursor:pointer}
.li-bd:hover .li-dom{color:var(--accent)}
.li-dom{font-family:var(--fd);font-size:16px;font-weight:500;color:var(--ink);transition:color var(--ease);display:flex;align-items:center}
.li-url{font-size:11px;color:var(--ink3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:240px;margin-top:4px}
.li-fav{width:16px;height:16px;margin-right:8px;border-radius:3px}

/* ===== Del Button ===== */
.dbtn{width:20px;height:20px;display:flex;align-items:center;justify-content:center;border:none;border-radius:6px;background:0 0;color:var(--ink3);cursor:pointer;transition:all var(--ease);flex-shrink:0}
.dbtn:hover{background:rgba(200,60,60,.1);color:#c83c3c}
.dbtn svg{width:9px;height:9px;stroke:currentColor;stroke-width:3;fill:none}

/* ===== Editor Overlay ===== */
#edOver{position:fixed;inset:0;background:rgba(45,42,38,.35);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);z-index:1000;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .3s}
#edOver.on{opacity:1;pointer-events:all}
#edMod{width:1020px;max-width:92vw;height:580px;max-height:82vh;background:var(--surface);border-radius:var(--r2);box-shadow:var(--sh4);display:flex;flex-direction:column;overflow:hidden;transform:translateY(12px) scale(.97);transition:transform .3s cubic-bezier(.34,1.56,.64,1)}
#edOver.on #edMod{transform:translateY(0) scale(1)}
.ed-top{display:flex;align-items:center;justify-content:space-between;padding:16px 20px 12px;border-bottom:1px solid var(--line2)}
.ed-title{font-family:var(--fd);font-size:18px;font-weight:400;color:var(--ink2);letter-spacing:.02em}
.ed-clrs{display:flex;gap:6px}
.ed-clr{width:22px;height:22px;border-radius:50%;border:2px solid transparent;cursor:pointer;transition:all var(--ease);position:relative}
.ed-clr:hover{transform:scale(1.15)}
.ed-clr.on{border-color:var(--accent)}
.ed-clr.on::after{content:'\2713';position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:10px;color:var(--ink2)}
.ed-body{flex:1;display:flex;overflow:hidden}
.ed-src{flex:1;display:flex;flex-direction:column;border-right:1px solid var(--line2)}
.ed-lbl{font-size:10px;text-transform:uppercase;letter-spacing:.1em;color:var(--ink3);padding:10px 16px 6px}
.ed-tbar{display:flex;gap:2px;padding:0 12px 8px;flex-wrap:wrap}
.ed-tbar button{padding:4px 8px;border:none;border-radius:5px;background:0 0;color:var(--ink3);font-family:'LXGW WenKai','Noto Sans SC','Source Han Sans CN',sans-serif;font-size:16px;cursor:pointer;transition:all var(--ease)}
.ed-tbar button:hover{background:var(--accentbg);color:var(--accent)}
.ed-ta{flex:1;border:none;outline:0;resize:none;padding:0 16px 16px;font-family:'LXGW WenKai','Noto Sans SC','Source Han Sans CN',sans-serif;font-size:17px;line-height:1.65;color:var(--ink);background:0 0}
.ed-ta::placeholder{color:var(--ink3);font-style:italic}
.ed-prev{flex:1;display:flex;flex-direction:column;overflow:hidden}
.ed-pc{flex:1;padding:0 16px 16px;overflow-y:auto;font-size:17px;line-height:1.65;color:var(--ink)}
.ed-pc h1{font-family:var(--fd);font-size:1.5em;font-weight:500;margin:0 0 .4em}
.ed-pc h2{font-family:var(--fd);font-size:1.25em;font-weight:500;margin:0 0 .3em}
.ed-pc h3{font-family:var(--fd);font-size:1.1em;font-weight:600;margin:0 0 .3em}
.ed-pc p{margin:0 0 .5em}
.ed-pc code{font-family:'DM Mono','LXGW WenKai','Noto Sans SC','Source Han Sans CN',monospace;font-size:.9em;background:rgba(0,0,0,.05);padding:1px 5px;border-radius:4px}
.ed-pc pre{background:#2d2a26;color:#e8e2da;padding:12px 14px;border-radius:8px;overflow-x:auto;margin:.5em 0;font-size:12px}
.ed-pc pre code{background:0 0;padding:0;color:inherit}
.ed-pc blockquote{border-left:3px solid var(--accent);padding:4px 0 4px 12px;margin:.5em 0;color:var(--ink2);font-style:italic}
.ed-pc ul,.ed-pc ol{padding-left:1.5em;margin:.4em 0}.ed-pc li{margin:.2em 0}
.ed-pc ul.task-list{list-style:none;padding-left:0}
.ed-pc li.task-item{display:flex;align-items:center;gap:8px;margin:.3em 0}
.ed-pc li.task-item input[type="checkbox"]{margin:0;cursor:pointer;accent-color:var(--accent);width:16px;height:16px;flex-shrink:0}
.ed-pc a{color:var(--accent);text-decoration:none;border-bottom:1px solid transparent}
.ed-pc a:hover{border-bottom-color:var(--accent)}
.ed-pc img{max-width:100%;border-radius:6px}
.ed-pc hr{border:none;border-top:1px solid var(--line);margin:.8em 0}
.ed-pc del{text-decoration:line-through;opacity:.6}
.ed-foot{display:flex;align-items:center;justify-content:flex-end;gap:8px;padding:12px 20px;border-top:1px solid var(--line2)}
.ebtn{padding:8px 20px;border:none;border-radius:8px;font-family:'LXGW WenKai','Noto Sans SC','Source Han Sans CN',sans-serif;font-size:16px;cursor:pointer;transition:all var(--ease)}
.e-cancel{background:0 0;color:var(--ink3)}.e-cancel:hover{background:rgba(0,0,0,.04);color:var(--ink2)}
.e-save{background:var(--accent);color:#fff}.e-save:hover{background:var(--accent2);transform:translateY(-1px);box-shadow:0 4px 12px rgba(156,124,78,.3)}
.e-save:active{transform:translateY(0)}

/* ===== Link Modal ===== */
#lkOver{position:fixed;inset:0;background:rgba(45,42,38,.35);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);z-index:1000;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .3s}
#lkOver.on{opacity:1;pointer-events:all}
#lkMod{width:420px;background:var(--surface);border-radius:var(--r2);box-shadow:var(--sh4);overflow:hidden;transform:translateY(12px) scale(.97);transition:transform .3s cubic-bezier(.34,1.56,.64,1)}
#lkOver.on #lkMod{transform:translateY(0) scale(1)}
.lk-hd{padding:20px 20px 12px}.lk-tt{font-family:var(--fd);font-size:18px;font-weight:400;color:var(--ink)}
.lk-inp{width:calc(100% - 40px);margin:0 20px 16px;padding:10px 14px;border:1px solid var(--line);border-radius:8px;font-family:'LXGW WenKai','Noto Sans SC','Source Han Sans CN',sans-serif;font-size:13px;color:var(--ink);background:var(--surface2);outline:0;transition:border-color var(--ease)}
.lk-inp:focus{border-color:var(--accent)}.lk-inp::placeholder{color:var(--ink3)}
.lk-ft{display:flex;justify-content:flex-end;gap:8px;padding:12px 20px;border-top:1px solid var(--line2)}

/* ===== Context Menu ===== */
#ctxMenu{position:fixed;background:var(--surface);border-radius:10px;box-shadow:var(--sh3);padding:6px 0;z-index:2000;min-width:140px;opacity:0;pointer-events:none;transition:opacity .15s}
#ctxMenu.show{opacity:1;pointer-events:all}

/* ===== Mobile Responsive ===== */
@media (max-width: 912px) {
    /* Toolbar - smaller and compact */
    #toolbar { bottom: 16px; padding: 4px 6px; border-radius: 12px; gap: 0 }
    .tb { padding: 6px 10px; font-size: 13px; gap: 4px }
    .tb svg { width: 13px; height: 13px }
    .sep { height: 16px; margin: 0 2px }
    
    /* Move search button and zoom indicator to top-right, horizontal layout */
    #btnSearch { 
        position: fixed; 
        top: 12px; 
        right: 12px; 
        bottom: auto; 
        left: auto; 
        transform: none;
        padding: 0 10px;
        height: 24px;
        font-size: 12px;
    }
    #btnSearch svg { width: 13px; height: 13px }
    #btnSearch span { display: none }
    
    /* Zoom indicator next to search button */
    #zoomInd { 
        position: fixed; 
        top: 12px; 
        right: 50px; 
        bottom: auto; 
        height: 24px;
        padding: 0 8px;
        font-size: 10px;
    }
    #zoomInd svg { width: 10px; height: 10px }
    
    /* Search bar - reposition for mobile */
    #searchWrap { bottom: 70px; padding: 4px 6px }
    #searchInp { width: 160px; font-size: 13px; padding: 6px 8px }
    .sbtn { padding: 4px 6px }
    .sbtn svg { width: 12px; height: 12px }
    
    /* Editor modal - full width on mobile with horizontal scroll */
    #edMod { 
        width: 96vw; 
        max-width: none;
        height: 85vh;
        max-height: none;
    }
    .ed-body { overflow-x: auto; overflow-y: hidden }
    .ed-src, .ed-prev { 
        flex: 0 0 100%; 
        min-width: 100%;
        border-right: none;
    }
    .ed-src { border-bottom: 1px solid var(--line2) }
    .ed-ta { font-size: 15px; padding: 0 12px 12px }
    .ed-pc { font-size: 15px; padding: 0 12px 12px; border-bottom: 1px solid var(--line2) }
    .ed-tbar button { padding: 3px 6px; font-size: 14px }
    
    /* Empty state */
    #empty h1 { font-size: 42px }
    #empty p { font-size: 12px; padding: 0 20px }
}

@media (max-width: 480px) {
    /* Extra small screens */
    #toolbar { bottom: 12px }
    .tb { padding: 5px 8px; font-size: 12px }
    #btnSearch { top: 8px; right: 8px }
    #zoomInd { top: 8px; right: 50px }
    #searchWrap { bottom: 60px }
}
.ctx-item{padding:8px 16px;font-size:13px;color:var(--ink);cursor:pointer;transition:background var(--ease);display:flex;align-items:center;gap:8px}
.ctx-item:hover{background:var(--accentbg);color:var(--accent)}
.ctx-item svg{width:14px;height:14px;stroke:currentColor;stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.ctx-sep{height:1px;background:var(--line2);margin:4px 0}

@keyframes fadeUp{from{opacity:0;transform:translate(-50%, 8px)}to{opacity:1;transform:translate(-50%, 0)}}
@keyframes itemIn{from{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}