/* ===========================================================
   골다공증 연수강좌 — study tools (edit, highlight, memo, timer, progress)
   =========================================================== */

/* ---------- reading progress bar ---------- */
#ao-progress{position:fixed;top:60px;left:0;right:0;height:3px;z-index:58;background:transparent;pointer-events:none}
#ao-progress .bar{height:100%;width:0;background:linear-gradient(90deg,var(--brand),var(--knee-a));
  box-shadow:0 0 8px color-mix(in srgb,var(--brand) 60%,transparent);transition:width .12s linear}
#ao-readchip{position:fixed;top:67px;right:14px;z-index:59;font-size:11px;font-weight:750;font-variant-numeric:tabular-nums;
  color:var(--ink-2);background:color-mix(in srgb,var(--surface) 90%,transparent);border:1px solid var(--line);
  border-radius:20px;padding:2px 9px;backdrop-filter:blur(8px);pointer-events:none;opacity:0;transition:opacity .2s}
#ao-readchip.on{opacity:1}
#ao-readchip b{color:var(--brand)}

/* ---------- sidebar overall progress ---------- */
.ao-prog-block{margin:6px 8px 12px;padding:11px 13px;border:1px solid var(--line);border-radius:12px;background:var(--surface-2)}
.ao-prog-block .t{display:flex;justify-content:space-between;align-items:baseline;font-size:11.5px;font-weight:700;color:var(--ink-2);margin-bottom:7px}
.ao-prog-block .t b{font-size:13px;color:var(--brand);font-variant-numeric:tabular-nums}
.ao-prog-track{height:7px;border-radius:20px;background:var(--line);overflow:hidden}
.ao-prog-fill{height:100%;width:0;border-radius:20px;background:linear-gradient(90deg,var(--brand),var(--knee-a));transition:width .4s}
.ao-prog-block .sub{font-size:10.5px;color:var(--ink-3);margin-top:6px;display:flex;justify-content:space-between}
.ao-prog-block .reset{cursor:pointer;color:var(--ink-3);text-decoration:underline}
.ao-prog-block .reset:hover{color:var(--infection)}

/* read marks on nav items */
.nav-item{position:relative}
.nav-item.read{color:var(--ink-3)}
.nav-item.read .num{color:var(--brand)}
.nav-item.read::after{content:"✓";position:absolute;right:8px;top:50%;transform:translateY(-50%);
  color:var(--brand);font-size:11px;font-weight:800}

/* ---------- study dock (bottom-right) ---------- */
.ao-dock{position:fixed;right:18px;bottom:18px;z-index:70;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.ao-fab{width:46px;height:46px;border-radius:14px;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);
  cursor:pointer;display:grid;place-items:center;box-shadow:var(--shadow-lg);transition:.16s;position:relative}
.ao-fab:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px)}
.ao-fab.active{background:linear-gradient(135deg,var(--brand),var(--knee-a));color:#fff;border-color:transparent}
.ao-fab svg{width:21px;height:21px}
.ao-fab .lbl{position:absolute;right:54px;top:50%;transform:translateY(-50%);white-space:nowrap;font-size:11.5px;font-weight:700;
  background:var(--ink);color:var(--bg);padding:3px 9px;border-radius:7px;opacity:0;pointer-events:none;transition:.15s}
.ao-fab:hover .lbl{opacity:.96}
.ao-fab .badge{position:absolute;top:-5px;right:-5px;min-width:17px;height:17px;border-radius:9px;background:var(--infection);
  color:#fff;font-size:10px;font-weight:800;display:grid;place-items:center;padding:0 4px}
.ao-fab.timer-run{border-color:var(--brand)}
.ao-fab .tmini{position:absolute;bottom:-7px;left:50%;transform:translateX(-50%);font-size:9.5px;font-weight:800;
  font-variant-numeric:tabular-nums;background:var(--brand);color:#fff;padding:0 5px;border-radius:7px;white-space:nowrap}

/* ---------- highlight selection popover ---------- */
.ao-hlpop{position:absolute;z-index:90;display:flex;gap:5px;align-items:center;padding:6px 8px;border-radius:12px;
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-lg);transform:translate(-50%,-100%);
  opacity:0;pointer-events:none;transition:opacity .12s}
.ao-hlpop.on{opacity:1;pointer-events:auto}
.ao-hlpop::after{content:"";position:absolute;left:50%;bottom:-6px;transform:translateX(-50%);
  border:6px solid transparent;border-top-color:var(--surface)}
.ao-sw{width:22px;height:22px;border-radius:7px;cursor:pointer;border:1.5px solid rgba(0,0,0,.12);transition:.12s}
.ao-sw:hover{transform:scale(1.18)}
.ao-sw.erase{display:grid;place-items:center;background:var(--surface-2);border-color:var(--line);color:var(--ink-3)}
.ao-sw.erase svg{width:14px;height:14px}
.ao-hlpop .sep{width:1px;height:20px;background:var(--line);margin:0 1px}
.ao-hlpop .memo-from{display:grid;place-items:center;width:24px;height:24px;border-radius:7px;cursor:pointer;color:var(--ink-3);background:var(--surface-2)}
.ao-hlpop .memo-from:hover{color:var(--brand)}
.ao-hlpop .memo-from svg{width:15px;height:15px}

/* highlight marks (force readable text in both themes) */
.article .hl{color:#1b1b1b !important;border-radius:3px;padding:.02em .08em;
  -webkit-box-decoration-break:clone;box-decoration-break:clone}
.article .hl strong,.article .hl em{color:#1b1b1b !important}

/* ---------- edit mode ---------- */
.article.editing{outline:2px dashed color-mix(in srgb,var(--brand) 50%,transparent);outline-offset:10px;border-radius:8px;
  background:color-mix(in srgb,var(--brand) 3%,transparent)}
.article.editing:focus{outline-color:var(--brand)}
.article [contenteditable]{outline:none}
.ao-editbar{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);z-index:71;display:none;align-items:center;gap:12px;
  background:var(--ink);color:var(--bg);padding:8px 10px 8px 16px;border-radius:30px;box-shadow:var(--shadow-lg);font-size:12.5px;font-weight:650}
.ao-editbar.on{display:flex}
.ao-editbar .dotpulse{width:8px;height:8px;border-radius:50%;background:#34d399;box-shadow:0 0 0 0 rgba(52,211,153,.6);animation:aopulse 1.6s infinite}
@keyframes aopulse{0%{box-shadow:0 0 0 0 rgba(52,211,153,.5)}70%{box-shadow:0 0 0 7px rgba(52,211,153,0)}100%{box-shadow:0 0 0 0 rgba(52,211,153,0)}}
.ao-editbar .saved{opacity:.75;font-variant-numeric:tabular-nums}
.ao-editbar button{font-family:inherit;font-size:12px;font-weight:700;border:none;cursor:pointer;border-radius:20px;padding:6px 12px}
.ao-editbar .restore{background:rgba(255,255,255,.14);color:#fff}
.ao-editbar .restore:hover{background:rgba(255,107,107,.85)}
.ao-editbar .done{background:var(--brand);color:#fff}
.article figure.pasted img{cursor:zoom-in;border-color:color-mix(in srgb,var(--brand) 35%,var(--line))}
.article figure.pasted figcaption{color:var(--brand)}
.article.editing figure.fig{position:relative}
.article.editing figure.fig img{cursor:pointer}
.article.editing .fig::after{content:"클릭하여 크기·배치 조정";position:absolute;left:50%;bottom:6px;transform:translateX(-50%);
  font-size:10.5px;font-weight:700;color:#fff;background:rgba(17,24,28,.62);padding:2px 8px;border-radius:20px;pointer-events:none;opacity:0;transition:.15s}
.article.editing .fig:hover::after{opacity:1}

/* image resize/placement UI (overlays) */
.article .ao-imgsel{outline:2.5px solid var(--c,var(--brand));outline-offset:3px;border-radius:8px}
.article .ao-imgsel::after{display:none !important}
.ao-imgbar{position:absolute;z-index:90;display:none;align-items:center;gap:3px;background:#11181c;
  border:1px solid rgba(255,255,255,.08);border-radius:11px;padding:5px 6px;box-shadow:var(--shadow-lg);
  transform:translate(-50%,-100%);white-space:nowrap}
.ao-imgbar .grp{display:flex;gap:2px}
.ao-imgbar .sep{width:1px;height:20px;background:rgba(255,255,255,.16);margin:0 3px}
.ao-imgbar button{border:none;background:transparent;color:#cbd5e1;cursor:pointer;height:28px;min-width:28px;padding:0 8px;
  border-radius:7px;font-family:inherit;font-size:12px;font-weight:800;display:grid;place-items:center;transition:.12s}
.ao-imgbar button:hover{background:rgba(255,255,255,.14);color:#fff}
.ao-imgbar button.on{background:var(--c,var(--brand));color:#fff}
.ao-imgbar button svg{width:16px;height:16px}
.ao-imgbar .del{color:#f6a8a8}
.ao-imgbar .del:hover{background:#e23b3b;color:#fff}
.ao-imghandle{position:absolute;z-index:90;display:none;width:18px;height:18px;border-radius:50%;
  background:var(--c,var(--brand));border:2.5px solid #fff;box-shadow:var(--shadow);cursor:nwse-resize}
.ao-imghandle:hover{transform:scale(1.15)}

/* ---------- slide panel (memo + timer share base) ---------- */
.ao-panel{position:fixed;top:0;right:0;height:100vh;width:380px;max-width:92vw;z-index:80;background:var(--surface);
  border-left:1px solid var(--line);box-shadow:var(--shadow-lg);transform:translateX(102%);transition:transform .26s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column}
.ao-panel.on{transform:none}
.ao-panel .ph{display:flex;align-items:center;gap:10px;padding:16px 18px;border-bottom:1px solid var(--line)}
.ao-panel .ph .ic{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--knee-a));flex:none}
.ao-panel .ph .ic svg{width:18px;height:18px}
.ao-panel .ph h3{margin:0;font-size:15px;font-weight:800}
.ao-panel .ph .sub{font-size:11px;color:var(--ink-3);font-weight:600}
.ao-panel .ph .x{margin-left:auto;background:none;border:none;color:var(--ink-3);cursor:pointer;font-size:22px;line-height:1;width:32px;height:32px;border-radius:8px}
.ao-panel .ph .x:hover{background:var(--surface-2);color:var(--ink)}
.ao-panel .pbody{flex:1;overflow-y:auto;padding:16px 18px}

/* memo */
.ao-memo{min-height:calc(100% - 8px);font-size:14px;line-height:1.7;color:var(--ink);outline:none}
.ao-memo:empty::before{content:attr(data-ph);color:var(--ink-3)}
.ao-memo img{max-width:100%;border-radius:10px;border:1px solid var(--line);margin:8px 0;cursor:zoom-in}
.ao-memo-foot{padding:10px 18px;border-top:1px solid var(--line);font-size:11px;color:var(--ink-3);display:flex;justify-content:space-between;align-items:center}
.ao-memo-foot .scope{display:flex;gap:4px;background:var(--surface-2);border-radius:8px;padding:3px}
.ao-memo-foot .scope button{border:none;background:none;cursor:pointer;font-family:inherit;font-size:11px;font-weight:700;color:var(--ink-3);padding:3px 10px;border-radius:6px}
.ao-memo-foot .scope button.on{background:var(--surface);color:var(--brand);box-shadow:var(--shadow)}

/* timer — compact draggable floating widget */
.ao-tfloat{position:fixed;right:80px;bottom:20px;z-index:86;width:244px;background:var(--surface);
  border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-lg);display:none;overflow:hidden;
  -webkit-user-select:none;user-select:none}
.ao-tfloat.show{display:block;animation:aoPop .18s ease}
@keyframes aoPop{from{opacity:0;transform:scale(.96)}to{opacity:1;transform:none}}
.ao-tf-head{display:flex;align-items:center;gap:8px;padding:8px 8px 8px 13px;cursor:grab;
  background:linear-gradient(135deg,var(--c,var(--brand)),var(--ca,var(--knee-a)));color:#fff}
.ao-tf-head.grabbing{cursor:grabbing}
.ao-tf-head .hic{display:grid;place-items:center}
.ao-tf-head .hic svg{width:16px;height:16px}
.ao-tf-head h4{flex:1;margin:0;font-size:13px;font-weight:800;letter-spacing:-.01em}
.ao-tf-head .x{background:rgba(255,255,255,.18);border:none;color:#fff;cursor:pointer;width:24px;height:24px;
  border-radius:7px;font-size:17px;line-height:1;display:grid;place-items:center}
.ao-tf-head .x:hover{background:rgba(255,255,255,.32)}
.ao-tf-body{padding:12px 14px 14px}
.ao-tf-time{font-size:42px;font-weight:850;text-align:center;font-variant-numeric:tabular-nums;
  font-family:var(--mono);letter-spacing:-.03em;color:var(--ink);line-height:1.05}
.ao-tf-time.warn{color:var(--infection)}
.ao-tf-bar{height:6px;border-radius:20px;background:var(--line);margin:9px 0 12px;overflow:hidden}
.ao-tf-bar i{display:block;height:100%;width:100%;border-radius:20px;
  background:linear-gradient(90deg,var(--brand),var(--knee-a));transition:width .9s linear}
.ao-tf-pre{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:11px}
.ao-tf-pre button{flex:1;min-width:38px;border:1px solid var(--line);background:var(--surface-2);color:var(--ink-2);
  border-radius:9px;padding:7px 0;font-family:inherit;font-weight:800;font-size:13px;cursor:pointer;
  font-variant-numeric:tabular-nums;transition:.12s}
.ao-tf-pre button:hover{border-color:var(--brand);color:var(--ink)}
.ao-tf-pre button.on{background:linear-gradient(135deg,var(--brand),var(--knee-a));color:#fff;border-color:transparent}
.ao-tf-pre input{width:48px;flex:0 0 auto;height:32px;border:1px solid var(--line);background:var(--surface-2);
  border-radius:9px;text-align:center;color:var(--ink);font-family:inherit;font-size:13px;font-weight:700;outline:none;
  -moz-appearance:textfield}
.ao-tf-pre input:focus{border-color:var(--brand)}
.ao-tf-pre input::-webkit-outer-spin-button,.ao-tf-pre input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.ao-tf-ctrl{display:grid;grid-template-columns:1fr auto;gap:7px}
.ao-tf-start{border:none;cursor:pointer;font-family:inherit;font-weight:800;font-size:14px;border-radius:11px;padding:11px;
  background:linear-gradient(135deg,var(--brand),var(--knee-a));color:#fff;transition:.12s}
.ao-tf-start:hover{filter:brightness(1.07)}
.ao-tf-reset{border:1px solid var(--line);background:var(--surface-2);color:var(--ink-2);cursor:pointer;
  width:44px;border-radius:11px;font-size:18px;transition:.12s}
.ao-tf-reset:hover{color:var(--infection);border-color:var(--infection)}

/* toast */
.ao-toast{position:fixed;left:50%;top:80px;transform:translateX(-50%) translateY(-14px);z-index:120;
  background:var(--ink);color:var(--bg);padding:12px 20px;border-radius:14px;box-shadow:var(--shadow-lg);
  font-size:14px;font-weight:700;opacity:0;pointer-events:none;transition:.25s;display:flex;align-items:center;gap:10px}
.ao-toast.on{opacity:1;transform:translateX(-50%) translateY(0)}
.ao-toast svg{width:20px;height:20px;color:#34d399}

.ao-backdrop2{display:none;position:fixed;inset:0;z-index:79;background:rgba(8,10,14,.32)}
.ao-backdrop2.on{display:block}

/* ---- image crop + fine rotation ---- */
.ao-crop-back{position:fixed;inset:0;z-index:200;background:rgba(8,10,14,.62);backdrop-filter:blur(2px)}
.ao-crop{position:fixed;z-index:201;left:50%;top:50%;transform:translate(-50%,-50%);width:auto;max-width:96vw;
  background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:0 30px 90px rgba(0,0,0,.5);
  display:flex;flex-direction:column;overflow:hidden}
.ao-crop-head{display:flex;align-items:center;gap:10px;padding:13px 18px;border-bottom:1px solid var(--line);font-size:14.5px}
.ao-crop-head b{font-weight:800}
.ao-crop-head .x{margin-left:auto;background:none;border:none;color:var(--ink-3);cursor:pointer;font-size:22px;line-height:1;width:30px;height:30px;border-radius:8px}
.ao-crop-head .x:hover{background:var(--surface-2);color:var(--ink)}
.ao-crop-stage{padding:18px;display:grid;place-items:center;background:repeating-conic-gradient(#000 0% 25%,#151515 0% 50%) 50%/22px 22px;background-color:#0d0f12}
.ao-crop-wrap{position:relative;line-height:0;box-shadow:0 6px 24px rgba(0,0,0,.4)}
.ao-crop-wrap canvas{display:block;user-select:none;-webkit-user-drag:none}
.ao-crop-box{position:absolute;box-sizing:border-box;border:1.5px solid #fff;cursor:move;
  box-shadow:0 0 0 100vmax rgba(0,0,0,.55);background:
    linear-gradient(#fff,#fff) left 33.33% top 0/1px 100% no-repeat,
    linear-gradient(#fff,#fff) left 66.66% top 0/1px 100% no-repeat,
    linear-gradient(#fff,#fff) left 0 top 33.33%/100% 1px no-repeat,
    linear-gradient(#fff,#fff) left 0 top 66.66%/100% 1px no-repeat;background-blend-mode:overlay;opacity:.98}
.ao-crop-box .hd{position:absolute;width:12px;height:12px;background:var(--c,#0e7c86);border:2px solid #fff;border-radius:3px;box-shadow:0 1px 3px rgba(0,0,0,.4)}
.hd-nw{left:-7px;top:-7px;cursor:nwse-resize}.hd-ne{right:-7px;top:-7px;cursor:nesw-resize}
.hd-se{right:-7px;bottom:-7px;cursor:nwse-resize}.hd-sw{left:-7px;bottom:-7px;cursor:nesw-resize}
.hd-n{left:50%;top:-7px;transform:translateX(-50%);cursor:ns-resize}.hd-s{left:50%;bottom:-7px;transform:translateX(-50%);cursor:ns-resize}
.hd-w{left:-7px;top:50%;transform:translateY(-50%);cursor:ew-resize}.hd-e{right:-7px;top:50%;transform:translateY(-50%);cursor:ew-resize}
.ao-crop-ctrl{display:flex;align-items:center;gap:7px;flex-wrap:wrap;padding:12px 18px;border-top:1px solid var(--line)}
.ao-crop-ctrl .lb{font-size:12.5px;font-weight:700;color:var(--ink-3)}
.ao-crop-ctrl input[type=range]{flex:1;min-width:140px;accent-color:var(--c,#0e7c86)}
.ao-crop-ctrl button{border:1px solid var(--line);background:var(--surface-2);color:var(--ink);cursor:pointer;
  height:30px;min-width:34px;padding:0 9px;border-radius:8px;font-size:12.5px;font-weight:700}
.ao-crop-ctrl button:hover{border-color:var(--c,#0e7c86);color:var(--c,#0e7c86)}
.ao-crop-ctrl .deg{font-variant-numeric:tabular-nums;font-weight:800;font-size:13px;min-width:52px;text-align:center;color:var(--c,#0e7c86)}
.ao-crop-ctrl .reset{margin-left:2px}
.ao-crop-foot{display:flex;align-items:center;gap:12px;padding:12px 18px;border-top:1px solid var(--line)}
.ao-crop-foot .hint{font-size:11.5px;color:var(--ink-3)}
.ao-crop-foot .btns{margin-left:auto;display:flex;gap:8px}
.ao-crop-foot .cancel{background:var(--surface-2);border:1px solid var(--line);color:var(--ink);height:36px;padding:0 16px;border-radius:9px;font-weight:700;cursor:pointer}
.ao-crop-foot .apply{background:var(--c,#0e7c86);border:none;color:#fff;height:36px;padding:0 20px;border-radius:9px;font-weight:800;cursor:pointer}
.ao-crop-foot .apply:hover{filter:brightness(1.06)}
@media(max-width:820px){
  .ao-crop-ctrl{gap:5px}
  .ao-crop-foot .hint{display:none}
}

@media(max-width:820px){
  #ao-progress{top:60px}
  .ao-dock{right:14px;bottom:14px}
  #ao-readchip{top:66px;right:10px}
}
@media print{
  .ao-dock,.ao-editbar,.ao-hlpop,#ao-progress,#ao-readchip,.ao-panel,.ao-tfloat,.ao-imgbar,.ao-imghandle,.ao-backdrop2,.topbar,.sidebar,.toc{display:none !important}
  .article .ao-imgsel{outline:none !important}
}