/* IBAL | JTHOOR — interactive book viewer (flipbook) */
*{box-sizing:border-box}
html,body{height:100%;margin:0;overflow:hidden;background:var(--bg);color:var(--ink);font:15px var(--font-ui);touch-action:none;-webkit-user-select:none;user-select:none}
.viewer{display:flex;flex-direction:column;height:100%}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 12px;min-height:58px;color:#fff}
.topbar .brand-lockup img{width:36px;height:36px}.topbar .brand-name{font-size:13px}.topbar .brand-caption{font-size:12px;max-width:40vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tools{display:flex;gap:4px;flex-wrap:wrap;justify-content:flex-end}
.tools button{min-width:38px;height:38px;border-radius:10px;border:1px solid #ffffff33;background:#ffffff14;color:#fff;font-size:16px;cursor:pointer;padding:0 8px}
.tools button[aria-pressed=true]{background:var(--gold);color:#3a2400;border-color:var(--gold-deep);font-weight:800}
.tools button:focus-visible{outline:3px solid var(--gold);outline-offset:2px}

.stage{position:relative;flex:1;min-height:0;overflow:hidden;background:radial-gradient(ellipse at center,#efe2f5 0%,#d9c4e3 70%,#c8b0d6 100%)}
.hc .stage{background:#2b2b2b}
.scene{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;transform-origin:0 0;will-change:transform}
.book{position:relative;display:flex;flex-direction:row;direction:ltr;transition:transform .45s ease}
.book.closed-start{transform:translateX(25%)}.book.closed-end{transform:translateX(-25%)}
.half{position:relative;width:50%;height:100%;background:#fff;overflow:hidden;border-radius:4px;box-shadow:0 14px 30px rgba(46,10,60,.28)}
.half.left{border-radius:4px 10px 10px 4px}.half.right{border-radius:10px 4px 4px 10px}
.book.single .half{width:100%}.book.single .half.right{display:none}
.half.empty{visibility:hidden}
.half.nounder{background:transparent;box-shadow:none}
.cur{position:absolute;inset:0;background:#fff;will-change:clip-path}
.cur>img,.half>img.under{position:absolute;inset:0;width:100%;height:100%;object-fit:fill;display:block;background:#fff;pointer-events:none}
.undershade{position:absolute;inset:0;pointer-events:none}
.hc .cur>img,.hc .half>img.under,.hc .flapinner>img{filter:contrast(1.35) brightness(1.04)}
.spine-shadow{position:absolute;inset:0;pointer-events:none}
.half.left .spine-shadow{background:linear-gradient(to left,rgba(0,0,0,.22) 0%,rgba(0,0,0,.07) 6%,rgba(0,0,0,0) 14%)}
.half.right .spine-shadow{background:linear-gradient(to right,rgba(0,0,0,.22) 0%,rgba(0,0,0,.07) 6%,rgba(0,0,0,0) 14%)}
.book.single .spine-shadow{background:linear-gradient(to left,rgba(0,0,0,.10) 0%,rgba(0,0,0,0) 8%)}

/* the curling sheet: the folded part is drawn mirrored across the fold line */
.flapwrap{position:absolute;inset:0;pointer-events:none;z-index:6}
.flapwrap.mir{transform:scaleX(-1)}
.flap{position:absolute;left:0;top:0;width:50%;height:100%;transform-origin:0 0;display:none;will-change:transform}
.book.single .flap{width:100%}
.flapinner{position:absolute;inset:0;background:#fbf9f5;will-change:clip-path}
.flapinner>img{position:absolute;inset:0;width:100%;height:100%;object-fit:fill;display:block}
.flapshade{position:absolute;inset:0}
.flapwrap.mir .flapinner>img{transform:scaleX(-1)}
.edges{position:absolute;top:1.5%;height:97%;width:0;pointer-events:none;background:repeating-linear-gradient(to right,#f7f2fa 0,#f7f2fa 1px,#d6c9dd 1px,#d6c9dd 2px);box-shadow:0 2px 6px rgba(0,0,0,.25)}
.edges.left{right:100%;border-radius:4px 0 0 4px}.edges.right{left:100%;border-radius:0 4px 4px 0}

.spots{position:absolute;inset:0;pointer-events:none}
.spot{position:absolute;pointer-events:auto;border:3px solid var(--gold);background:rgba(255,178,62,.14);border-radius:10px;cursor:pointer;padding:0;color:#3a2400;font:inherit;display:flex;align-items:flex-end;justify-content:flex-start;box-shadow:0 0 0 2px #ffffffaa;animation:pulse 2.2s ease-in-out infinite}
.spot span{background:var(--gold-gradient);color:#3a2400;font-size:12px;font-weight:800;padding:3px 8px;border-radius:6px 6px 0 0;margin:0 0 -3px 6px;white-space:nowrap}
.spot:hover,.spot:focus-visible{background:rgba(255,178,62,.3);outline:none;animation:none}
.book{--isz:clamp(16px,calc(var(--ph) * .054),48px)}
.acticon{position:absolute;pointer-events:auto;width:var(--isz);height:var(--isz);padding:0;margin:0;border:0;border-radius:50%;background:transparent;cursor:pointer;z-index:3;line-height:0;filter:drop-shadow(0 2px 3px rgba(46,10,60,.38))}
.acticon svg{display:block;width:100%;height:100%}
.acticon:hover,.acticon:focus-visible{outline:none;filter:drop-shadow(0 0 0 transparent) drop-shadow(0 0 5px var(--gold)) drop-shadow(0 2px 3px rgba(46,10,60,.45))}
.acticon:active{filter:brightness(.92) drop-shadow(0 1px 2px rgba(46,10,60,.4))}
.book.ltr .acticon{transform:scaleX(1)}
@keyframes pulse{0%,100%{box-shadow:0 0 0 2px #ffffffaa}50%{box-shadow:0 0 0 7px #ffb23e55}}
.book.peel-back-single .spots{visibility:hidden}

.nav{position:absolute;top:50%;transform:translateY(-50%);width:46px;height:80px;border:0;border-radius:14px;background:#2e0a3cbb;color:#fff;font-size:34px;cursor:pointer;z-index:8;display:flex;align-items:center;justify-content:center}
.nav.next{left:8px}.nav.prev{right:8px}
.nav:disabled{opacity:.25;cursor:default}.nav:focus-visible{outline:3px solid var(--gold)}
.chips{position:absolute;top:10px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:8;flex-wrap:wrap;justify-content:center;max-width:90%;pointer-events:none}
.chips button{border:1px solid var(--plum);background:#fff;color:var(--plum);border-radius:20px;padding:8px 14px;font:inherit;font-weight:700;cursor:pointer;box-shadow:var(--shadow);font-size:13px;pointer-events:auto}
.chips button.lesson{background:var(--brand-gradient);color:#fff}.chips button.ar{background:var(--lilac);color:#fff;border-color:var(--purple)}
.toast{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);background:#2e0a3ce6;color:#fff;padding:10px 16px;border-radius:12px;font-size:14px;z-index:9;max-width:90%}

.bottombar{display:flex;align-items:center;gap:10px;padding:8px 12px;background:#fff;border-top:1px solid var(--line);flex-wrap:wrap}
.bottombar button{min-width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--plum);font-size:20px;cursor:pointer}
.bottombar input[type=range]{flex:1;min-width:120px;accent-color:var(--plum);direction:rtl}
.pagelabel{font-size:14px;color:var(--plum);min-width:110px;text-align:center;font-weight:700}
.autopanel{display:flex;align-items:center;gap:10px;flex-wrap:wrap;width:100%;padding-top:6px;border-top:1px dashed var(--line);font-size:13px}
.autopanel select{font:inherit;padding:6px;border-radius:8px;border:1px solid var(--line)}
.autopanel .primary{background:var(--brand-gradient);color:#fff;border-color:var(--plum);padding:0 14px;font-size:15px;font-weight:700}
.autopanel .primary[aria-pressed=true]{background:var(--gold-gradient);color:#3a2400}
.ring{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:50%;background:conic-gradient(var(--plum) var(--p,0%),#e9dff0 0);font-size:12px;font-weight:700;color:var(--plum)}
.ring span{background:#fff;border-radius:50%;width:30px;height:30px;display:grid;place-items:center}
.bigbutton{position:fixed;left:12px;right:12px;bottom:76px;height:96px;border:0;border-radius:24px;background:var(--gold-gradient);color:#3a2400;font:800 28px var(--font-ui);box-shadow:0 14px 34px rgba(46,10,60,.35);z-index:20;cursor:pointer}
.bigbutton:active{transform:scale(.98)}

.drawer{position:fixed;top:0;bottom:0;right:0;width:min(420px,92vw);background:#fff;z-index:30;overflow:auto;padding:16px;box-shadow:-12px 0 40px rgba(46,10,60,.3)}
.drawer h2{margin:0;color:var(--plum);font-size:18px}.drawer h3{font-size:14px;color:var(--plum);margin:18px 0 8px}
.drawer .item{display:block;width:100%;text-align:right;border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin:6px 0;background:var(--bg);font:inherit;cursor:pointer;color:var(--ink)}
.drawer .item small{display:block;color:#706078;font-size:12px}
.thumbgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(84px,1fr));gap:8px}
.thumbgrid button{border:1px solid var(--line);border-radius:8px;background:#fff;padding:4px;cursor:pointer;font:inherit;font-size:11px;color:var(--plum)}
.thumbgrid img{width:100%;height:96px;object-fit:contain;background:var(--cream);display:block}
.thumbgrid button[aria-current=true]{border:2px solid var(--plum);background:#f2e6f7}

.activity-dialog{width:min(460px,96vw);max-height:96vh}
.phone-frame{width:390px;max-width:100%;height:700px;max-height:72vh;margin:12px auto;border:10px solid #2e0a3c;border-radius:28px;overflow:hidden;background:#fff;box-shadow:0 20px 50px #2e0a3c40}
.phone-frame iframe{width:100%;height:100%;border:0}
.help{line-height:2;font-size:14px;padding-right:20px}
.editor-dialog{width:min(560px,95vw);border:1px solid var(--line);border-radius:18px;padding:20px;color:var(--ink);font-family:var(--font-ui)}
.editor-dialog::backdrop{background:#2e0a3c80}
.dialogbar{display:flex;align-items:center;justify-content:space-between;gap:10px}.dialogbar h2{margin:0;font-size:17px;color:var(--plum)}
.dialogbar button{font:inherit;border:1px solid var(--line);border-radius:8px;padding:8px 12px;background:#fff;cursor:pointer}
.chip{display:inline-block;font-size:12px;padding:3px 9px;border-radius:14px;background:#e6f3e9;color:#14552d;font-weight:700}

.hc body,.hc{--bg:#111;--ink:#fff}
.hc .bottombar{background:#000;color:#fff;border-top-color:#444}.hc .bottombar button{background:#000;color:#ffb23e;border-color:#666}.hc .pagelabel{color:#ffd27a}
.hc .chips button{background:#000;color:#ffd27a;border-color:#ffd27a}
@media (prefers-reduced-motion:reduce){.spot{animation:none}}
@media (max-width:640px){.tools button{min-width:34px;height:34px;font-size:14px}.nav{width:36px;height:64px;font-size:28px}.topbar .brand-caption{max-width:30vw}}
[hidden]{display:none!important}

/* ---- English (left-to-right) books: mirror the whole book, un-mirror page content ---- */
.book.ltr{transform:scaleX(-1)}
.book.ltr.closed-start{transform:scaleX(-1) translateX(25%)}.book.ltr.closed-end{transform:scaleX(-1) translateX(-25%)}
.book.ltr .cur>img,.book.ltr .half>img.under,.book.ltr .spots,.book.ltr .flapinner>img{transform:scaleX(-1)}
.book.ltr .flapwrap.mir .flapinner>img{transform:none}
.ltr .nav.next{left:auto;right:8px}.ltr .nav.prev{right:auto;left:8px}
.settings{display:grid;gap:8px;margin:8px 0 14px}.settings label{font-size:13px;display:flex;align-items:center;justify-content:space-between;gap:8px}.settings select{font:inherit;padding:6px 8px;border:1px solid var(--line);border-radius:8px;max-width:60%}

/* ---- overlay elements authored in the studio ---- */
.book{--ph:600px}
.ov{position:absolute;pointer-events:auto;margin:0;padding:0 .5em;border-radius:.6em;font:700 clamp(10px,calc(var(--ph)*.022),20px) var(--font-ui);display:flex;align-items:center;justify-content:center;gap:.4em;cursor:pointer;border:2px solid #ffffffcc;box-shadow:0 3px 10px rgba(46,10,60,.3);overflow:hidden}
.ov .ovlabel{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ov-video,.ov-youtube,.ov-audio{background:var(--brand-gradient);color:#fff}
.ov-button,.ov-activity{background:var(--gold-gradient);color:#3a2400;border-color:#fff}
.ov-link{background:#fff;color:var(--plum);border-color:var(--plum)}
.ov-image{background:#fff;color:var(--plum);border-color:var(--plum)}
.ov-image.inline{padding:0;background:transparent;border:0;box-shadow:none;border-radius:.4em}
.ov-image.inline img{width:100%;height:100%;object-fit:contain;display:block;pointer-events:none}
.ov:hover,.ov:focus-visible{filter:brightness(1.08);outline:3px solid var(--gold);outline-offset:2px}
.ov-text{cursor:default;pointer-events:none;display:block;padding:.4em .6em;white-space:pre-wrap;line-height:1.6;text-align:start;font-weight:500;color:var(--ink);border:0;box-shadow:none;border-radius:.4em}
.ov-text.sz-s{font-size:calc(var(--ph)*.018)}.ov-text.sz-m{font-size:calc(var(--ph)*.024)}.ov-text.sz-l{font-size:calc(var(--ph)*.033)}
.ov-text.st-card{background:#fffffff2;border:1px solid var(--line);box-shadow:0 2px 8px rgba(46,10,60,.15)}.ov-text.st-note{background:#fff3d6f2;border-inline-start:4px solid var(--gold-deep)}.ov-text.st-plain{background:transparent}
.media-dialog{width:min(900px,96vw)}
.mediabody{margin-top:12px;display:grid;place-items:center}
.mediabody video{width:100%;height:auto;max-height:75vh;background:#000;border-radius:12px}
.mediabody iframe{width:100%;aspect-ratio:16/9;border:0;border-radius:12px;background:#000}
.mediabody audio{width:100%}
.mediabody img{max-width:100%;max-height:78vh;border-radius:12px}
.ov{text-align:center;line-height:1.25}.ov .ovlabel{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.ov{line-height:1.5}

/* ---- reader annotation layer (pen / highlighter / effort-preserving eraser) ---- */
.annot{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;touch-action:none;z-index:4}
.book.drawing .annot{pointer-events:auto}
.book.drawing .spots{pointer-events:none}
.book.drawing{cursor:crosshair}
.book.ltr .cur>canvas.annot{transform:scaleX(-1)}
body.penmode .chips{display:none}
.penbar{display:flex;flex-wrap:wrap;gap:6px;align-items:center;justify-content:center;background:#fff;border-top:1px solid var(--line);padding:8px 10px;box-shadow:0 -6px 20px rgba(46,10,60,.10);z-index:12}
.penbar .pengroup{display:flex;gap:4px;align-items:center;padding:0 5px;border-inline-end:1px solid var(--line)}
.penbar .pengroup:last-of-type{border-inline-end:0}
.pentool{min-width:38px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--plum);font:600 13px var(--font-ui);cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1;gap:1px;padding:0 6px}
.pentool span{font-size:10px;font-weight:700}
.pentool.wide{flex-direction:row;gap:4px;min-width:auto;padding:0 10px;font-size:12px}
.pentool[aria-pressed=true]{background:var(--brand-gradient);color:#fff;border-color:var(--plum)}
.pentool:disabled{opacity:.4;cursor:default}
.pentool:focus-visible,.swatch:focus-visible,.pendone:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
.swatch{width:30px;height:30px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px var(--line);cursor:pointer;padding:0}
.swatch[aria-pressed=true]{box-shadow:0 0 0 3px var(--plum);transform:scale(1.08)}
.pendone{height:40px;border:0;border-radius:10px;background:var(--gold-gradient);color:#3a2400;font:800 14px var(--font-ui);cursor:pointer;padding:0 16px}
.hc .penbar{background:#111;border-color:#555}.hc .pentool{background:#000;color:#ffd27a;border-color:#666}
@media (max-width:640px){.pentool span{display:none}.pentool{min-width:34px;height:36px}.pentool.wide{font-size:11px;padding:0 8px}.swatch{width:26px;height:26px}.penbar{gap:4px;padding:6px}}

/* ───── الهاتف: الكتاب أولًا، والأدوات في صفٍّ واحد ───── */
@media (max-width:640px){
  .topbar{flex-wrap:wrap;gap:4px 8px;padding:6px 10px;min-height:0}
  .topbar .brand-lockup{flex:1 1 auto;min-width:0}
  .topbar .brand-lockup img{width:28px;height:28px}
  .topbar .brand-caption{max-width:62vw}
  .tools{flex:1 1 100%;flex-wrap:nowrap;overflow-x:auto;justify-content:flex-start;padding-bottom:2px;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .tools::-webkit-scrollbar{display:none}
  .tools button{flex:0 0 auto;min-width:40px;height:40px}
  .bottombar{padding:6px 10px;gap:8px;flex-wrap:nowrap}
  .bottombar button{min-width:44px;height:44px}
  .bottombar input[type=range]{min-width:60px}
  /* الحوار: ملءُ الشاشة بلا إطارٍ داكن يُهدر العرض */
  .activity-dialog{width:100vw;max-width:100vw;height:100dvh;max-height:100dvh;margin:0;border:0;border-radius:0;padding:10px 10px 8px}
  .activity-dialog[open]{display:flex;flex-direction:column}
  .activity-dialog .phone-frame{flex:1;width:100%;height:auto;max-height:none;margin:8px 0 0;border:0;border-radius:14px;box-shadow:none;background:#fff}
  .media-dialog{width:100vw;max-width:100vw}
}
/* ───── الهاتف أفقيًّا / الأجهزة القصيرة: اختصارُ كلّ ما يأكل الارتفاع ───── */
@media (max-height:480px){
  .topbar{padding:3px 10px;min-height:0;flex-wrap:nowrap;gap:8px}
  .topbar .brand-lockup img{width:24px;height:24px}
  .topbar .brand-caption{display:none}
  .topbar .brand-name{font-size:12px}
  .tools{flex-wrap:nowrap;overflow-x:auto;flex:1 1 auto;scrollbar-width:none}
  .tools::-webkit-scrollbar{display:none}
  .tools button{flex:0 0 auto;min-width:34px;height:32px;font-size:14px;padding:0 6px}
  .bottombar{padding:3px 10px;gap:8px;flex-wrap:nowrap}
  .bottombar button{min-width:40px;height:34px;font-size:18px}
  .pagelabel{font-size:12px}
  .nav{height:52px}
  .activity-dialog{width:min(100vw,720px);max-height:100dvh;height:100dvh;margin:0 auto;padding:6px 10px;border-radius:0}
  .activity-dialog[open]{display:flex;flex-direction:column}
  .activity-dialog .phone-frame{flex:1;width:100%;height:auto;max-height:none;margin:4px 0 0;border:0;border-radius:10px;box-shadow:none}
}

/* ───── الألواح (آيباد): نشاطٌ كبيرٌ بلا إطارٍ داكن ───── */
@media (min-width:768px) and (min-height:600px){
  .activity-dialog{width:auto;max-width:96vw;padding:14px 18px 18px}
  .activity-dialog .phone-frame{position:relative;max-height:none;margin:12px auto 0;border:0;border-radius:22px;box-shadow:0 10px 36px rgba(46,10,60,.28);overflow:hidden}
  .activity-dialog .phone-frame iframe{position:absolute;top:0;left:0;transform-origin:0 0;width:390px;height:680px}
}
.activity-dialog .dialogbar h2{min-width:0;overflow-wrap:anywhere;line-height:1.5}

/* أيقونات الأزرار النصّيّة */
.chipicon{display:inline-block;width:1.25em;height:1.25em;vertical-align:-.25em;margin-inline-end:.15em;line-height:0}
.chipicon svg{width:100%;height:100%;display:block}
.ov .ovicon{display:inline-block;width:1.5em;height:1.5em;line-height:0;font-size:inherit}
.ov .ovicon svg{width:100%;height:100%;display:block}