/* ============================================================
   BOOK — صفحة الكتاب + صفحة القراءة
   الوضع الافتراضي ليلي (ألوان الموقع)، والوضع الورقي بألوان النسخة المطبوعة.
   ============================================================ */

.bk{
  --k-ink:var(--ink);
  --k-body:#C7D0DE;
  --k-muted:var(--muted);
  --k-accent:var(--accent);
  --k-alert:var(--gold);
  --k-card:var(--surface);
  --k-card-2:var(--surface-2);
  --k-line:var(--line-2);
  --k-tt:#A5DDFA;
  --k-rule:linear-gradient(135deg,#16314F 0%,#0E2238 100%);
  --k-fs:1.09rem;
}
html[data-bk-theme="paper"] body.single-ahmed_book{background:#F4F0E8}
html[data-bk-theme="paper"] body.single-ahmed_book::before{display:none}
html[data-bk-theme="paper"] body.single-ahmed_book .site-footer{background:var(--bg)}
html[data-bk-theme="paper"] body.single-ahmed_book .bk{
  --k-ink:#12263F;
  --k-body:#1B2430;
  --k-muted:#5C6672;
  --k-accent:#0F7B8A;
  --k-alert:#B5701F;
  --k-card:#fff;
  --k-card-2:#FBF9F5;
  --k-line:#D8D3CB;
  --k-tt:#16324F;
  --k-rule:linear-gradient(135deg,#12263F,#12263F);
}
html[data-bk-fs="-1"] .bk{--k-fs:.98rem}
html[data-bk-fs="1"] .bk{--k-fs:1.22rem}
html[data-bk-fs="2"] .bk{--k-fs:1.36rem}

.bk-page .site-footer{padding-bottom:78px}
.hp-field{position:absolute!important;inset-inline-start:-9999px;width:1px;height:1px;overflow:hidden}

/* ---------- layout ---------- */
.bk-layout{display:grid;grid-template-columns:290px minmax(0,1fr);gap:56px;align-items:start}
.bk-main{max-width:720px;min-width:0}
.crumbs{font-size:.85rem;color:var(--k-muted);display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.crumbs a{color:var(--k-muted)}
.crumbs a:hover{color:var(--k-accent)}

/* ---------- الفهرس الجانبي ---------- */
.bk-side{position:sticky;top:96px;max-height:calc(100vh - 116px);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--k-line) transparent}
.bk-side__in{padding:18px 16px 16px;border:1px solid var(--k-line);border-radius:var(--r);background:var(--k-card)}
.bk-side__book{display:block;margin-bottom:12px}
.bk-side__book span{display:block;font-size:.72rem;letter-spacing:.14em;color:var(--k-accent);font-weight:600}
.bk-side__book strong{font-family:var(--f-display);font-size:1.12rem;color:var(--k-ink);line-height:1.5}
.bk-meter{display:block;height:4px;border-radius:9px;background:var(--k-line);overflow:hidden}
.bk-meter i{display:block;height:100%;width:0;border-radius:9px;background:linear-gradient(270deg,var(--k-accent),var(--k-alert));transition:width .8s var(--ease-out)}
.bk-meter__label{font-size:.76rem;color:var(--k-muted);margin:6px 0 10px}
.bk-toc__list{list-style:none;border-top:1px solid var(--k-line);padding-top:8px}
.bk-toc__part{margin:14px 0 4px;padding:0 8px;font-size:.84rem;font-weight:700;color:var(--k-ink);line-height:1.6}
.bk-toc__part>span:not(.tt){display:block;font-size:.68rem;letter-spacing:.14em;color:var(--k-accent);font-weight:600}
.bk-toc__item a{display:flex;gap:10px;align-items:baseline;padding:7px 8px;border-radius:9px;font-size:.88rem;line-height:1.6;color:var(--k-muted);transition:background .2s,color .2s}
.bk-toc__item a:hover{color:var(--k-ink);background:rgba(127,150,180,.1)}
.bk-toc__item a[aria-current]{color:var(--k-ink);background:rgba(56,189,248,.12);font-weight:600}
.bk-toc__item b{flex:none;min-width:18px;font-family:var(--f-mono);font-size:.78rem;color:var(--k-accent)}
.bk-toc__item.is-read b{color:var(--k-alert)}
.bk-toc__item.is-read a::after{content:"";flex:none;margin-inline-start:auto;width:6px;height:6px;border-radius:50%;background:var(--k-alert);align-self:center}

/* ---------- فاتحة الباب + رأس الفصل ---------- */
.bk-part{position:relative;padding:34px 0 26px;margin-bottom:26px;border-bottom:1px solid var(--k-line)}
.bk-part__ghost{position:absolute;inset-inline-start:-6px;top:-26px;font-size:7.5rem;font-weight:700;line-height:1;color:var(--k-ink);opacity:.07;letter-spacing:-.04em;pointer-events:none}
.bk-part__kicker{position:relative;font-size:.76rem;font-weight:600;letter-spacing:.2em;color:var(--k-accent);margin-bottom:6px}
.bk-part__title{position:relative;font-size:clamp(1.5rem,3.4vw,2rem);font-weight:800;color:var(--k-ink)}

.bk-head{margin-bottom:30px;padding-bottom:22px;border-bottom:1px solid var(--k-line)}
.bk-head__badge{display:flex;align-items:center;gap:12px;margin-bottom:16px;font-size:.74rem;font-weight:600;letter-spacing:.2em;color:var(--k-muted)}
.bk-head__badge b{display:grid;place-items:center;width:44px;height:44px;border-radius:10px;background:var(--k-accent);color:#06121f;font-size:1.25rem;letter-spacing:0}
.bk-head__title{font-size:clamp(1.75rem,4.4vw,2.6rem);font-weight:900;color:var(--k-ink);line-height:1.35}
.bk-head__meta{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;margin-top:14px;font-size:.85rem;color:var(--k-muted)}
.bk-head__jump{display:inline-flex;align-items:center;gap:6px;color:var(--k-accent);font-weight:600}
.bk-head__jump svg{width:14px;height:14px}

/* ---------- المتن ---------- */
.bk-body{font-size:var(--k-fs);line-height:2;color:var(--k-body)}
.bk-body p{margin:0 0 .95em}
.bk-body strong,.bk-body b{color:var(--k-ink);font-weight:700}
.bk-body .tt{unicode-bidi:isolate;direction:ltr;font-weight:500;font-size:.95em;color:var(--k-tt);letter-spacing:.1px}
.bk-body .tt[data-g]{cursor:help;border-bottom:1px dashed currentColor;transition:color .2s}
.bk-body .tt[data-g]:hover,.bk-body .tt[data-g]:focus-visible{color:var(--k-accent);outline:none}

.bk-body p.lead{font-size:1.1em;font-weight:500;color:var(--k-ink)}
.bk-body p.lead::before{content:"";display:block;width:56px;height:3px;border-radius:3px;background:var(--k-accent);margin-bottom:16px}

.bk-body h2.h2{font-family:var(--f-display);font-size:1.5em;font-weight:800;line-height:1.5;color:var(--k-ink);margin:1.9em 0 .6em;scroll-margin-top:100px}
.bk-body h3.h3{font-size:1.14em;font-weight:700;color:var(--k-accent);margin:1.5em 0 .5em}
.bk-body .h2--mk,.bk-body .h3--q{display:flex;align-items:center;gap:12px}
.bk-body .h3--q .qn{flex:none;display:grid;place-items:center;width:30px;height:30px;border-radius:8px;background:var(--k-accent);color:#06121f;font-family:var(--f-mono);font-size:.9rem}

.mk-dot,.mk-square,.mk-tri{flex:none;display:inline-block}
.mk-dot{width:11px;height:11px;border-radius:50%;background:var(--k-ink)}
.mk-square{width:11px;height:11px;background:var(--k-alert)}
.mk-tri{width:0;height:0;border-left:6px solid transparent;border-right:6px solid transparent;border-bottom:11px solid var(--k-accent)}

.bk-body .keyq{margin:1.5em 0;padding:4px 20px 4px 0;border-right:3px solid var(--k-muted);font-size:1.08em;font-weight:500;line-height:1.85;color:var(--k-ink)}

/* القاعدة */
.bk-body .rule-box{position:relative;display:flex;gap:22px;align-items:flex-start;margin:1.7em 0;padding:24px 26px;border-radius:var(--r);background:var(--k-rule);color:#fff;border:1px solid rgba(56,189,248,.28);box-shadow:0 26px 50px -34px rgba(56,189,248,.55);overflow:hidden;font-variant-numeric:tabular-nums}
.bk-body .rule-box::before{content:"";position:absolute;inset:0 0 auto 0;height:2px;background:linear-gradient(270deg,var(--accent),var(--gold))}
.rule-box__n{flex:none;text-align:center;padding-left:22px;border-left:1px solid rgba(255,255,255,.22)}
.rule-box__n .k{display:block;font-size:.68rem;letter-spacing:.16em;color:#9FB6CF;margin-bottom:4px}
.rule-box__n .v{display:block;font-family:var(--f-mono);font-size:2.3rem;font-weight:700;line-height:1;color:var(--gold)}
.rule-box__t{flex:1;font-size:1.08em;font-weight:600;line-height:1.85}
.bk-body .rule-box .tt{color:#BBD3EA}
.bk-share{position:absolute;inset-inline-end:10px;bottom:8px;display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:99px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.06);color:#cfe0f2;font:600 .72rem var(--f-body);cursor:pointer;transition:background .2s,color .2s}
.bk-share:hover{background:rgba(255,255,255,.14);color:#fff}
.bk-share svg{width:12px;height:12px}

/* صندوقا ■ / ▲ */
.bk-body .box{margin:1.5em 0;border-radius:var(--r-sm);transition:box-shadow .3s,border-color .3s}
.box__label{display:flex;align-items:center;gap:10px;font-size:.8rem;font-weight:700;letter-spacing:.1em;margin-bottom:8px}
.box__body{font-size:.96em;line-height:1.95}
.box--biz{background:rgba(245,184,65,.07);border-right:4px solid var(--k-alert);padding:18px 20px}
.box--biz .box__label{color:var(--k-alert)}
.box--pro{background:var(--k-card);border:1px solid var(--k-line);border-top:4px solid var(--k-accent);padding:17px 20px 18px}
.box--pro .box__label{color:var(--k-accent)}
.box--legend{margin:.8em 0!important}
.box--legend .box__body{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
html[data-bk-theme="paper"] .box--biz{background:#F7F2E8}

/* الصندوق اللي مش بتاع القارئ بيتطوي (يتفتح بضغطة) */
html[data-bk-role="biz"] .bk-body .box--pro:not(.box--legend):not(.is-open) .box__body,
html[data-bk-role="pro"] .bk-body .box--biz:not(.box--legend):not(.is-open) .box__body{display:none}
html[data-bk-role="biz"] .bk-body .box--pro:not(.box--legend) .box__label,
html[data-bk-role="pro"] .bk-body .box--biz:not(.box--legend) .box__label{cursor:pointer;margin-bottom:0}
html[data-bk-role="biz"] .bk-body .box--pro:not(.box--legend) .box__label::after,
html[data-bk-role="pro"] .bk-body .box--biz:not(.box--legend) .box__label::after{content:"+";margin-inline-start:auto;font-size:1.2rem;line-height:1;letter-spacing:0}
html[data-bk-role="biz"] .bk-body .box--pro.is-open .box__label,
html[data-bk-role="pro"] .bk-body .box--biz.is-open .box__label{margin-bottom:8px}
html[data-bk-role="biz"] .bk-body .box--pro.is-open .box__label::after,
html[data-bk-role="pro"] .bk-body .box--biz.is-open .box__label::after{content:"−"}
html[data-bk-role="biz"] .bk-body .box--biz:not(.box--legend){box-shadow:0 0 0 1px var(--k-alert),0 24px 46px -34px var(--k-alert)}
html[data-bk-role="pro"] .bk-body .box--pro:not(.box--legend){border-color:var(--k-accent);box-shadow:0 24px 46px -34px var(--k-accent)}

/* القوائم */
.bk-body ul,.bk-body ol{list-style:none;margin:1em 0 1.2em;padding:0}
.bk-body ul.bul li{position:relative;padding-right:24px;margin-bottom:.7em}
.bk-body ul.bul li::before{content:"";position:absolute;right:2px;top:.82em;width:8px;height:8px;background:var(--k-accent)}
.bk-body ul.deflist li,.bk-body ul.checklist li{display:flex;gap:14px;align-items:flex-start;margin-bottom:.8em}
.bk-body .deflist .dot{flex:none;width:8px;height:8px;margin-top:.82em;border-radius:50%;background:var(--k-accent)}
.bk-body .checklist .chk{flex:none;width:22px;height:22px;margin-top:.42em;border:2px solid var(--k-accent);border-radius:6px;background:transparent;cursor:pointer;transition:background .2s;position:relative}
.bk-body .checklist li.is-on .chk{background:var(--k-accent)}
.bk-body .checklist li.is-on .chk::after{content:"";position:absolute;inset:3px 6px 6px 6px;border:solid #06121f;border-width:0 2px 2px 0;transform:rotate(45deg)}
.bk-body .txt{flex:1}
.bk-body ol.numbered{counter-reset:n}
.bk-body ol.numbered li{position:relative;padding-right:38px;margin-bottom:.8em;counter-increment:n}
.bk-body ol.numbered li::before{content:counter(n);position:absolute;right:0;top:.28em;width:26px;height:26px;display:grid;place-items:center;border-radius:7px;border:1px solid var(--k-accent);color:var(--k-accent);font:600 .82rem var(--f-mono)}

/* الخلاصة + طبّق الآن */
.bk-body .summary{margin:.6em 0 1.6em;padding:20px 22px 8px;border-radius:var(--r-sm);background:var(--k-card);border:1px solid var(--k-line)}
.bk-body .apply{margin:1.8em 0 0;border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--k-line);background:var(--k-card-2)}
.apply__bar{display:flex;align-items:center;gap:10px;padding:10px 20px;background:var(--k-accent);color:#06121f;font-size:.82rem;font-weight:700;letter-spacing:.12em}
.apply__bar .arrow{width:0;height:0;border-top:6px solid transparent;border-bottom:6px solid transparent;border-right:9px solid currentColor}
.apply__body{padding:18px 20px 6px;font-size:.97em}
html[data-bk-theme="paper"] .apply__bar,html[data-bk-theme="paper"] .bk-body .h3--q .qn,html[data-bk-theme="paper"] .bk-head__badge b{color:#fff}

/* المخططات: مرسومة لورق فاتح، فبتفضل على بطاقة فاتحة في الوضعين */
.bk-body .diagram{margin:1.6em 0;padding:20px 18px;border-radius:var(--r-sm);background:#fff;border:1px solid var(--k-line);overflow-x:auto}
.bk-body .diagram svg{display:block;width:100%;min-width:500px;height:auto}
.bk-body .diagram svg text{font-family:var(--f-body)}
.bk-js .diagram:not(.seen) svg > *{opacity:0}
.diagram.seen svg > *{animation:bkDraw .5s var(--ease-out) both;animation-delay:calc(var(--i,0) * 30ms)}
@keyframes bkDraw{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* الجداول */
.bk-body .bk-table{overflow-x:auto;margin:1.4em 0}
.bk-body table.sheet{width:100%;border-collapse:collapse;font-size:.95em;font-variant-numeric:tabular-nums}
.bk-body table.sheet th{text-align:right;padding:10px 14px;background:var(--k-accent);color:#06121f;font-weight:700}
.bk-body table.sheet td{padding:10px 14px;border-bottom:1px solid var(--k-line)}
.bk-body table.sheet td:last-child{color:var(--k-muted);white-space:nowrap}
html[data-bk-theme="paper"] .bk-body table.sheet th{color:#fff}

/* القواعد الذهبية */
.bk-body .goldpage{margin-top:2em;padding:6px 24px 14px;border-radius:var(--r);background:var(--k-card);border:1px solid var(--k-line)}
.bk-body ol.gold li{display:flex;gap:14px;align-items:baseline;padding:11px 0;border-bottom:1px solid var(--k-line)}
.bk-body ol.gold li:last-child{border-bottom:0}
.bk-body ol.gold .gn{flex:none;min-width:26px;font-family:var(--f-mono);font-weight:700;color:var(--k-alert)}
.bk-body ol.gold .gt{flex:1;font-size:.96em;line-height:1.8;color:var(--k-ink)}

/* ---------- القاموس ---------- */
.bk-gsearch{position:sticky;top:76px;z-index:5;margin:0 -12px 26px;padding:12px;border-radius:var(--r);background:var(--k-card);border:1px solid var(--k-line);box-shadow:0 22px 40px -30px rgba(0,0,0,.7)}
.bk-gsearch input{width:100%;padding:12px 16px;border-radius:11px;border:1px solid var(--k-line);background:transparent;color:var(--k-ink);font:inherit;outline:none;transition:border-color .2s}
.bk-gsearch input:focus{border-color:var(--k-accent)}
.bk-gsearch__count{font-size:.8rem;color:var(--k-muted);margin-top:8px;min-height:1.4em}
.bk-gsearch__groups{display:flex;gap:6px;overflow-x:auto;padding-top:6px;scrollbar-width:none}
.bk-gsearch__groups button{flex:none;padding:5px 12px;border-radius:99px;border:1px solid var(--k-line);background:transparent;color:var(--k-muted);font:600 .78rem var(--f-body);cursor:pointer;transition:all .2s}
.bk-gsearch__groups button[aria-pressed="true"]{border-color:var(--k-accent);color:var(--k-accent);background:rgba(56,189,248,.1)}
.bk-body h2.gl-group{font-family:var(--f-display);font-size:1.35em;font-weight:800;color:var(--k-ink);margin:2em 0 1em;padding-bottom:10px;border-bottom:2px solid var(--k-accent);scroll-margin-top:230px}
.bk-body .gl{margin-bottom:14px;padding:16px 18px;border-radius:var(--r-sm);background:var(--k-card);border:1px solid var(--k-line);scroll-margin-top:230px;transition:border-color .3s}
.bk-body .gl:target{border-color:var(--k-accent)}
.gl__term{direction:ltr;unicode-bidi:isolate;display:inline-block;font-family:var(--f-mono);font-size:1.02em;font-weight:600;color:var(--k-ink);margin-bottom:4px}
.gl__def{font-size:.96em;line-height:1.9}
.gl__why{margin-top:10px;padding-right:14px;border-right:2px solid var(--k-accent);font-size:.92em;line-height:1.85}
.gl__why b{color:var(--k-accent)}
.bk-body [hidden]{display:none!important}

/* بطاقة تعريف المصطلح */
.bk-pop{position:absolute;z-index:70;width:min(360px,calc(100vw - 32px));padding:16px 18px;border-radius:var(--r);background:#0F1A2E;border:1px solid rgba(56,189,248,.4);box-shadow:0 30px 60px -24px rgba(0,0,0,.9);color:#C7D0DE;font-size:.92rem;line-height:1.85;animation:bkPop .22s var(--ease-out)}
.bk-pop[hidden]{display:none}
.bk-pop h3{font-family:var(--f-mono);font-size:1rem;color:#fff;direction:ltr;text-align:right;margin-bottom:6px}
.bk-pop .tt{direction:ltr;unicode-bidi:isolate;color:#A5DDFA}
.bk-pop__why{margin-top:10px;padding-right:12px;border-right:2px solid var(--accent)}
.bk-pop__why b{color:var(--accent)}
.bk-pop a{display:inline-block;margin-top:10px;font-size:.82rem;font-weight:600;color:var(--accent)}
@keyframes bkPop{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---------- بوابة التسجيل ---------- */
.bk-js:not(.bk-open) .bk-gated{max-height:340px;overflow:hidden;pointer-events:none;user-select:none;-webkit-mask-image:linear-gradient(#000 0,rgba(0,0,0,.5) 45%,transparent 92%);mask-image:linear-gradient(#000 0,rgba(0,0,0,.5) 45%,transparent 92%)}
.bk-js:not(.bk-open) .bk-done,.bk-js:not(.bk-open) .bk-head__jump{display:none}
html:not(.bk-js) .bk-wall:not(.bk-wall--home),.bk-open .bk-wall:not(.bk-wall--home){display:none}
.bk-wall{position:relative;z-index:2;margin-top:-90px;scroll-margin-top:110px}
.bk-form{position:relative;padding:30px 30px 24px;border-radius:var(--r-lg);background:linear-gradient(180deg,rgba(56,189,248,.07),rgba(56,189,248,0) 46%),#0F1A2E;border:1px solid rgba(56,189,248,.34);box-shadow:0 40px 80px -40px rgba(0,0,0,.95),0 0 0 6px rgba(56,189,248,.05);color:#C7D0DE}
.bk-form__kicker{display:inline-block;padding:2px 12px;border-radius:99px;background:var(--gold-soft);color:var(--gold);font-size:.76rem;font-weight:700;margin-bottom:10px}
.bk-form__title{font-family:var(--f-display);font-size:1.7rem;font-weight:900;color:#fff;line-height:1.4}
.bk-form__lead{margin:6px 0 20px;font-size:.98rem;line-height:1.85}
.bk-form__row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.bk-field span,.bk-roles legend{display:block;font-size:.82rem;font-weight:600;color:#96A2B6;margin-bottom:6px}
.bk-field input{width:100%;padding:13px 16px;border-radius:12px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.04);color:#fff;font:500 1rem var(--f-body);outline:none;transition:border-color .2s,box-shadow .2s}
.bk-field input[type="tel"]{font-family:var(--f-mono);text-align:left}
.bk-field input:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(56,189,248,.14)}
.bk-field input.is-bad{border-color:#f87171}
.bk-roles{border:0;margin:16px 0 20px}
.bk-roles label{display:inline-block;margin:0 0 6px 6px;cursor:pointer}
.bk-roles input{position:absolute;opacity:0}
.bk-roles span{display:inline-block;padding:7px 16px;border-radius:99px;border:1px solid rgba(255,255,255,.14);color:#C7D0DE;font-size:.88rem;font-weight:600;transition:all .2s}
.bk-roles input:checked + span{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}
.bk-roles input:focus-visible + span{outline:2px solid var(--accent);outline-offset:2px}
.bk-form .btn{width:100%;justify-content:center;padding:14px 22px;font-size:1.02rem}
.bk-form .btn[disabled]{opacity:.6;pointer-events:none}
.bk-form__msg{min-height:1.5em;margin-top:10px;font-size:.88rem;color:#fca5a5}
.bk-form__note{font-size:.78rem;color:#7C89A3}
.bk-form__note a{color:#96A2B6;text-decoration:underline}

/* ---------- نهاية الفصل ---------- */
.bk-done{margin-top:22px}
.bk-done__btn{display:inline-flex;align-items:center;gap:12px;padding:11px 18px;border-radius:12px;border:1px solid var(--k-line);background:transparent;color:var(--k-ink);font:600 .95rem var(--f-body);cursor:pointer;transition:border-color .2s,background .2s}
.bk-done__box{display:grid;place-items:center;width:24px;height:24px;border-radius:7px;border:2px solid var(--k-accent);color:transparent;transition:all .25s}
.bk-done__box svg{width:14px;height:14px}
.bk-done__btn[aria-pressed="true"]{border-color:var(--k-accent);background:rgba(56,189,248,.08)}
.bk-done__btn[aria-pressed="true"] .bk-done__box{background:var(--k-accent);color:#06121f}
.bk-end{height:1px}
.bk-pager{margin-top:46px}
.bk-pager__where{font-size:.84rem;color:var(--k-muted);margin-bottom:10px}
.bk-pager__where b{color:var(--k-ink)}
.bk-pager__next{position:relative;display:block;padding:22px 24px 20px;border-radius:var(--r-lg);background:linear-gradient(135deg,rgba(56,189,248,.16),rgba(56,189,248,.03) 60%),var(--k-card);border:1px solid var(--k-accent);box-shadow:0 30px 56px -38px var(--k-accent);transition:transform .3s var(--ease),box-shadow .3s}
.bk-pager__next:hover{transform:translateY(-4px);box-shadow:0 36px 60px -34px var(--k-accent)}
.bk-pager__label{display:block;font-size:.8rem;font-weight:700;letter-spacing:.06em;color:var(--k-accent);margin-bottom:4px}
.bk-pager__next strong{display:block;font-family:var(--f-display);font-size:clamp(1.25rem,3.2vw,1.6rem);font-weight:800;line-height:1.5;color:var(--k-ink)}
.bk-pager__go{display:inline-flex;align-items:center;gap:8px;margin-top:12px;font-size:.86rem;font-weight:600;color:var(--k-muted)}
.bk-pager__go svg{width:18px;height:18px;color:var(--k-accent);transition:transform .3s var(--ease)}
.bk-pager__next:hover .bk-pager__go svg{transform:translateX(-6px)}
.bk-pager__row{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:14px}
.bk-pager__back{display:flex;align-items:center;gap:12px;min-width:0;font-size:.9rem;font-weight:600;color:var(--k-muted);transition:color .2s}
.bk-pager__back:hover{color:var(--k-ink)}
.bk-pager__back small{display:block;font-size:.74rem;font-weight:500;color:var(--k-muted)}
.bk-pager__arrow{flex:none;display:grid;place-items:center;width:36px;height:36px;border-radius:50%;border:1px solid var(--k-line)}
.bk-pager__arrow svg{width:15px;height:15px;transform:scaleX(-1)}
.bk-pager__all{flex:none;padding:8px 16px;border-radius:99px;border:1px solid var(--k-line);font-size:.84rem;font-weight:600;color:var(--k-ink);transition:border-color .2s,color .2s}
.bk-pager__all:hover{border-color:var(--k-accent);color:var(--k-accent)}
.bk-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;margin-top:22px;padding:20px 22px;border-radius:var(--r);border:1px dashed var(--k-line)}
.bk-cta p{font-weight:600;color:var(--k-ink)}

/* ---------- شريط الأدوات ---------- */
.bk-dock{position:fixed;z-index:55;bottom:16px;left:50%;transform:translateX(-50%);display:flex;gap:4px;align-items:center;max-width:calc(100vw - 20px);padding:5px;border-radius:99px;background:rgba(13,20,34,.94);border:1px solid var(--line-2);box-shadow:0 22px 44px -18px rgba(0,0,0,.9);overflow-x:auto;scrollbar-width:none}
.bk-dock__btn{flex:none;padding:7px 13px;border-radius:99px;border:0;background:transparent;color:#C7D0DE;font:600 .82rem var(--f-body);cursor:pointer;white-space:nowrap;transition:background .2s,color .2s}
.bk-dock__btn:hover{background:rgba(255,255,255,.08);color:#fff}
.bk-dock__btn[aria-pressed="true"]{background:var(--accent-soft);color:var(--accent)}
.bk-dock__toc{display:none;background:var(--accent);color:#06121f}
.bk-dock__toc:hover{background:var(--accent);color:#06121f}
.bk-dock__roles{display:flex;gap:2px;padding-inline-start:6px;margin-inline-start:2px;border-inline-start:1px solid var(--line-2)}
.bk-dock__night,html[data-bk-theme="paper"] .bk-dock__paper{display:none}
html[data-bk-theme="paper"] .bk-dock__night{display:inline}

/* ============================================================
   صفحة الكتاب
   ============================================================ */
.bk-hero{padding-bottom:70px;overflow-x:clip}
.bk-hero__grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:60px;align-items:center}
.bk-hero__title{font-size:clamp(2.4rem,6.4vw,4.4rem);font-weight:900;line-height:1.22;margin:14px 0 18px;color:var(--ink)}
.bk-hero__sub{font-size:1.14rem;color:var(--muted);max-width:44ch;line-height:1.9}
.bk-hero__line{margin-top:10px;font-weight:700;color:var(--gold)}
.bk-hero__cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.bk-stats{display:flex;flex-wrap:wrap;gap:34px;list-style:none;margin-top:38px;padding-top:24px;border-top:1px solid var(--line)}
.bk-stats b{display:block;font-size:2rem;line-height:1.2;color:var(--ink)}
.bk-stats span{font-size:.85rem;color:var(--muted)}


.bk-sec-head{display:flex;flex-wrap:wrap;gap:10px 24px;align-items:flex-end;justify-content:space-between;margin-bottom:26px}
.bk-sec-head h2{font-size:clamp(1.7rem,4vw,2.4rem);font-weight:900}
.bk-sec-head p{color:var(--muted)}
.bk-progress{display:flex;align-items:center;gap:12px;font-size:.88rem}
.bk-progress .bk-meter{width:140px}

.bk-rows{list-style:none}
.bk-row a{display:flex;align-items:center;gap:16px;padding:14px 16px;border-radius:12px;transition:background .2s,transform .25s var(--ease)}
.bk-row a:hover{background:rgba(255,255,255,.05);transform:translateX(-4px)}
.bk-row + .bk-row{border-top:1px solid var(--line)}
.bk-row__n{flex:none;width:34px;height:34px;display:grid;place-items:center;border-radius:9px;background:var(--accent-soft);color:var(--accent);font-size:.92rem}
.bk-row__n:empty{background:transparent;border:1px dashed var(--line-2)}
.bk-row__t{flex:1;font-weight:600;color:var(--ink);line-height:1.6}
.bk-row__t .tt,.bk-rule__t .tt,.bk-pcard__title .tt,.bk-part__title .tt,.bk-head__title .tt,.bk-toc__list .tt,.bk-pager .tt{unicode-bidi:isolate;direction:ltr}
.bk-row__m{flex:none;font-size:.8rem;color:var(--dim)}
.bk-row__tick{flex:none;width:22px;height:22px;display:grid;place-items:center;border-radius:50%;border:1px solid var(--line-2);color:transparent;transition:all .3s}
.bk-row__tick svg{width:12px;height:12px}
.bk-row.is-read .bk-row__tick{background:var(--gold);border-color:var(--gold);color:#241a02}
.bk-rows--plain{margin:0 0 18px;border:1px solid var(--line);border-radius:var(--r);background:rgba(255,255,255,.015);padding:4px}
.bk-parts{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px}
.bk-pcard{position:relative;padding:26px 14px 10px;border-radius:var(--r-lg);background:var(--card);border:1px solid var(--line);overflow:hidden}
.bk-pcard__ghost{position:absolute;inset-inline-end:14px;top:-8px;font-size:6.4rem;font-weight:700;line-height:1;color:#fff;opacity:.05;pointer-events:none}
.bk-pcard__kicker{padding:0 16px;font-size:.74rem;font-weight:600;letter-spacing:.2em;color:var(--accent)}
.bk-pcard__title{padding:0 16px;margin:4px 0 14px;font-size:1.35rem;font-weight:800;line-height:1.5}

.bk-rules__grid{list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.bk-rule a{display:flex;gap:18px;height:100%;padding:20px;border-radius:var(--r);background:var(--card);border:1px solid var(--line);transition:border-color .3s,transform .3s var(--ease),box-shadow .3s}
.bk-rule a:hover{transform:translateY(-4px);border-color:var(--line-2)}
.bk-rule__n{flex:none;text-align:center;padding-left:16px;border-left:1px solid var(--line-2)}
.bk-rule__n span{display:block;font-size:.64rem;letter-spacing:.14em;color:var(--dim)}
.bk-rule__n b{display:block;font-size:1.9rem;line-height:1.2;color:var(--dim);transition:color .4s}
.bk-rule__t{font-size:.95rem;font-weight:600;line-height:1.85;color:var(--muted);transition:color .4s}
.bk-rule.is-read a{border-color:rgba(245,184,65,.45);box-shadow:0 24px 46px -34px rgba(245,184,65,.8)}
.bk-rule.is-read .bk-rule__n b{color:var(--gold)}
.bk-rule.is-read .bk-rule__t{color:var(--ink)}

.bk-wall--home{margin:0 auto;max-width:640px}
.bk-wall__open{display:none;text-align:center;padding:34px 24px;border-radius:var(--r-lg);border:1px solid rgba(245,184,65,.4);background:var(--gold-soft)}
.bk-wall__open p{font-size:1.5rem;font-weight:800}
.bk-wall__open .bk-hero__cta{justify-content:center}
.bk-open .bk-wall--home .bk-form{display:none}
.bk-open .bk-wall--home .bk-wall__open{display:block}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .bk-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .bk-main{margin-inline:auto;width:100%}
  .bk-side{position:fixed;inset:auto 0 0 0;z-index:58;top:auto;max-height:78vh;transform:translateY(105%);transition:transform .45s var(--ease-out);visibility:hidden}
  .bk-side.is-open{transform:none;visibility:visible}
  .bk-side__in{border-radius:22px 22px 0 0;padding-bottom:84px;background:#0F1A2E;box-shadow:0 -30px 60px -20px rgba(0,0,0,.9)}
  .bk-side{--k-ink:#EEF2F8;--k-muted:#96A2B6;--k-line:rgba(255,255,255,.13);--k-accent:#38BDF8;--k-alert:#F5B841}
  .bk-dock{z-index:59}
  .bk-dock__toc{display:block}
  .bk-hero__grid{grid-template-columns:1fr;gap:40px}
  .bk-cover-wrap{order:-1}
  .bk-cover{width:min(240px,62vw)}
  .bk-shot{width:min(280px,72vw)}
  .bk-parts{grid-template-columns:1fr}
}
@media(max-width:640px){
  .bk{--k-fs:1.04rem}
  .bk-form{padding:24px 18px 18px}
  .bk-form__row{grid-template-columns:1fr}
  .bk-form__title{font-size:1.4rem}
  .bk-body .rule-box{flex-direction:column;gap:12px;padding:20px 18px 40px}
  .rule-box__n{display:flex;align-items:baseline;gap:10px;padding:0 0 10px;border-left:0;border-bottom:1px solid rgba(255,255,255,.22);width:100%}
  .rule-box__n .v{font-size:1.7rem}
  .bk-gsearch{top:66px;margin-inline:0}
  .bk-stats{gap:22px}
  .bk-stats b{font-size:1.6rem}
  .bk-part__ghost{font-size:5.5rem}
  .bk-pop{position:fixed;inset:auto 10px 74px 10px!important;width:auto}
  .bk-dock__roles .bk-dock__btn{padding-inline:10px}
}
@media(prefers-reduced-motion:reduce){
  .bk-cover{animation:none}
  .bk-js .diagram:not(.seen) svg > *{opacity:1}
  .diagram.seen svg > *,.bk-pop{animation:none}
  .bk-side{transition:none}
}
.bk[data-bk-kind="glossary"] .bk-head__meta{display:none}