/* Consistent LexLearn back navigation and branded route transition */
.ll-back{appearance:none;border:1px solid rgba(17,29,49,.16);background:#fffdfb;color:#111D31;font:700 13px/1.3 Tahoma,Arial,sans-serif;border-radius:999px;box-shadow:0 5px 22px rgba(17,29,49,.12);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:42px;padding:9px 15px;white-space:nowrap;position:fixed;inset-inline-start:12px;top:calc(env(safe-area-inset-top,0px) + 90px);z-index:80}
.ll-back-icon{font-size:21px;line-height:1;display:inline-block}
.ll-back:hover{background:#F9F4EF}
.ll-back:focus-visible,.ll-transition-cancel:focus-visible{outline:3px solid #8A1F39;outline-offset:3px}
.ll-back-inline{position:static;inset:auto;box-shadow:none;min-height:38px;padding:7px 11px;z-index:auto}
.ll-navigating .ll-back:not(.ll-back-inline){z-index:150}
.ll-transition[hidden]{display:none!important}
.ll-transition{position:fixed;inset:0;z-index:130;display:grid;place-items:center;background:rgba(17,29,49,.94);padding:20px;isolation:isolate}
.ll-transition-panel{width:min(100%,370px);padding:36px 22px 28px;background:#F9F4EF;color:#111D31;border-radius:24px;text-align:center;box-shadow:0 28px 100px rgba(0,0,0,.18)}
.ll-transition-logo{height:125px;width:125px;margin:0 auto 12px;border-radius:50%;display:grid;place-items:center;border:1px solid rgba(138,31,57,.17);background:#fff9f3}
.ll-transition-logo img{display:block;width:108px;height:108px;object-fit:contain}
.ll-transition-name{display:block;direction:ltr;font:bold 27px/1.3 Arial,sans-serif;letter-spacing:-.8px}
.ll-transition-name span{color:#8A1F39}
.ll-transition-message{font:700 clamp(16px,2vw,19px)/1.65 Tahoma,Arial,sans-serif;margin:17px auto 15px;min-height:32px}
.ll-transition-bar{display:block;height:4px;max-width:190px;background:#e8dfe0;border-radius:10px;overflow:hidden;margin:0 auto 16px}
.ll-transition-bar i{display:block;width:42%;height:100%;background:#8A1F39;border-radius:10px;animation:lexlearn-route 1s ease-in-out infinite alternate}
.ll-transition-cancel{font:600 12px Tahoma,Arial,sans-serif;background:transparent;color:#586174;border:0;border-bottom:1px solid #b4abb0;padding:5px 9px;cursor:pointer}
@keyframes lexlearn-route{from{transform:translateX(-55%)}to{transform:translateX(195%)}}
@media(max-width:690px){.ll-back{top:calc(env(safe-area-inset-top,0px) + 84px);padding:8px 12px;font-size:12px}.ll-back-inline{top:auto;padding:7px 10px;font-size:12px;min-height:38px}.ll-transition-panel{padding:28px 20px 24px}.ll-transition-logo{height:110px;width:110px}.ll-transition-logo img{height:96px;width:96px}}
@media(prefers-reduced-motion:reduce){.ll-transition-bar i{animation:none;width:100%}}

/* On compact phone headers, keep the back arrow and language switch visible. */
@media(max-width:520px){
  .site-header .top-actions{gap:7px}
  .site-header #homeLink{display:none}
  .site-header .identity b{font-size:18px}
  .ll-back-inline .ll-back-label{display:none}
  .ll-back-inline{min-width:39px;padding:7px 10px}
}

/* Visible text instead of a lone arrow: Arabic «رجوع», English «Back». */
.ll-back-icon{display:none}
.ll-back{min-width:65px;padding-inline:14px}
.ll-back-inline .ll-back-label{display:inline!important}
@media(max-width:520px){
  .site-header .topbar{gap:6px;padding-inline:12px}
  .site-header .identity{gap:5px}
  .site-header .identity img{width:34px;height:34px}
  .site-header .identity b{font-size:16px}
  .site-header .top-actions{gap:6px}
  .site-header .lang-switch button{min-height:36px;padding:6px 8px;font-size:11px}
  .ll-back-inline{min-width:60px;padding:7px 9px;font-size:12px}
  .ll-back-inline .ll-back-label{display:inline!important}
}
@media(max-width:350px){
  .site-header .identity b{font-size:14px}
  .site-header .identity img{width:30px;height:30px}
  .site-header .lang-switch button{padding-inline:7px}
}

/* Copyright-safe research-paper visual: actual bibliographic titles, not pasted article pages.
   The papers are decorative; users can read cited sources in #science on conference.html. */
.ll-transition{overflow:hidden;background:radial-gradient(circle at 50% 38%,#24334a 0%,#111D31 76%)}
.ll-paper-field{position:absolute;inset:0;overflow:hidden;z-index:0;pointer-events:none;direction:ltr}
.ll-research-slip{position:absolute;width:clamp(215px,26vw,355px);padding:20px 21px;background:#F9F4EF;border-radius:5px;color:#111D31;border-top:7px solid #8A1F39;box-shadow:0 18px 70px #0005;display:grid;gap:8px;opacity:.58;overflow:hidden;direction:ltr;text-align:left;transform-origin:center}
.ll-research-slip:before{content:"";height:5px;display:block;background:repeating-linear-gradient(90deg,#9a9faa 0 15px,transparent 15px 20px);opacity:.35}
.ll-research-slip small{font:700 10px/1.4 Arial,sans-serif;color:#8A1F39;letter-spacing:.06em}
.ll-research-slip strong{font:700 clamp(13px,1.25vw,18px)/1.3 Georgia,serif;max-height:4.3em;overflow:hidden}
.ll-research-slip p{font:600 12px Arial,sans-serif;margin:0;color:#515e72}
.ll-research-slip em{font:italic 11px Georgia,serif;color:#667185;margin-top:3px}
.ll-paper-one{top:7%;left:4%;transform:rotate(-11deg)}
.ll-paper-two{top:19%;right:3%;transform:rotate(9deg)}
.ll-paper-three{bottom:4%;left:12%;transform:rotate(7deg)}
.ll-transition-panel{position:relative;z-index:1;border:1px solid #e9dde0}
.ll-transition-context{font:700 11px/1.5 Tahoma,Arial,sans-serif;color:#8A1F39;letter-spacing:.015em;margin:6px 0 4px}
.ll-transition-message{margin-top:11px}
@media(max-width:690px){
.ll-research-slip{width:210px;padding:13px 16px;gap:5px;opacity:.43}
.ll-research-slip strong{font-size:13px;max-height:3.9em}
.ll-research-slip small{font-size:8px}
.ll-paper-one{top:1%;left:-18%;transform:rotate(-9deg)}
.ll-paper-two{top:3%;right:-23%;transform:rotate(9deg)}
.ll-paper-three{bottom:-2%;left:17%;transform:rotate(7deg)}
.ll-transition-panel{width:min(100%,345px)}
}
@media(max-height:580px){.ll-research-slip{opacity:.2}.ll-paper-three{display:none}.ll-transition-panel{padding:18px 20px}.ll-transition-logo{height:90px;width:90px}.ll-transition-logo img{height:78px;width:78px}}
@media(prefers-reduced-motion:reduce){.ll-research-slip{transform:none}}

/* Short independent two-part quotations: readable in Arabic and English. */
.ll-learning-quote{margin:12px auto 4px;max-width:300px;min-height:78px;text-align:center}
.ll-learning-quote .ll-quote-main{font:800 clamp(17px,2.6vw,22px)/1.6 Tahoma,Arial,sans-serif;margin:0;color:#111D31;overflow-wrap:break-word}
.ll-learning-quote .ll-quote-main span{display:block}
.ll-learning-quote .ll-quote-main span+span{color:#8A1F39}
.ll-learning-quote .ll-quote-source{display:block;margin:9px 0 2px;font:600 10px/1.5 Tahoma,Arial,sans-serif;color:#606a7b}
.ll-transition-message{font-size:clamp(12px,1.7vw,14px);color:#5b6576;margin:15px auto 13px;min-height:auto}
@media(max-width:690px){.ll-learning-quote{max-width:270px}.ll-learning-quote .ll-quote-main{font-size:18px;line-height:1.65}.ll-learning-quote .ll-quote-source{font-size:10px}.ll-transition-message{font-size:12px}}
@media(max-height:580px){.ll-learning-quote{min-height:0;margin-top:6px}.ll-learning-quote .ll-quote-main{font-size:15px;line-height:1.35}.ll-learning-quote .ll-quote-source{margin-top:4px}.ll-transition-message{margin:8px auto}}

/* Investor visitor: rotating primary-sourced founder/investor insight. */
.ll-transition.ll-investor-mode .ll-transition-panel{width:min(100%,430px);padding:27px 24px 22px}
.ll-transition.ll-investor-mode .ll-paper-field{opacity:.22}
.ll-transition.ll-investor-mode .ll-transition-logo{width:100px;height:100px;margin-bottom:7px}
.ll-transition.ll-investor-mode .ll-transition-logo img{width:88px;height:88px}
.ll-investor-mode .ll-learning-quote{max-width:365px;min-height:165px;margin:10px auto 4px}
.ll-investor-mode .ll-learning-quote:before{content:"“";display:block;height:25px;color:#8A1F39;font:800 48px/1 Georgia,serif}
.ll-investor-eyebrow{font:800 10px/1.5 Tahoma,Arial,sans-serif;color:#8A1F39;letter-spacing:.03em}
.ll-investor-mode .ll-quote-main{font-size:clamp(19px,2.6vw,23px);line-height:1.5;margin:6px 0 11px}
.ll-investor-author{display:block;color:#111D31;font-size:14px;line-height:1.5}
.ll-investor-role{display:block;color:#657186;font:600 11px/1.5 Tahoma,Arial,sans-serif;margin:3px auto 7px}
.ll-investor-source{display:inline-block;font:600 11px/1.5 Tahoma,Arial,sans-serif;color:#8A1F39;text-decoration:underline;text-underline-offset:3px}
.ll-investor-source:focus-visible{outline:3px solid #8A1F39;outline-offset:3px}
.ll-investor-mode .ll-transition-message{font-size:12px;margin-top:12px}
@media(max-width:520px){.ll-transition.ll-investor-mode .ll-transition-panel{padding:19px 17px 17px}.ll-investor-mode .ll-learning-quote{min-height:0;margin-top:5px}.ll-investor-mode .ll-quote-main{font-size:19px;line-height:1.46}}
@media(max-height:650px){.ll-transition.ll-investor-mode .ll-transition-logo{height:72px;width:72px}.ll-transition.ll-investor-mode .ll-transition-logo img{height:62px;width:62px}.ll-investor-mode .ll-learning-quote:before{display:none}.ll-investor-mode .ll-quote-main{font-size:17px}.ll-investor-mode .ll-investor-role{font-size:10px}}

/* Keep quote transitions usable on small and short iPhones. */
.ll-transition{padding:max(12px,env(safe-area-inset-top,0px)) 12px max(12px,env(safe-area-inset-bottom,0px))}
.ll-transition-panel{max-height:calc(100dvh - 32px);overflow-y:auto;overscroll-behavior:contain}
@media(max-width:760px){
  .ll-back-inline{min-height:44px;min-width:70px;padding-inline:12px;font-size:13px;border-color:rgba(17,29,49,.25)}
  .ll-back-inline .ll-back-label{display:inline!important}
}
@media(max-width:355px){
  .ll-back-inline{min-width:65px;padding-inline:10px;font-size:12px}
  .ll-transition-panel{width:100%;border-radius:18px;padding:21px 15px}
  .ll-transition-name{font-size:24px}
  .ll-learning-quote{max-width:100%}
}
@media(max-height:560px){
  .ll-transition-panel{max-height:calc(100dvh - 20px)}
  .ll-transition-logo{width:70px;height:70px}
  .ll-transition-logo img{width:61px;height:61px}
  .ll-learning-quote .ll-quote-main{font-size:15px;line-height:1.4}
}