/* مِدماك · مبنى خطي يعلو بالتمرير
   الوضع الأساسي هنا (بلا JS أو بلا WebGL أو بحركة مخفّضة): طبقات ومخططات SVG ثابتة، مقروءة كاملة
   وفي .gl تصير الأقسام نصوصاً فوق مجسم ثابت في الخلفية، ويقرأ main.js المخططات نفسها من الصفحة */

:root{
  --ink:#0B0B0B;
  --white:#FFFFFF;
  --mark:#FF6A1A;
  --line:rgba(255,255,255,.28);
  --soft:rgba(255,255,255,.72);
  --ease:cubic-bezier(.16,1,.3,1);
  --edge:clamp(18px,4vw,64px);
  --hud:52px;
  --creditH:30px;
  --hf:'Alexandria','Readex Pro',sans-serif;
  --lat:'Manrope','Readex Pro',sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--ink);color:var(--white)}
html{scroll-behavior:auto}
body{font-family:'Readex Pro',system-ui,sans-serif;font-weight:400;line-height:1.7;overflow-x:clip;-webkit-tap-highlight-color:transparent}
h1,h2,h3,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
b{font-weight:600}
[dir=ltr]{font-family:var(--lat);unicode-bidi:isolate}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
.defs{position:absolute;inline-size:0;block-size:0;overflow:hidden}

/* ===== الشريط العلوي: المرحلة بلغة الخطوط نفسها ===== */
.hud{
  position:sticky;inset-block-start:0;z-index:30;block-size:var(--hud);padding-inline:var(--edge);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  background:var(--ink);border-block-end:1px solid var(--line);
}
.mark{font-family:var(--hf);font-weight:700;font-size:20px;line-height:1.3}
.status{display:flex;align-items:center;gap:12px;min-inline-size:0}
.st{font-size:13px;line-height:1.4;white-space:nowrap}
.st b{font-weight:600}
.segs{display:flex;gap:3px;inline-size:clamp(84px,14vw,180px)}
.segs i{flex:1;block-size:0;border-block-start:3px solid var(--white)}
.segs i.off{border-block-start:3px dashed rgba(255,255,255,.55)}
.segs.big{inline-size:100%;margin-block-start:14px;gap:5px}
.segs.big i{border-block-start-width:5px}

.rail,.tag,#stage,#labels{display:none}

/* ===== الوضع الثابت (الأساس) ===== */
main{position:relative}
section{padding-inline:var(--edge)}
.hero{min-block-size:calc(100vh - var(--hud));display:grid;align-items:center;gap:24px;padding-block:32px 72px}
h1{font-family:var(--hf);font-weight:700;font-size:min(24vw,30vh);line-height:1.3}
.sub{font-size:clamp(19px,1.1rem + .7vw,30px);line-height:1.55;max-inline-size:20em}
.cue{margin-block-start:16px;font-size:15px;color:var(--mark)}
.lic{display:grid;gap:2px;margin-block-start:18px}
.lic li{font-size:clamp(15px,.9rem + .25vw,18px);line-height:1.5}
.lic b{color:var(--mark);font-weight:700}
.lic.mini{display:flex;flex-wrap:wrap;gap:0 22px}
.lic.mini li{font-size:14px}
.licnote{font-size:13.5px;line-height:1.5;color:var(--soft)}
.axonbox{min-inline-size:0}
.axon{display:block;inline-size:100%;max-block-size:82vh}
.axon .f{fill:var(--ink);stroke:var(--white);stroke-width:1.5;stroke-linejoin:round}
.axon .fd{stroke-dasharray:6 5;stroke-opacity:.8}
.axon .l{stroke:var(--white);stroke-width:1}
.axon .ld{stroke-dasharray:3 3;stroke-opacity:.65}
.axon .now{fill:none;stroke:var(--mark);stroke-width:3.5}
.axon .lv{fill:var(--white);font-family:'Readex Pro',sans-serif;font-size:13px;text-anchor:end;direction:ltr}

.stop,.doc{padding-block:clamp(40px,8vh,88px)}
.stop{display:grid;gap:clamp(16px,3vw,40px);align-items:center;border-block-start:1px solid var(--line)}
.doc{border-block-start:1px solid var(--line)}
.kick{font-size:clamp(14px,.82rem + .2vw,16px);line-height:1.5;color:var(--mark);font-weight:500;margin-block-end:6px}
h2{font-family:var(--hf);font-weight:700;line-height:1.3;font-size:clamp(30px,1.2rem + 3.1vw,66px)}
.body{font-size:clamp(16px,.95rem + .3vw,21px);line-height:1.7;margin-block-start:10px;max-inline-size:32em}
.hint{font-size:14.5px;margin-block-start:10px;color:var(--mark)}
.meta{display:flex;flex-wrap:wrap;gap:6px 16px;margin-block-start:14px}
.meta li{font-size:14.5px;line-height:1.5;padding-block-start:6px;border-block-start:1px solid var(--white)}
.art{min-inline-size:0;overflow:hidden}
.plan{display:block;inline-size:100%}
.plan line{vector-effect:non-scaling-stroke;stroke:var(--white);stroke-width:1}
#p-G line.w,#p-A line.w,#p-B line.w,#p-R line.w{stroke-width:2}
#p-G line.t,#p-A line.t,#p-B line.t,#p-R line.t,#p-G line.a,#p-A line.a,#p-B line.a,#p-R line.a,#p-G line.g,#p-A line.g,#p-B line.g,#p-R line.g{stroke:rgba(255,255,255,.62);stroke-width:1;vector-effect:non-scaling-stroke}
#p-G line,#p-A line,#p-B line,#p-R line{stroke:var(--white);vector-effect:non-scaling-stroke}
#p-G line.d,#p-A line.d,#p-B line.d,#p-R line.d{stroke:var(--mark)}
#p-G text,#p-A text,#p-B text,#p-R text{fill:var(--white);font-family:'Readex Pro',sans-serif;font-size:.42px;text-anchor:middle;direction:rtl}
#p-G .dm,#p-A .dm,#p-B .dm,#p-R .dm{font-family:var(--lat);font-size:.36px}
#p-G .sm,#p-A .sm,#p-B .sm,#p-R .sm{font-size:.34px}
#p-G .dt,#p-A .dt,#p-B .dt,#p-R .dt{fill:var(--mark);font-size:.36px}
#p-G .code,#p-A .code,#p-B .code,#p-R .code{font-size:.46px;fill:rgba(255,255,255,.72)}

.phases{margin-block-start:18px;display:grid}
.phases li{display:grid;grid-template-columns:1.6em minmax(0,1fr) auto;gap:10px;align-items:baseline;padding-block:7px;border-block-start:2px solid var(--white);font-size:clamp(14.5px,.86rem + .2vw,17px);line-height:1.45}
.phases li.off{border-block-start:2px dashed rgba(255,255,255,.55)}
.phases b{font-size:1em}
.phases em{font-style:normal;font-size:.88em;color:var(--soft);white-space:nowrap}
.legend{display:flex;flex-wrap:wrap;gap:4px 18px;margin-block-start:10px;font-size:13.5px;color:var(--soft)}
.flow{margin-block-start:18px;display:grid;counter-reset:f}
.flow li{counter-increment:f;display:grid;gap:0 12px;grid-template-columns:2em minmax(0,1fr);padding-block:10px;border-block-start:1px solid var(--line)}
.flow li::before{content:counter(f);grid-row:span 2;font-family:var(--lat);font-weight:700;font-size:26px;line-height:1.2;color:var(--mark)}
.flow b{font-family:var(--hf);font-weight:600;font-size:clamp(17px,1rem + .3vw,21px);line-height:1.4}
.flow span{font-size:clamp(14.5px,.86rem + .2vw,17px);line-height:1.55;color:var(--soft)}
.note{margin-block-start:12px;font-size:13.5px;line-height:1.55;color:var(--soft)}

.units{margin-block-start:16px;display:grid;gap:3px}
.ur{display:grid;grid-template-columns:3.2em minmax(0,1fr);gap:6px;align-items:stretch}
.ul{display:flex;align-items:center;font-size:13.5px;line-height:1.3}
.uc{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:3px}
.head .uc span{font-size:12.5px;line-height:1.3;text-align:center;color:var(--soft);padding-block-end:4px}
.u{min-block-size:42px;padding:4px 2px;border:1px solid rgba(255,255,255,.6);font-size:clamp(12.5px,.74rem + .2vw,15px);line-height:1.3;text-align:center;transition:background-color .3s var(--ease),color .3s var(--ease)}
.u:focus-visible{outline:2px solid var(--mark);outline-offset:1px}
@media (hover:hover) and (pointer:fine){.u:hover{background:var(--white);color:var(--ink)}}

.final{padding-block-end:calc(var(--creditH) + 40px)}
.cta{
  display:inline-block;margin-block-start:18px;padding:15px 30px;background:var(--mark);color:var(--ink);
  font-family:var(--hf);font-weight:600;font-size:18px;line-height:1.4;text-decoration:none;
  transition:background-color .3s var(--ease),color .3s var(--ease);
}
.cta:focus-visible{outline:2px solid var(--white);outline-offset:3px}
@media (hover:hover) and (pointer:fine){.cta:hover{background:var(--white)}}

.credit{
  position:fixed;z-index:40;inset-block-end:0;inset-inline:0;block-size:var(--creditH);display:flex;align-items:center;justify-content:center;
  background:var(--ink);border-block-start:1px solid var(--line);color:var(--white);font-size:12.5px;line-height:1.3;text-decoration:none;
}
.credit:focus-visible{outline:2px solid var(--mark);outline-offset:-3px}

/* البديل الثابت: عمودان على الشاشات الواسعة */
@media (min-width:900px){
  .hero{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr)}
  h1{font-size:min(13vw,30vh)}
  html:not(.gl) .stop{grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr)}
  .found{grid-template-columns:minmax(0,1fr)}
}
/* الجوال: المخطط يكبر ويُزاح إلى الوحدة الجنوبية الشرقية فتنقرأ مقاساتها */
@media (max-width:899px){
  html:not(.gl) .plan{inline-size:220%;max-inline-size:none}
  html:not(.gl) .plan.crop{margin-block-start:-66%}
}

/* ===== وضع المجسم ===== */
.gl #stage{display:block;position:fixed;inset:0;inline-size:100%;block-size:100vh;z-index:0;touch-action:pan-y;opacity:0;transition:opacity .5s var(--ease)}
.gl.ready #stage{opacity:1}
.gl #labels{display:block;position:fixed;inset:0;z-index:2;pointer-events:none;overflow:hidden;direction:ltr}
.gl .art,.gl .axonbox{display:none}
.gl main{z-index:5;pointer-events:none}
.gl main a,.gl main button,.gl .panel{pointer-events:auto}
.gl .hero,.gl .stop,.gl .doc{border:0;background:none}
.gl .hero{display:block;padding:0;position:relative}

.lb{position:absolute;inset-block-start:0;inset-inline-start:0;white-space:nowrap;text-align:center;line-height:1.25;will-change:transform,opacity;font-size:12.5px;opacity:0;direction:ltr;unicode-bidi:plaintext}
.lb b{display:block;font-weight:500;font-size:13px;unicode-bidi:plaintext}
.lb i{display:block;font-style:normal;font-size:11.5px;color:var(--soft);unicode-bidi:plaintext}
.lb.dt{color:var(--mark);font-weight:500}
.lb.code{color:var(--soft);font-size:13px}
.lb.sm{font-size:11.5px;color:var(--soft)}
.lb.lvl{font-size:12px;color:var(--soft)}
.lb.now{color:var(--ink);background:var(--mark);padding:3px 9px;font-size:13px;font-weight:500}

.gl .rail{
  position:fixed;z-index:20;inset-inline-end:clamp(8px,1.2vw,20px);inset-block-start:calc(var(--hud) + 12px);display:grid;gap:3px;
  transition:opacity .3s var(--ease);
}
.gl .rail button{
  inline-size:38px;block-size:32px;display:grid;place-items:center;background:var(--ink);border:1px solid rgba(255,255,255,.6);
  font-family:var(--lat);font-size:13px;line-height:1;transition:background-color .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.gl .rail button[data-open-floor="0"],.gl .rail button[data-open-floor="6"]{font-family:'Readex Pro',sans-serif;font-size:11.5px}
.gl .rail button[data-open-floor="4"],.gl .rail button[data-open-floor="5"],.gl .rail button[data-open-floor="6"]{border-style:dashed}
.gl.alldone .rail button{border-style:solid}
.gl .rail button.at{background:var(--white);color:var(--ink);border-color:var(--white)}
.gl .rail button.open{background:var(--mark);color:var(--ink);border-color:var(--mark)}
.gl .rail button:focus-visible{outline:2px solid var(--mark);outline-offset:1px}
@media (hover:hover) and (pointer:fine){.gl .rail button:hover{background:var(--mark);color:var(--ink);border-color:var(--mark)}}
.gl.hide-rail .rail{opacity:0;pointer-events:none}

.gl .tag{
  display:flex;position:fixed;z-index:22;inset-inline:0;inset-block-end:var(--creditH);padding:12px var(--edge);
  align-items:center;justify-content:space-between;gap:14px;background:var(--ink);border-block-start:1px solid var(--white);
  opacity:0;pointer-events:none;transition:opacity .3s var(--ease);
}
.gl.manual .tag{opacity:1;pointer-events:auto}
.tag b{display:block;font-family:var(--hf);font-weight:700;font-size:clamp(20px,1rem + 1vw,30px);line-height:1.35}
.tag span{display:block;font-size:14px;line-height:1.5;color:var(--soft)}
.tag button{flex:none;padding:10px 16px;border:1px solid var(--white);font-size:14.5px;line-height:1.3;transition:background-color .25s var(--ease),color .25s var(--ease)}
.tag button:focus-visible{outline:2px solid var(--mark);outline-offset:2px}
@media (hover:hover) and (pointer:fine){.tag button:hover{background:var(--white);color:var(--ink)}}
.gl.manual main{visibility:hidden}

/* الجوال والتابلت الطولي: المجسم فوق والنص تحته */
.gl .hero{min-block-size:calc(100vh - var(--hud))}
.gl .hcopy{position:absolute;inset-inline:var(--edge);inset-block-end:calc(var(--creditH) + 16px)}
.gl h1{font-size:min(27vw,17vh)}
.gl .sub{font-size:clamp(17px,4.6vw,24px)}
.gl .stop{display:block;padding-block:0 62vh;min-block-size:185vh}
.gl .stop.short{min-block-size:165vh}
.gl .stop.long{min-block-size:240vh}
.gl .stop.final{min-block-size:170vh;padding-block-end:0}
.gl .stop .panel{
  position:sticky;inset-block-start:54vh;inset-block-start:54svh;
  margin-inline:calc(var(--edge) * -1);padding:14px var(--edge) calc(var(--creditH) + 12px);
  background:var(--ink);border-block-start:1px solid var(--white);
  max-block-size:46vh;max-block-size:46svh;overflow:hidden;
}
.gl .stop .panel h2{font-size:clamp(25px,7.4vw,44px);line-height:1.3}
.gl .stop .panel .kick{margin-block-end:2px}
.gl .stop .panel .body{font-size:clamp(15px,4vw,19px);line-height:1.6;margin-block-start:4px}
.gl .stop .panel .meta{margin-block-start:8px}
.gl .stop .panel .hint{margin-block-start:4px;font-size:13.5px}
.gl .stop.final .panel{max-block-size:none}
.gl .stop.final .lic{margin-block-start:6px;display:flex;flex-wrap:wrap;gap:0 18px}
.gl .stop.final .lic li{font-size:13.5px}
.gl .stop.final .cta{margin-block-start:10px;padding-block:11px}
.gl .doc{background:var(--ink);padding-block:clamp(40px,8vh,72px);position:relative}
.gl .doc:first-of-type{border-block-start:1px solid var(--white)}

/* الشاشات الواسعة: المجسم يساراً والنص يميناً، بلا خلفية للنص */
@media (min-aspect-ratio:5/4) and (min-width:640px){
  .gl .hcopy{inset-inline:var(--edge) auto;inset-block-end:auto;inset-block-start:50%;transform:translateY(-50%);inline-size:min(46vw,760px)}
  .gl h1{font-size:min(15.5vw,31vh)}
  .gl .sub{font-size:clamp(18px,1.9vw,30px)}
  .gl .stop .panel,.gl .doc .panel{
    margin-inline:0;padding:0;background:none;border:0;inline-size:min(38vw,600px);max-block-size:none;overflow:visible;
  }
  .gl .stop .panel{inset-block-start:24vh}
  .gl .stop .panel h2,.gl .doc .panel h2{font-size:clamp(30px,3.9vw,66px)}
  .gl .stop .panel .body{font-size:clamp(16px,1.35vw,21px);line-height:1.7;margin-block-start:10px}
  .gl .stop .panel .meta{margin-block-start:14px}
  .gl .stop .panel .kick{margin-block-end:6px}
  .gl .doc{background:none;min-block-size:130vh;padding-block:12vh;border:0}
  .gl .doc:first-of-type{border:0}
  .gl .doc .panel{position:sticky;inset-block-start:calc(var(--hud) + 3vh);background:var(--ink);padding:18px 22px;margin-inline-start:-22px}
  .gl .panel.wide{inline-size:min(44vw,720px)}
  .gl .rail{inset-block-start:50%;transform:translateY(-50%)}
  .gl .rail button{inline-size:42px;block-size:36px}
  .lb{font-size:13px}.lb b{font-size:14px}.lb i{font-size:12px}
}
@media (min-aspect-ratio:5/4) and (min-width:640px) and (max-height:560px){
  .gl .stop .panel{inset-block-start:calc(var(--hud) + 8px)}
  .gl .doc .panel{position:static}
  .gl .stop .panel h2{font-size:26px}
  .gl h1{font-size:64px}
  .gl .hcopy .lic,.gl .hcopy .licnote{display:none}
}

/* الشاشات القصيرة جداً على الجوال */
@media (max-height:680px) and (max-aspect-ratio:5/4){
  .gl h1{font-size:64px}
  .gl .hcopy .licnote{font-size:12.5px}
  .gl .stop .panel{padding-block-start:10px}
  .gl .stop .panel h2{font-size:23px}
  .gl .stop .panel .body{font-size:14.5px;line-height:1.55}
  .gl .stop .panel .meta{margin-block-start:5px}
  .gl .stop .panel .meta li{font-size:13px;padding-block-start:3px}
}
@media (max-width:420px){
  .st{font-size:12.5px}
  .mark{font-size:18px}
  .segs{inline-size:64px;gap:2px}
  .segs.big{inline-size:100%}
}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}