/* ===========================================================
   SPC — site menu (☰ in every header → full-screen blueprint panel)
   The panel is always dark (same in light and dark themes) and opens as a
   circle growing from the trigger's corner (end side: right in LTR, left in RTL).
   =========================================================== */

/* ---- trigger ---- */
.menu-btn{appearance:none;position:relative;display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:4px;
  width:42px;height:42px;padding:0;border:1px solid var(--line);border-radius:50%;background:color-mix(in oklab,var(--paper) 70%,transparent);
  color:var(--ink);cursor:pointer;flex:none;transition:border-color .3s,background-color .3s,transform .3s;}
.menu-btn span{display:block;width:16px;height:1.6px;border-radius:2px;background:currentColor;transition:transform .45s cubic-bezier(.16,1,.3,1),width .45s,opacity .3s;}
.menu-btn span:nth-child(2){width:11px;margin-inline-start:5px;}
.menu-btn:hover{border-color:var(--ink-faint);}
.menu-btn:hover span:nth-child(2){width:16px;margin-inline-start:0;}
.menu-btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.menu-btn.is-open span:nth-child(1){transform:translateY(5.6px) rotate(45deg);}
.menu-btn.is-open span:nth-child(2){opacity:0;}
.menu-btn.is-open span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg);}
.topbar.dark .menu-btn{color:#eef3f9;border-color:rgba(238,243,249,.22);background:rgba(8,12,18,.35);}

/* ---- panel ---- */
html{scrollbar-gutter:stable;}
html.menu-open,html.menu-open body{overflow:hidden;}
.smenu{
  --ink:#eef3f9;--ink-soft:#9fb2cd;--ink-faint:#5f7391;--line:rgba(238,243,249,.12);--bg:#0b0f15;--paper:#101721;--accent:#76d3ff;
  --o-x:calc(100% - 46px);--o-y:46px;
  position:fixed;inset:0;z-index:100;display:flex;flex-direction:column;overflow:hidden;
  background:radial-gradient(120% 90% at 85% 0%,#0f1a2a 0%,#070b12 60%);color:var(--ink);
  clip-path:circle(0px at var(--o-x) var(--o-y));visibility:hidden;
  transition:clip-path .75s cubic-bezier(.7,0,.2,1) .12s,visibility 0s linear .87s;
}
.smenu[dir="rtl"]{--o-x:46px;background:radial-gradient(120% 90% at 15% 0%,#0f1a2a 0%,#070b12 60%);}
.smenu.is-open{clip-path:circle(160vmax at var(--o-x) var(--o-y));visibility:visible;
  transition:clip-path 1s cubic-bezier(.65,0,.15,1),visibility 0s;}
.smenu-grid{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(118,211,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(118,211,255,.06) 1px,transparent 1px);
  background-size:56px 56px;-webkit-mask-image:radial-gradient(90% 80% at 50% 40%,#000 30%,transparent 100%);mask-image:radial-gradient(90% 80% at 50% 40%,#000 30%,transparent 100%);}

.smenu-top{position:relative;display:flex;align-items:center;justify-content:space-between;padding:clamp(16px,2.4vw,30px) var(--pad,clamp(20px,4vw,64px));}
.smenu-brand{display:inline-flex;color:var(--ink);font-size:clamp(22px,2.4vw,30px);}
.smenu-brand .brand-mark{height:1.05em;width:auto;display:block;}
.smenu-brand .brand-mark .bm-ink{fill:currentColor;}
.smenu-brand .brand-mark .bm-accent{fill:#2f9be0;}
.smenu-close{appearance:none;position:relative;width:46px;height:46px;border-radius:50%;border:1px solid rgba(238,243,249,.22);
  background:rgba(255,255,255,.03);color:var(--ink);cursor:pointer;transition:border-color .3s,background-color .3s,transform .45s cubic-bezier(.16,1,.3,1);}
.smenu-close span{position:absolute;left:50%;top:50%;width:18px;height:1.6px;border-radius:2px;background:currentColor;}
.smenu-close span:nth-child(1){transform:translate(-50%,-50%) rotate(45deg);}
.smenu-close span:nth-child(2){transform:translate(-50%,-50%) rotate(-45deg);}
.smenu-close:hover{border-color:var(--accent);background:rgba(118,211,255,.08);transform:rotate(90deg);}
.smenu-close:focus-visible,.smenu a:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}

.smenu-body{position:relative;flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,.85fr);
  gap:clamp(28px,6vw,110px);padding:clamp(8px,2vh,28px) var(--pad,clamp(20px,4vw,64px)) clamp(28px,6vh,64px);overflow-y:auto;
  overscroll-behavior:contain;align-items:end;}

/* main links */
.smenu-nav ol{list-style:none;margin:0;padding:0;border-top:1px solid var(--line);}
.smenu-nav > ol > li{border-bottom:1px solid var(--line);opacity:0;transform:translateY(18px);
  transition:opacity .22s ease,transform .3s ease;}
.smenu.is-open .smenu-nav > ol > li{opacity:1;transform:none;
  transition:opacity .6s ease,transform .9s cubic-bezier(.16,1,.3,1);transition-delay:calc(.32s + var(--i) * 60ms);}
.smenu-link{display:grid;grid-template-columns:auto 1fr auto;align-items:baseline;gap:clamp(12px,1.6vw,26px);padding:clamp(10px,1.5vh,16px) 0;color:var(--ink);text-decoration:none;}
.smenu-no{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--accent);opacity:.8;}
.smenu-text{display:flex;align-items:baseline;flex-wrap:wrap;gap:6px 18px;min-width:0;}
.smenu-label{font-family:var(--sans);font-weight:800;font-size:clamp(24px,2.88vw,45px);line-height:1.04;letter-spacing:-.02em;
  transition:color .3s,transform .45s cubic-bezier(.16,1,.3,1);}
.smenu-note{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--ink-faint);transition:color .3s;}
.smenu-arrow{font-style:normal;font-size:20px;color:var(--accent);opacity:0;transform:translate(-6px,6px);transition:opacity .3s,transform .4s cubic-bezier(.16,1,.3,1);}
.smenu-link:hover .smenu-label{color:var(--accent);transform:translateX(6px);}
.smenu-link:hover .smenu-note{color:var(--ink-soft);}
.smenu-link:hover .smenu-arrow{opacity:1;transform:none;}

/* the four sectors under "Sectors" */
/* filled column by column (01 02 | 03 04) so the sectors read in order down each column */
.smenu-sub{list-style:none;margin:0 0 clamp(12px,1.6vh,18px);padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:repeat(2,auto);grid-auto-flow:column;gap:2px 24px;
  padding-inline-start:calc(12px + clamp(12px,1.6vw,26px) + 2ch);}
.smenu-sub a{display:flex;gap:10px;align-items:baseline;padding:7px 0;font-size:14px;color:var(--ink-soft);text-decoration:none;transition:color .25s;}
.smenu-sub a b{font-family:var(--mono);font-weight:400;font-size:11px;color:var(--accent);opacity:.75;}
.smenu-sub a:hover{color:var(--ink);}

/* info column */
.smenu-aside{display:flex;flex-direction:column;gap:22px;padding-inline-start:clamp(20px,3vw,48px);border-inline-start:1px solid var(--line);
  opacity:0;transform:translateY(14px);transition:opacity .22s ease,transform .3s ease;}
.smenu.is-open .smenu-aside{opacity:1;transform:none;transition:opacity .6s ease .6s,transform .9s cubic-bezier(.16,1,.3,1) .6s;}
/* the top bar (logo + ✕) fades with the panel too */
.smenu-top{opacity:0;transition:opacity .25s ease;}
.smenu.is-open .smenu-top{opacity:1;transition:opacity .5s ease .25s;}
.smenu-kicker{font-family:var(--mono);font-size:11px;letter-spacing:.24em;color:var(--accent);}
.smenu-blurb{margin:0;font-size:clamp(15px,1.15vw,17px);line-height:1.7;color:var(--ink-soft);max-width:38ch;}
.smenu-contact{margin:0;display:grid;gap:12px;}
.smenu-contact div{display:grid;grid-template-columns:92px 1fr;gap:14px;align-items:baseline;}
.smenu-contact dt{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--ink-faint);}
.smenu-contact dd{margin:0;font-size:15px;line-height:1.55;color:var(--ink);}
.smenu-contact a{color:var(--ink);text-decoration:none;transition:color .25s;}
.smenu-contact a:hover{color:var(--accent);}
.smenu-cta{align-self:flex-start;display:inline-flex;align-items:center;gap:10px;padding:14px 26px;border-radius:40px;background:var(--accent);
  color:#06121d;font-weight:700;font-size:14px;text-decoration:none;transition:background-color .3s,transform .3s;}
.smenu-cta i{font-style:normal;transition:transform .35s;}
.smenu-cta:hover{background:#fff;}
.smenu-cta:hover i{transform:translate(2px,-2px);}
.smenu-tools{display:flex;align-items:center;gap:12px;padding-top:6px;}
.smenu-lang{display:inline-flex;align-items:center;height:36px;padding:0 16px;border:1px solid var(--line);border-radius:40px;
  font-size:13px;color:var(--ink);text-decoration:none;transition:border-color .25s,color .25s;}
.smenu-lang:hover{border-color:var(--accent);color:var(--accent);}
.smenu .theme-toggle{color:var(--ink);}
.smenu .tt-knob{background:var(--ink);}

/* Persian */
.smenu[dir="rtl"] .smenu-label{font-family:var(--morabba);font-weight:800;letter-spacing:normal;line-height:1.25;}
.smenu[dir="rtl"] .smenu-note,.smenu[dir="rtl"] .smenu-kicker,.smenu[dir="rtl"] .smenu-contact dt{font-family:var(--fa);letter-spacing:normal;}
.smenu[dir="rtl"] .smenu-link:hover .smenu-label{transform:translateX(-6px);}
/* arrows point the reading way */
.smenu[dir="rtl"] .smenu-arrow{transform:scaleX(-1) translate(-6px,6px);}
.smenu[dir="rtl"] .smenu-link:hover .smenu-arrow{transform:scaleX(-1);}
.smenu[dir="rtl"] .smenu-cta i{transform:scaleX(-1);}
.smenu[dir="rtl"] .smenu-cta:hover i{transform:scaleX(-1) translate(2px,-2px);}
.smenu-brand{direction:ltr;}

/* tablet / phone: one column, links first */
@media (max-width:860px){
  .smenu-body{grid-template-columns:1fr;align-items:start;gap:30px;}
  .smenu-aside{padding-inline-start:0;border-inline-start:0;border-top:1px solid var(--line);padding-top:26px;}
}
@media (max-width:600px){
  .smenu-top{padding:12px 14px;}
  .smenu-brand{font-size:19px;}
  .smenu-close{width:40px;height:40px;}
  .smenu{--o-x:calc(100% - 34px);--o-y:30px;}
  .smenu[dir="rtl"]{--o-x:34px;}
  .smenu-body{padding:6px 16px 32px;}
  .smenu-label{font-size:clamp(25px,7.4vw,34px);}
  .smenu-note{display:none;}
  .smenu-sub{grid-template-columns:1fr;grid-template-rows:none;grid-auto-flow:row;padding-inline-start:calc(12px + 14px + 2ch);}
  .smenu-contact div{grid-template-columns:76px 1fr;}
  .menu-btn{width:36px;height:36px;}
}
@media (max-width:380px){ .menu-btn{width:34px;height:34px;} }

@media (prefers-reduced-motion:reduce){
  .smenu,.smenu.is-open{clip-path:none;transition:opacity .2s,visibility 0s linear .2s;opacity:0;}
  .smenu.is-open{opacity:1;transition:opacity .2s;}
  .smenu-nav > ol > li,.smenu-aside{transition:none!important;opacity:1;transform:none;}
}