/* Forte Securities — shared design-system base.
   Tokens, reset, header, footer, nav overlay, buttons, theme toggle, dark theme.
   Common to every page; edit here once. Page-specific CSS stays inline per page. */

@font-face{font-family:'Montserrat';src:url('fonts/montserrat.woff2') format('woff2');font-weight:100 900;font-style:normal;font-display:swap}

/* ============================================================
   FORTE SECURITIES — LANDING PoC v2 (brand-aligned)
   Palette extracted from supplied logo assets:
   indigo #2B2A6E · ink #1E1433 · royal #3A66A8
   steel #6696B4 · seafoam #79B1B6
   ============================================================ */
:root{
  --indigo:#2B2A6E;
  --indigo-deep:#232258;
  --ink:#1E1433;
  --ink-2:#160E27;
  --royal:#3A66A8;
  --steel:#6696B4;
  --teal:#79B1B6;
  --teal-bright:#8FC6C9;
  --paper:#FFFFFF;
  --paper-2:#F6F7FA;
  --text:#23223D;
  --text-soft:#5A5975;
  --line:rgba(43,42,110,.16);
  --line-strong:rgba(43,42,110,.32);
  --line-dark:rgba(255,255,255,.14);
  --max:1180px;
  --bar-h:34px;
  --head-h:74px;
}

*{margin:0;padding:0;box-sizing:border-box}

html{scroll-behavior:smooth}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}

body{
  font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.6;color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}

::selection{background:var(--teal);color:var(--ink)}

a{color:var(--indigo);text-decoration:none}

a:hover{text-decoration:underline;text-underline-offset:3px}

:focus-visible{outline:2px solid var(--royal);outline-offset:3px;border-radius:2px}

.wrap{max-width:var(--max);margin:0 auto;padding:0 28px}

.mono{font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif}

/* ---------- display type ---------- */
.display{
  font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.06;
  color:var(--indigo);
}

.eyebrow{
  font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;
  font-size:11.5px;font-weight:500;
  letter-spacing:.22em;text-transform:uppercase;
  color:var(--steel);
}

.section-head{display:flex;align-items:baseline;gap:18px;margin-bottom:14px;flex-wrap:wrap}

h2.display{font-size:clamp(26px,3.4vw,38px)}

.section-intro{max-width:680px;color:var(--text-soft);font-size:16.5px;margin-bottom:40px}

section{padding:84px 0;border-top:1px solid var(--line)}

section:first-of-type{border-top:none}

/* ---------- facet chip (logo-derived marker) ---------- */
.facet{width:13px;height:13px;transform:rotate(45deg);display:inline-block;flex:none}

.facet.t{background:var(--teal)}

.facet.s{background:var(--steel)}

.facet.r{background:var(--royal)}

.facet.i{background:var(--indigo)}

.facet.k{background:var(--ink)}

header.site .wrap{height:var(--head-h);display:flex;align-items:center;gap:36px}

body.nav-open header.site .logo-link{opacity:0;pointer-events:none}

nav.primary{display:flex;gap:30px;margin-left:auto}

nav.primary a{
  position:relative;padding-bottom:7px;
  font-size:13.5px;font-weight:500;color:var(--text);
  letter-spacing:.02em;
  transition:color .22s ease;
}

nav.primary a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--indigo),var(--royal),var(--steel),var(--teal),var(--steel),var(--royal),var(--indigo));
  background-size:300% 100%;
  transform:scaleX(0);transform-origin:left center;
  transition:transform .28s cubic-bezier(.4,0,.2,1);
}

nav.primary a:hover,nav.primary a:focus-visible{color:var(--indigo);text-decoration:none}

nav.primary a:hover::after,nav.primary a:focus-visible::after{
  transform:scaleX(1);
  animation:nav-sheen 3.2s ease-in-out .28s infinite;
}

nav.primary a[aria-current="page"]{color:var(--indigo)}

nav.primary a[aria-current="page"]::after{transform:scaleX(1)}

@keyframes nav-sheen{
  0%{background-position:0% 0}
  50%{background-position:100% 0}
  100%{background-position:0% 0}
}

@media (prefers-reduced-motion:reduce){
  nav.primary a:hover::after,nav.primary a:focus-visible::after{animation:none;transform:scaleX(1)}
}

.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;font-size:13.5px;font-weight:600;
  letter-spacing:.03em;padding:12px 22px;border:1px solid #2B2A6E;
  color:#2B2A6E;background:transparent;cursor:pointer;
  position:relative;z-index:0;overflow:hidden;border-radius:999px;
  transition:color .3s ease,border-color .3s ease;
}

.btn::before{content:"";position:absolute;inset:0;z-index:-1;background:#2B2A6E;transform:translateY(100%);transition:transform .4s cubic-bezier(.4,0,.2,1)}

.btn:hover{color:#fff;text-decoration:none}

.btn:hover::before{transform:translateY(0)}

.btn.solid{background:#2B2A6E;color:#fff}

.btn.solid::before{background:#79B1B6}

.btn.solid:hover{color:#1E1433;border-color:#79B1B6}

.btn.on-dark{border-color:rgba(255,255,255,.4);color:#fff}

.btn.on-dark::before{background:#2B2A6E}

.btn.on-dark:hover{color:#fff;border-color:#2B2A6E}

.btn.on-dark.solid{background:#79B1B6;border-color:#79B1B6;color:#1E1433;font-weight:600}

.btn.on-dark.solid::before{background:#2B2A6E}

.btn.on-dark.solid:hover{color:#fff;border-color:#2B2A6E}

@media (prefers-reduced-motion:reduce){.btn::before{transition:none}}

header.site .btn{padding:10px 18px}

@media (max-width:920px){nav.primary{display:none}}

.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:64px;align-items:center}

.hero .eyebrow{color:var(--teal-bright);margin-bottom:26px;display:flex;align-items:flex-start;gap:14px;flex-wrap:nowrap}

.hero .eyebrow .facet{margin-top:3px}

.hero h1{
  font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;
  font-weight:700;font-size:clamp(34px,4.6vw,58px);
  line-height:1.04;letter-spacing:-.015em;color:#fff;
  margin-bottom:26px;max-width:13ch;
}

.hero p.lede{font-size:17.5px;line-height:1.65;color:#C9CCDF;max-width:54ch;margin-bottom:38px}

.hero p.lede strong{color:#fff;font-weight:500}

.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- stat strip ---------- */
.stats{border-top:none;padding:0;background:var(--paper)}

.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);border-left:1px solid var(--line);border-right:1px solid var(--line)}

.stat{padding:34px 28px;border-right:1px solid var(--line)}

.stat:last-child{border-right:none}

.stat .n{font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;font-size:34px;font-weight:500;color:var(--indigo);line-height:1;margin-bottom:8px}

.stat .l{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--text-soft)}

.stat .src{font-size:10.5px;color:#9A99B0;margin-top:4px}

@media (max-width:860px){
  .stats .wrap{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:none}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
}

/* ---------- markets register table ---------- */
.table-scroll{overflow-x:auto;border:1px solid var(--line-strong)}

table.register{width:100%;border-collapse:collapse;min-width:760px;font-size:14px}

table.register th{
  font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;font-size:10.5px;font-weight:500;
  letter-spacing:.16em;text-transform:uppercase;color:#fff;
  background:var(--indigo);text-align:left;padding:13px 20px;
}

table.register td{padding:20px;border-top:1px solid var(--line);vertical-align:top}

table.register tr:hover td{background:var(--paper-2)}

td.desk .dname{display:flex;align-items:center;gap:12px;font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;font-weight:700;font-size:16px;color:var(--indigo)}

td.exec{white-space:nowrap}

.tag{
  display:inline-block;font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;font-size:10.5px;
  letter-spacing:.08em;color:var(--indigo);border:1px solid var(--line-strong);
  padding:4px 9px;margin:2px 4px 2px 0;background:var(--paper);
}

.table-note{font-size:12px;color:#9A99B0;margin-top:12px}

/* ---------- execution models ---------- */
.exec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}

.model{border:1px solid var(--line);border-top:3px solid var(--indigo);padding:30px 28px;background:var(--paper)}

.model.m1{border-top-color:var(--teal)}

.model.m2{border-top-color:var(--royal)}

.model.m3{border-top-color:var(--indigo)}

.model .mk{font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;font-size:10.5px;letter-spacing:.18em;color:var(--steel);text-transform:uppercase;margin-bottom:14px}

.model h3{font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;font-weight:700;font-size:19px;color:var(--indigo);margin-bottom:10px}

.model p{font-size:14px;color:var(--text-soft)}

@media (max-width:860px){.exec-grid{grid-template-columns:1fr}}

/* ---------- counterparties ---------- */
.cp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}

.cp{background:var(--paper);padding:26px 26px 24px;display:flex;flex-direction:column;gap:8px}

.cp .cph{display:flex;align-items:center;gap:11px}

.cp h3{font-size:15px;font-weight:600;color:var(--text)}

.cp p{font-size:13px;color:var(--text-soft)}

@media (max-width:860px){.cp-grid{grid-template-columns:1fr 1fr}}

@media (max-width:560px){.cp-grid{grid-template-columns:1fr}}

/* ---------- adjacent capabilities ---------- */
.adjacent{background:var(--paper-2)}

.adj-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}

.adj-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}

.adj-item{border:1px solid var(--line);background:var(--paper);padding:18px 20px;font-size:14px;font-weight:600;color:var(--indigo);display:flex;align-items:center;gap:12px}

.adj-copy p{font-size:15px;color:var(--text-soft);margin-bottom:18px}

.adj-copy p strong{color:var(--text);font-weight:600}

@media (max-width:860px){.adj-grid{grid-template-columns:1fr}}

/* ---------- offices ---------- */
.office-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}

.office.hq .oc{color:var(--teal-bright)}

.office.hq h3{color:#fff;font-size:22px}

.office.hq a{color:var(--teal-bright)}

@media (max-width:980px){.office-grid{grid-template-columns:1fr 1fr}.office.hq{grid-row:span 1;grid-column:span 2}}

@media (max-width:560px){.office-grid{grid-template-columns:1fr}.office.hq{grid-column:span 1}}

.offices-flat .office.hq{grid-row:auto}

@media (max-width:980px){.offices-flat .office.hq{grid-column:span 2}}

@media (max-width:560px){.offices-flat .office.hq{grid-column:span 1}}

/* ---------- subpage head ---------- */
.page-head{padding:78px 0 0}

.page-head h1{font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;font-weight:700;font-size:clamp(32px,4vw,46px);color:var(--indigo);line-height:1.08;margin:10px 0 16px}

.page-head .intro{max-width:660px;color:var(--text-soft);font-size:16.5px;padding-bottom:54px;border-bottom:1px solid var(--line)}

.office .tel{margin-top:8px}

.office .tbc{color:#9A99B0;font-style:italic}

.notice-list{border:1px solid var(--line)}

.notice{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:17px 24px;border-top:1px solid var(--line);flex-wrap:wrap}

.notice:first-child{border-top:none}

.notice h3{font-size:15px;font-weight:600;color:var(--text)}

.notice .soon{font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;font-size:10.5px;color:#9A99B0;letter-spacing:.1em;text-transform:uppercase;white-space:nowrap}

/* ---------- disclosures documents ---------- */
.docs{border:1px solid var(--line-strong)}

.doc{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:19px 24px;border-top:1px solid var(--line);flex-wrap:wrap}

.doc:first-child{border-top:none}

.doc h3{font-size:15px;font-weight:600;color:var(--indigo)}

.doc .dm{font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;font-size:10.5px;color:var(--steel);letter-spacing:.1em;text-transform:uppercase;margin-top:4px}

.doc a.btn{padding:9px 17px;font-size:12.5px;white-space:nowrap}

.doc .soon{font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;font-size:10.5px;color:#9A99B0;letter-spacing:.1em;text-transform:uppercase;white-space:nowrap}

/* ---------- footer ---------- */
footer{background:var(--ink);color:#A7ABC4;padding:64px 0 40px;font-size:12.5px;line-height:1.7}

.foot-top{display:flex;justify-content:space-between;gap:40px;align-items:flex-start;flex-wrap:wrap;padding-bottom:36px;border-bottom:1px solid var(--line-dark);margin-bottom:36px}

.foot-mark .foot-logo{width:140px;height:auto;display:block}

.foot-ids{font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;font-size:11px;letter-spacing:.04em;color:#8E93AE;text-align:right}

.foot-ids span{display:block;margin-bottom:4px}

.foot-ids .pending{color:var(--teal-bright)}

.legal .ln{font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;font-size:10px;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:var(--steel);margin-right:12px;white-space:nowrap}

.legal p{max-width:none;margin:10px 0}

.foot-base{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;border-top:1px solid var(--line-dark);margin-top:36px;padding-top:24px;font-size:11.5px;color:#7E84A3}

.foot-base a{color:#A7ABC4}

.foot-end{display:inline-flex;align-items:center;gap:14px}

.foot-base .li{display:inline-flex;color:#A7ABC4;transition:color .2s ease}

.foot-base .li:hover{color:#fff}

@media (max-width:760px){.foot-ids{text-align:left}}

/* ---------- reveal (JS-gated: visible by default) ---------- */
html.js .rv{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}

html.js .rv.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){html.js .rv{opacity:1;transform:none}html.js .mfade{opacity:1}}

.menu-toggle:hover::before{opacity:1}

.menu-toggle .mt-icon{position:relative;width:20px;height:20px;display:block}

/* closed: three faceted bars (slight shear echoes the logo facets) — unmistakably a menu */
.menu-toggle .mt-bars{position:absolute;inset:0;transition:opacity .3s ease}

.menu-toggle .mt-bars i:nth-child(1){top:3px;width:20px}

.menu-toggle .mt-bars i:nth-child(2){top:9px;width:13px}

.menu-toggle .mt-bars i:nth-child(3){top:15px;width:17px}

.menu-toggle:hover .mt-bars i:nth-child(2),
.menu-toggle:hover .mt-bars i:nth-child(3){width:20px}

/* open: bars give way to a clean X glyph */
.menu-toggle .mt-x{
  position:absolute;inset:0;margin:auto;width:20px;height:20px;
  opacity:0;transform:scale(.6);transition:transform .4s cubic-bezier(.4,0,.2,1),opacity .3s ease;
}

.menu-toggle .mt-x i{position:absolute;top:50%;left:1px;right:1px;height:1.5px;background:#fff;border-radius:2px}

.menu-toggle .mt-x i:nth-child(1){transform:translateY(-50%) rotate(45deg)}

.menu-toggle .mt-x i:nth-child(2){transform:translateY(-50%) rotate(-45deg)}

body.nav-open .menu-toggle::before{opacity:0}

body.nav-open .menu-toggle .mt-bars{opacity:0;transform:scale(.6)}

body.nav-open .menu-toggle .mt-x{opacity:1;transform:scale(1)}

@media (prefers-reduced-motion:reduce){
  .menu-toggle .mt-bars,.menu-toggle .mt-x,.menu-toggle::before{transition:opacity .2s ease}
  .menu-toggle:hover .mt-bars i{transform:none}
}

.nav-overlay{
  position:fixed;inset:0;z-index:200;
  background:
    radial-gradient(1100px 600px at 82% -8%, rgba(58,102,168,.30), transparent 60%),
    radial-gradient(800px 500px at 12% 110%, rgba(121,177,182,.16), transparent 55%),
    linear-gradient(135deg, var(--ink-2) 0%, var(--ink) 45%, var(--indigo-deep) 100%);
  opacity:0;visibility:hidden;transition:opacity .4s ease,visibility .4s ease;
}

.nav-overlay[hidden]{display:block}

/* keep transitionable; visibility handles a11y */
body.nav-open .nav-overlay{opacity:1;visibility:visible}

.nav-overlay-inner{
  max-width:var(--max);margin:0 auto;height:100%;
  padding:calc(var(--head-h) + 40px) 6vw 40px;
  display:flex;flex-direction:column;justify-content:center;
}

.overlay-nav{display:flex;flex-direction:column;gap:6px}

.overlay-nav a{
  font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;
  font-weight:600;font-size:clamp(30px,6vw,58px);line-height:1.12;
  color:#fff;text-decoration:none;width:fit-content;position:relative;
  opacity:0;transform:translateY(22px);
}

.overlay-nav a span{position:relative;display:inline-block;padding:4px 0}

.overlay-nav a span::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:linear-gradient(90deg,var(--royal),var(--steel),var(--teal));
  transform:scaleX(0);transform-origin:left center;transition:transform .35s cubic-bezier(.4,0,.2,1);
}

.overlay-nav a:hover span::after,.overlay-nav a:focus-visible span::after{transform:scaleX(1)}

.overlay-nav a[aria-current="page"]{color:#fff}

.overlay-nav a[aria-current="page"] span::after{transform:scaleX(1)}

/* staggered entrance once open */
body.nav-open .overlay-nav a{
  animation:ov-in .55s cubic-bezier(.22,1,.36,1) forwards;
  animation-delay:calc(.12s + var(--i) * .07s);
}

@keyframes ov-in{to{opacity:1;transform:translateY(0)}}

.nav-overlay-foot{
  margin-top:auto;padding-top:34px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;
  font-family:'Montserrat','Segoe UI',system-ui,-apple-system,sans-serif;
  font-size:11px;letter-spacing:.06em;color:rgba(255,255,255,.62);
  opacity:0;transition:opacity .4s ease .35s;
}

body.nav-open .nav-overlay-foot{opacity:1}

.ov-li{color:rgba(255,255,255,.7);display:inline-flex;transition:color .2s ease}

.ov-li:hover{color:#fff}

@media (prefers-reduced-motion:reduce){
  .nav-overlay,.overlay-nav a,.nav-overlay-foot,.menu-toggle .mt-icon i{transition:none}
  body.nav-open .overlay-nav a{animation:none;opacity:1;transform:none}
}

/* ============================================================
   DARK MODE  — token overrides + structural fixes
   Activated by <html>. Light theme untouched.
   ============================================================ */
[data-theme="dark"]{
  /* Forte dark — layered navy-ink surfaces, PURE WHITE text, vivid accents */
  --paper:#0B1020;          /* deep navy-ink base */
  --paper-2:#18233F;        /* elevated card surface */
  --surf-1:#121A30;         /* mid elevation (sections/table body) */
  --text:#FFFFFF;           /* pure white body + headings */
  --text-soft:#D6DAE6;      /* muted but bright */
  --indigo:#FFFFFF;         /* accent (headings/links/stats) -> white for clean mono look */
  --indigo-deep:#1E2A4A;    /* indigo surface (chips, HQ block) */
  --ink:#080C18;            /* darkest surface (footer base) */
  --ink-2:#05080F;
  --royal:#8FB2F2;
  --steel:#9DC4E2;
  --teal:#8FD3D8;
  --teal-bright:#B6EAEE;
  --line:rgba(160,176,225,.14);
  --line-strong:rgba(160,176,225,.28);
  --line-dark:rgba(255,255,255,.10);
}

[data-theme="dark"] body{background:var(--paper);color:var(--text)}

/* --- Solid (scrolled) header: dark glass instead of white glass --- */
[data-theme="dark"] header.site.solid{
  background:rgba(14,13,31,.90);
  box-shadow:inset 0 -1px 0 var(--line);
}

/* the colour logo is dark-on-light artwork; invert it to read on the dark bar */
[data-theme="dark"] header.site.solid .logo-link .logo-c{filter:brightness(0) invert(1)}

/* solid-state menu toggle: light glyph + hairline */
[data-theme="dark"] header.site.solid .menu-toggle{border-color:var(--line-strong);color:var(--text)}

[data-theme="dark"] header.site.solid .menu-toggle:hover{background:rgba(255,255,255,.08)}

[data-theme="dark"] header.site.solid .menu-toggle .mt-bars i{background:var(--text)}

[data-theme="dark"] header.site.solid .menu-toggle:hover .mt-bars i{background:var(--teal-bright)}

/* --- Frosted office card (offices.html) uses a hardcoded white wash --- */
[data-theme="dark"] .office{background:rgba(255,255,255,.05);border-color:var(--line)}

/* --- Solid buttons: keep dark text on the bright fill so they stay legible --- */

/* --- Map (index): neutralise any light plate so the geo render sits on dark --- */
[data-theme="dark"] .map-wrap,
[data-theme="dark"] .world-map,
[data-theme="dark"] [class*="map"]{background:transparent}

/* --- Selection + focus ring tuned for dark --- */
[data-theme="dark"] ::selection{background:rgba(166,218,221,.28);color:#fff}

/* ============================================================
   THEME TOGGLE BUTTON  (top-right, sits beside the menu button)
   Works in both header states; sun/moon crossfade.
   ============================================================ */
.head-actions{display:flex;align-items:center;gap:12px;margin-left:auto}

.theme-toggle{
  position:relative;width:42px;height:42px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);border-radius:999px;
  background:transparent;color:var(--ink);cursor:pointer;
  transition:background-color .25s ease,border-color .25s ease,color .25s ease;
  -webkit-tap-highlight-color:transparent;
}

.theme-toggle:hover{background:var(--paper-2);border-color:var(--line-strong)}

.theme-toggle:focus-visible{outline:2px solid var(--teal-bright);outline-offset:3px}

.theme-toggle .tt-icon{position:relative;width:18px;height:18px;display:block}

.theme-toggle .tt-icon svg{position:absolute;inset:0;width:18px;height:18px;transition:opacity .3s ease,transform .4s ease}

/* light theme showing -> offer the moon (switch to dark) */
.theme-toggle .tt-sun{opacity:0;transform:rotate(-90deg) scale(.6)}

.theme-toggle .tt-moon{opacity:1;transform:none}

/* dark theme showing -> offer the sun (switch to light) */
[data-theme="dark"] .theme-toggle .tt-sun{opacity:1;transform:none}

[data-theme="dark"] .theme-toggle .tt-moon{opacity:0;transform:rotate(90deg) scale(.6)}

/* solid header (scrolled) — light theme: dark glyph on white bar */
header.site.solid .theme-toggle{border-color:var(--line-strong);color:var(--ink)}

header.site.solid .theme-toggle:hover{background:var(--paper-2)}

/* solid header in dark mode: light glyph again */
[data-theme="dark"] header.site.solid .theme-toggle{border-color:var(--line-strong);color:var(--text)}

[data-theme="dark"] header.site.solid .theme-toggle:hover{background:rgba(255,255,255,.08)}

/* keep both controls visible & clickable above the open nav overlay */
body.nav-open .theme-toggle{border-color:rgba(255,255,255,.28);color:#fff;background:transparent}

@media (prefers-reduced-motion:reduce){
  .theme-toggle .tt-icon svg{transition:opacity .2s ease}
  .theme-toggle .tt-sun,[data-theme="dark"] .theme-toggle .tt-moon{transform:none}
}