/* ==========================================================
   Quantum Bridge Holdings — Shared Site Theme
   Use this on every QBH HTML page:
   <script>early qbh-theme boot</script>
   <link rel="stylesheet" href="assets/css/qbh-site-theme.css">
   <script src="assets/js/qbh-theme.js" defer></script>
   ========================================================== */
:root{
  color-scheme: light;
  --qbh-bg:#f7f3ec;
  --qbh-bg-2:#fffaf1;
  --qbh-surface:rgba(255,255,255,.82);
  --qbh-surface-solid:#ffffff;
  --qbh-ink:#0c111d;
  --qbh-muted:#5b6472;
  --qbh-soft:#eef0f3;
  --qbh-border:rgba(15,23,42,.12);
  --qbh-accent:#c46b1e;
  --qbh-accent-dark:#7a3700;
  --qbh-gold:#d6aa35;
  --qbh-gold-soft:rgba(214,170,53,.18);
  --qbh-orange-soft:rgba(196,107,30,.13);
  --qbh-green:#0f766e;
  --qbh-black:#05070d;
  --qbh-shadow:0 24px 80px rgba(15,23,42,.13);
  --qbh-shadow-soft:0 14px 36px rgba(15,23,42,.08);
  --qbh-radius:24px;
  --qbh-radius-xl:34px;
  --qbh-max:1180px;

  /* Backward-compatible aliases used by existing pages */
  --bg:var(--qbh-bg);
  --bg-2:var(--qbh-bg-2);
  --surface:var(--qbh-surface);
  --surface-solid:var(--qbh-surface-solid);
  --ink:var(--qbh-ink);
  --fg:var(--qbh-ink);
  --muted:var(--qbh-muted);
  --soft:var(--qbh-soft);
  --border:var(--qbh-border);
  --border-soft:var(--qbh-border);
  --accent:var(--qbh-accent);
  --accent-dark:var(--qbh-accent-dark);
  --accent-strong:var(--qbh-accent-dark);
  --gold:var(--qbh-gold);
  --gold-soft:var(--qbh-gold-soft);
  --orange-soft:var(--qbh-orange-soft);
  --card:var(--qbh-surface-solid);
  --shadow:var(--qbh-shadow-soft);
  --radius:var(--qbh-radius);
  --radius-xl:var(--qbh-radius-xl);
  --max:var(--qbh-max);
}

html[data-theme="dark"]{
  color-scheme: dark;
  --qbh-bg:#05070d;
  --qbh-bg-2:#0a0f1c;
  --qbh-surface:rgba(15,23,42,.76);
  --qbh-surface-solid:#0b1120;
  --qbh-ink:#f8fafc;
  --qbh-muted:#a8b3c7;
  --qbh-soft:#111827;
  --qbh-border:rgba(226,232,240,.14);
  --qbh-accent:#f59e45;
  --qbh-accent-dark:#ffc378;
  --qbh-gold:#f4c95d;
  --qbh-gold-soft:rgba(244,201,93,.16);
  --qbh-orange-soft:rgba(245,158,69,.15);
  --qbh-green:#5eead4;
  --qbh-shadow:0 30px 90px rgba(0,0,0,.55);
  --qbh-shadow-soft:0 20px 60px rgba(0,0,0,.32);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0 !important;
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif !important;
  color:var(--qbh-ink) !important;
  background:
    radial-gradient(900px 520px at 12% -10%, var(--qbh-orange-soft), transparent 64%),
    radial-gradient(780px 440px at 86% 6%, var(--qbh-gold-soft), transparent 62%),
    linear-gradient(180deg,var(--qbh-bg),var(--qbh-bg-2) 42%,var(--qbh-bg)) !important;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:-1;
  opacity:.48;
  background-image:
    linear-gradient(rgba(15,23,42,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15,23,42,.045) 1px, transparent 1px);
  background-size:72px 72px;
  mask-image:linear-gradient(to bottom, black, transparent 78%);
}
html[data-theme="dark"] body::before{
  opacity:.18;
  background-image:
    linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px);
}
a{color:inherit;}
img{max-width:100%;height:auto;display:block;}
.container{width:min(var(--qbh-max),calc(100% - 40px));max-width:var(--qbh-max);margin:0 auto;padding-left:0;padding-right:0;}
.section{padding:88px 0;}
p{color:var(--qbh-muted);}

/* Shared header + navigation */
.announcement-bar{
  position:relative;
  z-index:60;
  background:linear-gradient(90deg,#f97316,#facc15,#fb923c) !important;
  color:#101010 !important;
  text-align:center;
  padding:.62rem 1rem;
  font-size:.9rem;
  font-weight:800;
}
.announcement-bar a{color:#101010 !important;text-decoration:underline;text-underline-offset:3px;}
.site-header{
  position:sticky !important;
  top:0;
  z-index:50;
  backdrop-filter:blur(18px);
  background:color-mix(in srgb, var(--qbh-bg) 76%, transparent) !important;
  border-bottom:1px solid var(--qbh-border) !important;
  box-shadow:none !important;
}
.header-inner{
  height:74px !important;
  display:flex !important;
  align-items:center !important;
  justify-content:space-between !important;
  gap:1rem !important;
  padding:0 !important;
}
.brand{display:flex;align-items:center;gap:.75rem;color:var(--qbh-ink) !important;text-decoration:none;min-width:0;}
.brand-logo{width:44px !important;height:44px !important;border-radius:15px !important;object-fit:cover;border:1px solid var(--qbh-border);background:#fff;box-shadow:0 14px 26px rgba(0,0,0,.18);}
.brand-text{font-weight:950 !important;letter-spacing:-.03em !important;white-space:nowrap;color:var(--qbh-ink) !important;}
.nav{display:flex;align-items:center;gap:.7rem;position:relative;}
.nav-list{
  display:flex !important;
  align-items:center !important;
  gap:.25rem !important;
  list-style:none !important;
  margin:0 !important;
  padding:.35rem !important;
  border:1px solid var(--qbh-border) !important;
  border-radius:999px !important;
  background:var(--qbh-surface) !important;
  box-shadow:0 10px 34px rgba(15,23,42,.05) !important;
}
.nav-list a,.theme-toggle{
  display:inline-flex !important;
  align-items:center !important;
  gap:.35rem !important;
  padding:.58rem .82rem !important;
  border-radius:999px !important;
  color:var(--qbh-muted) !important;
  text-decoration:none !important;
  font-size:.86rem !important;
  font-weight:800 !important;
  border:0 !important;
  background:transparent !important;
  cursor:pointer !important;
}
.nav-list a:hover,.theme-toggle:hover{background:var(--qbh-soft) !important;color:var(--qbh-ink) !important;}
.btn-donate-nav{
  background:linear-gradient(135deg,var(--qbh-accent),var(--qbh-accent-dark)) !important;
  color:#fff !important;
  border-radius:999px !important;
  box-shadow:0 10px 24px rgba(196,107,30,.24) !important;
}
.nav-toggle{display:none;}

/* Shared hero rhythm */
.hero{position:relative;overflow:hidden;background:transparent !important;border:0 !important;}
.hero-inner{position:relative;z-index:1;}
.hero-title,.qbh-blog-page .hero-title{
  font-family:"Playfair Display",Georgia,serif !important;
  font-size:clamp(2.6rem,6vw,5.15rem) !important;
  line-height:.98 !important;
  letter-spacing:-.045em !important;
  color:var(--qbh-ink) !important;
  text-shadow:none !important;
  max-width:920px;
}
.hero .sub{color:var(--qbh-muted) !important;}
.hero-bg{opacity:.9;}

/* Buttons */
.btn,.btn-primary,.btn-outline,.icon-btn,.sugg,.tag-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  border-radius:999px !important;
  border:1px solid var(--qbh-border) !important;
  font-weight:850 !important;
  text-decoration:none !important;
  background:var(--qbh-surface) !important;
  color:var(--qbh-ink) !important;
  box-shadow:0 10px 28px rgba(15,23,42,.07) !important;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease !important;
  cursor:pointer;
}
.btn:hover,.btn-primary:hover,.btn-outline:hover,.icon-btn:hover{transform:translateY(-2px);box-shadow:var(--qbh-shadow-soft) !important;}
.btn-primary,.view-toggle .is-active{
  border-color:transparent !important;
  color:#fff !important;
  background:linear-gradient(135deg,var(--qbh-accent-dark),var(--qbh-accent) 48%,var(--qbh-gold)) !important;
  box-shadow:0 18px 42px rgba(196,107,30,.26) !important;
}
.btn-outline{background:transparent !important;color:var(--qbh-accent) !important;border-color:color-mix(in srgb,var(--qbh-accent) 40%,var(--qbh-border)) !important;}
.btn-ghost{background:transparent !important;}

/* Shared cards */
.card,.glass-card,.portfolio-card,.metric,.info-card,.impact-card,.snapshot-card,.contact-card,.blog-card,.modal-card,.mini-teaser{
  border:1px solid var(--qbh-border) !important;
  border-radius:var(--qbh-radius) !important;
  background:var(--qbh-surface) !important;
  color:var(--qbh-ink) !important;
  box-shadow:var(--qbh-shadow-soft) !important;
  backdrop-filter:blur(18px);
}
.card p,.glass-card p,.portfolio-card p,.metric p,.info-card p,.impact-card p,.snapshot-card p,.contact-card p,.blog-card p{color:var(--qbh-muted) !important;}
.chip,.badge,.pill,#tagRow .pill,.clear-pill,.rc-pill{
  border:1px solid var(--qbh-border) !important;
  background:var(--qbh-surface) !important;
  color:var(--qbh-muted) !important;
  border-radius:999px !important;
  font-weight:800 !important;
}
.badge,.rc-pill{color:var(--qbh-accent) !important;background:linear-gradient(135deg,var(--qbh-orange-soft),var(--qbh-gold-soft)) !important;border-color:color-mix(in srgb,var(--qbh-accent) 32%,var(--qbh-border)) !important;}

/* Blog page alignment */
.qbh-blog-page .hero{
  padding:86px 0 44px !important;
}
.qbh-blog-page .hero-inner{
  min-height:340px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:38px !important;
  border:1px solid var(--qbh-border);
  border-radius:var(--qbh-radius-xl);
  background:
    linear-gradient(135deg,color-mix(in srgb,var(--qbh-surface-solid) 86%,transparent),color-mix(in srgb,var(--qbh-surface) 72%,transparent)),
    radial-gradient(520px 280px at 8% 10%,var(--qbh-gold-soft),transparent 62%) !important;
  box-shadow:var(--qbh-shadow) !important;
}
.qbh-blog-page .hero .sub{
  margin-top:1rem;
  font-family:Inter,system-ui,sans-serif !important;
  font-size:1.12rem !important;
  line-height:1.75 !important;
}
.blog-list{gap:18px !important;}
.blog-card{overflow:hidden !important;transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;}
.blog-card:hover{transform:translateY(-3px);box-shadow:var(--qbh-shadow) !important;border-color:color-mix(in srgb,var(--qbh-accent) 36%,var(--qbh-border)) !important;}
.blog-media{
  background:
    radial-gradient(240px 100px at 20% 20%, rgba(255,255,255,.25), transparent 60%),
    linear-gradient(135deg,var(--qbh-accent),var(--qbh-gold)) !important;
  color:#fff !important;
}
.blog-title a{color:var(--qbh-ink) !important;text-decoration:none !important;}
.blog-title a:hover{color:var(--qbh-accent) !important;text-decoration:underline !important;}
.blog-meta{color:var(--qbh-muted) !important;}
#tagRow .pill.active,.pill.active{outline:2px solid var(--qbh-accent) !important;}
.tag-title,.search-badge{color:var(--qbh-muted) !important;}
.autocomplete{background:var(--qbh-surface-solid) !important;border-color:var(--qbh-border) !important;color:var(--qbh-ink) !important;}
.modal-backdrop{background:radial-gradient(100% 100% at 50% 0%, var(--qbh-orange-soft), rgba(0,0,0,.48)) !important;}

/* Forms */
input,textarea,select,#modalQ{
  border:1px solid var(--qbh-border) !important;
  background:color-mix(in srgb,var(--qbh-surface-solid) 76%,transparent) !important;
  color:var(--qbh-ink) !important;
}
input::placeholder,textarea::placeholder{color:color-mix(in srgb,var(--qbh-muted) 74%,transparent) !important;}
input:focus,textarea:focus,select:focus,#modalQ:focus{outline:none;border-color:var(--qbh-accent) !important;box-shadow:0 0 0 4px var(--qbh-orange-soft) !important;}

/* Footer */
.site-footer{
  padding:34px 0 !important;
  border-top:1px solid var(--qbh-border) !important;
  background:color-mix(in srgb,var(--qbh-surface-solid) 45%,transparent) !important;
  color:var(--qbh-ink) !important;
}
.footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;}
.site-footer p{color:var(--qbh-muted) !important;font-size:.9rem;}
.site-footer nav{display:flex;gap:1rem;flex-wrap:wrap;}
.site-footer nav a{color:var(--qbh-muted) !important;text-decoration:none;font-weight:800;font-size:.9rem;}
.site-footer nav a:hover{color:var(--qbh-accent) !important;}

/* Floating universal theme control */
#theme-toggle{
  position:fixed;
  right:18px;
  bottom:18px;
  z-index:80;
  border-radius:999px !important;
  border:1px solid var(--qbh-border) !important;
  background:var(--qbh-surface) !important;
  color:var(--qbh-ink) !important;
  backdrop-filter:blur(18px);
  box-shadow:var(--qbh-shadow-soft) !important;
  padding:.72rem .95rem;
  font-weight:900;
  cursor:pointer;
}

/* Mobile */
@media (max-width:850px){
  .nav-toggle{
    display:inline-flex !important;
    width:44px;height:44px;
    align-items:center;justify-content:center;flex-direction:column;
    gap:4px;
    border:1px solid var(--qbh-border);
    border-radius:14px;
    background:var(--qbh-surface);
    color:var(--qbh-ink);
    cursor:pointer;
  }
  .nav-toggle .bar{display:block;width:18px;height:2px;background:currentColor;border-radius:999px;margin:0;}
  .nav-list{
    position:absolute !important;
    top:58px !important;
    right:0 !important;
    min-width:260px !important;
    display:none !important;
    flex-direction:column !important;
    align-items:stretch !important;
    border-radius:22px !important;
    padding:.55rem !important;
  }
  .nav-toggle[aria-expanded="true"] ~ .nav-list{display:flex !important;}
  .nav-list a,.theme-toggle{justify-content:flex-start !important;width:100% !important;}
  .brand-text{max-width:190px;overflow:hidden;text-overflow:ellipsis;}
  .header-inner{height:66px !important;}
  .section{padding:64px 0;}
}
@media (max-width:620px){
  .container{width:min(var(--qbh-max),calc(100% - 28px));}
  .btn{width:100%;}
  .footer-inner{align-items:flex-start;}
}