/* =========================================================
   GLOBAL UTILITIES / TOKENS (non-destructive)
   ========================================================= */

/* Visually hide but keep for screen readers */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* =========================================================
   HEADER (Sticky + Glass) 
   ========================================================= */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  color: #fff;
  transform: translateY(0);
  transition: transform .35s ease, background-color .3s ease, backdrop-filter .3s ease, border-color .3s ease;
  background: rgba(10, 10, 10, 0.7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}
.site-header.is-at-top {
  background: transparent;
  border-bottom-color: transparent;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  box-shadow: none;
}
.site-header.has-shadow { box-shadow: 0 10px 28px rgba(0,0,0,0.18); }
.site-header.site-header--hidden { transform: translateY(-100%); }

.site-header .nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

/* Brand */
.brand, .foot-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.brand-text { color: #fff; font-weight: 600; }

/* Pull hero up under the fixed header */
#hero { margin-top: -69px; } /* must match header height (68px) + 1px border */

/* =========================================================
   PRIMARY NAV
   ========================================================= */

.nav-links {
  list-style: none;
  margin: 0; padding: 0;
  display: flex; align-items: center; gap: 22px;
}
.nav-links a {
  color: rgba(255,255,255,0.78);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 8px;
  transition: color .15s ease, background-color .15s ease;
}
.nav-links a:hover { color: #fff; background: rgba(255,255,255,0.08); }
.nav-links a.is-active { color: #fff; background: rgba(255,255,255,0.12); }

/* Header CTA */
.nav-cta .btn.small {
  background: var(--accent);
  color: #fff;
  border: 1px solid transparent;
  padding: 8px 14px;
  border-radius: 999px;
}
.nav-cta .btn.small:hover { background: var(--accent-2); }

/* Toggle button (mobile) */
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 8px;
  border-radius: 8px;
  color: #fff;
}

/* =========================================================
   MOBILE NAV (overlay panel)
   ========================================================= */
@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }

  .primary-nav {
    position: fixed; top: 68px; left: 0; right: 0;
    background: rgba(0,0,0,0.92);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    transform: translateY(-8px);
    opacity: 0; pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
  }
  .primary-nav.is-open { transform: none; opacity: 1; pointer-events: auto; }

  .primary-nav .nav-links {
    flex-direction: column;
    gap: 10px;
    padding: 12px 20px;
  }
  .primary-nav .nav-links a { color: rgba(255,255,255,0.9); background: transparent; }
  .primary-nav .nav-links a:hover { background: rgba(255,255,255,0.08); }
}

/* =========================================================
   FOOTER (legacy .site-footer)
   ========================================================= */

.site-footer { padding: 32px 0; border-top: 1px solid var(--line); }
.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr .8fr;
  gap: 24px;
}
.foot small { color: var(--muted); display: block; margin-top: 8px; }
.foot h5 {
  margin: 0 0 8px;
  font-size: 14px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}
.foot a { display: block; color: var(--ink); margin: 6px 0; }
.foot a:hover { color: var(--accent); }

@media (max-width: 900px) {
  .site-footer .footer-grid { grid-template-columns: 1fr; }
}

/* =========================================================
   FOOTER (modern .main-footer)
   ========================================================= */

.main-footer {
  background: #181818;
  color: #a0aec0;
  font-size: 15px;
  padding-top: 80px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.main-footer .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr; /* first column wider */
  gap: 64px;
  padding-bottom: 64px;
}
.main-footer .footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 24px;
  letter-spacing: .5px;
  text-transform: uppercase;
}
.main-footer .footer-logo img {
  max-width: 60px;
  height: auto;
  margin-bottom: 24px;
}
.main-footer .footer-tagline {
  line-height: 1.7;
  max-width: 40ch;
  margin-bottom: 24px;
}
.main-footer .footer-links {
  list-style: none;
  padding: 0; margin: 0;
  display: grid; gap: 12px;
}
.main-footer .footer-links a {
  color: #a0aec0;
  text-decoration: none;
  transition: color .2s ease;
}
.main-footer .footer-links a:hover { color: #fff; }

.main-footer .social-links {
  display: flex; align-items: center; gap: 16px; margin-top: 24px;
}
.main-footer .social-links a {
  color: #a0aec0; transition: all .2s ease;
}
.main-footer .social-links a:hover { color: #fff; transform: scale(1.1); }
.main-footer .social-links svg { width: 24px; height: 24px; }

.main-footer .footer-bottom {
  padding: 24px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 14px;
  color: #a0aec0;
}

@media (max-width: 900px) {
  .main-footer .footer-grid { grid-template-columns: 1fr; gap: 48px; }
}

/* =========================================================
   BACK TO TOP (unified; supports animate-in/out classes)
   ========================================================= */

.to-top {
  position: fixed;
  right: clamp(12px, 2vw, 24px);
  bottom: calc(clamp(12px, 2vw, 24px) + env(safe-area-inset-bottom, 0px));
  z-index: 1200;

  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 999px;

  display: grid;
  place-items: center;

  color: #fff;
  background: var(--accent, #0a84ff);
  box-shadow: 0 10px 24px rgba(0,0,0,.18);

  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(8px);

  transition: opacity .2s ease, transform .2s ease, visibility .2s ease, background-color .2s ease;
}
.to-top:hover { background: var(--accent-2); }
.to-top:focus-visible {
  outline: 3px solid var(--focus, #6aa9ff);
  outline-offset: 2px;
  box-shadow: 0 0 0 3px rgba(106,169,255,.35), 0 10px 24px rgba(0,0,0,.22);
}
.to-top svg { width: 22px; height: 22px; stroke: currentColor; fill: none; }

/* visible state toggled by JS */
.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

/* Bounce animations (class hooks used by main.js) */
@keyframes toTop-bounce-in {
  0%   { opacity: 0; transform: translateY(22px) scale(.98); }
  60%  { opacity: 1; transform: translateY(-8px); }
  80%  { transform: translateY(3px); }
  100% { transform: translateY(0); }
}
@keyframes toTop-bounce-out {
  0%   { opacity: 1; transform: translateY(0); }
  20%  { transform: translateY(-3px); }
  100% { opacity: 0; transform: translateY(22px); }
}
.to-top.is-visible.animate-in { animation: toTop-bounce-in .5s cubic-bezier(.34,1.56,.64,1) both; }
.to-top.animate-out { animation: toTop-bounce-out .35s ease-in both; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .to-top { transition: none; }
  .to-top.is-visible.animate-in,
  .to-top.animate-out { animation: none !important; }
}

/* ============================
   Header dropdown = black glass
   ============================ */
:root{
  --header-glass: rgba(12,18,28,.72);
  --header-glass-border: rgba(255,255,255,.08);
}

/* Desktop dropdowns / flyouts (catch common patterns) */
.site-header .dropdown-menu,
.site-header .submenu,
.site-header .menu-panel,
.site-header [role="menu"],
.site-header .nav-popover {
  background: var(--header-glass) !important;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--header-glass-border);
  box-shadow: 0 12px 32px rgba(0,0,0,.24);
  color: #fff;
}

/* Mobile drawer / menu panel */
.site-header .mobile-menu,
.site-header .nav-drawer,
.site-header .menu-drawer {
  background: var(--header-glass) !important;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--header-glass-border);
  color: #fff;
}

/* Links inside the menus */
.site-header .dropdown-menu a,
.site-header .submenu a,
.site-header .menu-panel a,
.site-header .mobile-menu a,
.site-header .nav-drawer a {
  color: #fff;
}

.site-header .dropdown-menu a:hover,
.site-header .submenu a:hover,
.site-header .menu-panel a:hover,
.site-header .mobile-menu a:hover,
.site-header .nav-drawer a:hover {
  background: rgba(255,255,255,.06);
}

/* If your dropdown uses <details> */
.site-header details[open] > .menu-panel {
  background: var(--header-glass) !important;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--header-glass-border);
  color: #fff;
}

/* ============================
   Header dropdown = black glass
   (global, lightweight)
   ============================ */
:root{
  --header-glass: rgba(12,18,28,.72);
  --header-glass-border: rgba(255,255,255,.08);
}

/* Desktop dropdowns / flyouts / popovers */
header .dropdown-menu,
header .submenu,
header .menu-panel,
header [role="menu"],
header .nav-popover {
  background: var(--header-glass) !important;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--header-glass-border);
  box-shadow: 0 12px 32px rgba(0,0,0,.24);
  color: #fff;
}

/* Mobile drawer / offcanvas */
header .mobile-menu,
header .menu-drawer,
header .nav-drawer {
  background: var(--header-glass) !important;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--header-glass-border);
  color: #fff;
}

/* Links inside menus */
header .dropdown-menu a,
header .submenu a,
header .menu-panel a,
header .mobile-menu a,
header .nav-drawer a {
  color: #fff;
}
header .dropdown-menu a:hover,
header .submenu a:hover,
header .menu-panel a:hover,
header .mobile-menu a:hover,
header .nav-drawer a:hover {
  background: rgba(255,255,255,.06);
}

/* <details> based menus */
header details[open] > .menu-panel {
  background: var(--header-glass) !important;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--header-glass-border);
  color: #fff;
}