/* Shared site header (matches singla.ai home page) */
:root {
  --navy-900: #0B102E;
  --navy-800: #162540;
  --navy-700: #1E3252;
  --lime: #D5FD2C;
  --bg: #FFFFFF;
  --bg-subtle: #F6F7F9;
  --text: #0B102E;
  --text-muted: #5B6478;
  --border: #E5E7EB;
  --shadow-sm: 0 1px 2px rgba(13,27,46,.05), 0 4px 16px rgba(13,27,46,.04);
  --radius-btn: 2px;
  --header-container: 1280px;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: border-color .35s ease, box-shadow .35s ease, background .35s ease;
}
.header.scrolled,
.header--solid {
  background: #fff;
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.header.header--solid {
  transition: none;
}
.header .nav,
.header .nav-cta,
.header .hamburger {
  opacity: 0;
  pointer-events: none;
  transition: opacity .35s ease;
}
.header.scrolled .nav,
.header.scrolled .nav-cta,
.header.scrolled .hamburger,
.header--solid .nav,
.header--solid .nav-cta,
.header--solid .hamburger {
  opacity: 1;
  pointer-events: auto;
}
.header.header--instant,
.header.header--instant .nav,
.header.header--instant .nav-cta,
.header.header--instant .hamburger {
  transition: none !important;
}
html.header-pre-scrolled .header:not(.header--solid) {
  background: #fff;
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}
html.header-pre-scrolled .header:not(.header--solid) .nav,
html.header-pre-scrolled .header:not(.header--solid) .nav-cta,
html.header-pre-scrolled .header:not(.header--solid) .hamburger {
  opacity: 1;
  pointer-events: auto;
}
.header-inner {
  max-width: var(--header-container);
  margin: 0 auto;
  padding: 0 1.25rem;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
@media (min-width: 768px) {
  .header-inner { padding: 0 1.5rem; }
}
@media (min-width: 1024px) {
  .header-inner { padding: 0 2rem; }
}
.header-right {
  display: flex;
  align-items: center;
  gap: .65rem;
}
.header-logo img { height: 36px; width: auto; }
.nav { display: flex; align-items: center; gap: .15rem; }
.nav a {
  font-size: .9375rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: .45rem .75rem;
  border-radius: 8px;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s ease, background .2s ease;
}
.nav a:hover { color: var(--text); background: var(--bg-subtle); }
.nav a:focus-visible { outline: 2px solid var(--lime); outline-offset: 2px; }
.nav a[aria-current="page"] { color: var(--text); background: var(--bg-subtle); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  background: var(--navy-900);
  color: #fff !important;
  padding: .5rem 1.15rem;
  border-radius: var(--radius-btn);
  font-size: .9375rem;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(13,27,46,.18);
  transition: background .2s ease, transform .15s ease, box-shadow .2s ease;
  flex-shrink: 0;
}
.nav-cta:hover {
  background: var(--navy-800);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(13,27,46,.22);
}
.nav-cta:focus-visible { outline: 2px solid var(--lime); outline-offset: 3px; }
.nav-cta-icon { display: inline-flex; align-items: center; line-height: 0; }
.nav-cta-icon svg { display: block; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  position: relative;
  z-index: 1;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}
.hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.has-site-header { padding-top: 68px; }

@media (max-width: 768px) {
  .header .hamburger,
  .header--solid .hamburger {
    opacity: 1;
    pointer-events: auto;
  }
  .header.menu-open {
    z-index: 300;
    background: #fff;
    border-bottom-color: var(--border);
    box-shadow: var(--shadow-sm);
  }
  .header.menu-open .header-inner {
    position: relative;
    z-index: 302;
  }
  .header.menu-open .hamburger {
    position: relative;
    z-index: 303;
    pointer-events: auto;
  }
  .nav { display: none; }
  .nav.open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: fixed;
    inset: 0;
    background: var(--bg);
    z-index: 301;
    padding: 5.5rem 1.5rem 2rem;
  }
  .nav.open a { font-size: 1.1rem; padding: .85rem 1rem; }
  .nav-cta { padding: .5rem 1rem; font-size: .875rem; }
  .hamburger { display: flex; }
}