/* Nibbly shared header — glass white, black/red typography, red CTAs */
:root {
  --nibbly-red: #ef1b24;
  --nibbly-red-dark: #d91019;
  --nibbly-ink: #171717;
  --nibbly-muted: #66666d;
  --nibbly-glass: rgba(255, 255, 255, .86);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  padding: 10px 0;
  background: transparent;
  transition: padding .25s ease, background .25s ease;
}

.header-glass {
  position: relative;
  display: flex;
  align-items: center;
  gap: 22px;
  width: min(1440px, calc(100% - 32px));
  min-height: 76px;
  margin-inline: auto;
  padding: 10px 18px;
  border: 1px solid rgba(20, 20, 20, .09);
  border-radius: 20px;
  background: var(--nibbly-glass);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
  backdrop-filter: blur(22px) saturate(160%);
  box-shadow: 0 10px 34px rgba(20, 20, 20, .08);
  transition: border-color .25s ease, box-shadow .25s ease, background .25s ease;
}

.site-header.scrolled .header-glass {
  background: rgba(255,255,255,.94);
  border-color: rgba(239,27,36,.16);
  box-shadow: 0 12px 38px rgba(20,20,20,.11);
}

.site-header .brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--nibbly-ink);
  text-decoration: none;
}

.site-header .brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  overflow: hidden;
  border-radius: 13px;
  background: #fff;
}

.site-header .brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.site-header .brand-word {
  display: flex;
  flex-direction: column;
  gap: 4px;
  white-space: nowrap;
}

.site-header .brand-word strong {
  color: var(--nibbly-ink);
  font-family: "Space Grotesk", Inter, sans-serif;
  font-size: 24px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.8px;
}

.site-header .brand-period {
  color: var(--nibbly-red);
}

.site-header .brand-word small {
  color: #55555b;
  font-size: 10px;
  font-weight: 650;
  letter-spacing: .1px;
}

.site-header .main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(8px, 1.05vw, 17px);
  flex: 1 1 auto;
  min-width: 0;
}

.site-header .main-nav a {
  position: relative;
  padding: 10px 0;
  color: #25252a;
  font-size: 12px;
  font-weight: 650;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s ease;
}

.site-header .main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 3px;
  height: 2px;
  border-radius: 99px;
  background: var(--nibbly-red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .2s ease;
}

.site-header .main-nav a:hover,
.site-header .main-nav a.active {
  color: var(--nibbly-red);
}

.site-header .main-nav a:hover::after,
.site-header .main-nav a.active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.nav-join,
.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--nibbly-red);
  border-radius: 12px;
  background: var(--nibbly-red);
  color: #fff;
  font-size: 12px;
  font-weight: 750;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 5px 14px rgba(239,27,36,.16);
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
}

.nav-join {
  background: #fff;
  color: var(--nibbly-red);
  box-shadow: none;
}

.nav-join:hover,
.nav-cta:hover {
  background: var(--nibbly-red-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(239,27,36,.23);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 11px;
  border: 1px solid rgba(20,20,20,.12);
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  margin: 4px 0;
  border-radius: 3px;
  background: var(--nibbly-ink);
  transition: transform .2s ease, opacity .2s ease;
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-6px) rotate(-45deg);
}

@media (max-width: 1250px) {
  .header-glass { gap: 14px; padding-inline: 14px; }
  .site-header .main-nav { gap: 10px; }
  .site-header .main-nav a { font-size: 11px; }
  .site-header .brand-word small { font-size: 9px; }
  .nav-join, .nav-cta { padding-inline: 11px; font-size: 11px; }
}

@media (max-width: 1080px) {
  .site-header { padding: 8px 0; }
  .header-glass {
    min-height: 68px;
    border-radius: 17px;
    flex-wrap: wrap;
    justify-content: space-between;
  }
  .nav-toggle { display: block; order: 3; }
  .header-actions { margin-left: auto; }
  .site-header .main-nav {
    display: none;
    order: 4;
    flex: 0 0 100%;
    width: 100%;
    padding: 10px 4px 5px;
    border-top: 1px solid rgba(20,20,20,.09);
    align-items: stretch;
    gap: 3px;
  }
  .site-header .main-nav.open { display: flex; flex-direction: column; }
  .site-header .main-nav a {
    padding: 12px 11px;
    border-radius: 9px;
    font-size: 14px;
  }
  .site-header .main-nav a::after { display: none; }
  .site-header .main-nav a:hover,
  .site-header .main-nav a.active {
    background: rgba(239,27,36,.07);
  }
}

@media (max-width: 560px) {
  .header-glass {
    width: calc(100% - 20px);
    padding: 9px 10px;
    gap: 8px;
  }
  .site-header .brand { gap: 8px; }
  .site-header .brand-mark { width: 40px; height: 40px; }
  .site-header .brand-word strong { font-size: 21px; }
  .site-header .brand-word small { font-size: 8px; letter-spacing: 0; }
  .nav-toggle { width: 40px; height: 40px; padding: 9px; }
  .header-actions { gap: 6px; }
  .nav-join, .nav-cta {
    min-height: 38px;
    padding: 0 9px;
    gap: 5px;
    border-radius: 10px;
    font-size: 10px;
  }
}

@media (max-width: 390px) {
  .site-header .brand-word small { max-width: 120px; white-space: normal; }
  .nav-join { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .site-header *, .site-header *::before, .site-header *::after {
    transition: none !important;
    animation: none !important;
  }
}