/**
 * Marketeam-style header / menu — adapted for COWDLLY
 * Load after styles.css + ux-polish.css
 */

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  width: min(1920px, 100%);
  margin: 0 auto;
  padding: 14px clamp(16px, 4vw, 48px);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px 20px;
  background: rgba(7, 6, 12, 0.94);
  border-bottom: 1px solid rgba(160, 104, 255, 0.12);
}

@keyframes header-fade-down {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.header-left,
.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}

.header-left {
  justify-self: start;
}

.header-right {
  gap: 18px;
  flex-shrink: 0;
  justify-self: end;
}

.brand img {
  height: 48px !important;
  width: auto !important;
  max-width: min(200px, 48vw) !important;
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  justify-self: center;
  grid-column: 2;
}

.site-nav > a {
  position: relative;
  text-decoration: none;
  color: #ffffff;
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: color 0.25s ease;
}

.site-nav > a:not(.nav-cta-mobile)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -5px;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s ease;
}

html[dir="rtl"] .site-nav > a:not(.nav-cta-mobile)::after {
  transform-origin: right center;
}

.site-nav > a:not(.nav-cta-mobile):hover::after,
.site-nav > a:not(.nav-cta-mobile):focus-visible::after,
.site-nav > a.is-active:not(.nav-cta-mobile)::after {
  transform: scaleX(1);
}

.site-nav > a:hover,
.site-nav > a:focus-visible {
  color: #f3e8ff;
}

.site-nav .nav-extra {
  display: none;
}

.nav-login {
  position: relative;
  text-decoration: none;
  color: #ffffff;
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
}

.nav-login::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -5px;
  height: 1.5px;
  background: #ffffff;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s ease;
}

html[dir="rtl"] .nav-login::after {
  transform-origin: right center;
}

.nav-login:hover::after,
.nav-login:focus-visible::after {
  transform: scaleX(1);
}

.nav-cta-wrap {
  display: inline-flex;
  flex-shrink: 0;
}

.nav-cta-wrap .nav-cta,
.site-header .nav-cta {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  text-decoration: none;
  border: 0 !important;
  border-radius: 50px !important;
  padding: 12px 26px !important;
  background: #000000 !important;
  background-image: none !important;
  color: #ffffff !important;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
  transform: none !important;
  box-shadow: none !important;
  transition: color 0.25s ease;
}

.nav-cta-wrap .nav-cta::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: #a068ff;
  transform: translateX(-100%);
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.nav-cta-wrap .nav-cta:hover::after,
.nav-cta-wrap .nav-cta:focus-visible::after {
  transform: translateX(0);
}

.nav-cta-wrap .nav-cta:hover,
.nav-cta-wrap .nav-cta:focus-visible {
  color: #ffffff !important;
}

.menu-btn {
  display: none;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(160, 104, 255, 0.35);
  border-radius: 12px;
  background: rgba(18, 12, 36, 0.75);
  color: #fff;
  cursor: pointer;
}

.menu-btn-bars {
  display: grid;
  gap: 5px;
  width: 18px;
}

.menu-btn-bars i {
  display: block;
  height: 2px;
  width: 100%;
  border-radius: 2px;
  background: currentColor;
  transition:
    transform 0.3s ease,
    opacity 0.3s ease;
}

.menu-btn[aria-expanded="true"] .menu-btn-bars i:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-btn[aria-expanded="true"] .menu-btn-bars i:nth-child(2) {
  opacity: 0;
}

.menu-btn[aria-expanded="true"] .menu-btn-bars i:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.lang-switch {
  border-color: rgba(160, 104, 255, 0.35);
  background: rgba(10, 6, 24, 0.85);
}

.lang-btn.active {
  background: #a068ff;
  color: #fff;
}

@media (max-width: 1280px) {
  .site-nav {
    gap: 18px;
  }
}

@media (max-width: 1024px) {
  .site-header {
    padding: 12px clamp(12px, 3vw, 28px);
  }

  .brand img {
    height: 44px !important;
    max-width: min(180px, 46vw) !important;
  }

  .site-nav {
    gap: 14px;
  }

  .site-nav > a {
    font-size: 14px;
  }

  .nav-cta-wrap .nav-cta {
    padding: 10px 18px !important;
    font-size: 14px;
  }
}

@media (max-width: 920px) {
  .site-header {
    display: flex;
    justify-content: space-between;
    padding: 10px max(12px, env(safe-area-inset-inline-start, 0px)) 10px
      max(12px, env(safe-area-inset-inline-end, 0px));
    flex-wrap: nowrap;
    gap: 10px;
  }

  .header-left {
    flex: 1;
    min-width: 0;
    gap: 0;
    justify-self: auto;
  }

  .header-right {
    gap: 10px;
    justify-self: auto;
  }

  .brand img {
    height: 42px !important;
    max-width: min(168px, 52vw) !important;
  }

  .menu-btn {
    display: grid;
  }

  .nav-login,
  .nav-cta-wrap {
    display: none;
  }

  .site-nav {
    position: fixed;
    top: calc(72px + env(safe-area-inset-top, 0px));
    left: max(12px, env(safe-area-inset-inline-start, 0px));
    right: max(12px, env(safe-area-inset-inline-end, 0px));
    z-index: 55;
    display: none;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 2px;
    grid-column: auto;
    justify-self: auto;
    padding: 12px;
    max-height: min(70vh, calc(100dvh - 90px));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    border: 1px solid rgba(160, 104, 255, 0.28);
    border-radius: 16px;
    background: rgba(10, 6, 24, 0.96);
    backdrop-filter: blur(16px);
    box-shadow: 0 20px 48px rgba(0, 0, 0, 0.45);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav .nav-extra {
    display: flex;
  }

  .site-nav > a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 10px 12px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 10px;
  }

  .site-nav > a::after {
    display: none !important;
  }

  .site-nav > a:hover,
  .site-nav > a:focus-visible {
    background: rgba(160, 104, 255, 0.14);
  }

  .site-nav .nav-cta-mobile {
    margin-top: 8px;
    justify-content: center;
    border-radius: 50px !important;
    background: #000 !important;
    color: #fff !important;
    font-weight: 600;
  }
}

@media (max-width: 640px) {
  .brand img {
    height: 40px !important;
    max-width: min(160px, 55vw) !important;
  }

  .lang-btn {
    padding: 8px 10px;
    font-size: 0.78rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header {
    animation: none;
  }

  .site-nav > a::after,
  .nav-login::after,
  .nav-cta-wrap .nav-cta::after,
  .menu-btn-bars i {
    transition: none;
  }
}