/* Short pages keep the scrollbar so the layout does not jump between pages. */
html {
  overflow-y: scroll;
}

/* Shared navigation, using the Awards page's dimensions on every page. */
.page-header,
.sponsor-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 56px);
  color: #fff;
  background: linear-gradient(180deg, rgba(7, 9, 13, 0.86), rgba(7, 9, 13, 0));
  font-family: inherit;
  font-size: 16px;
  line-height: normal;
  letter-spacing: 0;
}

.brand {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand img {
  width: 46px;
  height: 46px;
  object-fit: contain;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.1;
}

.brand strong {
  font-size: 16px;
  font-weight: 700;
}

.brand small {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
}

.page-header .nav,
.sponsor-header .nav {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: clamp(14px, 2vw, 30px);
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  font-weight: 600;
}

.nav button {
  padding: 0;
  border: 0;
  color: inherit;
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.page-header .nav button.active {
  color: inherit;
}

.page-header .nav button.active::after {
  content: none;
}

.nav a:hover,
.nav button:hover {
  color: #fff;
}

.nav-item {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  z-index: 5;
  display: grid;
  min-width: 180px;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(12, 15, 20, 0.96);
  opacity: 0;
  transform: translateX(-50%) translateY(-6px);
  pointer-events: none;
  transition: opacity 150ms ease, transform 150ms ease;
}

/* Keep the menu open while the pointer crosses the space below its button. */
.dropdown-menu::before {
  position: absolute;
  inset: -15px 0 100%;
  content: "";
}

.dropdown-menu a {
  padding: 10px 12px;
  color: rgba(255, 255, 255, 0.78);
  white-space: nowrap;
}

.dropdown-menu a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* ---------- Hamburger toggle ---------- */
.nav-toggle {
  display: none;
  position: relative;
  z-index: 12;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  position: absolute;
  left: 50%;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transform: translateX(-50%);
  transition: transform 200ms ease, opacity 160ms ease;
}

.nav-toggle span:nth-child(1) {
  top: 14px;
}

.nav-toggle span:nth-child(2) {
  top: 21px;
}

.nav-toggle span:nth-child(3) {
  top: 28px;
}

.nav-toggle.open span:nth-child(1) {
  top: 21px;
  transform: translateX(-50%) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  top: 21px;
  transform: translateX(-50%) rotate(-45deg);
}

/* ---------- Mobile drawer ---------- */
@media (max-width: 760px) {
  .page-header,
  .sponsor-header {
    align-items: center;
    flex-direction: row;
  }

  .nav-toggle {
    display: block;
  }

  /* Page styles hide `nav` on mobile — the shared sheet loads last, so this wins. */
  .page-header .nav,
  .sponsor-header .nav {
    display: flex;
    position: fixed;
    top: 82px;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 11;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 18px 20px 40px;
    background: #0a0d12;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    transform: translateY(-10px);
    visibility: hidden;
    pointer-events: none;
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms;
  }

  .page-header .nav.open,
  .sponsor-header .nav.open {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
    pointer-events: auto;
  }

  /* Lock the page behind the drawer. */
  body.nav-open {
    overflow: hidden;
  }

  .nav > a,
  .nav > .nav-item {
    flex: none;
  }

  .nav > a {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 0 4px;
    font-size: 16px;
  }

  .nav-item {
    display: block;
  }

  .nav-item > button {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    min-height: 48px;
    color: rgba(255, 255, 255, 0.82);
    font-size: 16px;
    font-weight: 700;
    text-align: left;
  }

  .page-header .nav .nav-item > button::after,
  .sponsor-header .nav .nav-item > button::after {
    content: "";
    width: 8px;
    height: 8px;
    margin-right: 4px;
    border-right: 2px solid rgba(255, 255, 255, 0.55);
    border-bottom: 2px solid rgba(255, 255, 255, 0.55);
    transform: rotate(45deg);
  }

  /* Dropdowns collapse by default; site.js toggles .open on the .nav-item. */
  .page-header .nav .dropdown-menu,
  .sponsor-header .nav .dropdown-menu {
    position: static;
    display: none;
    min-width: 0;
    padding: 0 0 4px 14px;
    border: 0;
    background: transparent;
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }

  .page-header .nav .nav-item.open > .dropdown-menu,
  .sponsor-header .nav .nav-item.open > .dropdown-menu {
    display: block;
  }

  .page-header .nav .nav-item.open > button::after,
  .sponsor-header .nav .nav-item.open > button::after {
    transform: rotate(225deg);
  }

  .dropdown-menu::before {
    content: none;
  }

  .dropdown-menu a,
  .dropdown-menu.projects-menu a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 0 4px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 15px;
    white-space: normal;
  }
}