/* ==========================================================================
   Header (sticky pill)
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--header-top) 36px 0;
  pointer-events: none;
}

.site-header__inner {
  height: var(--header-h);
  padding: 24px;
  border-radius: 100px;
  background: var(--c-white);
  pointer-events: auto;
  transition: box-shadow 0.3s var(--ease);
}

.site-header__bar {
  display: flex;
  align-items: center;
  gap: 10px;
  /* Content width inside the pill at 1440: 1368 - 36 - 24 */
  max-width: calc(var(--content-max) + 12px);
  height: 100%;
  margin-inline: auto;
}

.site-header.is-scrolled .site-header__inner {
  box-shadow: 0 12px 40px rgba(17, 24, 42, 0.08);
}

.site-header__logo,
.site-header__actions {
  flex: 0 0 118px;
}

.site-header__logo img {
  width: 118px;
  height: 40px;
}

.site-header__nav {
  flex: 1 1 auto;
}

.site-header__menu {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
}

.site-header__menu a {
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-nav);
  transition: color 0.2s var(--ease);
}

.site-header__menu a:hover {
  color: var(--c-orange);
}

.site-header__actions {
  display: flex;
  justify-content: flex-end;
}

/* --------------------------------------------------------------------------
   Burger (tablet / mobile)
   Bars follow the design icon: 12.5 × 1.25px, 4.875px apart, black.
   Open: the outer bars slide to the middle, then turn into a cross.
   Close: the cross unturns first, then the bars slide apart.
   -------------------------------------------------------------------------- */
.site-header__burger {
  --bar-gap: 4.875px;
  --burger-step: 0.18s;

  display: none;
  flex: none;
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--c-bg-alt);
  color: #000;
  transition: background-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.site-header__burger:hover {
  background: #e6e6e6;
}

.site-header__burger:active {
  transform: scale(0.94);
}

/* middle bar */
.site-header__burger span {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12.5px;
  height: 1.25px;
  margin: -0.625px 0 0 -6.25px;
  border-radius: 0.25px;
  background: currentColor;
  transition: background-color 0s var(--burger-step);
}

/* top and bottom bars */
.site-header__burger span::before,
.site-header__burger span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: currentColor;
  transition:
    transform var(--burger-step) var(--ease),
    top var(--burger-step) var(--ease) var(--burger-step);
}

.site-header__burger span::before {
  top: calc(-1 * var(--bar-gap));
}

.site-header__burger span::after {
  top: var(--bar-gap);
}

.site-header__burger[aria-expanded="true"] span {
  background-color: transparent;
  transition-delay: var(--burger-step);
}

.site-header__burger[aria-expanded="true"] span::before,
.site-header__burger[aria-expanded="true"] span::after {
  top: 0;
  transition:
    top var(--burger-step) var(--ease),
    transform var(--burger-step) cubic-bezier(0.5, 1.6, 0.5, 1) var(--burger-step);
}

.site-header__burger[aria-expanded="true"] span::before {
  transform: rotate(45deg);
}

.site-header__burger[aria-expanded="true"] span::after {
  transform: rotate(-45deg);
}

/* Dropdown menu + page dimmer (tablet / mobile only) */
.mobile-menu,
.menu-backdrop {
  display: none;
}

@media (max-width: 1199px) {
  .site-header__nav {
    display: none;
  }

  .site-header__logo {
    flex: none;
  }

  .site-header__actions {
    flex: 1 1 auto;
    align-items: center;
    gap: 16px;
  }

  .site-header__burger {
    display: block;
  }

  /* Floats over the page under the header pill: out of the flow, so opening
     it never moves the content below. */
  .mobile-menu {
    --menu-ease-in: cubic-bezier(0.16, 1, 0.3, 1);     /* soft ease-out for opening */
    --menu-ease-out: cubic-bezier(0.4, 0, 0.6, 1);     /* gentle ease for closing */

    display: block;
    position: absolute;
    top: calc(100% + 8px);
    left: 36px;
    right: 36px;
    max-width: calc(var(--content-max) + 72px);
    margin-inline: auto;
    padding: 12px 24px 24px;
    border-radius: 32px;
    background: var(--c-white);
    box-shadow: 0 24px 48px rgba(17, 24, 42, 0.12);
    pointer-events: auto;
    transform-origin: calc(100% - 42px) 0;   /* grows from under the burger */
    opacity: 0;
    transform: translateY(-12px) scale(0.97);
    transition:
      opacity 0.45s var(--menu-ease-out),
      transform 0.5s var(--menu-ease-out);
  }

  .mobile-menu[hidden] {
    display: none;
  }

  .mobile-menu.is-open {
    opacity: 1;
    transform: none;
    transition:
      opacity 0.6s var(--menu-ease-in),
      transform 0.8s var(--menu-ease-in);
  }

  /* Items drift in one after another; on close they fade out softly together */
  .mobile-menu__list li,
  .mobile-menu__cta {
    opacity: 0;
    transform: translateY(8px);
    transition:
      opacity 0.3s var(--menu-ease-out),
      transform 0.4s var(--menu-ease-out),
      background-color 0.25s var(--ease);
  }

  .mobile-menu.is-open .mobile-menu__list li,
  .mobile-menu.is-open .mobile-menu__cta {
    opacity: 1;
    transform: none;
    transition:
      opacity 0.6s var(--menu-ease-in),
      transform 0.8s var(--menu-ease-in),
      background-color 0.25s var(--ease);
  }

  .mobile-menu.is-open .mobile-menu__list li:nth-child(1) { transition-delay: 0.1s, 0.1s, 0s; }
  .mobile-menu.is-open .mobile-menu__list li:nth-child(2) { transition-delay: 0.16s, 0.16s, 0s; }
  .mobile-menu.is-open .mobile-menu__list li:nth-child(3) { transition-delay: 0.22s, 0.22s, 0s; }
  .mobile-menu.is-open .mobile-menu__cta { transition-delay: 0.28s, 0.28s, 0s; }

  .mobile-menu__list a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid #ededed;
    font-size: 18px;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--c-dark);
    transition: color 0.2s var(--ease);
  }

  /* small arrow that slides in on hover */
  .mobile-menu__list a::after {
    content: "→";
    font-size: 16px;
    color: var(--c-orange);
    opacity: 0;
    transform: translateX(-8px);
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
  }

  .mobile-menu__list a:hover,
  .mobile-menu__list a:focus-visible {
    color: var(--c-orange);
  }

  .mobile-menu__list a:hover::after,
  .mobile-menu__list a:focus-visible::after {
    opacity: 1;
    transform: none;
  }

  .mobile-menu__cta {
    margin-top: 24px;
  }

  /* Page dimmer behind the menu (inside the header's stacking context) */
  .menu-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: -1;
    background: rgba(17, 24, 42, 0.32);
    -webkit-backdrop-filter: blur(3px);
    backdrop-filter: blur(3px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s var(--ease);
  }

  .site-header.is-menu-open .menu-backdrop {
    opacity: 1;
    pointer-events: auto;
    transition-duration: 0.6s;
  }
}

@media (max-width: 767px) {
  .site-header {
    padding: 0;
  }

  .site-header__inner {
    padding: 16px 20px;
  }

  .site-header__cta {
    display: none;
  }

  .mobile-menu {
    left: 6px;
    right: 6px;
    padding: 8px 20px 20px;
    border-radius: 24px;
    transform-origin: calc(100% - 32px) 0;   /* under the burger on mobile */
  }

  .mobile-menu__cta {
    justify-content: space-between;
    width: 100%;
    height: 56px;
    padding: 0 20px;
    --btn-icon: 32px;
    --btn-arrow: 12px;
  }
}