/* ============ RESET & BASE ============ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --clr-white: #FFFFFF;
  --clr-navy: #00173C;
  --clr-red: #B40000;
  --clr-black: #0A0A0A;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: 'Poppins', sans-serif;
  color: var(--clr-black);
  /* background: var(--clr-white); */
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ============ TOP BAR ============ */
.topbar {
  background: var(--clr-navy);
  color: var(--clr-white);
  font-size: 13px;
  font-weight: 400;
  ;
  min-height: 5vh;
  width: 100%;
}

.topbar__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 8px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.topbar__left {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.topbar__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--clr-white);
  opacity: 0.92;
  transition: opacity var(--transition), color var(--transition);
}

.topbar__item:hover {
  opacity: 1;
  color: var(--clr-red);
}

.topbar__icon {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

.topbar__right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar__social {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform var(--transition), color var(--transition);
}

.topbar__social svg {
  width: 14px;
  height: 14px;
  fill: var(--clr-white);
  transition: fill var(--transition);
}

.topbar__social:hover {
  background: var(--clr-red);
  transform: translateY(-2px);
}

/* ============ MAIN HEADER ============ */
.header {
  position: fixed;
  /* sits below topbar initially */
  left: 0;
  width: 100%;
  background: var(--clr-white);
  z-index: 999;
  box-shadow: 0 2px 16px rgba(0, 23, 60, 0.08);
  transition: top var(--transition), box-shadow var(--transition), padding var(--transition);
}

.header.is-scrolled {
  top: 0;
  box-shadow: 0 4px 20px rgba(0, 23, 60, 0.14);
}

.header__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  transition: padding var(--transition);
}

.header.is-scrolled .header__container {
  padding: 8px 24px;
}

.header__logo {
  flex-shrink: 0;
  display: block;
}

.header__logo img {
  width: 170px;
  height: auto;
  aspect-ratio: 1265 / 556;
  object-fit: contain;
  transition: width var(--transition);
}

.header.is-scrolled .header__logo img {
  width: 140px;
}

/* ============ NAV ============ */
.nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__item {
  position: relative;
}

.nav__link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 10px 18px;


  font-size: 15px;
  font-weight: 500;
  color: var(--clr-navy);
  position: relative;
  white-space: nowrap;
  transition: color var(--transition);
}

.nav__link::after {
  content: '';
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 4px;
  height: 2px;
  background: var(--clr-red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.nav__link:hover,
.nav__item--dropdown:hover > .nav__link {
  color: var(--clr-red);
}

.nav__link:hover::after,
.nav__item--dropdown:hover > .nav__link::after {
  transform: scaleX(1);
}

.nav__caret {
  width: 12px;
  height: 12px;
  transition: transform var(--transition);
}

.nav__item--dropdown:hover .nav__caret {
  transform: rotate(180deg);
}

/* ---- Simple dropdown (Products) ---- */
.dropdown {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  min-width: 320px;
  background: var(--clr-white);
  border-top: 3px solid var(--clr-red);
  box-shadow: 0 18px 40px rgba(0, 23, 60, 0.16);
  border-radius: 0 0 8px 8px;
  padding: 10px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 20;
}

.nav__item--dropdown:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown li a {
  display: block;
  padding: 11px 24px;
  border-bottom: 1px solid rgb(179, 178, 178);
  font-size: 14px;
  font-weight: 400;
  color: var(--clr-navy);
  /* border-left: 3px solid transparent; */
  transition: background var(--transition), color var(--transition), border-color var(--transition), padding-left var(--transition);
}

.dropdown li a:hover {
  background: #f5f7fa;
  color: var(--clr-red);
  border-left-color: var(--clr-red);
  padding-left: 30px;
}

/* ============ ACTIONS (Download button) ============ */
.header__actions {
  flex-shrink: 0;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--clr-red);
  color: var(--clr-white);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 4px;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn-download svg {
  width: 16px;
  height: 16px;
  stroke: var(--clr-white);
}

.btn-download:hover {
  background: var(--clr-navy);
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(0, 23, 60, 0.25);
}

/* ============ HAMBURGER (mobile) ============ */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--clr-navy);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition), background var(--transition);
}

.hamburger.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background: var(--clr-red);
}

.hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--clr-red);
}

/* ============ SPACER ============ */
.header-spacer {
  height: 103.5px;
}

/* ============================================================
   TABLET
   ============================================================ */
@media (max-width: 1024px) {
  .nav__link {
    padding: 10px 12px;
    font-size: 14px;
  }

  .header__actions .btn-download span {
    display: none;
  }

  .btn-download {
    padding: 12px;
  }

  .btn-download svg {
    width: 18px;
    height: 18px;
  }
}

/* ============================================================
   MOBILE + TABLET NAV COLLAPSE
   ============================================================ */
@media (max-width: 900px) {
  .topbar__left {
    gap: 14px;
  }

  .topbar__item span {
    font-size: 12px;
  }

  .hamburger {
    display: flex;
  }

  .header__actions {
    order: 3;
  }

  .header__container {
    flex-wrap: wrap;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(360px, 85vw);
    height: 100vh;
    background: var(--clr-navy);
    flex-direction: column;
    justify-content: flex-start;
    padding: 100px 0 40px;
    overflow-y: auto;
    transition: right var(--transition);
    z-index: 1000;
  }

  .nav.is-open {
    right: 0;
    box-shadow: -12px 0 40px rgba(0, 0, 0, 0.3);
  }

  .nav__list {
    flex-direction: column;
    width: 100%;
    align-items: stretch;
    gap: 0;
  }

  .nav__item {
    width: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav__link {
    color: var(--clr-white);
    padding: 16px 28px;
    justify-content: space-between;
    width: 100%;
  }

  .nav__link::after {
    display: none;
  }

  .nav__link:hover,
  .nav__item--dropdown:hover > .nav__link {
    color: var(--clr-red);
  }

  /* Dropdown becomes accordion on mobile */
  .dropdown {
    position: static;
    min-width: 100%;
    box-shadow: none;
    border-top: none;
    border-radius: 0;
    background: rgba(255, 255, 255, 0.04);
    opacity: 1;
    visibility: visible;
    transform: none;
    max-height: 0;
    padding: 0;
    overflow: hidden;
    transition: max-height var(--transition), padding var(--transition);
  }

  .nav__item--dropdown.is-open .dropdown {
    max-height: 600px;
    padding: 6px 0;
  }

  .nav__item--dropdown:hover .dropdown {
    max-height: 0; /* disable hover-trigger on touch devices */
  }

  .nav__item--dropdown.is-open:hover .dropdown {
    max-height: 600px;
  }

  .dropdown li a {
    color: rgba(255, 255, 255, 0.85);
    padding: 12px 40px;
    font-size: 13.5px;
  }

  .dropdown li a:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--clr-white);
    border-left-color: var(--clr-red);
  }

  .nav__caret {
    stroke: var(--clr-white);
  }

  .nav__item--dropdown.is-open .nav__caret {
    transform: rotate(180deg);
  }

  /* overlay behind mobile nav */
  .nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
    z-index: 998;
  }

  .nav-overlay.is-open {
    opacity: 1;
    visibility: visible;
  }
}

@media (max-width: 900px) and (min-width: 601px) {
  .header-spacer {
    height: 105px;
  }
}

/* ============================================================
   SMALL MOBILE
   ============================================================ */
@media (max-width: 600px) {
  .topbar{
display: none;
  }
  .header__actions {
    display: none;
  }
  .topbar__left {
    justify-content: center;
    width: 100%;
    gap: 8px 16px;
  }

  .topbar__right {
    display: none;
  }

  .header__logo img {
    width: 130px;
  }

  .header.is-scrolled .header__logo img {
    width: 115px;
  }

  .header__container {
    padding: 12px 16px;
  }

  .btn-download {
    padding: 10px;
  }

  .header-spacer {
    height: 85px;
    
  }
}

@media (max-width: 380px) {
  .topbar__item span {
    font-size: 11px;
  }

  .header__logo img {
    width: 110px;
  }
}