/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--navy-blue);
  padding: 1rem 0;
  box-shadow: var(--shadow-header);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--white);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
}

.header__logo img,
.header__logo svg {
  height: 40px;
  width: auto;
}

.header__nav {
  display: none;
  align-items: center;
  gap: 2rem;
}

.header__nav a {
  color: var(--white);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  transition: color var(--transition);
}

.header__nav a:hover,
.header__nav a.active {
  color: var(--profit-green);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.currency-toggle {
  display: none;
  align-items: center;
  gap: 0.25rem;
  padding: 0.35rem 0.75rem;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition);
}

.currency-toggle:hover {
  color: var(--white);
  border-color: var(--profit-green);
}

.header__cta {
  display: none;
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px 0;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}

.hamburger.is-open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.is-open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--navy-blue);
  z-index: 999;
  padding: 2rem;
  overflow-y: auto;
}

.mobile-menu.is-open {
  display: flex;
  flex-direction: column;
}

.mobile-menu a {
  display: block;
  padding: 1rem 0;
  color: var(--white);
  font-size: var(--fs-lg);
  font-weight: var(--fw-medium);
  border-bottom: 1px solid var(--border-dark);
}

.mobile-menu a.active {
  color: var(--profit-green);
}

.mobile-menu__actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

.mobile-menu__currency {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--fs-sm);
}

.mobile-menu__currency button {
  padding: 0.35rem 0.75rem;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  cursor: pointer;
}

/* Desktop */
@media (min-width: 768px) {
  .header__logo img,
  .header__logo svg {
    height: 50px;
  }

  .header__nav {
    display: flex;
  }

  .currency-toggle {
    display: flex;
  }

  .header__cta {
    display: inline-flex;
  }

  .hamburger {
    display: none;
  }
}

/* Spacer to push content below fixed header */
.header-spacer {
  height: var(--header-height);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--navy-blue);
  color: rgba(255, 255, 255, 0.7);
  padding: 4rem 0 2rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer__brand {
  max-width: 320px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--white);
  margin-bottom: 1rem;
}

.footer__logo img,
.footer__logo svg {
  height: 36px;
  width: auto;
}

.footer__tagline {
  font-size: var(--fs-sm);
  line-height: var(--lh-base);
}

.footer__col h4 {
  color: var(--profit-green);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.footer__col a {
  display: block;
  padding: 0.25rem 0;
  font-size: var(--fs-sm);
  opacity: 0.8;
  transition: opacity var(--transition);
}

.footer__col a:hover {
  opacity: 1;
  color: var(--white);
}

.footer__bottom {
  border-top: 1px solid var(--border-dark);
  padding-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: var(--fs-xs);
}

@media (min-width: 640px) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr;
  }

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}