.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: linear-gradient(135deg, #04633b, #023020);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
}

.site-header__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: #fff;
  min-width: 0;
  flex-shrink: 0;
}

.site-header__logo {
  width: 58px;
  height: 58px;
  object-fit: cover;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.18);
  flex-shrink: 0;
}

.site-header__title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.2px;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__item {
  display: flex;
  align-items: center;
}

.site-nav__link {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 999px;
  color: #fff;
  font-weight: 600;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.site-nav__link:hover,
.site-nav__link:focus {
  background: rgba(255, 255, 255, 0.18);
  color: #fff8dc;
  transform: translateY(-1px);
}

.site-nav__link:focus-visible,
.donate-button:focus-visible,
.site-header__toggle:focus-visible {
  outline: 2px solid rgba(255, 209, 102, 0.95);
  outline-offset: 2px;
}

.site-nav__link.is-active {
  background: #ffd166;
  color: #6b1f29;
}

.donate-form {
  margin: 0;
}

.donate-button {
  border: none;
  background: #ffd166;
  color: #5a1d26;
  font-weight: 700;
  font-size: 0.98rem;
  padding: 11px 18px;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.14);
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.donate-button:hover,
.donate-button:focus {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.18);
  opacity: 0.96;
}

.site-header__toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: none;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.14);
  cursor: pointer;
  padding: 10px;
  flex-shrink: 0;
}

.site-header__toggle-bar {
  display: block;
  width: 100%;
  height: 3px;
  background: #fff;
  border-radius: 999px;
  margin: 5px 0;
}

@media (max-width: 900px) {
  .site-header__inner {
    flex-wrap: wrap;
  }

  .site-header__toggle {
    display: block;
  }

  .site-nav {
    width: 100%;
  }

  .site-nav__list {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding-top: 12px;
  }

  .site-nav__list.is-open {
    display: flex;
  }

  .site-nav__item {
    width: 100%;
  }

  .site-nav__link,
  .donate-button {
    width: 100%;
    text-align: center;
  }

  .site-nav__link {
    background: rgba(255, 255, 255, 0.08);
  }

  .site-header__title {
    font-size: 1rem;
    white-space: normal;
  }
}