/* ================== Header ================== */
.site-header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo img {
  height: 40px;
}

/* ====== Desktop Nav ====== */
.nav__list {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__list a {
  text-decoration: none;
  color: var(--ink);
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
}

.nav__list a.is-active,
.nav__list a:hover {
  color: var(--green-3);
}

.nav__list a.is-active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--green-3);
}

/* ====== Toggle (hidden on desktop) ====== */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--ink);
}

/* ================== Mobile ================== */
@media (max-width: 768px) {   /* adjust breakpoint as needed */
  html, body {
    overflow-x: hidden;  /* stop left-right scroll */
    width: 100%;
  }

  * {
    max-width: 100%;   /* keep elements from overflowing */
    box-sizing: border-box;
  }
}

@media (max-width: 960px) {
  .nav__toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    background: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 200;
  }

  /* Collapsed menu by default */
  #primary-menu {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    background: #fff;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.08);

    /* animation states */
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transform: translateY(-10px);
    transition: max-height 0.4s ease, opacity 0.35s ease, transform 0.35s ease, padding 0.35s ease;
    padding: 0 20px; /* keep horizontal padding */
  }

  /* Expanded state */
  #primary-menu.is-open {
    max-height: 500px; /* enough to fit all links */
    opacity: 1;
    transform: translateY(0);
    padding: 12px 20px; /* vertical padding animates smoothly */
    display: flex;
  }

  #primary-menu li + li {
    border-top: 1px solid rgba(0, 0, 0, 0.06);
  }

  #primary-menu a {
    display: block;
    padding: 12px 0;
  }
}

/* ================== Desktop Reset ================== */
@media (min-width: 961px) {
  .nav__toggle {
    display: none;
  }

  #primary-menu {
    position: static;
    display: flex !important;
    flex-direction: row;
    gap: 2rem;
    box-shadow: none;
    max-height: none;
    opacity: 1;
    transform: none;
    padding: 0;
    border: 0;
  }
}