:root {
  --nav-bg: #ffffff;
  --nav-text: #333333;
  --nav-accent: #F35454;
  --nav-accent-dark: #c04040;
  --nav-hover-bg: #fff5f5;
  --nav-border: #e8e8e8;
  --nav-shadow: 0 2px 8px rgba(0,0,0,0.09);
  --nav-height: 58px;
  --dropdown-shadow: 0 6px 18px rgba(0,0,0,0.12);
}

/* ── Main bar ──────────────────────────────────────────── */

#site-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--nav-bg);
  border-bottom: 3px solid var(--nav-accent);
  box-shadow: var(--nav-shadow);
  font-family: Calibri, Tahoma, Arial, sans-serif;
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  gap: 12px;
}

/* ── Brand / Logo ───────────────────────────────────────── */

.nav-brand {
  font-size: 14px;
  font-weight: 700;
  color: var(--nav-accent);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  letter-spacing: 0.3px;
}

.nav-brand:hover,
.nav-brand:focus {
  color: var(--nav-accent-dark);
  text-decoration: none;
}

/* ── Menu list ──────────────────────────────────────────── */

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: stretch;
  flex-wrap: nowrap;
}

.nav-menu > li {
  position: relative;
}

.nav-menu > li > a {
  display: flex;
  align-items: center;
  padding: 0 13px;
  height: var(--nav-height);
  color: var(--nav-text);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  box-sizing: border-box;
  transition: color 0.15s, border-color 0.15s;
}

.nav-menu > li > a:hover,
.nav-menu > li.active > a,
.nav-menu > li:focus-within > a {
  color: var(--nav-accent);
  border-bottom-color: var(--nav-accent);
  text-decoration: none;
}

/* ── Dropdown arrow indicator ───────────────────────────── */

.nav-menu > .has-dropdown > a::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  margin-left: 5px;
  opacity: 0.55;
  flex-shrink: 0;
  transition: transform 0.18s;
}

.nav-menu > .has-dropdown:hover > a::after,
.nav-menu > .has-dropdown:focus-within > a::after {
  transform: rotate(-180deg);
  opacity: 0.8;
}

/* ── Dropdown panel ─────────────────────────────────────── */

.dropdown {
  position: absolute;
  top: calc(100% + 3px);
  left: 0;
  min-width: 210px;
  background: #ffffff;
  border-top: 2px solid var(--nav-accent);
  box-shadow: var(--dropdown-shadow);
  list-style: none;
  padding: 5px 0;
  margin: 0;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 1010;
  border-radius: 0 0 4px 4px;
}

.has-dropdown:hover > .dropdown,
.has-dropdown:focus-within > .dropdown {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.dropdown li a {
  display: block;
  padding: 9px 18px;
  color: #444;
  text-decoration: none;
  font-size: 13px;
  transition: background 0.12s, color 0.12s;
  border-left: 3px solid transparent;
}

.dropdown li a:hover,
.dropdown li a:focus {
  background: var(--nav-hover-bg);
  color: var(--nav-accent);
  border-left-color: var(--nav-accent);
  text-decoration: none;
}

/* ── Nested dropdown (e.g. Projekte under Schulleben) ───── */

.dropdown .has-dropdown {
  position: relative;
}

.dropdown .has-dropdown > a::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 5px solid currentColor;
  margin-left: auto;
  padding-left: 8px;
  opacity: 0.55;
}

.dropdown .dropdown {
  top: -7px;
  left: 100%;
  border-top: none;
  border-left: 2px solid var(--nav-accent);
  border-radius: 0 4px 4px 4px;
}

/* ── Hamburger button ───────────────────────────────────── */

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--nav-border);
  border-radius: 4px;
  cursor: pointer;
  padding: 8px 7px;
  flex-shrink: 0;
  transition: border-color 0.15s;
}

.nav-hamburger:hover {
  border-color: var(--nav-accent);
}

.nav-hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--nav-text);
  border-radius: 2px;
  transition: all 0.22s ease;
  transform-origin: center;
}

#site-nav.nav-open .nav-hamburger span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
#site-nav.nav-open .nav-hamburger span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
#site-nav.nav-open .nav-hamburger span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile ─────────────────────────────────────────────── */

@media (max-width: 1150px) {
  .nav-hamburger {
    display: flex;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: #ffffff;
    border-top: 1px solid var(--nav-border);
    box-shadow: 0 6px 16px rgba(0,0,0,0.1);
    flex-direction: column;
    align-items: stretch;
    padding: 6px 0 12px;
    max-height: calc(100vh - var(--nav-height));
    overflow-y: auto;
  }

  #site-nav.nav-open .nav-menu {
    display: flex;
  }

  .nav-menu > li > a {
    height: auto;
    padding: 11px 20px;
    border-bottom: none;
    border-left: 3px solid transparent;
    font-size: 15px;
  }

  .nav-menu > li > a:hover,
  .nav-menu > li.active > a {
    border-bottom: none;
    border-left-color: var(--nav-accent);
  }

  .nav-menu > .has-dropdown > a::after {
    border-top: 5px solid currentColor;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    margin-left: auto;
    transition: transform 0.18s;
  }

  .nav-menu > .has-dropdown.is-open > a::after {
    transform: rotate(-180deg);
  }

  /* Mobile dropdowns expand inline */
  .dropdown {
    position: static;
    opacity: 1 !important;
    pointer-events: all !important;
    transform: none !important;
    box-shadow: none;
    border-top: none;
    border-left: 3px solid var(--nav-accent);
    border-radius: 0;
    background: #fafafa;
    padding: 2px 0;
    margin-left: 20px;
    display: none;
  }

  .has-dropdown.is-open > .dropdown {
    display: block;
  }

  /* Override the :hover/:focus-within rule on mobile */
  .has-dropdown:hover > .dropdown,
  .has-dropdown:focus-within > .dropdown {
    opacity: 1;
    pointer-events: all;
    transform: none;
    display: none;
  }

  .has-dropdown.is-open > .dropdown {
    display: block !important;
  }

  .dropdown .has-dropdown > a::after {
    border-left: 5px solid currentColor;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    padding-left: 0;
    margin-left: auto;
  }

  .dropdown .has-dropdown.is-open > a::after {
    transform: rotate(90deg);
  }

  .dropdown .dropdown {
    left: auto;
    border-left: 3px solid var(--nav-accent);
    margin-left: 16px;
  }

  .dropdown li a {
    font-size: 14px;
    padding: 8px 16px;
  }
}