/* =========================
   Navbar / Header
========================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 0.75rem 0 0.85rem;
}

/* äußere Begrenzung (nicht volle Breite) */
.nav-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Glass Navbar */
.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;

  padding: 0.7rem 1.3rem;

  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));

  border-radius: var(--radius-pill);
  border: 1px solid var(--border);

  box-shadow: var(--shadow-strong);
}

/* =========================
   Brand / Logo
========================= */

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-1);
}

.brand-name {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* =========================
   Navigation Links
========================= */

.nav-center {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav-links {
  display: flex;
  gap: 1.1rem;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-2);
  font-size: 0.95rem;
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: background var(--t-med), color var(--t-med);
}

.nav-links a:hover {
  background: rgba(15, 23, 42, 0.85);
  color: var(--text-1);
}

/* =========================
   Dropdown / Submenu
========================= */

.nav-item-has-children {
  position: relative;
}

.submenu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%, 8px);

  min-width: 190px;
  padding: 0.4rem 0;

  background: var(--glass-bg-strong);
  backdrop-filter: blur(14px);

  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);

  box-shadow: var(--shadow-strong);

  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease, transform 0.15s ease;
  z-index: 40;
}

.nav-item-has-children:hover .submenu {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.submenu li {
  list-style: none;
}

.submenu a {
  display: block;
  padding: 0.45rem 0.95rem;
  font-size: 0.9rem;
  color: var(--text-2);
}

.submenu a:hover {
  background: rgba(30, 64, 175, 0.75);
  color: var(--text-1);
}

/* =========================
   Social Icons (rechts)
========================= */

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

.social-icons {
  display: flex;
  gap: 0.45rem;
}

.social-icons a {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-pill);

  display: flex;
  align-items: center;
  justify-content: center;

  border: 1px solid var(--border-strong);
  background: radial-gradient(
    circle at 30% 20%,
    rgba(15, 23, 42, 0.95),
    rgba(15, 23, 42, 0.7)
  );

  color: var(--text-2);
  font-size: 0.75rem;
  text-decoration: none;

  transition:
    background var(--t-med),
    color var(--t-med),
    border-color var(--t-med),
    transform var(--t-fast);
}

.social-icons a:hover {
  border-color: var(--primary-500);
  background: radial-gradient(circle at 30% 20%, var(--accent-sky-2), var(--accent-sky));
  color: var(--bg-1);
  transform: translateY(-1px);
}

/* =========================
   Responsive
========================= */

@media (max-width: 900px) {
  .nav-bar {
    flex-wrap: wrap;
    row-gap: 0.7rem;
  }

  .nav-center {
    order: 3;
    width: 100%;
    justify-content: center;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-right {
    margin-left: auto;
  }
}

/* =========================
   Mobile Navbar
========================= */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid rgba(148,163,184,0.55);
  background: rgba(2,6,23,0.35);
  color: var(--text-1);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: transform var(--t-fast), border-color var(--t-med), background var(--t-med);
}

.nav-toggle:hover {
  transform: translateY(-1px);
  border-color: rgba(59,130,246,0.75);
  background: rgba(59,130,246,0.12);
}

.nav-toggle-bars {
  width: 18px;
  height: 2px;
  background: var(--text-1);
  display: block;
  border-radius: 2px;
  position: relative;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--text-1);
  border-radius: 2px;
  transition: transform var(--t-med), top var(--t-med), opacity var(--t-med);
}

.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after  { top: 6px; }

.site-header.is-open .nav-toggle-bars {
  background: transparent;
}
.site-header.is-open .nav-toggle-bars::before {
  top: 0;
  transform: rotate(45deg);
}
.site-header.is-open .nav-toggle-bars::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Mobile Panel */
.nav-mobile {
  display: none;
  margin-top: 0.75rem;
  border-radius: 1.2rem;
  border: 1px solid rgba(148,163,184,0.45);
  background: rgba(15,23,42,0.92);
  backdrop-filter: blur(18px);
  box-shadow: 0 22px 60px rgba(15,23,42,0.85);
  overflow: hidden;

  max-height: 0;
  opacity: 0;
  transform: translateY(-6px);
  transition: max-height 320ms ease, opacity 220ms ease, transform 220ms ease;
}

.site-header.is-open .nav-mobile {
  display: block;
  max-height: 70vh;
  opacity: 1;
  transform: translateY(0);
}

.nav-mobile-links {
  list-style: none;
  padding: 0.75rem;
  margin: 0;
  display: grid;
  gap: 0.35rem;
}

.m-item { border-radius: 0.9rem; overflow: hidden; }

.m-link,
.m-parent {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  padding: 0.85rem 0.95rem;
  text-decoration: none;
  color: var(--text-1);
  background: rgba(2,6,23,0.25);
  border: 1px solid rgba(148,163,184,0.12);
  border-radius: 0.9rem;
  cursor: pointer;
  font-weight: 600;
  transition: transform var(--t-fast), border-color var(--t-med), background var(--t-med);
}

.m-link:hover,
.m-parent:hover {
  transform: translateY(-1px);
  border-color: rgba(59,130,246,0.55);
  background: rgba(59,130,246,0.10);
}

.m-sub {
  display: grid;
  gap: 0.3rem;
  padding: 0.6rem 0.95rem 0.85rem;
  background: rgba(2,6,23,0.18);
  border: 1px solid rgba(148,163,184,0.08);
  border-radius: 0.9rem;
  margin-top: 0.35rem;

  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-4px);
  transition: max-height 240ms ease, opacity 180ms ease, transform 180ms ease;
}

.m-item.is-open .m-sub {
  max-height: 300px;
  opacity: 1;
  transform: translateY(0);
}

.m-sub a {
  text-decoration: none;
  color: var(--text-2);
  padding: 0.7rem 0.75rem;
  border-radius: 0.8rem;
  background: rgba(15,23,42,0.35);
  border: 1px solid rgba(148,163,184,0.12);
  transition: border-color var(--t-med), background var(--t-med), color var(--t-med);
}

.m-sub a:hover {
  border-color: rgba(59,130,246,0.6);
  background: rgba(59,130,246,0.12);
  color: var(--text-1);
}

.m-social {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
  padding: 0.65rem 0.25rem 0.25rem;
}

.m-social a {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1px solid rgba(148,163,184,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--text-1);
  background: rgba(2,6,23,0.25);
  transition: transform var(--t-fast), border-color var(--t-med), background var(--t-med);
}

.m-social a:hover {
  transform: translateY(-1px);
  border-color: rgba(59,130,246,0.8);
  background: rgba(59,130,246,0.12);
}

/* Breakpoints */
@media (max-width: 980px) {
  .nav-desktop { display: none; }
  .nav-toggle { display: inline-flex; }

  .nav-bar {
    padding: 0.7rem 1rem; /* etwas kompakter */
  }

  .brand-name {
    font-size: 0.95rem;
    letter-spacing: 0.10em;
  }
}

@media (max-width: 420px) {
  .brand-name { display: none; } /* nur Logo + A auf sehr klein */
}