/* ==========================================================================
   QRTasse – Header & Navigation (CI-bündig & konsistent mit Base)
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: saturate(140%) blur(10px);
  background: rgba(var(--warm-rgb), .9);
  border-bottom: 1px solid rgba(0, 0, 0, .06);
  transition: background .3s var(--ease), transform .3s var(--ease), box-shadow .25s var(--ease);
}

.site-header.is-scrolled {
  background: rgba(var(--warm-rgb), .95);
  box-shadow: var(--shadow-soft);
}

/* ---------- Grid Wrapper ---------- */
.site-header .nav {
  height: 76px;
  display: grid;
  grid-template-columns: auto 1fr auto auto auto; /* Brand | Menu | Social | CTA | Burger */
  align-items: center;
  gap: var(--space-4); /* War 20px, nah an 1.5rem=24px */
  padding-inline-end: 0; /* Neu: Padding rechts auf 0 setzen, um flush zu sein (volle Breite für rechten Rand) */
}

/* ---------- Brand ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2); /* War 10px, nah an 0.75rem=12px */
}
.brand-logo {
  display: block;
  height: clamp(24px, 6vw, 36px);
  width: auto;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Navigation ---------- */
.main-nav .menu {
  display: flex;
  align-items: center;
  gap: var(--space-3); /* War 18px, nah an 1rem=16px */
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-nav a {
  padding: var(--space-2) var(--space-3); /* War 8px 10px, nah an 0.75rem 1rem */
  border-radius: var(--r-s);
  transition: background .2s var(--ease);
}
.main-nav a:hover {
  background: rgba(0, 0, 0, .05);
}

/* ---------- Socials ---------- */
.header-social {
  display: flex;
  align-items: center;
  gap: var(--space-2); /* War 14px, nah an 0.75rem=12px */
}

/* ---------- CTA ---------- */
.site-header .btn.cta {
  margin-left: var(--space-1); /* War 4px, nah an 0.5rem=8px */
}

/* ---------- Hamburger ---------- */
.hamburger {
  display: none;
  appearance: none;
  cursor: pointer;
  border: 1px solid rgba(0, 0, 0, .12);
  background: transparent;
  border-radius: var(--r-s);
  padding: var(--space-2) var(--space-3); /* War 8px 12px, nah */
  font-size: 20px;
  line-height: 1;
  color: var(--ink);
  transition: background .2s var(--ease), border-color .2s var(--ease);
}
.hamburger:hover {
  background: rgba(0,0,0,.04);
  border-color: rgba(0,0,0,.18);
}

/* ---------- Dropdown Navigation (Mobile) ---------- */
.main-nav {
  position: static;
}

/* ==========================================================================
   Mobile
   ========================================================================== */
@media (max-width: 980px) { /* Angepasst an base.css Breakpoint */
  .site-header .nav {
    grid-template-columns: auto 1fr auto; /* Logo | Spacer | Burger */
    gap: var(--space-2); /* War 14px, nah an 0.75rem=12px */
    padding-inline-end: 0; /* Neu: Rechts flush für Hamburger (volle Breite für rechten Rand) */
  }

  .main-nav {
    position: absolute;
    right: 0; /* Anpassen: Dropdown flush rechts, ohne Padding (volle Breite) */
    top: calc(100% + var(--space-2)); /* War +8px */
    background: var(--white);
    border: 1px solid rgba(0, 0, 0, .08);
    border-radius: var(--r-m); /* War 16px, nah an 14px */
    padding: var(--space-3); /* War 10px, nah an 1rem=16px */
    display: none;
    box-shadow: var(--shadow-soft);
    z-index: 9999;
  }

  .main-nav.is-open { display: block; }

  .main-nav .menu {
    flex-direction: column;
    gap: .4rem;
    align-items: flex-start;
  }

  /* Socials & CTA ausblenden */
  .header-social { display: none; }
  .site-header .btn.cta { display: none; }

  /* Burger bündig rechts */
  .hamburger {
    display: inline-block;
    justify-self: end;
  }
}

/* ==========================================================================
   Small Screens (unter 640px) – angepasst an base.css
   ========================================================================== */
@media (max-width: 640px) {
  .site-header .nav {
    height: 70px;
  }

  .brand-logo {
    height: 28px;
  }

  .hamburger {
    padding: var(--space-1) var(--space-2); /* War 6px 10px, nah an 0.5rem 0.75rem */
    font-size: 18px;
  }
}