.site-header {
  position: sticky;
  top: 0;
  z-index: 100;

  /* technická šedá */
  background: rgba(210, 214, 220, 0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #b8bdc4;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;

  height: 96px;            /* ?? vyšší header = větší logo */
  padding: 0 1.5rem;
}

/* =========================
   LOGO – BEZ RÁMEČKU
   ========================= */
.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo img {
  height: 45px;            /* ?? TADY je skutečné zvětšení */
  width: auto;
  display: block;
}

/* =========================
   NAVIGACE
   ========================= */
.main-nav {
  display: flex;
  gap: 2rem;
}

.nav-link {
  position: relative;
  padding: 0.6rem 1rem;
  text-decoration: none;
  color: #1f2933;
  font-weight: 500;
  line-height: 1.3;

  /* 4 zelené rohy (L segmenty) */
  background:
    linear-gradient(var(--accent), var(--accent)) top left,
    linear-gradient(var(--accent), var(--accent)) top left,
    linear-gradient(var(--accent), var(--accent)) top right,
    linear-gradient(var(--accent), var(--accent)) top right,
    linear-gradient(var(--accent), var(--accent)) bottom left,
    linear-gradient(var(--accent), var(--accent)) bottom left,
    linear-gradient(var(--accent), var(--accent)) bottom right,
    linear-gradient(var(--accent), var(--accent)) bottom right;

  background-size:
    0 0, 0 0,
    0 0, 0 0,
    0 0, 0 0,
    0 0, 0 0;

  background-repeat: no-repeat;
  transition: background-size 0.2s ease, color 0.2s ease;
}

/* hover + active */
.nav-link:hover,
.nav-link.active {
  color: #111827;
  background-size:
    16px 3px, 3px 16px,
    16px 3px, 3px 16px,
    16px 3px, 3px 16px,
    16px 3px, 3px 16px;
}

/* =========================
   HAMBURGER
   ========================= */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
}

.nav-toggle span {
  width: 26px;
  height: 2px;
  background: #1f2933;
}

/* =========================
   MOBIL
   ========================= */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: 96px;
    left: 0;
    width: 100%;
    background: #e6e9ed;
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid #c3c8cf;
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .logo img {
    height: 56px;
  }
}