/* ── NAV – shared across all pages ── */
:root { --nav-h: 72px; }

/* ── BASE – tmavé téma (dark hero stránky) ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: var(--green-dark);
  box-shadow: 0 2px 20px rgba(0,0,0,0.15);
  transition: background 0.35s ease, box-shadow 0.35s ease;
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.nav__logo img { height: 36px; width: auto; }

/* ── LINKS (dark base) ── */
.nav__links { display: none; align-items: center; gap: 36px; }
@media (min-width: 768px) { .nav__links { display: flex; } }
.nav__links a {
  font-size: 0.875rem;
  color: rgba(244,240,230,0.85);
  transition: color 0.2s ease;
}
.nav__links a:hover { color: var(--cream); }
.nav__links a.active { font-weight: 500; color: var(--cream); }

/* ── CTA (dark base) ── */
.nav__cta { display: none; }
@media (min-width: 768px) {
  .nav__cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    min-height: 40px;
    background: var(--cream);
    color: var(--green-dark);
    border: 1px solid var(--cream);
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.25s ease, color 0.25s ease;
    text-decoration: none;
  }
  .nav__cta:hover { background: transparent; color: var(--cream); }
}

/* ── BURGER (dark base) ── */
.nav__burger {
  display: flex; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 8px;
  min-width: 44px; min-height: 44px; justify-content: center; align-items: center;
}
@media (min-width: 768px) { .nav__burger { display: none; } }
.nav__burger span {
  display: block; width: 24px; height: 2px; background: var(--cream);
  transition: transform 0.3s, opacity 0.3s, background 0.35s;
}
.nav__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.open span:nth-child(2) { opacity: 0; }
.nav__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── MOBILE MENU ── */
.nav__mobile {
  display: none; position: fixed; inset: 0; background: var(--cream); z-index: 99;
  flex-direction: column; align-items: center; justify-content: center; gap: 6px;
}
.nav__mobile.open { display: flex; }
.nav__mobile-link {
  font-family: var(--font-serif); font-size: 1.4rem;
  color: var(--green-dark); opacity: 0.75; transition: opacity 0.2s;
}
.nav__mobile-link:hover, .nav__mobile-link.active { opacity: 1; }

/* Mobile CTA button */
.nav__mobile-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  padding: 12px 28px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  background: var(--green-dark);
  color: var(--cream);
  border: 1px solid var(--green-dark);
  text-decoration: none;
  transition: background 0.25s ease, color 0.25s ease;
}
.nav__mobile-cta:hover { background: var(--green-mid); border-color: var(--green-mid); }

/* ── DROPDOWN (dark base) ── */
.nav__dropdown { position: relative; }
.nav__dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  height: 14px;
}
.nav__dropdown-toggle { display: inline-flex !important; align-items: center; gap: 4px; }
.nav__dropdown-toggle svg { transition: transform 0.2s ease; flex-shrink: 0; opacity: 0.5; }
.nav__dropdown:hover .nav__dropdown-toggle svg { transform: rotate(180deg); opacity: 1; }
.nav__dropdown-menu {
  position: absolute;
  top: calc(100% + 14px);
  left: -20px;
  min-width: 220px;
  background: var(--green-dark);
  display: none;
  flex-direction: column;
  box-shadow: 0 8px 32px rgba(0,0,0,0.25);
  z-index: 10;
  border-top: 1px solid rgba(244,240,230,0.08);
}
.nav__dropdown:hover .nav__dropdown-menu { display: flex; }
.nav__dropdown-menu a {
  padding: 11px 20px;
  font-size: 0.82rem;
  color: rgba(244,240,230,0.6) !important;
  opacity: 1 !important;
  transition: background 0.15s, color 0.15s !important;
  letter-spacing: 0.02em;
}
.nav__dropdown-menu a:hover { background: rgba(255,255,255,0.06); color: var(--cream) !important; }
.nav__dropdown-menu a.active { color: var(--cream) !important; font-weight: 500; }

/* ── LANGUAGE SWITCHER ── */
.nav__lang {
  display: none;
  align-items: center;
  gap: 5px;
}
@media (min-width: 768px) { .nav__lang { display: flex; } }

.nav__lang-item {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: rgba(244,240,230,0.65);
  text-decoration: none;
  transition: color 0.2s;
}
.nav__lang-item:hover { color: rgba(244,240,230,0.85); }
.nav__lang-item.active {
  color: var(--cream);
  pointer-events: none;
}
.nav__lang-sep {
  font-size: 0.6rem;
  color: rgba(244,240,230,0.2);
  user-select: none;
}

.nav--light .nav__lang-item { color: rgba(26,46,28,0.70); }
.nav--light .nav__lang-item:hover { color: var(--green-dark); }
.nav--light .nav__lang-item.active { color: var(--green-dark); }
.nav--light .nav__lang-sep { color: rgba(26,46,28,0.2); }

/* Mobile lang switcher */
.nav__mobile-lang {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav__mobile-lang .nav__lang-item {
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  color: rgba(26,46,28,0.55);
}
.nav__mobile-lang .nav__lang-item:hover,
.nav__mobile-lang .nav__lang-item.active { color: var(--green-dark); }
.nav__mobile-lang .nav__lang-sep { color: rgba(26,46,28,0.2); }

/* ── MOBILE SUB ── */
.nav__mobile-sub { display: flex; flex-direction: column; align-items: center; gap: 8px; margin-top: -8px; }
.nav__mobile-sublink {
  font-family: var(--font-sans) !important;
  font-size: 1.1rem !important;
  color: rgba(26,46,28,0.55) !important;
  opacity: 1 !important;
  transition: color 0.2s !important;
}
.nav__mobile-sublink:hover,
.nav__mobile-sublink.active { color: var(--green-dark) !important; }

/* ═══════════════════════════════════════
   LIGHT THEME — průhledný nav, tmavé linky
   Použití: data-nav-theme="light" (podstránky se světlým hero)
═══════════════════════════════════════ */
.nav--light {
  background: transparent;
  box-shadow: none;
}
.nav--light.scrolled {
  background: var(--cream);
  box-shadow: 0 1px 0 rgba(26,46,28,0.1);
}

/* Linky */
.nav--light .nav__links a {
  color: rgba(26,46,28,0.65);
}
.nav--light .nav__links a:hover,
.nav--light .nav__links a.active {
  color: var(--green-dark);
}

/* CTA */
@media (min-width: 768px) {
  .nav--light .nav__cta {
    background: var(--green-dark);
    color: var(--cream);
    border-color: var(--green-dark);
  }
  .nav--light .nav__cta:hover {
    background: var(--green-mid);
    border-color: var(--green-mid);
    color: var(--cream);
  }
}

/* Burger */
.nav--light .nav__burger span { background: var(--green-dark); }
.nav--light .nav__burger.open span { background: var(--green-dark); }

/* Dropdown — světlé pozadí */
.nav--light .nav__dropdown-menu {
  background: var(--cream);
  border-top: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}
.nav--light .nav__dropdown-menu a {
  color: rgba(26,46,28,0.75) !important;
}
.nav--light .nav__dropdown-menu a:hover {
  background: var(--cream-dark);
  color: var(--green-dark) !important;
}
.nav--light .nav__dropdown-menu a.active {
  color: var(--green-dark) !important;
}

/* ── FOCUS STYLES (keyboard navigation) ── */
.nav a:focus-visible,
.nav button:focus-visible,
.nav__mobile a:focus-visible {
  outline: 2px solid var(--cream);
  outline-offset: 3px;
  border-radius: 2px;
}
.nav--light a:focus-visible,
.nav--light button:focus-visible {
  outline-color: var(--green-dark);
}