/* ===== НАВИГАЦИЯ ===== */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  padding: 14px var(--pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(13, 11, 9, 0.42);
  backdrop-filter: blur(40px) saturate(1.8);
  -webkit-backdrop-filter: blur(40px) saturate(1.8);
  border-bottom: 0.5px solid rgba(201, 162, 84, 0.18);
  transition: padding 0.4s var(--ease-gold);
  /* Безопасная зона iOS */
  padding-top: max(14px, env(safe-area-inset-top));
}

/* Лого */
.nav-logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  text-decoration: none;
}

.nav-logo-arabic {
  font-family: var(--font-arabic);
  font-size: 30px;
  color: var(--maroon);
  line-height: 1;
  display: block;
}

.nav-logo-latin {
  font-family: 'HighBillionSans', sans-serif;
  font-size: 40px;
  font-weight: 400;
  font-style: normal;
  color: var(--on-dark);
  display: block;
}

/* Центральные ссылки */
.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(24px, 3vw, 48px);
}

.nav-link {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--on-dark);
  opacity: 0.75;
  position: relative;
  padding: 14px 2px;
  transition: opacity 0.3s;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 10px;
  left: 0;
  width: 0;
  height: 0.5px;
  background: var(--on-dark);
  transition: width 0.3s var(--ease-gold);
}

.nav-link:hover {
  opacity: 1;
}

.nav-link:hover::after {
  width: 100%;
}

/* Правая часть */
.nav-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* Переключатель языка */
.lang-toggle {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--on-dark);
  opacity: 0.65;
  cursor: pointer;
  transition: opacity 0.3s;
  padding: 8px 4px; /* тап-цель */
  background: none;
  border: none;
}

.lang-toggle:hover {
  opacity: 1;
}

.lang-toggle .lang-current {
  opacity: 1;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* CTA кнопка "Записаться" */
.nav-cta {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: #000000;
  background: var(--on-dark);
  padding: 12px 22px;
  transition: background 0.3s var(--ease-gold);
  white-space: nowrap;
}

.nav-cta:hover {
  background: var(--maroon-light);
  color: var(--ink);
}

.nav-cta:active {
  transform: scale(0.97);
}

/* WA иконка */
.nav-wa {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  opacity: 0.7;
  transition: opacity 0.3s;
}

.nav-wa:hover { opacity: 1; }
.nav-wa svg { width: 18px; height: 18px; fill: var(--maroon); }

/* Гамбургер (мобиль) */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
  background: none;
  border: none;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

.nav-burger-line {
  width: 24px;
  height: 2px;
  background: var(--maroon);
  transition: transform 0.35s var(--ease-gold), opacity 0.35s;
  transform-origin: center;
  border-radius: 1px;
}

/* Гамбургер активен */
.nav-burger.is-open .nav-burger-line:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}
.nav-burger.is-open .nav-burger-line:nth-child(2) {
  opacity: 0;
}
.nav-burger.is-open .nav-burger-line:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
}

/* Мобильный оверлей-меню */
#nav-overlay {
  position: fixed;
  inset: 0;
  background: var(--ink);
  z-index: 850;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 40px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease-gold);
  padding: var(--pad-x);
  padding-top: 100px;
}

#nav-overlay.is-open {
  opacity: 1;
  pointer-events: all;
}

.nav-overlay-link {
  font-family: var(--font-display);
  font-size: clamp(28px, 6vw, 40px);
  font-weight: 300;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--maroon);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s, transform 0.3s;
}

#nav-overlay.is-open .nav-overlay-link {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger для overlay-ссылок */
#nav-overlay.is-open .nav-overlay-link:nth-child(1) { transition-delay: 0.1s; }
#nav-overlay.is-open .nav-overlay-link:nth-child(2) { transition-delay: 0.15s; }
#nav-overlay.is-open .nav-overlay-link:nth-child(3) { transition-delay: 0.2s; }
#nav-overlay.is-open .nav-overlay-link:nth-child(4) { transition-delay: 0.25s; }
#nav-overlay.is-open .nav-overlay-link:nth-child(5) { transition-delay: 0.3s; }

/* CTA в мобильном меню */
.nav-overlay-cta {
  font-size: clamp(18px, 4vw, 24px);
  color: var(--maroon);
  border: 0.5px solid var(--maroon-line-solid);
  padding: 12px 32px;
  margin-top: 16px;
  letter-spacing: 0.15em;
}

/* Nav scrolled — чуть компактнее */
#nav.is-scrolled {
  padding-top: max(10px, env(safe-area-inset-top));
  padding-bottom: 10px;
}

/* --- Мобиль --- */
@media (max-width: 767px) {
  .nav-links { display: none; }
  .nav-right  { display: none; }
  .nav-burger { display: flex; }

  #nav {
    padding: 8px clamp(16px, 4vw, 24px);
    padding-top: max(8px, env(safe-area-inset-top));
  }

  .nav-logo-latin {
    font-size: 28px;
  }
}

/* --- 320px --- */
@media (max-width: 374px) {
  #nav {
    padding: 16px 16px;
    padding-top: max(16px, env(safe-area-inset-top));
  }
}

/* --- Планшет --- */
@media (min-width: 768px) and (max-width: 1023px) {
  #nav {
    padding: 10px var(--pad-x);
    padding-top: max(10px, env(safe-area-inset-top));
  }
  .nav-links      { gap: 16px; }
  .nav-link       { font-size: 11px; letter-spacing: 0.2em; padding: 10px 2px; }
  .nav-logo-arabic { font-size: 24px; }
  .nav-logo-latin { font-size: clamp(28px, 4vw, 36px); }
  .nav-cta        { font-size: 10px; padding: 8px 14px; letter-spacing: 0.25em; }
  .lang-toggle    { font-size: 10px; }
}