/* ============================================
   INSPIRE AGENCY — Navigation
   nav.css
   ============================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background-color: var(--nav-bg-light);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  transition: border-color var(--duration-fast) ease, background-color var(--duration-base) ease;
}

[data-theme="dark"] .nav {
  background-color: var(--nav-bg-dark);
}

.nav--scrolled {
  border-bottom: var(--border-thin);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  gap: var(--space-md);
}

/* --- LOGO --- */
.nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  z-index: 1001;
}

.nav__logo img {
  height: 28px;
  width: auto;
  transition: opacity var(--duration-fast) ease;
}

.nav__logo img:hover {
  opacity: 0.7;
}

/* --- LINKS --- */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav__link {
  font-size: var(--font-size-sm);
  font-weight: 400;
  color: var(--color-text-primary);
  letter-spacing: 0;
  transition: color var(--duration-fast) ease, opacity var(--duration-fast) ease;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 1px;
  background-color: var(--color-text-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-fast) var(--ease-out);
}

.nav__link:hover::after,
.nav__link.active::after {
  transform: scaleX(1);
}

.nav__link:hover {
  opacity: 0.7;
}

/* --- ACTIONS (right side) --- */
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

/* --- LANGUAGE SWITCHER --- */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
}

.lang-btn {
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
  transition: color var(--duration-fast) ease;
  background: none;
  border: none;
}

.lang-btn.active,
.lang-btn:hover {
  color: var(--color-text-primary);
}

.lang-separator {
  font-size: var(--font-size-xs);
  color: var(--color-border);
}

/* --- THEME TOGGLE --- */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  color: var(--color-text-primary);
  transition: background-color var(--duration-fast) ease;
  cursor: pointer;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background-color: var(--color-bg-secondary);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

.theme-toggle .icon-moon {
  display: block;
}

.theme-toggle .icon-sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

/* --- HAMBURGER --- */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 34px;
  height: 34px;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background-color: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--duration-base) var(--ease-out), opacity var(--duration-fast) ease;
  transform-origin: center;
}

.nav__hamburger.is-open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav__hamburger.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__hamburger.is-open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* --- MOBILE OVERLAY --- */
.nav__overlay {
  position: fixed;
  inset: 0;
  background-color: var(--color-bg);
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-sm);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-100%);
  transition: opacity var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);
}

.nav__overlay.is-open {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.nav__overlay .nav__link {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav__overlay .nav__link::after {
  bottom: -4px;
  height: 2px;
}

.nav__overlay .lang-switcher {
  margin-top: var(--space-md);
}

.nav__overlay .lang-btn {
  font-size: var(--font-size-sm);
  padding: 8px 12px;
}

.nav__overlay .btn--nav {
  margin-top: var(--space-sm);
  font-size: var(--font-size-base);
  padding: 14px 32px;
}

/* --- RESPONSIVE --- */
@media (max-width: 900px) {
  .nav__links {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .nav__actions .btn--nav {
    display: none;
  }
}

@media (max-width: 480px) {
  .nav__overlay .nav__link {
    font-size: var(--font-size-lg);
  }
}