/* ==========================================================================
   Navbar
   ========================================================================== */
.navbar {
  position: fixed;
  top: var(--sp-2);
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - var(--sp-3) * 2);
  max-width: 1120px;
  z-index: 100;
  border-radius: 999px;
  transition: top var(--dur-med) var(--ease), padding var(--dur-med) var(--ease), background var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease), max-width var(--dur-med) var(--ease);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative; 
  width: 100%;
  gap: var(--sp-3);
  padding: 14px 14px 14px 22px;
  border-radius: inherit;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(17, 17, 17, 0.07);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
  transition: padding var(--dur-med) var(--ease), background var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease);
}

.navbar.is-scrolled {
  top: 10px;
  max-width: 980px;
}

.navbar.is-scrolled .navbar__inner {
  padding: 10px 10px 10px 20px;
  background: rgba(255, 255, 255, 0.75);
  box-shadow: var(--shadow-soft);
}

.navbar__logo {
  font-family: var(--font-logo);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  text-transform: lowercase;
}

.navbar__menu {
  display: none;
  align-items: center;
  gap: var(--sp-4);
}

@media (min-width: 900px) {
  .navbar__menu {
    display: flex;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }
}

.navbar__link {
  position: relative;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 2px;
  transition: color var(--dur-fast) var(--ease);
}

.navbar__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-fast) var(--ease);
}

.navbar__link:hover {
  color: var(--text-primary);
}

.navbar__link:hover::after {
  transform: scaleX(1);
}

.navbar__link.is-active {
  color: var(--text-primary);
}

.navbar__link.is-active::after {
  transform: scaleX(1);
}

.navbar__right {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

/* Language switch */
.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  border-radius: 999px;
  background: rgba(17, 17, 17, 0.05);
  border: 1px solid rgba(17, 17, 17, 0.06);
}

.lang-switch__btn {
  padding: 6px 11px;
  font-size: 12.5px;
  font-weight: 600;
  border-radius: 999px;
  color: var(--text-muted);
  transition: color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}

.lang-switch__btn[aria-pressed="true"] {
  color: var(--text-primary);
  background: #ffffff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.navbar .btn-primary {
  padding: 11px 20px;
  font-size: 13.5px;
}

/* Mobile menu toggle */
.navbar__burger {
  display: inline-flex;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(17, 17, 17, 0.05);
}

@media (min-width: 900px) {
  .navbar__burger {
    display: none;
  }
}

.navbar__burger span {
  position: relative;
  width: 16px;
  height: 1.5px;
  background: var(--text-primary);
}

.navbar__burger span::before,
.navbar__burger span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 1.5px;
  background: var(--text-primary);
  transition: transform var(--dur-fast) var(--ease);
}

.navbar__burger span::before {
  top: -5px;
}

.navbar__burger span::after {
  top: 5px;
}

.navbar.is-menu-open .navbar__burger span {
  background: transparent;
}

.navbar.is-menu-open .navbar__burger span::before {
  top: 0;
  transform: rotate(45deg);
  background: var(--text-primary);
}

.navbar.is-menu-open .navbar__burger span::after {
  top: 0;
  transform: rotate(-45deg);
  background: var(--text-primary);
}

/* Mobile dropdown panel */
.navbar__mobile-panel {
  display: none;
  flex-direction: column;
  gap: 2px;
  margin-top: 8px;
  padding: 10px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(18px);
  border: 1px solid rgba(17, 17, 17, 0.07);
  box-shadow: var(--shadow-soft);
}

.navbar.is-menu-open .navbar__mobile-panel {
  display: flex;
  animation: navFadeIn var(--dur-fast) var(--ease);
}

@keyframes navFadeIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.navbar__mobile-panel a {
  padding: 12px 14px;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
}

.navbar__mobile-panel a:hover {
  background: rgba(17, 17, 17, 0.04);
}

@media (min-width: 900px) {
  .navbar__mobile-panel {
    display: none !important;
  }
}