:root {
  --nav-height: 80px;
  --nav-horizontal-padding: 30px;
  --nav-item-gap: 30px;
  --nav-link-font-size: 15px;
  --nav-link-letter-spacing: 0.02em;
  --nav-link-weight: 600;
  --nav-logo-height: 58px;
  --nav-logo-height-mobile: 52px;
  --nav-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --nav-shadow-scrolled: 0 12px 32px rgba(15, 23, 42, 0.12);
}

.navbar {
  --nav-bg: rgba(255, 255, 255, 0.96);
  --nav-bg-solid: rgba(255, 255, 255, 0.99);
  --nav-border: rgba(15, 23, 42, 0.08);
  --nav-link-color: #344054;
  --nav-link-hover: #0066ff;
  --nav-link-muted: #667085;
  --nav-toggle-color: #1f2937;
  --nav-panel-bg: rgba(255, 255, 255, 0.99);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--nav-border);
  box-shadow: none;
  transition:
    background 0.3s ease,
    box-shadow 0.3s ease,
    border-color 0.3s ease;
}

.navbar.navbar-light,
.navbar.navbar-white {
  --nav-bg: rgba(255, 255, 255, 0.96);
  --nav-bg-solid: rgba(255, 255, 255, 0.99);
  --nav-border: rgba(15, 23, 42, 0.08);
  --nav-link-color: #344054;
  --nav-link-hover: #0066ff;
  --nav-link-muted: #667085;
  --nav-toggle-color: #1f2937;
  --nav-panel-bg: rgba(255, 255, 255, 0.99);
}

.navbar.navbar-dark {
  --nav-bg: rgba(10, 10, 15, 0.92);
  --nav-bg-solid: rgba(10, 10, 15, 0.98);
  --nav-border: rgba(255, 255, 255, 0.08);
  --nav-link-color: rgba(255, 255, 255, 0.78);
  --nav-link-hover: #00d4ff;
  --nav-link-muted: rgba(255, 255, 255, 0.62);
  --nav-toggle-color: rgba(255, 255, 255, 0.92);
  --nav-panel-bg: rgba(10, 10, 15, 0.98);
}

.navbar.scrolled {
  background: var(--nav-bg-solid);
  box-shadow: var(--nav-shadow-scrolled);
}

.navbar .nav-container {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: var(--nav-height);
  padding: 10px var(--nav-horizontal-padding);
}

.nav-brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-brand-link {
  display: inline-flex;
  align-items: center;
}

.navbar .logo {
  display: block;
  width: auto;
  height: var(--nav-logo-height);
  max-width: none;
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--nav-item-gap);
  margin-left: auto;
  list-style: none;
}

.nav-menu li {
  flex: 0 0 auto;
}

.nav-menu a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 0 2px;
  font-size: var(--nav-link-font-size);
  font-weight: var(--nav-link-weight);
  letter-spacing: var(--nav-link-letter-spacing);
  line-height: 1;
  color: var(--nav-link-color);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.25s ease;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s ease;
}

.nav-menu a:hover,
.nav-menu a.active,
.nav-menu a[aria-current="page"] {
  color: var(--nav-link-hover);
}

.nav-menu a:hover::after,
.nav-menu a.active::after,
.nav-menu a[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0;
  background: transparent;
  border: 0;
  color: var(--nav-toggle-color);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition:
    transform 0.25s ease,
    opacity 0.25s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 1240px) {
  .navbar .nav-container {
    gap: 20px;
  }

  .nav-menu {
    gap: 22px;
  }
}

@media (max-width: 980px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-menu {
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-left: 0;
    padding: 14px 24px 20px;
    background: var(--nav-panel-bg);
    border-bottom: 1px solid var(--nav-border);
    box-shadow: var(--nav-shadow);
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu a {
    width: 100%;
    min-height: auto;
    padding: 14px 0;
    font-size: 16px;
    line-height: 1.4;
  }

  .nav-menu li + li {
    border-top: 1px solid var(--nav-border);
  }

  .nav-menu a::after {
    display: none;
  }
}

@media (max-width: 768px) {
  .navbar .nav-container {
    min-height: 76px;
    padding: 10px 20px;
  }

  .navbar .logo {
    height: var(--nav-logo-height-mobile);
  }

  .nav-menu {
    padding-left: 20px;
    padding-right: 20px;
  }
}