:root {
    /* Match real header height: .navbar-modern padding + .navbar padding-y + brand/img + border */
    --navbar-height: 93px;
    --nav-transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --vf-nav-accent: #eeb30d;
    --vf-nav-accent-hover: #d9a00a;
    --vf-nav-text: #545454;
    --vf-bg-glass: rgba(255, 255, 255, 0.85);
    --vf-border: rgba(0, 0, 0, 0.08);
}

@media (prefers-color-scheme: dark) {
 :root {
      --vf-nav-text: #e2e8f0;
        --vf-bg-glass: rgba(15, 15, 26, 0.8);
        --vf-border: rgba(255, 255, 255, 0.06);
    }
}

.navbar-modern {
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    background-color: var(--vf-bg-glass) !important;
    border-bottom: 1px solid var(--vf-border);
    transition: var(--nav-transition);
    z-index: 1030;
    padding: 0.25rem 0;
}

.navbar-modern.scrolled {
    padding: 0.1rem 0;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
    background-color: rgba(255, 255, 255, 0.95) !important;
}

@media (prefers-color-scheme: dark) {
.navbar-modern.scrolled {
        box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.4);
  background-color: rgba(15, 15, 26, 0.95) !important;
    }
}

.brand-text {
    font-size: 1.4rem;
    font-weight: 800 !important;
    letter-spacing: -0.025em;
    background: linear-gradient(to right, var(--vf-nav-text), var(--vf-nav-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
 background-clip: text;
}

.logo-animation {
    transition: transform 0.3s ease;
}

.navbar-brand:hover .logo-animation {
    transform: scale(1.08);
}

.nav-link-custom {
    position: relative;
    font-weight: 600;
    color: var(--vf-nav-text) !important;
    padding: 0.5rem 1.25rem !important;
    transition: var(--nav-transition);
    opacity: 0.8;
}

.nav-link-custom:hover {
  opacity: 1;
    color: var(--vf-nav-accent) !important;
}

/* Modern flowing underline animation */
.nav-link-custom::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 1.25rem;
    right: 1.25rem;
    height: 2px;
    background: linear-gradient(to right, var(--vf-nav-accent), var(--vf-nav-accent-hover));
    transform: scaleX(0);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    transform-origin: right;
    border-radius: 2px;
}

.nav-link-custom:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Staggered entry animation for links */
@keyframes navItemFade {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.nav-item {
    animation: navItemFade 0.5s ease forwards;
}

.nav-item:nth-child(1) { animation-delay: 0.1s; }
.nav-item:nth-child(2) { animation-delay: 0.2s; }
.nav-item:nth-child(3) { animation-delay: 0.3s; }
.nav-item:nth-child(4) { animation-delay: 0.4s; }

.custom-toggler {
    border: none;
 padding: 0.5rem;
}

.custom-toggler:focus {
    box-shadow: none;
}

@media (max-width: 991.98px) {
    .navbar-collapse {
        background: white;
        margin-top: 1rem;
        padding: 1rem;
        border-radius: 1rem;
        box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.12), 0 4px 10px rgba(0, 0, 0, 0.06);
        border: 1px solid rgba(0, 0, 0, 0.1);
    }

    .nav-link-custom {
        padding: 0.75rem 1rem !important;
        border-radius: 0.5rem;
  }

    .nav-link-custom:hover {
        background-color: rgba(238, 179, 13, 0.08);
    }

    .nav-link-custom::after {
        display: none;
  }
}

@media (max-width: 991.98px) and (prefers-color-scheme: dark) {
    .navbar-collapse {
 background: #1a1a2e;
        box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
    }

    .nav-link-custom:hover {
        background-color: rgba(238, 179, 13, 0.1);
  }
}

/* Toggler icon for dark mode */
@media (prefers-color-scheme: dark) {
    .custom-toggler .navbar-toggler-icon {
        filter: invert(1);
    }
}