/**
 * Scroll header: #mainNav fixed over all page content; #navContainer gets glass on .scrolled.
 */

#landingHeaderMount,
#toolSharedHeaderMount {
    position: relative;
    z-index: var(--z-scroll-header, 9000);
    pointer-events: none;
}

#landingHeaderMount {
    min-height: calc(4.25rem + max(1rem, env(safe-area-inset-top, 0px)));
}

#toolSharedHeaderMount {
    min-height: calc(7.75rem + max(1rem, env(safe-area-inset-top, 0px)));
}

#mainNav.navorina-scroll-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-scroll-header, 9000);
    display: flex;
    justify-content: center;
    margin: 0;
    padding-left: 1rem;
    padding-right: 1rem;
    padding-top: max(1rem, env(safe-area-inset-top, 0px));
    box-sizing: border-box;
    pointer-events: none;
    isolation: isolate;
}

#mainNav.navorina-scroll-header > #navContainer {
    pointer-events: auto;
    position: relative;
    z-index: 1;
}

#navContainer .navorina-logo {
    padding-left: 24px;
}

#navContainer {
    transition:
        background 0.3s ease-in-out,
        border-color 0.3s ease-in-out,
        box-shadow 0.3s ease-in-out,
        backdrop-filter 0.3s ease-in-out,
        -webkit-backdrop-filter 0.3s ease-in-out;
    background: transparent !important;
    border: 1px solid transparent;
    box-shadow: none;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
}

#navContainer.scrolled,
html.dark #navContainer.scrolled,
html.dark-theme #navContainer.scrolled,
body.dark-theme #navContainer.scrolled {
    background: color-mix(in srgb, #020203 82%, transparent) !important;
    border-color: rgba(238, 238, 238, 0.12) !important;
    -webkit-backdrop-filter: blur(14px) saturate(1.05);
    backdrop-filter: blur(14px) saturate(1.05);
    box-shadow:
        inset 0 1px 0 rgba(238, 238, 238, 0.07),
        0 12px 38px rgba(0, 0, 0, 0.3);
}

/* Tool pages: light glass even before scroll */
body.tool-main-has-video #mainNav #navContainer:not(.scrolled) {
    background: color-mix(in srgb, #020203 76%, transparent) !important;
    border: 1px solid rgba(238, 238, 238, 0.1);
    box-shadow:
        inset 0 1px 0 rgba(238, 238, 238, 0.06),
        0 10px 32px rgba(0, 0, 0, 0.26);
    -webkit-backdrop-filter: blur(14px) saturate(1.05);
    backdrop-filter: blur(14px) saturate(1.05);
}

#mainNav #appsMenuPanel {
    isolation: isolate;
    overflow: hidden;
    z-index: 2;
}

/* Calculators: inline nav without mount — padding for fixed header */
body.calculator-page .tool-page-breadcrumb-bar {
    padding-top: calc(4.25rem + max(1rem, env(safe-area-inset-top, 0px)) + 0.35rem);
}

body.calculator-page #toolSharedHeaderMount + main .tool-page-breadcrumb-bar {
    padding-top: 0.75rem;
}

/* Static pages (contact, docs, legal) without mount wrapper */
#mainNav.navorina-scroll-header ~ main {
    padding-top: calc(4.25rem + max(1rem, env(safe-area-inset-top, 0px)) + 1.25rem);
}