/* Infrastructure link behavior */

/* Hide once scrolled past hero (data-header-nav="dark" sections toggle .header-dark) */
.header-dark .nav-link-hero-only,
.header-white .nav-link-hero-only,
.header-menu-active .nav-link-hero-only {
    display: none;
}

/* Hide entirely on legal/story templates (no hero) */
.wrapper-legals .nav-link-hero-only,
.wrapper-story .nav-link-hero-only {
    display: none;
}

/* Responsive spacing for the three-item nav */
@media screen and (max-width: 1200px) {
    .nav { gap: 2.4rem; }
}

@media screen and (max-width: 967px) {
    .nav { gap: 1.6rem; }
    .nav-link { font-size: max(12px, 1.5rem); }
}

@media screen and (max-width: 767px) {
    .nav { gap: 1.2rem; }
    .nav-link { font-size: max(12px, 1.3rem); }
}

/* Phones: three items can't fit cleanly alongside the logo , show Strategy Call only */
@media screen and (max-width: 650px) {
    .nav-link-hero-only { display: none; }
    .nav-link { font-size: max(12px, 1.4rem); }
}

/* ============================================================
   RESOURCES DROPDOWN (desktop nav, all templates)
   CSS-only: opens on :hover / :focus-within. The wrapper carries
   .nav-link-hero-only so it hides on scroll like its siblings.
   ============================================================ */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: transparent;
    border: 0;
    padding: 0;
    margin: 0;
    cursor: pointer;
}

.nav-dropdown-caret {
    width: 1.2rem;
    height: 1.2rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: transform var(--transition-fast);
}

.nav-dropdown:hover .nav-dropdown-caret,
.nav-dropdown:focus-within .nav-dropdown-caret {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 1.2rem);
    left: 50%;
    flex-direction: column;
    gap: 0.4rem;
    min-width: 20rem;
    padding: 1.2rem;
    background: rgba(20, 20, 20, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 1.2rem;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1.6rem 4rem rgba(0, 0, 0, 0.32);
    display: flex;
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, -0.6rem);
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    z-index: 60;
}

/* Invisible bridge so the cursor can cross the gap without closing */
.nav-dropdown-menu::before {
    content: "";
    position: absolute;
    top: -1.2rem;
    left: 0;
    right: 0;
    height: 1.2rem;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
}

.nav-dropdown-link {
    display: block;
    padding: 1rem 1.4rem;
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    border-radius: 0.6rem;
    white-space: nowrap;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-dropdown-link:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--white);
}

/* Section label inside the burger menu */
.mobile-menu-label {
    display: block;
    padding: 1rem 1.4rem 0.2rem;
    font-size: 1.1rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.45);
}

/* ============================================================
   BURGER MENU (homepage, tablet + mobile)
   Mirrors the pilot-page implementation. CSS-only: a hidden
   checkbox (.burger-toggle) and a label (.burger-button) drive
   the open/close state. No JS dependency.
   ============================================================ */
.nav { position: relative; }

.burger-toggle {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 0;
    height: 0;
}

.burger-button {
    display: none;
    position: relative;
    width: 3.6rem;
    height: 3.6rem;
    background: transparent;
    border: 0;
    padding: 0;
    margin: 0;
    cursor: pointer;
    color: inherit;
}

.burger-button span,
.burger-button::before,
.burger-button::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    width: 2.4rem;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transform: translate(-50%, -50%);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.burger-button::before { transform: translate(-50%, calc(-50% - 0.7rem)); }
.burger-button::after  { transform: translate(-50%, calc(-50% + 0.7rem)); }

.burger-toggle:checked ~ .burger-button::before {
    transform: translate(-50%, -50%) rotate(45deg);
}
.burger-toggle:checked ~ .burger-button::after {
    transform: translate(-50%, -50%) rotate(-45deg);
}
.burger-toggle:checked ~ .burger-button span {
    opacity: 0;
}

.mobile-menu {
    display: none;
    position: absolute;
    top: calc(100% + 1.2rem);
    right: 0;
    flex-direction: column;
    gap: 0.4rem;
    min-width: 20rem;
    padding: 1.2rem;
    background: rgba(20, 20, 20, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 1.2rem;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1.6rem 4rem rgba(0, 0, 0, 0.32);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-0.6rem);
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    z-index: 60;
}

.burger-toggle:checked ~ .mobile-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-menu-link {
    display: block;
    padding: 1rem 1.4rem;
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    border-radius: 0.6rem;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.mobile-menu-link:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--white);
}

@media screen and (max-width: 967px) {
    .burger-button { display: block; }
    .mobile-menu { display: flex; }
}

/* ============================================================
   PERSISTENT NAV (Services / Results / Process / About / Resources)
   Desktop links stay visible at every scroll position. Below
   967px they collapse into the burger menu.
   ============================================================ */
@media screen and (max-width: 1100px) {
    .nav { gap: 1.8rem; }
}

@media screen and (max-width: 967px) {
    .nav-link-desktop { display: none; }
}

/* The full menu is long; keep it scrollable on short screens */
.mobile-menu {
    max-height: calc(100vh - 12rem);
    overflow-y: auto;
}


/* ============================================================
   STICKY HEADER: solid blurred bar once scrolled (June 2026)
   The header is already position:fixed; this gives it a defined
   bar with a shadow after the user scrolls past the top.
   ============================================================ */
.header {
    transition: top 0.3s ease, padding 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
}
.header.header-scrolled {
    top: 0;
    padding-top: 1.2rem;
    padding-bottom: 1.2rem;
    background: rgba(255, 255, 255, 0.82);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.07);
    box-shadow: 0 0.6rem 2.4rem rgba(0, 0, 0, 0.05);
}
/* On the light scrolled bar, force readable dark nav regardless of the
   section underneath (beats the data-header-nav dark/white color toggles). */
.header.header-scrolled .logo svg path { fill: var(--black); }
.header.header-scrolled .nav-link,
.header.header-scrolled .nav-link span { color: var(--black); }
.header.header-scrolled .nav-link .arrow { fill: var(--black); }
.header.header-scrolled .nav-dropdown-caret { stroke: var(--black); }
.header.header-scrolled .burger-button { color: var(--black); }