/* Shared UI: navigation, reveals, inner-page nav states */
/* ─── Navbar ─────────────────────────────────────────────── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 0 2.5rem;
    height: 64px;
    display: flex;
    align-items: center;
    background: transparent;
    transition: background 0.4s ease;
}

/* Light mode glass — NO border */
.navbar.scrolled {
    background: rgba(254, 254, 254, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.navbar.menu-open {
    background: rgba(254, 254, 254, 0.92);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.nav-inner {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* PrivateBox wordmark */
.nav-logo {
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0;
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1;
    position: relative;
    padding: 2px 6px;
}

.nav-logo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 8px;
    height: 8px;
    border-top: 2px solid #000;
    border-left: 2px solid #000;
}

.nav-logo::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 8px;
    height: 8px;
    border-bottom: 2px solid #000;
    border-right: 2px solid #000;
}

.logo-private {
    color: var(--blue);
    font-weight: 800;
}

.logo-box {
    color: #000;
    font-weight: 800;
    margin-left: 0.3em;
}

.logo-dot {
    display: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: clamp(0.8rem, 1.6vw, 1.5rem);
    flex-wrap: nowrap;
}

.nav-links a {
    color: var(--gray-mid);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s, opacity 0.2s;
    white-space: nowrap;
}

.nav-links > a:not(.nav-cta) {
    position: relative;
    padding: 0.35rem 0;
}

.nav-links > a:not(.nav-cta) + a:not(.nav-cta) {
    padding-left: clamp(1rem, 1.8vw, 1.4rem);
}

.nav-links > a:not(.nav-cta) + a:not(.nav-cta)::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 1px;
    height: 1.05rem;
    background: rgba(17, 17, 17, 0.12);
    transform: translateY(-50%);
}

.nav-links a:hover {
    color: var(--text-dark);
}

.nav-links .nav-cta {
    background: var(--blue);
    color: #fff;
    padding: 0.45rem 1.1rem;
    border-radius: 8px;
    margin-left: clamp(0.6rem, 1.2vw, 1rem);
    font-weight: 500;
    font-size: 0.875rem;
    transition: background 0.2s, transform 0.15s;
}

.nav-links .nav-cta:hover {
    background: var(--blue-light);
    color: #fff;
    transform: translateY(-1px);
}

/* Mobile Menu Toggle (Hamburger) */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.menu-toggle .bar {
    width: 100%;
    height: 2.5px;
    background: #000;
    transition: all 0.3s ease;
    border-radius: 999px;
}

.menu-toggle.active .top {
    transform: translateY(9px) rotate(45deg);
}

.menu-toggle.active .mid {
    opacity: 0;
}

.menu-toggle.active .bot {
    transform: translateY(-9px) rotate(-45deg);
}

/* Mobile Menu Sidebar/Overlay */
.mobile-menu {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100vh;
    background:
        radial-gradient(circle at top right, rgba(37, 99, 235, 0.06), transparent 28%),
        rgba(254, 254, 254, 0.98);
    z-index: 1000;
    padding: 6.5rem 1.25rem 2rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 0.25rem;
    box-shadow: none;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity 0.3s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.3s ease;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
}

.mobile-menu::before {
    content: 'Navigation';
    width: min(100%, 420px);
    margin: 0 auto 1rem;
    color: rgba(17, 17, 17, 0.45);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.mobile-menu a {
    width: min(100%, 420px);
    margin: 0 auto;
    font-size: clamp(1.15rem, 3vw, 1.3rem);
    font-weight: 600;
    color: #111;
    text-decoration: none;
    letter-spacing: -0.02em;
    padding: 0.95rem 0.2rem;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
}

.mobile-menu a:not(.nav-cta) {
    border-bottom: 1px solid rgba(17, 17, 17, 0.06);
}

.mobile-menu .nav-cta {
    margin-top: 0.5rem;
    background: linear-gradient(135deg, var(--blue) 0%, #1d4ed8 100%);
    color: #fff;
    padding: 1.05rem 1.2rem;
    border-radius: 16px;
    text-align: center;
    font-size: 1.05rem;
    border: none;
    box-shadow: 0 16px 34px rgba(37, 99, 235, 0.18);
}

.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.delay-1 {
    transition-delay: 0.2s;
}

.delay-2 {
    transition-delay: 0.35s;
}

.delay-3 {
    transition-delay: 0.5s;
}

.delay-4 {
    transition-delay: 0.65s;
}

.nav-links a[aria-current="page"],
.mobile-menu a[aria-current="page"] {
    color: var(--text-dark);
}

.fade-up.in-view,
.fade-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Inner marketing pages (about, product, security) */
.detail-page .navbar {
    background: rgba(254, 254, 254, 0.86);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.page-main {
    padding-top: calc(var(--nav-height) + 2rem);
}

@media (max-width: 640px) {
    .page-main {
        padding-top: calc(var(--nav-height) + 1rem);
    }
}