/* ═══════════════════════════════════════════════════════════
   NAV — Type A (Links)
   Used on: Homepage, About, Pricing, Process, Billing
   ═══════════════════════════════════════════════════════════ */
.nav-a {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 18px 0;
    background: rgba(7, 10, 15, 0.88);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: padding 0.3s;
}

.nav-a .nav-inner {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

/* ═══════════════════════════════════════════════════════════
   NAV — Type B (Hamburger + Overlay)
   Used on: Contact, Services, FAQ, Docs, Kernel-* pages
   ═══════════════════════════════════════════════════════════ */
.nav-b {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 20px 0;
    transition: background 0.4s, backdrop-filter 0.4s, border-color 0.4s, padding 0.4s;
}

.nav-b.scrolled {
    background: rgba(7, 10, 15, 0.82);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
}

.nav-b .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ═══════════════════════════════════════════════════════════
   NAV — Type C (Quote — minimal)
   Used on: Quote page
   ═══════════════════════════════════════════════════════════ */
.nav-c {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 18px 0;
    background: rgba(7, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-c .nav-inner {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-c-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ─── SHARED NAV ELEMENTS ───────────────────────────────── */
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo-mark {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--accent) 0%, #1dd6b4 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 500;
    color: var(--bg);
    flex-shrink: 0;
}

.nav-logo-text {
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--text);
}

.nav-logo-text span {
    color: var(--accent);
}

/* Logo image */
.nav-logo-img {
    display: block;
    height: 48px;
    width: auto;
}

/* ─── Type A: Nav Links ─────────────────────────────────── */
.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    font-size: 13px;
    color: var(--muted);
    padding: 7px 14px;
    border-radius: 8px;
    transition: color 0.2s, background 0.2s;
}

.nav-link:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.04);
}

.nav-link.active {
    color: var(--accent);
}

.nav-cta {
    font-size: 13px;
    font-weight: 600;
    color: var(--bg);
    background: var(--accent);
    padding: 8px 18px;
    border-radius: 8px;
    transition: opacity 0.2s, box-shadow 0.2s;
}

.nav-cta:hover {
    opacity: 0.88;
    box-shadow: 0 0 20px var(--glow);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-lang-switch {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 38px;
    padding: 7px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
    transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.nav-lang-switch:hover {
    color: var(--text);
    border-color: rgba(62, 243, 210, 0.3);
    background: rgba(255, 255, 255, 0.03);
}

/* ─── Type B: Right side buttons ────────────────────────── */
.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.btn-ghost-sm {
    font-size: 13px;
    font-weight: 500;
    color: var(--muted);
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: color 0.2s, border-color 0.2s;
}

.btn-ghost-sm:hover {
    color: var(--text);
    border-color: var(--accent);
}

.btn-accent-sm {
    font-size: 13px;
    font-weight: 600;
    color: var(--bg);
    background: var(--accent);
    padding: 8px 18px;
    border-radius: 8px;
    transition: opacity 0.2s, box-shadow 0.2s;
}

.btn-accent-sm:hover {
    opacity: 0.88;
    box-shadow: 0 0 20px var(--glow);
}

/* ─── Hamburger ─────────────────────────────────────────── */
.hamburger {
    width: 36px;
    height: 36px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    cursor: pointer;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: transparent;
    padding: 0;
    transition: border-color 0.2s;
}

.hamburger:hover {
    border-color: var(--accent);
}

.hamburger span {
    display: block;
    width: 16px;
    height: 1.5px;
    background: var(--muted);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(.22, 1, .36, 1);
}

.hamburger.open span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
    background: var(--accent);
}

.hamburger.open span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.open span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
    background: var(--accent);
}

/* ─── Type C: Back button ───────────────────────────────── */
.nav-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
    border: 1px solid var(--border);
    padding: 7px 16px;
    border-radius: 8px;
    transition: color 0.2s, border-color 0.2s;
}

.nav-back:hover {
    color: var(--accent);
    border-color: rgba(62, 243, 210, 0.3);
}

.nav-back svg {
    transition: transform 0.2s;
}

.nav-back:hover svg {
    transform: translateX(-3px);
}

/* ─── OVERLAY MENU ──────────────────────────────────────── */
.overlay-menu {
    position: fixed;
    inset: 0;
    z-index: 99;
    background: rgba(7, 10, 15, 0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s cubic-bezier(.22, 1, .36, 1);
}

.overlay-menu.open {
    opacity: 1;
    pointer-events: all;
}

.overlay-nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
}

.overlay-link {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--muted);
    line-height: 1.1;
    transition: color 0.2s;
    position: relative;
}

.overlay-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s cubic-bezier(.22, 1, .36, 1);
}

.overlay-link:hover {
    color: var(--text);
}

.overlay-link:hover::after {
    transform: scaleX(1);
}

.overlay-cta {
    margin-top: 48px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    font-weight: 600;
    color: var(--bg);
    background: var(--accent);
    padding: 14px 32px;
    border-radius: 10px;
    transition: opacity 0.2s, box-shadow 0.2s;
}

.overlay-cta:hover {
    opacity: 0.88;
    box-shadow: 0 0 32px var(--glow-strong);
}

.overlay-bottom {
    position: absolute;
    bottom: 40px;
    display: flex;
    gap: 32px;
}

.overlay-bottom a {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
    transition: color 0.2s;
}

.overlay-bottom a:hover {
    color: var(--accent);
}

/* ─── RESPONSIVE ────────────────────────────────────────── */
@media (max-width: 600px) {
    .nav-links {
        display: none;
    }

    .nav-right .btn-ghost-sm,
    .nav-right .btn-accent-sm {
        display: none;
    }
}