/* ===== NAVIGATION ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 28px 40px;
    transition: all 0.5s var(--ease-premium);
}

.nav.scrolled {
    padding: 16px 40px;
    background: rgba(5, 5, 5, 0.85);
    backdrop-filter: blur(24px) saturate(1.5);
    -webkit-backdrop-filter: blur(24px) saturate(1.5);
    border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
    max-width: 1320px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
}

.nav-brand-mark {
    width: 10px;
    height: 10px;
    background: var(--accent);
    border-radius: 2px;
    transform: rotate(45deg);
    box-shadow: 0 0 12px var(--accent-glow-strong);
}

.nav-brand-text {
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.10em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.92);
}

.nav-links {
    display: flex;
    gap: 44px;
    list-style: none;
}

.nav-link {
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-tertiary);
    text-decoration: none;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.4s var(--ease-premium);
}

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

.nav-link:hover::after {
    width: 100%;
}

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

.nav-link.active::after {
    width: 100%;
}

/* Hamburger hidden on desktop */
.nav-hamburger {
    display: none;
}

.nav-links .nav-mobile-cta {
    display: none !important;
}

/* ===== CONTAINER ===== */
.container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 40px;
}

/* ===== GRID UTILITIES ===== */
.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.pillar-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
}

.contrast-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

/* ===== APPROACH FLOW ===== */
.approach-flow {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    gap: 0;
    align-items: stretch;
}

.approach-flow .glass-card {
    display: flex;
    flex-direction: column;
}

.flow-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 8px;
}

.flow-arrow svg {
    width: 28px;
    height: 28px;
    stroke: var(--accent);
    fill: none;
    stroke-width: 1.5;
    opacity: 0.5;
}

/* ===== FOOTER ===== */
.footer {
    border-top: 1px solid var(--border-subtle);
    position: relative;
    z-index: 1;
}

.footer-inner {
    max-width: 1320px;
    margin: 0 auto;
    padding: 48px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copy {
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 40px;
    list-style: none;
}

.footer-link {
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--accent-bright);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .approach-flow {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .flow-arrow {
        display: none;
    }

    .two-col,
    .pillar-grid,
    .contrast-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    /* Hamburger button */
    .nav-hamburger {
        display: flex;
        flex-direction: column;
        gap: 5px;
        cursor: pointer;
        z-index: 110;
        padding: 4px;
    }

    .nav-hamburger span {
        display: block;
        width: 24px;
        height: 2px;
        background: var(--text-primary);
        transition: all 0.3s ease;
    }

    .nav-hamburger.open span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .nav-hamburger.open span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    /* Mobile nav overlay */
    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(5, 5, 5, 0.97);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 40px;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.4s ease, visibility 0.4s ease;
        z-index: 105;
    }

    .nav-links.open {
        opacity: 1;
        visibility: visible;
    }

    .nav-links .nav-link {
        font-size: 18px;
        letter-spacing: 0.15em;
    }

    /* Mobile CTA in overlay */
    .nav-links .nav-mobile-cta {
        display: block !important;
        margin-top: 20px;
    }

    .btn-nav {
        display: none;
    }

    .hero-grid,
    .two-col,
    .expertise-grid {
        grid-template-columns: 1fr !important;
    }

    .cta-buttons {
        flex-direction: column !important;
        align-items: center;
    }

    .footer-inner {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 24px;
    }

    .hero-cta-row {
        flex-direction: column;
        align-items: flex-start;
    }
}