.nav a:focus,
.nav button:focus { outline: none; }
.nav a:focus-visible,
.nav button:focus-visible { outline: 2px solid rgba(0,80,201,0.5); outline-offset: 2px; border-radius: 4px; }

.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 50;
    padding: 1rem 1rem 0;
    transition: padding 0.3s ease;
}
.nav-inner {
    max-width: 72rem;
    margin: 0 auto;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 1rem;
    border: 1px solid rgba(255,255,255,0.3);
    box-shadow: 0 8px 32px rgba(0,0,0,0.10);
    padding: 0 1.5rem;
    height: 4rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    transition: all 0.3s ease;
}
.nav-logo img { height: 2rem; display: block; }
.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}
.nav-link {
    position: relative;
    font-size: 0.875rem;
    font-weight: 500;
    color: #4B5563;
    text-decoration: none;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 2px;
    background: linear-gradient(90deg, var(--blue), var(--cyan));
    border-radius: 1px;
    transition: width 0.3s ease;
}
.nav-link:hover { color: var(--blue); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--blue); }
.nav-link.active::after { width: 100%; }

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.nav-link-page {
    display: inline-block;
    padding: calc(0.625rem - 1.5px) 1.375rem;
    border: 1.5px solid rgba(0,80,201,0.4);
    color: var(--blue);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 0.5rem;
    text-decoration: none;
    line-height: 1;
    box-shadow: 0 4px 15px rgba(0,80,201,0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-link-page::after { display: none; }
.nav-link-page:hover {
    border-color: var(--blue);
    background: rgba(0,80,201,0.06);
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 20px rgba(0,80,201,0.15);
}
.nav-link-page.active {
    background: rgba(0,80,201,0.06);
    border-color: var(--blue);
    color: var(--blue);
}
.nav-cta {
    display: inline-block;
    padding: 0.625rem 1.375rem;
    background: linear-gradient(135deg, var(--blue) 0%, var(--cyan) 100%);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 0.5rem;
    text-decoration: none;
    line-height: 1;
    box-shadow: 0 4px 15px rgba(0,80,201,0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-cta:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0,80,201,0.3);
}

/* ── Hamburger ── */
.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    flex-shrink: 0;
}
.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: #0C1221;
    border-radius: 2px;
    transition: transform 0.2s, opacity 0.2s;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Mobile Nav ── */
@media (max-width: 767px) {
    .nav { padding: 0.625rem 0.75rem 0; }
    .nav:has(.nav-open) { bottom: 0; overflow-y: auto; }

    .nav-inner {
        flex-wrap: wrap;
        height: auto;
        padding: 0.75rem 1rem;
        gap: 0;
        border-radius: 0.875rem;
        align-items: center;
    }

    .nav-logo { flex: 0 1 auto; order: 1; }
    .nav-hamburger { display: flex; order: 2; }

    .nav-links,
    .nav-actions {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding-top: 0.75rem;
        margin-top: 0.625rem;
        border-top: 1px solid rgba(0,0,0,0.07);
    }
    .nav-links { order: 3; }
    .nav-actions { order: 4; }

    .nav-inner.nav-open .nav-links,
    .nav-inner.nav-open .nav-actions { display: flex; }
    .nav-inner.nav-open {
        background: #ffffff;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    .nav-link {
        width: 100%;
        padding: 0.5rem 0;
        font-size: 0.9375rem;
    }
    .nav-link:not(.nav-link-page) { border-bottom: 1px solid rgba(0,0,0,0.05); }
    .nav-link:not(.nav-link-page):last-child { border-bottom: none; }

    .nav-actions { margin-top: 0; padding-top: 0.5rem; gap: 0.375rem; }

    .nav-link-page,
    .nav-cta {
        width: 100%;
        text-align: center;
        padding: 0.625rem;
        border-radius: 0.5rem;
    }
    .nav-link-page::after { display: none; }
}