/* ========== NAV ========== */
/* ========== NAVBAR ========== */
nav {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: 64px;
    background: #ffffff;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2.5rem;
    transition: background 0.4s ease, border-color 0.4s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

nav.dark {
    background: #232731;
    border-bottom-color: rgba(255, 255, 255, 0.06);
}

.nav-logo {
    height: 36px;
    display: flex;
    align-items: center;
}

.nav-logo a {
    height: 100%;
    display: flex;
    align-items: center;
}

.nav-logo img {
    height: 100%;
    width: auto;
    object-fit: contain;
}

.nav-logo .logo-light { display: none; }
.nav-logo .logo-dark { display: block; }
nav.dark .nav-logo .logo-light { display: block; }
nav.dark .nav-logo .logo-dark { display: none; }

.nav-links {
    display: flex;
    gap: 1.75rem;
    align-items: center;
    justify-content: flex-end;
}

.nav-links a {
    font-family: 'Inter', sans-serif;
    font-size: 0.88rem;
    font-weight: 500;
    letter-spacing: 0.03rem;
    white-space: nowrap;
    text-transform: none;
    color: #2d2d3f;
    text-decoration: none;
    transition: color 0.3s ease;
    cursor: pointer;
    position: relative;
}

/* Wide desktop — restore original generous spacing */
@media (min-width: 1300px) {
    .nav-links { gap: 3.25rem; }
    .nav-links a { font-size: 1rem; }
    .nav-cta { font-size: 0.7rem; padding: 0.55rem 1.5rem; }
}

nav.dark .nav-links a { color: #b8bcc8; }
.nav-links a:hover { color: #22aaee; }

/* Active nav link indicator */
.nav-links a.active {
    color: #22aaee;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0;
    width: 0; height: 2px;
    background: linear-gradient(90deg, #22aaee, #22aaee);
    border-radius: 1px;
    transition: width 0.3s ease;
}
.nav-links a.active::after {
    width: 100%;
}

/* ========== SERVICES DROPDOWN ========== */
.nav-dropdown {
    position: relative;
    display: flex;
    align-items: center;
}
.nav-dropdown > a {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.nav-dropdown .chevron {
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
    margin-left: 4px;
    transition: transform 0.25s ease;
}
.nav-dropdown:hover .chevron,
.nav-dropdown.mobile-open .chevron {
    transform: rotate(180deg);
}
.services-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(0);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    background: #232731;
    border: 1px solid rgba(34, 170, 238, 0.12);
    border-radius: 10px;
    padding: 0.5rem 0;
    padding-top: 1rem;
    min-width: 220px;
    z-index: 200;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}
nav:not(.dark) .services-dropdown {
    background: rgba(255, 255, 255, 0.98);
    border-color: rgba(0, 0, 0, 0.08);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}
.nav-dropdown:hover .services-dropdown,
.nav-dropdown.mobile-open .services-dropdown {
    opacity: 1;
    pointer-events: auto;
}
.services-dropdown a {
    display: block;
    padding: 0.55rem 1.25rem;
    font-family: 'Inter', sans-serif;
    font-size: 0.82rem;
    font-weight: 500;
    color: #8892a4;
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
    white-space: nowrap;
    letter-spacing: 0;
    border: none;
}
nav:not(.dark) .services-dropdown a {
    color: #5a6178;
}
.services-dropdown a:hover {
    background: rgba(34, 170, 238, 0.08);
    color: #22aaee;
}

/* Active service submenu item — dot indicator (no underline) */
.services-dropdown a::after {
    display: none;
}
.services-dropdown a.active {
    color: #22aaee;
}
.services-dropdown a.active::before {
    content: '';
    display: inline-block;
    width: 5px;
    height: 5px;
    background: #22aaee;
    border-radius: 50%;
    margin-right: 8px;
    vertical-align: middle;
}

/* Mobile CTA — hidden on desktop */
.mobile-cta { display: none; }

/* Nav CTA — upgraded with gradient */
.nav-cta {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.12rem;
    text-transform: uppercase;
    background: linear-gradient(135deg, #22aaee, #22aaee);
    color: #ffffff;
    border: none;
    padding: 0.55rem 1.1rem;
    border-radius: 24px;
    cursor: pointer;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    box-shadow: 0 2px 12px rgba(34, 170, 238, 0.25);
    white-space: nowrap;
}

.nav-cta:hover {
    box-shadow: 0 4px 20px rgba(34, 170, 238, 0.4);
    transform: translateY(-1px);
}

/* Hamburger */
.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
    width: 28px;
    height: 28px;
    align-items: center;
    justify-content: center;
}

.nav-hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background: #4a4a5a;
    transition: transform 0.3s ease, opacity 0.3s ease;
    transform-origin: center;
}

nav.dark .nav-hamburger span { background: #8892a4; }

/* ========== MOBILE NAV ========== */
@media (max-width: 1080px) {
    nav { padding: 0 1.25rem; }

    .nav-hamburger { display: flex; }

    /* Desktop CTA hidden — it moves into the mobile menu */
    nav > .nav-cta { display: none; }

    /* Mobile menu panel */
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        justify-content: flex-start;
        background: #ffffff;
        padding: 1.5rem 1.5rem 2rem;
        z-index: 99;
        transform: translateY(-10px);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease, transform 0.3s ease;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
        border-bottom-left-radius: 12px;
        border-bottom-right-radius: 12px;
    }

    nav.dark .nav-links {
        background: #232731;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    }

    nav.mobile-open .nav-links {
        opacity: 1;
        transform: translateY(0);
        pointer-events: all;
    }

    .nav-links a {
        font-size: 0.95rem;
        font-weight: 700;
        padding: 1.1rem 0;
        border-bottom: 1px solid rgba(0, 0, 0, 0.08);
        width: 100%;
        color: #1a1a2e;
    }

    nav.dark .nav-links a {
        color: #c8cdd8;
        border-bottom-color: rgba(255, 255, 255, 0.08);
    }

    .nav-links a::after { display: none; }

    .nav-links a.active {
        color: #22aaee;
        border-left: 3px solid #22aaee;
        padding-left: 0.75rem;
    }

    /* Mobile dropdown overrides */
    .nav-dropdown {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }
    .nav-dropdown > a {
        display: flex;
        justify-content: space-between;
        width: 100%;
    }
    .services-dropdown {
        position: static;
        opacity: 0;
        max-height: 0;
        overflow: hidden;
        transform: none;
        transition: opacity 0.25s ease, max-height 0.3s ease;
        background: transparent;
        border: none;
        border-radius: 0;
        padding: 0;
        margin: 0;
        box-shadow: none;
        min-width: 0;
    }
    nav:not(.dark) .services-dropdown {
        background: transparent;
        border: none;
        box-shadow: none;
    }
    .nav-dropdown.mobile-open .services-dropdown {
        opacity: 1;
        pointer-events: auto;
        max-height: 500px;
        padding: 0.25rem 0 0.5rem;
    }
    .services-dropdown a {
        padding: 0.6rem 0 0.6rem 1.25rem;
        font-size: 0.82rem;
        font-weight: 500;
        color: #4a5568 !important;
        border-bottom: none !important;
    }
    nav.dark .services-dropdown a {
        color: #94a3b8 !important;
    }
    .services-dropdown a.active {
        color: #22aaee !important;
        border-left: none;
        padding-left: 1.25rem;
    }
    .services-dropdown a:hover,
    .services-dropdown a:active {
        color: #22aaee !important;
        background: transparent;
    }

    /* CTA inside mobile menu */
    .nav-links .mobile-cta {
        display: block;
        margin-top: 1.5rem;
        font-family: 'JetBrains Mono', monospace;
        font-size: 0.8rem;
        font-weight: 700;
        letter-spacing: 0.12rem;
        text-transform: uppercase;
        background: linear-gradient(135deg, #22aaee, #22aaee);
        color: #ffffff;
        border: none;
        padding: 0.85rem 2rem;
        border-radius: 24px;
        cursor: pointer;
        text-align: center;
        text-decoration: none;
        box-shadow: 0 2px 12px rgba(34, 170, 238, 0.25);
        width: 100%;
    }

    /* Hamburger X animation — correct math for 2px bars + 5px gap */
    nav.mobile-open .nav-hamburger span:nth-child(1) {
        transform: rotate(45deg) translate(2.5px, 2.5px);
    }
    nav.mobile-open .nav-hamburger span:nth-child(2) {
        opacity: 0;
    }
    nav.mobile-open .nav-hamburger span:nth-child(3) {
        transform: rotate(-45deg) translate(2.5px, -2.5px);
    }
}