.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.08);
    z-index: 1000;
    padding: 1rem 2rem;
}

.header-inner {
    max-width: 1360px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    align-items: center;
    gap: 2rem;
    position: relative;
}

.logo-area {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.logo-area img {
    height: 88px;
    width: auto;
}

.nav-primary {
    min-width: 0;
    justify-self: center;
    display: flex;
    justify-content: center;
}

.primary-nav {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 1.8rem;
    font-size: 0.98rem;
    justify-content: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    text-decoration: none;
    color: #1f2d3d;
    font-weight: 600;
    font-size: 0.98rem;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
    white-space: nowrap;
}

.nav-link::after {
    content: "";
    display: inline-block;
    border: 4px solid transparent;
    border-top-color: currentColor;
    margin-left: 0.2rem;
    transform: translateY(1px);
}

.nav-item:not(.has-mega) .nav-link::after {
    display: none;
}

.nav-link:hover,
.nav-item:focus-within .nav-link {
    color: #0057b8;
}

.mega-menu,
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #ffffff;
    border-radius: 18px;
    box-shadow: 0 25px 60px rgba(15, 35, 95, 0.15);
    opacity: 0;
    transform: translateY(10px);
    pointer-events: none;
    transition: all 0.25s ease;
}

.mega-menu::before,
.dropdown-menu::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 18px;
    transform: translateY(-100%);
}

@media (hover: hover) {
    .mega-menu::before,
    .dropdown-menu::before {
        pointer-events: auto;
    }
}

.nav-item:hover .mega-menu,
.nav-item:focus-within .mega-menu,
.nav-item:hover .dropdown-menu,
.nav-item:focus-within .dropdown-menu {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.mega-menu {
    width: 980px;
    padding: 2.5rem 3rem;
}

.mega-columns {
    display: grid;
    grid-template-columns: repeat(4, minmax(160px, 1fr));
    gap: 2.5rem;
}

.mega-column h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: #0b3a75;
    margin-bottom: 0.75rem;
}

.mega-column ul {
    list-style: none;
    display: grid;
    gap: 0.55rem;
}

.mega-column a {
    color: #51606f;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.mega-column a:hover {
    color: #0057b8;
}

.mega-column .highlight {
    font-weight: 700;
    color: #0057b8;
}

.dropdown-menu {
    min-width: 260px;
    padding: 1.5rem;
}

.dropdown-menu ul {
    list-style: none;
    display: grid;
    gap: 0.65rem;
}

.dropdown-menu a {
    color: #51606f;
    font-weight: 500;
    text-decoration: none;
}

.dropdown-menu a:hover {
    color: #0057b8;
}

.header-contact {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-self: end;
    gap: 0.4rem;
}

.header-phone,
.header-text {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: #1f2d3d;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    transition: all 0.25s ease;
    white-space: nowrap;
    background: rgba(0, 102, 204, 0.05);
    gap: 0.5rem;
    min-width: 160px;
    width: 100%;
}

.header-phone svg,
.header-text svg {
    flex-shrink: 0;
    color: #0057b8;
}

.header-phone:hover,
.header-text:hover {
    background: rgba(0, 102, 204, 0.1);
    color: #0057b8;
    transform: translateY(-1px);
}

.header-phone span,
.header-text-label {
    color: inherit;
}

@media (max-width: 1200px) {
    .header-contact {
        flex-direction: row;
        align-items: center;
        gap: 0.5rem;
    }
    
    .header-phone,
    .header-text {
        min-width: auto;
        width: auto;
        padding: 0.5rem 0.9rem;
        font-size: 0.85rem;
    }
    
    .header-text-label {
        display: none;
    }
    
    .header-text {
        padding: 0.5rem;
        min-width: 40px;
        justify-content: center;
    }
}

.nav-cta-button {
    justify-self: end;
    margin-left: 0;
    background: linear-gradient(135deg, #0066cc 0%, #004799 100%);
    color: white;
    padding: 0.9rem 2.1rem;
    border-radius: 32px;
    text-decoration: none;
    font-weight: 700;
    letter-spacing: 0.02em;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    box-shadow: 0 12px 30px rgba(0, 102, 204, 0.2);
    white-space: nowrap;
}

.nav-cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 40px rgba(0, 102, 204, 0.3);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    display: block;
    width: 26px;
    height: 3px;
    background: #1f2d3d;
    border-radius: 999px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.header-inner.is-open .menu-toggle span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.header-inner.is-open .menu-toggle span:nth-child(2) {
    opacity: 0;
}

.header-inner.is-open .menu-toggle span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

@media (max-width: 768px) {
    .header-inner {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }

    .nav-primary {
        width: 100%;
    }

    .primary-nav {
        flex-direction: column;
        width: 100%;
        gap: 1rem;
    }

    .nav-item {
        width: 100%;
    }

    .nav-link {
        width: 100%;
        justify-content: space-between;
        padding: 0.75rem 0;
    }

    .nav-link::after {
        display: none;
    }

    .mega-menu,
    .dropdown-menu {
        position: static;
        opacity: 1;
        transform: none;
        pointer-events: auto;
        box-shadow: none;
        width: 100%;
        margin-top: 0.5rem;
    }

    .mega-menu {
        padding: 1.5rem 0;
    }

    .dropdown-menu {
        padding: 0.5rem 0 1rem;
    }

    .mega-columns {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .header-contact {
        width: 100%;
        flex-direction: row;
        justify-content: center;
        order: 4;
        gap: 0.75rem;
    }

    .header-phone,
    .header-text {
        min-width: auto;
        width: auto;
    }

    .header-phone {
        flex: 1;
        justify-content: center;
        padding: 0.75rem 1.5rem;
    }

    .header-text {
        flex: 0 0 auto;
        padding: 0.75rem 1rem;
    }

    .header-text-label {
        display: none;
    }

    .nav-cta-button {
        align-self: stretch;
        text-align: center;
        order: 5;
    }

    .nav-item.is-expanded > .mega-menu {
        padding-top: 1.25rem;
        padding-bottom: 1.5rem;
    }

    .nav-item.is-expanded > .dropdown-menu {
        padding-top: 0.5rem;
        padding-bottom: 1.25rem;
    }
}

@media (max-width: 1024px) {
    .menu-toggle {
        display: flex;
    }

    .header-inner {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 1.25rem;
        flex-wrap: wrap;
        justify-content: space-between;
        width: 100%;
    }

    .logo-area {
        order: 1;
    }

    .menu-toggle {
        order: 2;
    }

    .nav-primary {
        order: 3;
        width: 100%;
    }

    .header-contact {
        order: 4;
        width: 100%;
        flex-direction: row;
        justify-content: center;
        gap: 0.75rem;
    }

    .header-phone,
    .header-text {
        min-width: auto;
        width: auto;
    }

    .header-phone {
        flex: 1;
        justify-content: center;
    }

    .header-text {
        flex: 0 0 auto;
        padding: 0.6rem 1rem;
    }

    .header-text-label {
        display: none;
    }

    .nav-cta-button {
        order: 5;
        width: 100%;
        text-align: center;
    }

    .nav-primary {
        display: block;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        max-height: 70vh;
        overflow-y: auto;
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
        background: rgba(255, 255, 255, 0.98);
        box-shadow: 0 20px 40px rgba(15, 35, 95, 0.12);
        border-bottom-left-radius: 24px;
        border-bottom-right-radius: 24px;
        transform: translateY(-10px);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease, transform 0.3s ease;
        padding: 1.5rem 2rem 2.5rem;
    }

    .header-inner.is-open .nav-primary {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    .primary-nav {
        flex-direction: column;
        gap: 1.25rem;
    }

    .mega-menu,
    .dropdown-menu {
        position: static;
        width: 100%;
        box-shadow: none;
        transform: none;
        margin-top: 0;
        padding: 0;
        max-height: 0;
        opacity: 0;
        pointer-events: none;
        overflow: hidden;
        transition: max-height 0.3s ease, opacity 0.25s ease;
    }

    .nav-item.is-expanded > .mega-menu,
    .nav-item.is-expanded > .dropdown-menu {
        max-height: 2000px;
        opacity: 1;
        pointer-events: auto;
        padding: 0.75rem 0 1rem;
    }

    .mega-columns {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .nav-cta-button {
        margin-left: 0;
        justify-self: end;
    }
}