header {
    background: white;
    padding: 15px 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1800px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    text-decoration: none;
}

.logo img {
    width: 140px;
    height: 60px;
    object-fit: contain;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
    height: 45px;
}

.header-contact-info {
    display: flex;
    align-items: center;
    gap: 20px;
    font-style: normal;
    margin: 0;
    padding: 0;
    height: 100%;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: #555;
    white-space: nowrap;
    text-decoration: none;
    transition: color 0.3s;
    height: 100%;
}

.contact-item:hover {
    color: #1498D5;
}

.contact-icon {
    font-size: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.main-nav {
    display: flex;
    align-items: center;
    height: 100%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 25px;
    margin: 0;
    padding: 0;
    align-items: center;
    height: 100%;
}

.nav-menu li {
    height: 100%;
    display: flex;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.3s;
    white-space: nowrap;
    display: flex;
    align-items: center;
    height: 100%;
}

.nav-menu a:hover {
    color: #1498D5;
}

.header-social-icons {
    display: flex;
    gap: 12px;
    align-items: center;
    height: 100%;
}

.header-social-icons a {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.header-social-icons a img {
    filter: invert(15%) sepia(95%) saturate(2500%) hue-rotate(195deg) brightness(90%) contrast(105%);
    /*transition: filter 0.3s ease;*/
}

.header-social-icons a:hover {
    transform: translateY(-2px);
}

.header-social-icons a:hover img {
    filter: invert(45%) sepia(95%) saturate(1800%) hue-rotate(175deg) brightness(95%) contrast(90%);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    flex-shrink: 0;
}

.mobile-menu-toggle span {
    width: 100%;
    height: 3px;
    background: #333;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-47deg) translate(3px, -4px)
}

@media (max-width: 1700px) {
    .header-left {
        gap: 8px;
    }

    .header-contact-info {
        gap: 10px;
    }

    .contact-item {
        font-size: 11px;
        gap: 5px;
    }

    .contact-icon {
        font-size: 14px;
    }
}

@media (max-width: 1600px) {
    .logo img {
        width: 130px;
        height: 58px;
    }

    .header-left {
        gap: 5px;
    }

    .header-contact-info {
        gap: 8px;
    }

    .contact-item {
        font-size: 11px;
        gap: 4px;
    }

    .contact-icon {
        font-size: 14px;
    }

    .nav-menu {
        gap: 20px;
    }

    .nav-menu a {
        font-size: 14px;
    }

    .header-social-icons a {
        width: 42px;
        height: 42px;
    }
}

@media (max-width: 1400px) {
    .logo img {
        width: 120px;
        height: 54px;
    }

    .header-left {
        gap: 4px;
    }

    .header-contact-info {
        gap: 6px;
    }

    .contact-item {
        font-size: 10px;
        gap: 3px;
    }

    .contact-icon {
        font-size: 12px;
    }

    .nav-menu {
        gap: 18px;
    }

    .nav-menu a {
        font-size: 13px;
    }

    .header-social-icons {
        gap: 10px;
    }

    .header-social-icons a {
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 1300px) {
    .header-left {
        gap: 2px;
    }

    .header-contact-info {
        gap: 5px;
    }

    .contact-item {
        font-size: 10px;
        gap: 2px;
    }

    .contact-icon {
        font-size: 12px;
    }

    .nav-menu {
        gap: 16px;
    }

    .nav-menu a {
        font-size: 12px;
    }
}

@media (max-width: 1250px) {
    .header-contact-info {
        display: none;
    }
}

@media (max-width: 1000px) {
    .logo img {
        width: 110px;
        height: 50px;
    }

    .nav-menu {
        gap: 14px;
    }

    .nav-menu a {
        font-size: 12px;
    }

    .header-social-icons {
        gap: 8px;
    }

    .header-social-icons a {
        width: 36px;
        height: 36px;
    }
}

@media (max-width: 900px) {
    header {
        padding: 12px 15px;
    }

    .header-container {
        gap: 15px;
    }

    .mobile-menu-toggle {
        display: flex !important;
    }

    .logo img {
        width: 120px;
        height: 50px;
    }

    .header-contact-info {
        display: none;
    }

    .header-social-icons {
        display: none;
    }

    .main-nav {
        position: absolute;
        width: 0;
        height: 0;
        overflow: visible;
    }

    .nav-menu {
        display: none;
        position: fixed !important;
        top: 32px !important;
        left: 0 !important;
        width: 100vw !important;
        height: auto !important;
        background: white;
        flex-direction: column;
        gap: 0;
        padding: 20px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        z-index: 1000;
        list-style: none;
    }

    .nav-menu.active {
        display: flex !important;
    }

    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid #f0f0f0;
        height: auto;
        display: block;
        list-style: none;
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

    .nav-menu a {
        display: block;
        padding: 15px 10px;
        font-size: 16px;
        white-space: normal;
        height: auto;
    }
}

@media (max-width: 480px) {
    header {
        padding: 10px 15px;
    }

    .logo img {
        width: 100px;
        height: 45px;
    }
}

@media (min-width: 2000px) {
    .header-container {
        max-width: 2600px;
        padding: 0 0px;
    }

    .logo img {
        width: 160px;
        height: 68px;
    }

    .header-left {
        gap: 20px;
        margin-right: auto;
    }

    .header-contact-info {
        gap: 25px;
    }

    .contact-item {
        font-size: 15px;
        gap: 9px;
    }

    .contact-icon {
        font-size: 18px;
    }

    .nav-menu {
        gap: 30px;
    }

    .nav-menu a {
        font-size: 16px;
    }

    .header-social-icons {
        gap: 5px;
        margin-left: auto;
    }

    .header-social-icons a {
        width: 50px;
        height: 50px;
    }
}