* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
}

.duop-gray-color {
    color: #8c8c8c;
    display: block;
}

.duop-header {
    display: flex;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    background-color: #ffffff;
}

.duop-header__logo {
    padding: 0 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: white;
    img {
        width: 100px;
        height: 100px;
    }
}

.duop-header__side {
    width: 100%;
}

.duop-header__side__contact {
    background-color: #FF8A00;
    display: flex;
    justify-content:space-between;
    align-items: center;
    padding: 10px 25px;
    color: white;
    font-size: 12px;
}

.duop-header__side__contact__social-media {

    a {
        font-size: 16px;
        margin-left: 10px;
        text-decoration: none;
        i {
            color: white;
            width: 35px;
            height: 35px;
            border-radius: 50%;
            border: 1px solid white;
            display: inline-flex;
            justify-content: center;
            align-items: center;
            font-size: 18px;
            transition: all 0.3s ease;
        }
    }

    a:hover {
        i {
            background-color: white;
            color: #FF8A00;
        }
    }
}

.duop-header__side__nav {
    background-color: #171717;
    color: white;
    height: auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    padding: 10px 25px;

    ul {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        list-style: none;
        padding: 0;
        
        gap: 0 50px;
        margin: 0;

        li {
            a {
                text-decoration: none;
                color: white;
                font-size: 14px;
                transition: all 0.3s ease;
            }

            a:hover {
                color: #FF8A00;
            }
        }
    }
}

.duop-header__side__nav__button {
    button {
        background-color: #FFFFFF;
        color: #0e0e0e;
        border: none;
        padding: 8px 25px;
        border-radius: 20px;
        transition: all 0.3s ease;
    }

    button:hover {
        background-color: #FF8A00;
        color: white;
    }
}

/* Mobile Menu Toggle Button */
.duop-mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    position: relative;
}

.duop-mobile-menu-toggle span {
    width: 100%;
    height: 3px;
    background-color: #FF8A00;
    border-radius: 2px;
    transition: all 0.3s ease;
    transform-origin: center;
}

.duop-mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

.duop-mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Navigation */
.duop-mobile-nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.2s ease, visibility 0.2s ease;
}

.duop-mobile-nav--active {
    opacity: 1;
    visibility: visible;
    max-height: 80vh;
}

.duop-mobile-nav__content {
    background-color: #171717;
    width: 100%;
    max-height: 80vh;
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;
    overflow-y: auto;
}

.duop-mobile-nav--active .duop-mobile-nav__content {
    transform: translateY(0);
}

.duop-mobile-nav__header {
    display: flex;
    justify-content: end;
    align-items: center;
    border-bottom: 1px solid #333;
    button {
        padding-right: 20px;
        padding-top: 10px;
    }
}

.duop-mobile-nav__header img {
    width: 60px;
    height: 60px;
}

.duop-mobile-nav__close {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.duop-mobile-nav__close:hover {
    background-color: #FF8A00;
}

.duop-mobile-nav__menu {
    padding: 20px;
}

.duop-mobile-nav__menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.duop-mobile-nav__menu li {
    margin-bottom: 15px;
}

.duop-mobile-nav__menu a {
    color: white;
    text-decoration: none;
    font-size: 18px;
    font-weight: 500;
    display: block;
    padding: 10px 0;
    border-bottom: 1px solid #333;
    transition: all 0.3s ease;
}

.duop-mobile-nav__menu a:hover {
    color: #FF8A00;
    padding-left: 10px;
}

.duop-mobile-nav__contact {
    padding: 20px;
}

.duop-mobile-nav__contact__info {
    margin-bottom: 20px;
}

.duop-mobile-nav__contact__info span {
    color: #8c8c8c;
    font-size: 14px;
    display: block;
    margin-bottom: 15px;
}

.duop-mobile-nav__contact__social {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.duop-mobile-nav__contact__social a {
    color: #FF8A00;
    width: 35px;
    height: 35px;
    border: 1px solid #FF8A00;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.duop-mobile-nav__contact__social a:hover {
    background-color: #FF8A00;
    color: white;
}

.duop-mobile-nav__button {
    width: 100%;
    background-color: #FF8A00;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.duop-mobile-nav__button:hover {
    background-color: #e67a00;
    transform: translateY(-2px);
}

/* Prevent body scroll when mobile menu is open */
.duop-no-scroll {
    overflow: hidden;
}


.duop-hero {
    width: 100%;
    height: 90vh;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.duop-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../assets/images/background2.png');
    background-size: cover;
    background-position: bottom;
    background-repeat: no-repeat;
    z-index: -2;
}

.duop-hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: -1;
}

.duop-hero__container {
    display: flex;
    justify-content: flex-end;
}

    .duop-hero__container__content {
        color: white;

    p{
        background-color: #FF8A00;
        width: fit-content;
        padding: 5px 20px;
        font-weight: 700;
    }

    h1 {
        font-size: 70px;
        font-weight: 700;
        line-height: 0.9;

        span{
            color: #FF8A00;
        }
    }

    button {
        background-color: white;
        color: #0e0e0e;
        border: none;
        padding: 10px 30px;
        border-radius: 20px;
        transition: all 0.3s ease;
    }

    button:hover {
        background-color: #FF8A00;
        color: white;
    }
}

/* Additional mobile styles for hero section */
@media (max-width: 480px) {
    .duop-hero__container__content h1 {
        font-size: 50px;
    }
    
    .duop-hero__container__content button {
        padding: 8px 20px;
        font-size: 14px;
    }
}

.duop-about-us {
    padding: 100px 0;
    background-color: #FAFAFA;
}

.duop-about-us__left__content {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto;
}

.duop-about-us__left__content img {
    position: absolute;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
    width: 75%;
}

.duop-about-us__left__content img:first-child {
    bottom: -100px;
    right: 50%;
    z-index: 2;
}

.duop-about-us__left__content img:last-child {
    top: 0;
    left: 35%;
    transform: translateY(-30%) translateX(-25%);
    z-index: 1;
}

.duop-about-us__right__content {
    span {
        color: #8c8c8c;
    }

    h3 {
        position: relative;
        display: inline-block;
        font-weight: 700;
        padding-bottom: 15px;
    }

    h3::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 20%;
        height: 7px;
        background-color: #FF8A00;
    }
}

.duop-button-white {
    background-color: white;
    color: #FF8A00;
    border: 1px solid #FF8A00;
    padding: 8px 30px;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.duop-button-white:hover {
    background-color: #FF8A00;
    color: white;
}

.duop-about-us__right__content__characteristics {
    display: block;
}

.duop-about-us__right__content__characteristics__item {
    display: flex;
    justify-content: center;
    align-items: start;
    gap: 15px;
    i {
        font-size: 45px;
        color: #FF8A00 !important;
    }
}

.duop-about-us__right__content__characteristics__item__content {
    h5 {
        color: #FF8A00;
        font-weight: 600;
    }
}

.duop-our-services {
    background-color: white;
    padding: 100px 0;
}

.duop-our-services__left__content {
    span {
        color: #8c8c8c;
    }

    h3 {
        font-weight: 700;
        position: relative;
        display: inline-block;
        padding-bottom: 15px;
    }

    h3::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 20%;
        height: 7px;
        background-color: #FF8A00;
    }

    p {
        margin-top: 20px;
        color: #8c8c8c;
    }
}

.duop-our-services__right__card {
    display: flex;
    flex-direction: column;
    align-items: start;
    justify-content: center;
    gap: 10px;
    i {
        font-size: 2em;
        color: #FF8A00;
    }

    h6 {
        font-weight: 700;
        margin-bottom: 0;
    }
}

.duop-gallery {
    background-color: #FAFAFA;
    padding: 100px 0;
}

.duop-title {
    font-weight: 700;
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
    --underline-width: 100%;
    --underline-height: 7px;
}

.duop-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: var(--underline-width);
    height: var(--underline-height);
    background-color: #FF8A00;
}

.duop-gallery__card {

    display: flex;
    justify-content: center;
    align-items: center;

    img {
        max-width: 100%;
        min-width: 100%;
        min-height: 300px;
        max-height: 300px;
        object-fit: cover;
    }
}

.duop-clients {
    background-color: #FAFAFA;
    padding-bottom: 75px;

    .duop-clients__logo {
        filter: grayscale(100%);
        transition: transform 0.3s ease, filter 0.3s ease;
        max-height: 80px;
        min-height: 80px;
        min-width: 100%;
        max-width: 100%;
        object-fit: contain;
        margin: 20px 0;
        padding: 0 20px;
    }

    .duop-clients__logo:hover {
        filter: grayscale(0%);
        transform: scale(1.1);
    }
}

.duop-certificates {
    padding: 90px 0;
}

.duop-certificates__certificates {
    display: flex;
    justify-content: end;
    align-items: center;
    gap: 10px;
}

.duop-certificates__certificates__item {
    position: relative;

    div {
        position: absolute;
        color: white;
        font-weight: 700;
        top: 15%;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 85%;
        background: linear-gradient(
        to bottom,
        rgba(255,138,0,0) 0%,
        rgba(255,138,0,1) 30%,
        rgba(255,138,0,1) 100%
        );
        z-index: 10;
        transition: all 0.3s ease;
    }

    p{ 
        position: absolute;
        display: flex;
        align-items: center;
        color: white;
        font-weight: 700;
        top: 0;
        bottom: 0;
        right: 0;
        left: 0;
        z-index: 100;
        writing-mode: sideways-lr;
        text-shadow: 0 0 10px rgba(0, 0, 0, 0.7);
        transition: all 0.3s ease;
    }

    img {
        position: relative;
        max-width: 100px;
        min-width: 100px;
        min-height: 300px;
        max-height: 300px;
        transition: all 0.3s ease;
    }
}

.duop-certificates__certificates__item:hover {
    position: relative;

    div {
        top: 60%;
        width: 100%;
        height: 40%;
        background: linear-gradient(
        to bottom,
        rgba(255,138,0,0) 0%,
        rgba(255,138,0,1) 95%,
        rgba(255,138,0,1) 100%
        );
    }

    p{ 
        writing-mode: horizontal-tb;
        align-items: end;
        justify-content: center;
    }

    img{
        min-width: 250px;
        max-width: 250px;
        min-height: 300px;
        max-height: 300px;
    }
}

.duop-end-message {
    width: 100%;
    height: 65vh;
    position: relative;
    color: white;
}

.duop-end-message::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../assets/images/background3.png');
    background-size: cover;
    background-position: 25% 75%;
    background-repeat: no-repeat;
    z-index: -2;
}

.duop-end-message::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: -1;
}

.duop-footer {
    background-color: #171717;
    padding: 75px 0;
    color: white;
}

.duop-footer__logo {
    position: relative;
    z-index: 100;

    img {
        min-height: 100px;
        max-height: 100px;
    }
}

.duop-footer__logo::before {
    content: '';
    position: absolute;
    background-color: white;
    top: 0;
    right: 100%;
    left: -850px;
    width: 1000px;
    height: 100%;
    z-index: -1;
}

.duop-footer__social-media {
    a {
        font-size: 16px;
        margin-left: 10px;
        text-decoration: none;
        i {
            color: #FF8A00;
            width: 35px;
            height: 35px;
            border-radius: 50%;
            border: 1px solid #FF8A00;
            display: inline-flex;
            justify-content: center;
            align-items: center;
            font-size: 18px;
            transition: all 0.3s ease;
        }
    }

    a:hover {
        i {
            background-color: white;
            color: #FF8A00;
        }
    }
}

.duop-footer__list__title {
    color: #FF8A00;
    font-weight: 700;
}

.duop-footer__list__list {
    list-style: none;
    margin: 0;
    padding: 0;
    li {
        margin-bottom: 10px;
        a {
            text-decoration: none;
            color: white;
            transition: all 0.3s ease;
        }

        a:hover {
            color: #FF8A00;
        }
    }
}

.duop-footer__contact__item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    i {
        color: #FF8A00;
    }
    p{
        margin: 0;
    }
}

.duop-footer__copyright {
    background-color: #FF8A00;
    color: white;

    p {
        a {
            text-decoration: none;
            color: white;
        }
    }
}

@media (max-width: 1220px) {
    /* Header responsive adjustments */
    .duop-header {
        position: fixed;
    }

    main {
        margin-top: 100px;
    }

    .duop-header__logo {
        padding: 0 20px;
    }

    .duop-header__logo img {
        width: 80px;
        height: 80px;
    }

    .duop-mobile-menu-toggle {
        display: flex;
        position: absolute;
        right: 20px;
        top: 50%;
        transform: translateY(-50%);
    }

    .duop-header__side {
        display: none;
    }
}

@media (max-width: 991px) {
    .duop-about-us__left__content {
        width: 300px;
        height: 300px;
    }
}


@media (max-width: 768px) {

    .duop-hero__container {
        justify-content: center;
    }

    .duop-about-us__left__content {
        margin: 100px auto;
        width: 300px;
        height: 300px;
    }

    .duop-about-us__left__content img:first-child {
        left: 0;
        bottom: 0;
    }
    
    .duop-about-us__left__content img:last-child {
        left: 60%;
        transform: translateY(-40%) translateX(-25%);
    }

    .duop-about-us {
        padding: 50px 0;
    }

    .duop-our-services {
        padding: 50px 0;
    }

    .duop-gallery {
        padding: 50px 0;
    }

    .duop-clients {
        padding: 50px 0;
    }

    .duop-certificates {
        padding: 50px 0;
    }

    .duop-certificates__certificates {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 10px;
    }

    .duop-certificates__certificates__item {
        position: relative;
        padding-top: 20px;
    
        div {
            top: 60%;
            width: 100%;
            height: 40%;
            background: linear-gradient(
            to bottom,
            rgba(255,138,0,0) 0%,
            rgba(255,138,0,1) 95%,
            rgba(255,138,0,1) 100%
            );
        }
    
        p{ 
            writing-mode: horizontal-tb;
            align-items: end;
            justify-content: center;
        }
    
        img{
            min-width: 250px;
            max-width: 250px;
            min-height: 300px;
            max-height: 300px;
        }
    }
}

@media screen and (max-width: 480px) {
    .duop-about-us__left__content img:last-child {
        left: 50%;
        transform: translateY(-30%) translateX(-25%);
    }
}