:root {
--dark: #1D2028;
--text: #1a1a1a; /* Melhorado para contraste AAA */
--text-secondary: #4a4a4a; /* Novo: texto secundário com contraste AA */
--gray-200: #eee;
--gray-300: #e0e0e0;
--gray-700: #616161;
--gray-900: #212121;

--primary: #F4C82E;
--primary-dark: #d4a500; /* Novo: amarelo mais escuro para melhor contraste */
--success: #68bd0e;
--danger: #e1251b;
--warning: #ffb82e;

/* Novas variáveis premium */
--shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
--shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
--shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
--shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.15);
--radius-sm: 8px;
--radius-md: 12px;
--radius-lg: 20px;
--radius-xl: 24px;
--transition-fast: 0.2s ease;
--transition-base: 0.3s ease;
--transition-slow: 0.5s ease;
}

.container {
    width: 100%;
    max-width: 1200px;
    padding: 0 16px;
    margin: 0 auto;
} 


.d-flex {
    display: flex;
}

.align-left {
    align-items: flex-start;
}

.align-right {
    align-items: flex-end;
}

.align-center {
    align-items: center;
}

.justify-content-start {
    justify-content: flex-start;
}

.flex-column {
    flex-direction: column;
}

.flex-row {
    flex-direction: row;
}

.space-section {
    margin-bottom: 60px;
    padding: 16px 0;
}

.mt-5 {
    margin-top: 32px;
}


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

a {
    text-decoration: none;
}

a:hover {
    text-decoration: none;
}

html {
    scroll-behavior: smooth;
    font-size: 62.5%;
}

body {
    background: #fff;
    font-family: "Roboto", sans-serif;
    color: var(--text);
    overflow-x: hidden;
}

/* Transições suaves em todos os elementos interativos */
a, button, .btn-primary, .service-item, .navigation a {
    transition: all var(--transition-base);
}

/* Indicadores de foco para acessibilidade */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    /* outline: 3px solid var(--primary); */
    outline-offset: 2px;
}

img {
    transition: transform var(--transition-slow), opacity var(--transition-base);
    max-width: 100%;
    height: auto;
}

img.loaded {
    animation: fadeInImage 0.5s ease;
}

@keyframes fadeInImage {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Animações CSS de suporte */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Smooth scrollbar */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    background: #e0b825;
}


.btn-primary {
    border-radius: var(--radius-xl);
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    height: 54px; 
    font-style: normal;
    font-weight: 600;
    font-size: 1.6rem;
    line-height: 140%;
    text-decoration: none;
    padding: 12px 32px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--primary);
    color: #1a1a1a;
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-primary:focus {
    outline: 3px solid var(--primary);
    outline-offset: 4px;
    box-shadow: 0 0 0 4px rgba(244, 200, 46, 0.2);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-md);
}

.sub-header {
    background: #F5F5F5;
    height: 45px;
    display: flex;
    align-items: center;
}

.sub-header-container { 
    display: flex;
    align-items: center;
    justify-content: flex-end;
}
.sub-header-container p {
    font-size: 1.6rem;
    margin-left: 16px;
    display: flex;
    align-items: center;
    font-weight: 400;
}

.sub-header-container p img {
    margin-right: 8px;
}


header { 
    border-bottom: 1px solid #f5f5f5;
    background: #fff;
    position: relative;
    z-index: 100;
}

header.header-scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.95);
     background: #fff;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 130px;
    background: #fff;
    background: #fff;
}

body {
    background: #fff;
    font-family: "Roboto", sans-serif;
    color: #5A6066;
    overflow-x: hidden;
}

#menu-burger {
    display: none;
    cursor: pointer;
}

.navigation {
    display: flex;
}

.navigation a {
    padding: 12px 24px;
    border-radius: var(--radius-xl);
    color: #2d2d2d;
    font-size: 1.6rem;
    text-decoration: none;
    font-weight: 500;
    box-sizing: border-box;
    transition: all 0.3s ease;
}

.navigation a:hover {
    color: #6B55A1;
    background: rgba(107, 85, 161, 0.08);
    text-decoration: none;
    transform: none;
}

.navigation a.active { 
    color: #6B55A1; 
    background: rgba(107, 85, 161, 0.12);
    box-shadow: none;
}

.banner {
    height: 450px;
    min-height: 450px;
    width: 100%;
    margin-top: -33px;
    position: relative;
}

.banner-item { 
    min-height: 450px;
    height: 450px;
    width: 100vw;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    background-color: #01050E;   
}

.banner1 {
    background-image: url("../img/banner.jpg");   
}

.banner2 {
    background-image: url("../img/banner-vallium-2.jpg");     
}

.banner3 {
    background-image: url("../img/banner-vallium-1.jpg");   
}

.banner4 {
    background-image: url("../img/banner-vallium-1.png");   
}

.banner .box-text {
    width: 100%;
    max-width: 375px;
    color:  var(--text);
    margin-top: 40px
}

.banner .box-text .banner-title {
    font-style: normal;
    font-weight: bold;
    font-size: 3.2rem;
    max-width: 375px;
    line-height: 120%;
    color: #ffffff;
    margin-bottom: 24px;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8);
} 

.banner .box-text p {
    font-family: Roboto;
    font-style: normal;
    font-weight: normal;
    font-size: 1.4rem;
    line-height: 140%;
    color: #f5f5f5;
    margin-bottom: 36px;
    text-shadow: 1px 1px 6px rgba(0, 0, 0, 0.7);
}

.banner .box-text button,
.banner .box-text .button {
    border-radius: var(--radius-xl);
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    height: 54px;
    width: 268px;
    font-style: normal;
    font-weight: 600;
    font-size: 1.6rem;
    line-height: 140%;
    text-decoration: none;
    padding: 12px 32px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.banner .box-text button:hover,
.banner .box-text .button:hover {
    background: var(--primary);
    color: #1a1a1a;
    box-shadow: var(--shadow-xl);
    transform: translateY(-3px);
}

.banner .box-text button:focus,
.banner .box-text .button:focus {
    outline: 3px solid var(--primary);
    outline-offset: 4px;
    box-shadow: 0 0 0 4px rgba(244, 200, 46, 0.2);
}

.banner .align-center {
    display: flex;
    align-items: center;
    height: 100%;
}
.banner-client {
    max-width: 100px;
    margin-right: 16px;
}
.box-clients {
    display: flex;
    margin-top: 32px;
    justify-content: flex-start;
    align-items: center;
}
.banner .box-text .box-clients .banner-client-title {
    margin: 0;
    padding: 0;
}
.owl-nav {
    display: none;
}
.owl-dots {
    position: absolute;
    bottom: 40px;
    z-index: 99;
    left: 50%;
    transform: translate(-50%, -50%);
}

.owl-theme .owl-dots .owl-dot.active span, .owl-theme .owl-dots .owl-dot:hover span{
    background: var(--primary)!important;
    opacity: 0;
}

.owl-dots:last-child {
display: none;
}

#carrousel1 {
margin-bottom: 35px;
}

#carrousel1 .owl-dots {
    display: block;
    bottom: 0px;
}

.owl-dots .owl-dot:last-child {
    display: none;
} 

.highlight {
    color: var(--primary-dark);
    position: relative;
    display: inline-block;
    font-weight: 600;
}

.highlight::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 6px; 
    background: linear-gradient(90deg, var(--primary) 0%, rgba(244, 200, 46, 0.3) 80%, rgba(244, 200, 46, 0) 100%);
    border-radius: 3px;
    opacity: 0.8;
}



.title-section {
    font-size: 3.2rem;
    color: #1a1a1a;
    max-width: 550px;
    margin-bottom: 32px;
    margin-top: 60px;
    line-height: 1.2;
    font-weight: 700;
}


.box-services {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap; 
    width: 100%;
}

.service-item {
    display: flex;
    align-items: center;
    width: 100%;
    max-width: 550px; 
    margin-bottom: 40px;
    background: #fff;
}

.service-item:nth-child(odd) {
    margin-right: 16px;
}

.service-item__texts {
    margin-left: 32px;
}

.service-item__title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--dark);
}

.service-item__description {
    color: var(--text-secondary);
    font-size: 1.6rem;
    font-weight: 400;
    text-align: left;
    line-height: 1.7;
}

.about {
    background-image: linear-gradient(to right, var(--primary) 30%, transparent 0%);  
    min-height: 767px;
    width: 100%;
    display: flex;
    align-items: center;
    margin-bottom: 120px;
}

.about__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 48px;
}

.about__text { 
    max-width: 520px;
}

.about img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-slow);
}

.about img:hover {
    transform: scale(1.02);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.about__text .title-section {
    font-size: 3.6rem;
}

.about__text p {
    font-size: 2.4rem;
    font-weight: 300;
    text-align: left;
    color: var(--text-secondary);
    margin-bottom: 64px;
    line-height: 1.7;
} 

.box-contact {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: nowrap;
    width: 100%;
    gap: 48px;
}

.box-contact__left {
    flex: 1;
    max-width: 520px;
}

.box-contact .cover-contact {
    flex: 1;
    max-width: 480px;
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.box-contact .box-contact__text {
    width: 100%;
    max-width: 520px;
    text-align: justify; 
    font-size: 2rem;
    font-style: normal;
    font-weight: 400;
    line-height: 1.7;
    color: var(--text-secondary);
}

.box-contact .box-contact__text b {
    color: var(--text);
    font-weight: 600;
}

.contact-list {
    list-style: none;
    margin-top: 32px;
}

.contact-list li {
    display: flex;
    align-items: center;
    max-width: 570px;
    margin-bottom: 24px;  
}

.contact-list li a {
    text-decoration: none; 
    font-size: 1.9rem; 
    font-weight: 500; 
    color: #1a1a1a;
}

.contact-list li a:hover {
    color: var(--primary-dark);
}

.contact-list li img {
    margin-right: 16px;
}




footer {
    border-top: 2px solid var(--primary);
    background: #1a1a1a;
    width: 100%;
    height: 110px;
    display: flex;
    align-items: center;
    margin-top: 110px;
}

.footer-text {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    font-weight: 300;
}

.footer-text p {
    font-size: 1.6rem;
    color: #e0e0e0;
    margin-bottom: 8px;
}

.footer-text a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
}

.footer-text a:hover {
    color: #ffc107;
}


.products-secondary {
    background: #f8f8f8;
    min-height: 1000px; 
    padding-top: 8px;
    padding-bottom: 100px;
    box-sizing: border-box;
    margin-bottom: 120px;
}

.box-products-secondary {
    background: #fff;
    min-height: 800px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    padding: 32px 64px;

}

.products-secondary__panel {
    background: #1D2028;
    width: 100%;
    max-width: 500px;
    height: 700px;
    min-height: 100%; 
    border-radius: 6px;
    padding: 32px;
    box-sizing: border-box;
}
.products-secondary__list ul {
    list-style: none;
}

 

.service-list li {
    font-size: 1.8rem;
    font-weight: 500;
    color: #1a1a1a;
    margin-bottom: 12px; 
    margin-left: 20px;
    padding: 10px 12px;
    background: transparent;
}

.products-secondary__list ul li {
    font-size: 2.4rem;
    font-weight: 400;
    color: var(--dark);
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    cursor: pointer;
}
.products-secondary__list ul li img {
    margin-right: 32px;
}

.products-secondary__title {
    color: #fff;
    font-size: 3.2rem;
    font-weight: bold;
    margin-bottom: 24px;
}

.products-secondary__subtitle {
    color: #fff;
    font-size: 2.4rem;
    font-weight: bold;
    margin-bottom: 24px;
} 

.products-secondary__description {
    font-size: 1.6rem;
    color: #B8B8B8;
    margin-bottom:40px;
  }

.products-secondary__tag {
    border: 1px solid var(--primary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 1.4rem;
    color: #FFF;
    margin-bottom: 24px;
    display: inline-block;
}

.box-products-secondary {
    display: flex;
    justify-content: space-between;
    
}

.products-secondary__panel ol {
    list-style: none;
    counter-reset: list-counter;
    padding-left: 0;
    margin-bottom: 40px;
  }

  .products-secondary__panel ol li {
    position: relative;
    counter-increment: list-counter;
    padding-left: 44px;
    font-size: 1.6rem;
    margin-bottom: 32px;

  }

  .products-secondary__panel ol li:before {
    content: counter(list-counter);
    display: inline-block;
    width: 32px;
    height: 32px;
    line-height: 32px;
    text-align: center;
    border-radius: 50%;
    background-color: #353B49;
    color: #BFC0C5;
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
  }

 



/* ============================================
   TABLET - 768px a 1024px
   ============================================ */
@media only screen and (max-width: 1024px) and (min-width: 768px) {
    
    /* Container geral */
    .container {
        padding: 0 32px;
        max-width: 100%;
    }

    /* Header e navegação */
    .header-main__box {
        max-width: 160px;
        height: 140px;
        padding-right: 60px;
    }

    .header-main__box::before {
        height: 140px;
    }

    .header-main__box img {
        width: 100px;
        height: 105px;
    }

    .sub-header {
        padding: 0 32px;
    }

    .navigation {
        gap: 8px;
    }

    .navigation a {
        padding: 10px 16px;
        font-size: 1.4rem;
    }

    /* Banner */
    .banner {
        height: 500px;
    }

    .banner-title {
        font-size: 4rem;
        margin-bottom: 20px;
    }

    .box-text {
        max-width: 600px;
        padding: 0 32px;
    }

    .box-text p {
        font-size: 1.8rem;
        line-height: 1.6;
    }

    /* Títulos de seção */
    .title-section {
        font-size: 3.2rem;
        margin-bottom: 32px;
    }

    /* Serviços */
    .services-list {
        gap: 24px;
        flex-wrap: wrap;
    }

    .service-item {
        padding: 24px;
        width: calc(50% - 12px);
        margin-bottom: 0;
    }

    .service-item:nth-child(odd) {
        margin-right: 0;
    }

    .service-item h3 {
        font-size: 2rem;
    }

    .service-item p {
        font-size: 1.5rem;
    }

    /* Sobre - Arquitetura */
    .about__container {
        flex-direction: column;
        gap: 40px;
        align-items: center;
    }

    .img-about {
        width: 100%;
        max-width: 500px;
        margin: 0 auto;
    }

    .about__text {
        margin-left: 0;
        text-align: left;
        max-width: 100%;
    }

    .about__text .title-section {
        font-size: 3.2rem;
    }

    .about__text p {
        font-size: 1.7rem;
        line-height: 1.7;
    }

    .about {
        background-image: none;
        background: var(--bg-dark);
    }

    .product-info-revert {
        flex-direction: column;
    }

    .product-info .about__container {
        gap: 40px;
    }

    /* Banner do meio */
    .banner-middle {
        height: 400px;
        margin-bottom: 60px;
    }

    /* Contato */
    .contact__container {
        flex-direction: column;
        gap: 40px;
    }

    .box-contact {
        flex-direction: row;
        gap: 40px;
        align-items: flex-start;
        flex-wrap: nowrap;
    }

    .box-contact__left {
        max-width: 50%;
        flex: 1;
        min-width: 300px;
    }

    .cover-contact {
        max-width: 50%;
        flex: 1;
        min-height: 400px;
    }

    .box-contact__text h2 {
        font-size: 3rem;
    }

    .contact-list li {
        font-size: 1.6rem;
    }

    /* Carousel */
    .owl-carousel .owl-item img {
        width: auto;
        max-height: 350px;
    }

    /* Footer */
    footer {
        padding: 32px 32px 24px;
    }

    footer p {
        font-size: 1.5rem;
    }
}

/* ============================================
   TABLET PEQUENO - Menu Burger
   ============================================ */
@media only screen and (max-width: 900px) {
    
    /* Ativar menu burger em tablets menores */
    #menu-burger {
        display: block;
        font-size: 32px;
        border: 0;
        color: var(--primary);
        background: transparent;
        cursor: pointer;
        z-index: 100;
    }

    .header {
        height: 100px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0 20px;
    }

    .sub-header {
        display: none;
    }

    .navigation {
        flex-direction: column;
        background: #ffffff;
        width: 100%;
        position: fixed;
        padding-top: 30px;
        top: 100px;
        left: 0;
        right: 0;
        z-index: 99;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        max-height: calc(100vh - 100px);
        overflow-y: auto;
        display: none;
    }

    .navigation.active {
        display: flex;
    }

    .navigation a {
        width: 100%;
        padding: 18px 24px;
        border-radius: 0;
        border-bottom: 1px solid #f0f0f0;
        color: #1a1a1a;
        font-weight: 500;
        font-size: 1.6rem;
        display: block;
        box-sizing: border-box;
        transition: all 0.3s ease;
    }

    .navigation a:hover {
        text-decoration: none;
        background: #f8f8f8;
        padding-left: 28px;
    }

    .navigation a.active {
        background: #f4f4f4;
        color: #6B55A1;
        border-left: 4px solid #6B55A1;
        font-weight: 600;
    }
}


/* ============================================
   MOBILE - até 767px
   ============================================ */
@media only screen and (max-width: 767px) {
    .box-contact {
        flex-wrap: wrap;
        flex-direction: column;
    }

    .box-contact__left {
        max-width: 100%;
    }

    .box-contact .cover-contact {
        max-width: 100%;
        width: 100%;  
        max-width: 500px;
        height: auto;
    }

    .product-info-revert {
        flex-direction: column-reverse;
    }
    
    .box-products-secondary {
        display: flex;
        justify-content: space-between;
        flex-direction: column;
        padding: 0;
        align-items: center;
    }
    
    .products-secondary__title {
        font-size: 2.4rem;
    }
    
    .box-contact__left {
        max-width: 500px;
    }
    
    .about {
        background-image: none;
    }

    /* Header mobile mantido da seção anterior */
    
    .banner-item {
        background-position: right top;
        background-size: cover;
    }
    
    .banner1 {
        background-image: url("../img/banner-min.jpg");   
    }
    
    .banner2 {
        background-image: url("../img/banner-vallium-2-mobile.png");   
    }

    .title-section {
        font-size: 2.8rem;
        padding: 0 8px;
        margin-left: 0;
        margin-right: 0;
    }

    .container {
        padding: 0 20px;
    }

    .service-item {
        padding: 16px;
        margin-bottom: 24px;
        width: 100%;
    }

    .service-item:nth-child(odd) {
        margin-right: 0;
    }

    .banner-middle {
        background-attachment: scroll;
        height: 300px;
    }
    
    .banner-title {
        font-size: 3rem;
    }
    
    .box-text p {
        font-size: 1.6rem;
    }
} 

.header {
    position: relative;
    z-index: 10;
}

.header-main__box {
    background: #fff;
    width: 100%;
    max-width: 190px;
    height: 100%;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    height: 165px;
    transform: skew(-35deg);
    box-sizing: border-box;
    padding-right: 70px;
    box-shadow: var(--shadow-md);
    z-index: 999;
    transition: height var(--transition-base);
}

.header-scrolled .header-main__box {
    height: 120px;
}

.header-main__box::before {
    content: " ";
    width: 90vw;
    height: 165px;
    background: #fff;
    transform: skew(178deg);
    position: absolute;
    top: 0;
    transition: height var(--transition-base);
}

.header-scrolled .header-main__box::before {
    height: 120px;
}

.header-main__box img {
    width: 114px;
    height: 120px;
    transform: skew(35deg);
    transition: all var(--transition-base);
}

.header-scrolled .header-main__box img {
    width: 90px;
    height: 95px;
}

.product-info {
    margin-bottom: 80px;
    padding: 24px 0;
}

.product-info img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-slow);
}

.product-info img:hover {
    transform: scale(1.02);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.product-info .about__text {
    margin-bottom: 40px;
}

.product-info .about__container {
    gap: 64px;
}



.banner-middle {
    background-position: center;
    background-size: cover;
    background-image: url("../img/banner-engenharia.jpg");  
    background-attachment: fixed;
    height: 500px;
    width: 100%;
    margin-bottom: 80px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

/* Fix para iOS */
@supports (-webkit-touch-callout: none) {
    .banner-middle {
        background-attachment: scroll;
    }
}

.banner-middle::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.1), rgba(0,0,0,0.3));
}