* {
    box-sizing: border-box;
    font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
}


html,
body {
    margin: 0;
    padding: 0;

    width: 100%;
    min-height: 100%;

    background-color: rgb(0, 0, 70);
}


body {
    overflow-x: hidden;
}


/* FUNDO */

#fundo {

    position: fixed;

    top: 0;
    left: 0;

    width: 100vw;
    height: 100vh;

    background-color: rgb(0, 0, 70);

    z-index: -10;
}


/* =========================================================
   CABEÇALHO
   ========================================================= */

#h_p1 {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin: 0;
    padding: 0.5% 2%;
    background-color: black;
    position: relative;
}


/* TÍTULO */

.kbca1 {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

#h_p1 div h1 {
    margin: 0;
    font-size: 25px;
    color: white;
}

/* =========================================================
   ÁREA DOS BOTÕES
   ========================================================= */

.kbca2 {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
}


/* =========================================================
   BANDEIRAS
   ========================================================= */
#lang_pt,
#lang_en {
    display: flex;
    flex-direction: row;
    align-items: center;
    padding-right: 20px;
    margin-top: 2.5%;
    margin-bottom: 2.5%;
    cursor: pointer;
    text-decoration: none;
}

#lang_pt img,
#lang_en img {
    width: 54px;
    height: 38px;
    margin-right: 8px;
    transition: 3s;
}

#lang_pt h5,
#lang_en h5 {
    margin: 0;
    font-size: 18px;
    font-weight: normal;
    color: white;
    transition: 3s;
}

/* HOVER */
#lang_pt:hover img,
#lang_en:hover img {
    opacity: 0.25;
    transition: 1s;
}

#lang_pt:hover h5,
#lang_en:hover h5 {
    color: rgba(180,180,255,1);
    transition: 1s;
}

/* =========================================================
   BOTÕES RGB / HOME
   ========================================================= */

#rgb_but,
#home_but {
    width: 38px;
    height: 38px;
    padding: 0;
    border: 0;
    background-color: transparent;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    cursor: pointer;
}

#rgb_but {
    background-image:
        url("../imgs/up_back_deact.png");
}

#home_but {
    background-image:
        url("../imgs/home_deact.png");
}

/* HOVER */
#rgb_but:hover {
    background-image:
        url("../imgs/up_back_hover.png");
}

#home_but:hover {
    background-image:
        url("../imgs/home_hover.png");
}

/* GALERIA */
#galeria {
    width: 92%;
    margin: 20px auto;
    perspective: 1000px;
}
#grid_objetos,
#grid_cenarios {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    perspective: 1000px;
}

/* CARDS */
.card_3d {
    position: relative;
    display: block;
    overflow: hidden;
    text-decoration: none;
    color: white;
    background-color: #111;
    border-radius: 6px;
    cursor: pointer;
    transform-style: preserve-3d;
    will-change: transform;
    transition:
        transform 0.2s ease-out,
        box-shadow 0.2s ease-out;
}


.card_3d img {
    display: block;
    width: 100%;
    height: auto;
}

/* TÍTULO SOBRE A IMAGEM */
.card_title {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 32px;
    font-weight: bold;
    text-align: center;
    opacity: 0;
    transition: opacity 0.25s ease;
    pointer-events: none;
    text-shadow:
        -2px -2px 0 #000,
         2px -2px 0 #000,
        -2px  2px 0 #000,
         2px  2px 0 #000;
}

.card_3d:hover .card_title {
    opacity: 0.75;
}

/* =========================================================
   SEÇÕES DO MOSAICO
   ========================================================= */
#galeria_objetos,
#galeria_cenarios {
    width: 100%;
    margin-top: 20px;
}

/* =========================================================
   TÍTULOS DAS SEÇÕES
   ========================================================= */
#titulo_objetos,
#titulo_cenarios {
    margin: 0 0 20px 0;
    text-align: left;
    font-size: 24px;
    font-weight: normal;
    color: white;
}

/* RESPONSIVO */
@media (max-width: 900px) {
    #grid_objetos,
    #grid_cenarios {
        grid-template-columns: repeat(2, 1fr);
    }
}


@media (max-width: 500px) {
    #grid_objetos,
    #grid_cenarios {
        grid-template-columns: 1fr;
    }
}