/* ========================================= */
/* Variáveis CSS                             */
/* ========================================= */

:root {
    --spacing-xxs: 2px;
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 30px;
    --spacing-xxl: 50px;

    --font-h1: 1.3rem;
    --font-h2: 1.2rem;
    --font-h3: 1.2rem;
    --font-h4: 1.2rem;
    --font-p: 1.2rem;

    --font-hero-heading: 3.5rem;
    --font-hero-paragraph: 1.3rem;

    --bg-color: #ffffff;
    --text-color: #212529;
    --link-color: #0d6efd;
    --link-hover-color: #0a58ca;
    --card-bg: #ffffff;
    --card-border: #dee2e6;
    --card-header-bg: rgba(210, 210, 210, 0.25);
    --audio-controls-bg: rgb(244, 244, 244);
    --animation-controls-bg: rgb(244, 244, 244);
    --transcription-border: #eee;
    --transcription-text-color: #212529;
    --model-viewer-bg: #ffffff;
    --control-group-bg: #fcfcfc;
    --control-group-border: #eee;
    --custom-color-input-border: #ccc;
    --custom-color-input-hover-border: #999;
    --material-name-color: #333;
    --custom-color-label-color: #495057;
    --text-icon-filter: 0;
    --placeholder-text-color: #888;
    --placeholder-bg-color: #f0f0f0;
    --card-bg-rgb: 255, 255, 255;
    --footer-bg-color: rgba(210, 210, 210, 0.25);
    --scroll-to-top-bg-color: #0d6efd;
    --scroll-to-top-bg-hover-color: #0a58ca;
}

.dark-mode {
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --link-color: #6ea8fe;
    --link-hover-color: #8bb9fe;
    --card-bg: #1a1a1a;
    --card-border: #444;
    --card-header-bg: rgba(70, 70, 70, 0.25);
    --audio-controls-bg: rgb(37, 37, 37);
    --animation-controls-bg: rgba(37, 37, 37);
    --transcription-border: #555;
    --transcription-text-color: #e0e0e0;
    --model-viewer-bg: #1a1a1a;
    --control-group-bg: #1a1a1a;
    --control-group-border: #555;
    --custom-color-input-border: #777;
    --custom-color-input-hover-border: #aaa;
    --material-name-color: #f0f0f0;
    --custom-color-label-color: #c0c0c0;
    --text-icon-filter: 1;
    --placeholder-text-color: #a0a0a0;
    --placeholder-bg-color: #333333;
    --card-bg-rgb: 26, 26, 26;
    --footer-bg-color: rgba(70, 70, 70, 0.25);
    --scroll-to-top-bg-color: #0d6efd;
    --scroll-to-top-bg-hover-color: #0a58ca;
}

/* ========================================= */
/* Base (HTML, Body, Geral)                  */
/* ========================================= */

html.dark-mode body,
html.dark-mode .site-header,
html.dark-mode .card,
html.dark-mode model-viewer,
html.dark-mode .audio-controls-bg,
html.dark-mode .animation-controls-bg {
    transition: none !important;
}

.theme-enabled body,
.theme-enabled .site-header,
.theme-enabled .card,
.theme-enabled model-viewer,
.theme-enabled .audio-controls-bg,
.theme-enabled .animation-controls-bg {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

html {
    font-size: 10px;
    scrollbar-width: thin;
    scrollbar-color: #888 var(--placeholder-bg-color);
}

.dark-mode html {
    scrollbar-color: #bbb var(--placeholder-bg-color);
}

body {
    font-family: 'Lexend', sans-serif !important;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 100vh;
    margin: 0;
    padding: var(--spacing-lg);
    background-color: var(--bg-color);
    color: var(--text-color);
    gap: var(--spacing-xs);
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s;
    -webkit-text-size-adjust: 100%;
}

h1 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

/* ========================================= */
/* Cabeçalho                                 */
/* ========================================= */

.site-header {
    width: 100%;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-color);
    box-sizing: border-box;
    transition: background-color 0.3s, border-color 0.3s;
    margin-bottom: 0;
}

.header-top-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding-bottom: var(--spacing-sm);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.header-bottom-row {
    width: 100%;
    margin-bottom: var(--spacing-lg);
}

.logo-container {
    height: 50px;
    display: flex;
    align-items: center;
    min-width: 0;
}

.logo-container .logo-image {
    height: 100%;
    width: auto;
    object-fit: contain;
}

.logo-container .logo-dark {
    display: none;
}

html.dark-mode .logo-container .logo-light {
    display: none;
}

html.dark-mode .logo-container .logo-dark {
    display: block;
}

.error-404-container {
    padding-top: 20px;
    height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.error-404-container .error-404-image {
    height: 100%;
    width: auto;
    max-width: 100%;
    object-fit: contain;
}

.error-404-container .error-404-dark {
    display: none;
}

@media (max-width: 768px) {
    .error-404-container {
        height: 180px;
        /* Reduz a altura do contêiner para telas médias */
        padding-top: 15px;
    }

    .error-404-container .error-404-image {
        /* A imagem ainda ocupa 100% da altura do novo contêiner */
        /* E a largura se ajusta, com um limite de 90% para não ficar muito grande */
        max-width: 90%;
    }
}

/* Media Query para telas pequenas (ex: celulares, até 480px) */
@media (max-width: 480px) {
    .error-404-container {
        height: 150px;
        /* Reduz ainda mais a altura do contêiner para telas pequenas */
        padding-top: 10px;
    }

    .error-404-container .error-404-image {
        /* A imagem ainda ocupa 100% da altura do novo contêiner */
        /* E a largura se ajusta, com um limite de 100% */
        max-width: 100%;
    }
}

html.dark-mode .error-404-container .error-404-light {
    display: none;
}

html.dark-mode .error-404-container .error-404-dark {
    display: block;
}

.error-404-content {
    padding-top: 20px;
    padding-left: 20px;
    padding-right: 20px;
    padding-bottom: 80px;
    position: relative;
    text-align: center;
    color: var(--text-color);
    z-index: 10;
}

.error-404-heading {
    font-size: var(--font-hero-heading);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.error-404-paragraph01,
.error-404-paragraph02 {
    font-size: var(--font-hero-paragraph);
    margin: 5px 0;
}

.theme-switch-wrapper {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    width: auto;
    max-width: 100%;
    gap: var(--spacing-sm);
    color: var(--text-color);
    flex-wrap: wrap;
    min-width: 0;
}

.theme-switch {
    display: inline-block;
    width: 35px;
    height: 15px;
    position: relative;
    flex-shrink: 0;
}

.theme-switch input {
    display: none;
}

.slider {
    background-color: #ccc;
    bottom: 0;
    cursor: pointer;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    background-color: #fff;
    bottom: 2.9px;
    content: "";
    width: 9px;
    height: 9px;
    left: 3px;
    position: absolute;
    transition: .4s;
    border-radius: 50%;
}

input:checked+.slider {
    background-color: #0d6efd;
}

input:checked+.slider:before {
    transform: translateX(19px);
}

.theme-switch-label {
    font-size: var(--font-p);
    font-weight: 400;
    color: var(--text-color);
    white-space: normal;
}

.header-right-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    min-width: 0;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

.hamburger-menu {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    z-index: 30;
    flex-shrink: 0;
}

.hamburger-icon {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    position: relative;
    transition: background-color 0.3s;
}

.hamburger-icon::before,
.hamburger-icon::after {
    content: '';
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    position: absolute;
    transition: transform 0.3s ease, top 0.3s ease;
}

.hamburger-icon::before {
    top: -8px;
}

.hamburger-icon::after {
    top: 8px;
}

.hamburger-menu.is-active .hamburger-icon {
    background-color: transparent;
}

.hamburger-menu.is-active .hamburger-icon::before {
    transform: rotate(45deg);
    top: 0;
}

.hamburger-menu.is-active .hamburger-icon::after {
    transform: rotate(-45deg);
    top: 0;
}

.main-nav {
    display: flex;
    justify-content: center;
    width: 100%;
}

.main-nav .nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
}

.main-nav .nav-item {
    position: relative;
    flex-shrink: 1;
    min-width: fit-content;
}

.main-nav .nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-size: var(--font-h3);
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-sm);
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    white-space: normal;
    text-align: center;
}

.main-nav .nav-link:hover {
    color: var(--link-hover-color);
}

.main-nav .dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 5px;
    list-style: none;
    padding: var(--spacing-xs) 0;
    margin: 0;
    min-width: 200px;
    z-index: 20;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s, border-color 0.3s;
}

.nav-item.dropdown .dropdown-menu.is-open-mobile {
    display: block;
    /* Ou seu método de exibir no mobile */
    /* Garanta que overrides de desktop não impeçam a exibição aqui */
}

@media (min-width: 1025px) {

    /* Use o seu breakpoint exato, que parece ser 1024px */
    .nav-item.dropdown:hover .dropdown-menu {
        display: block;
        /* Ativa o hover no desktop */
    }

    /* Se você tiver o comportamento de clique no desktop, também pode manter */
    .nav-item.dropdown.is-open-desktop .dropdown-menu {
        display: block;
        /* Para quando aberto via clique no desktop */
    }

    /* Restaura a seta rotacionada para o hover no desktop, se aplicável */
    .nav-item.dropdown:hover .dropdown-arrow {
        transform: rotate(180deg);
    }
}

.dark-mode .main-nav .dropdown-menu {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.main-nav .nav-item.dropdown:hover .dropdown-menu,
.main-nav .nav-item.dropdown:focus-within .dropdown-menu {
    display: block;
}

.main-nav .dropdown-item {
    display: block;
    padding: var(--spacing-xs) var(--spacing-md);
    text-decoration: none;
    color: var(--text-color);
    font-size: var(--font-h1);
    white-space: nowrap;
    transition: background-color 0.2s, color 0.2s;
}

.main-nav .dropdown-item:hover {
    background-color: var(--card-header-bg);
    color: var(--link-hover-color);
}

.dropdown-arrow {
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid var(--text-color);
    pointer-events: none;
    transition: transform 0.3s ease, border-color 0.3s;
}

.main-nav .nav-item.dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

/* ========================================= */
/* Seção Hero                                */
/* ========================================= */

.hero-content {
    padding: 20px;
    position: relative;
    text-align: center;
    color: #fff;
    z-index: 10;
}

.hero-heading {
    font-size: var(--font-hero-heading);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.hero-paragraph01,
.hero-paragraph02 {
    font-size: var(--font-hero-paragraph);
    margin: 5px 0;
}

.open-about-button {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: center;
    font-family: 'Lexend', sans-serif;
    font-weight: normal;
    color: #000;
    font-size: var(--font-p);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    background-color: #fff;
    margin-bottom: var(--spacing-sm);
}

.open-about-button:hover {
    background-color: #dddddd;
}

.switch-container {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 15;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.switch-label {
    font-size: var(--font-p);
    font-weight: 400;
    color: #fff;
}

input[type="checkbox"] {
    display: none;
}

input[type="checkbox"]+label {
    display: flex;
    align-items: center;
    width: 35px;
    height: 15px;
    background-color: #ccc;
    border-radius: 20px;
    position: relative;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

input[type="checkbox"]:checked+label {
    background-color: #0d6efd;
}

input[type="checkbox"]+label:before {
    content: "";
    position: absolute;
    width: 9px;
    height: 9px;
    background-color: #fff;
    border-radius: 50%;
    left: 4px;
    top: 3px;
    transition: transform 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

input[type="checkbox"]:checked+label:before {
    transform: translateX(18px);
}

/* ========================================= */
/* Fundo Gradiente Animado                   */
/* ========================================= */

:root {
    --color-bg1: rgb(108, 0, 162);
    --color-bg2: rgb(0, 17, 82);
    --color1: 18, 113, 255;
    --color2: 221, 74, 255;
    --color3: 100, 220, 255;
    --color4: 200, 50, 50;
    --color5: 180, 180, 50;
    --color-interactive: 140, 100, 255;
    --circle-size: 80%;
    --blending: hard-light;
}

.gradient-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 300px;
    overflow: hidden;
    background: linear-gradient(40deg, var(--color-bg1), var(--color-bg2));
}

.gradient-bg.no-animation .gradients-container>div {
    visibility: hidden;
}

.gradient-bg .gradients-container {
    filter: url(#goo) blur(80px);
    width: 100%;
    height: 100%;
}

.gradient-bg .g1 {
    position: absolute;
    background: radial-gradient(circle at center, rgba(var(--color1), 0.8) 0, rgba(var(--color1), 0) 50%) no-repeat;
    mix-blend-mode: var(--blending);
    width: var(--circle-size);
    height: var(--circle-size);
    top: calc(50% - var(--circle-size) / 2);
    left: calc(50% - var(--circle-size) / 2);
    transform-origin: center center;
    animation: moveVertical 30s ease infinite;
    opacity: 1;
}

.gradient-bg .g2 {
    position: absolute;
    background: radial-gradient(circle at center, rgba(var(--color2), 0.8) 0, rgba(var(--color2), 0) 50%) no-repeat;
    mix-blend-mode: var(--blending);
    width: var(--circle-size);
    height: var(--circle-size);
    top: calc(50% - var(--circle-size) / 2);
    left: calc(50% - var(--circle-size) / 2);
    transform-origin: calc(50% - 400px);
    animation: moveInCircle 20s reverse infinite;
    opacity: 1;
}

.gradient-bg .g3 {
    position: absolute;
    background: radial-gradient(circle at center, rgba(var(--color3), 0.8) 0, rgba(var(--color3), 0) 50%) no-repeat;
    mix-blend-mode: var(--blending);
    width: var(--circle-size);
    height: var(--circle-size);
    top: calc(50% - var(--circle-size) / 2 + 200px);
    left: calc(50% - var(--circle-size) / 2 - 500px);
    transform-origin: calc(50% + 400px);
    animation: moveInCircle 40s linear infinite;
    opacity: 1;
}

.gradient-bg .g4 {
    position: absolute;
    background: radial-gradient(circle at center, rgba(var(--color4), 0.8) 0, rgba(var(--color4), 0) 50%) no-repeat;
    mix-blend-mode: var(--blending);
    width: var(--circle-size);
    height: var(--circle-size);
    top: calc(50% - var(--circle-size) / 2);
    left: calc(50% - var(--circle-size) / 2);
    transform-origin: calc(50% - 200px);
    animation: moveHorizontal 40s ease infinite;
    opacity: 0.7;
}

.gradient-bg .g5 {
    position: absolute;
    background: radial-gradient(circle at center, rgba(var(--color5), 0.8) 0, rgba(var(--color5), 0) 50%) no-repeat;
    mix-blend-mode: var(--blending);
    width: calc(var(--circle-size) * 2);
    height: calc(var(--circle-size) * 2);
    top: calc(50% - var(--circle-size));
    left: calc(50% - var(--circle-size));
    transform-origin: calc(50% - 800px) calc(50% + 200px);
    animation: moveInCircle 20s ease infinite;
    opacity: 1;
}

.gradient-bg .interactive {
    position: absolute;
    background: radial-gradient(circle at center, rgba(var(--color-interactive), 0.8) 0, rgba(var(--color-interactive), 0) 50%) no-repeat;
    mix-blend-mode: var(--blending);
    width: 100%;
    height: 100%;
    top: -50%;
    left: -50%;
    opacity: 0.7;
}

/* ========================================= */
/* Animações da Seção Hero                   */
/* ========================================= */

@keyframes moveInCircle {
    0% {
        transform: rotate(0);
    }

    50% {
        transform: rotate(180deg);
    }

    to {
        transform: rotate(360deg);
    }
}

@keyframes moveVertical {
    0% {
        transform: translateY(-50%);
    }

    50% {
        transform: translateY(50%);
    }

    to {
        transform: translateY(-50%);
    }
}

@keyframes moveHorizontal {
    0% {
        transform: translate(-50%) translateY(-10%);
    }

    50% {
        transform: translate(50%) translateY(10%);
    }

    to {
        transform: translate(-50%) translateY(-10%);
    }
}

/* ========================================= */
/* Seção de Features                         */
/* ========================================= */

.features-section {
    width: 100%;
    max-width: 1200px;
    padding: var(--spacing-lg);
    margin: var(--spacing-xxl) auto;
    box-sizing: border-box;
    text-align: center;
}

.section-header {
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: var(--font-hero-heading);
    font-weight: 600;
    color: var(--link-color);
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: var(--font-hero-paragraph);
    color: var(--text-color);
    font-weight: 600;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    justify-content: center;
    align-items: stretch;
}

.card-container {
    padding-bottom: var(--spacing-xl);
    width: 100%
}

.card {
    border: 1px solid var(--card-border);
    border-radius: 8px;
    background-color: var(--card-bg);
    overflow: hidden;
    transition: background-color 0.3s, border-color 0.3s;
    width: 100%;
    box-sizing: border-box;
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding-left: var(--spacing-sm);
    background-color: var(--card-header-bg);
    border-bottom: 1px solid var(--card-border);
}

.card-header-title {
    font-size: var(--font-h2);
    font-weight: 600;
    color: var(--text-color);
}

.card-body {
    padding: var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    text-align: left;
}

.card-body p {
    font-size: var(--font-p);
    font-weight: 400;
    line-height: 1.6;
}

.card-body li {
    font-size: var(--font-p);
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
}

.card-body hr {
    border: none;
    border-top: 1px solid var(--card-border);
    margin: var(--spacing-xxs);
}

.card-header img.icon-3d,
.card-header img.icon-explanation,
.card-header img.icon-audiodescription,
.card-header img.icon-transcription,
.card-header img.icon-vr,
.card-header img.icon-ar,
.card-header img.icon-color-changing,
.card-header img.icon-keyboard,
.card-header img.icon-screen-reader,
.card-header img.icon-display,
.card-header img.icon-browser,
.card-header img.icon-version-history {
    width: 25px;
    height: 25px;
    object-fit: contain;
}

.inline-link {
    color: var(--link-color);
    text-decoration: underline;
    transition: color 0.3s ease;
}

.inline-link:hover {
    color: var(--link-hover-color);
}

/* ========================================= */
/* Seção de Ferramentas                      */
/* ========================================= */
.tools-section {
    padding: var(--spacing-xl) 0;
    text-align: center;
    width: 100%;
}

.tools-section .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.tool-card {
    border: 1px solid var(--card-border);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    text-align: left;
    height: 100%;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.tool-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
    margin-bottom: var(--spacing-sm);
}

.tool-card .card-body {
    padding: var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.tool-card-title {
    font-size: var(--font-h1);
    font-weight: 600;
    margin-top: 0;
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
}

.tool-card-description {
    font-size: var(--font-p);
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
    flex-grow: 1;
}

.tool-card-button {
    margin-top: auto;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: 5px;
    background-color: #0d6efd;
    color: #ffffff;
    font-size: var(--font-p);
    font-family: 'Lexend', sans-serif;
    cursor: pointer;
    width: 100%;
    transition: background-color 0.3s;
}

.tool-card-button:hover {
    background-color: #0B5ED7;
}

.button-link {
    text-decoration: none;
    display: block;
}

.gamification-section {
    padding: var(--spacing-xl) 0;
    text-align: center;
    width: 100%;
}

.gamification-section .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ================================================ */
/* Layout Panzera Accessible 3D Web Viewer          */
/* ================================================ */

.top-section-container {
    width: 100%;
    margin-bottom: var(--spacing-md);
}

.vrar-content-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    width: 100%;
    align-items: stretch;
}

.left-sidebar,
.right-sidebar {
    flex: 1 1 280px;
    min-width: 250px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.center-content {
    flex: 2 1 400px;
    min-width: 300px;
    display: flex;
    flex-direction: column;
}

/* ========================================= */
/* Model Viewer                              */
/* ========================================= */

.model-selector-container {
    width: 100%;
    margin-bottom: var(--spacing-sm);
}

#model-selector {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-right: 40px;
    font-family: 'Lexend', sans-serif;
    font-style: italic;
    font-size: var(--font-h3);
    color: var(--placeholder-text-color);
    background-color: var(--placeholder-bg-color);
    border: 1px solid var(--card-border);
    border-radius: 5px;
    cursor: pointer;
    outline: none;
    transition: all 0.3s ease;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

#model-selector:valid {
    font-style: normal;
    color: var(--text-color);
    background-color: var(--card-bg);
}

#model-selector option[value=""] {
    color: var(--placeholder-text-color);
    background-color: var(--placeholder-bg-color);
}

#model-selector option {
    padding: var(--spacing-sm);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: var(--font-h3);
}

#model-selector:hover {
    border-color: #0d6efd;
}

#model-selector:active,
#model-selector:focus {
    border-color: #0B5ED7;
}

.description-label {
    display: block;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    line-height: 1.6;
    color: var(--text-color);
    font-size: var(--font-h2);
}

.select-container {
    position: relative;
    width: 100%;
}

.select-container .dropdown-arrow {
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
}

.select-container select {
    padding-right: 30px;
}

audio {
    margin: 10px 0;
    background-color: transparent;
    border: none;
    width: 100%;
    max-width: 400px;
}

.custom-audio-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-xs);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    border-radius: 8px;
    background-color: var(--audio-controls-bg);
    transition: background-color 0.3s;
    box-sizing: border-box;
}

.audio-control-button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: background-color 0.2s ease-in-out;
    flex-shrink: 0;
}

.audio-control-button:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

.dark-mode .audio-control-button:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.audio-control-button img {
    width: 24px;
    height: 24px;
    filter: invert(var(--text-icon-filter));
}

.progress-bar-container {
    max-width: 20%;
    margin-left: 10px;
    display: flex;
    align-items: center;
    flex-grow: 1;
}

#progress-bar {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: #e0e0e0;
    border-radius: 3px;
    cursor: pointer;
    outline: none;
    transition: background 0.2s;
}

.dark-mode #progress-bar {
    background: #555;
}

#progress-bar::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #0d6efd;
    cursor: pointer;
}

#progress-bar::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #0d6efd;
    cursor: pointer;
}

.time-display {
    font-size: var(--font-h3);
    color: var(--text-color);
    white-space: nowrap;
    min-width: 70px;
    text-align: center;
    flex-shrink: 0;
}

.volume-control-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    width: 100px;
    flex-shrink: 1;
}

#volume-bar {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: #e0e0e0;
    border-radius: 3px;
    cursor: pointer;
    outline: none;
}

.dark-mode #volume-bar {
    background: #555;
}

#volume-bar::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #0d6efd;
    cursor: pointer;
}

#volume-bar::-moz-range-thumb {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #0d6efd;
    cursor: pointer;
}

.playback-speed-control {

    flex-shrink: 0;
    position: relative;
}

.playback-speed-control select {
    font-family: 'Lexend', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--card-border);
    border-radius: 5px;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-h3);
    cursor: pointer;
    outline: none;
    transition: background-color 0.3s, border-color 0.3s, color 0.3s;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 80px;
    padding-right: 30px;
}

.playback-speed-control select:hover {
    border-color: #0d6efd;
}

.playback-speed-control select option {
    background-color: var(--bg-color);
    color: var(--text-color);
}

.dark-mode .playback-speed-control select {
    background-color: var(--bg-color);
    color: var(--text-color);
}

.playback-speed-control .dropdown-arrow {
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
}

/* ============================================================ */
/* Conteúdo Secundário (Texto Explicativo, Transcrição, Botões) */
/* ============================================================ */

#explanation-text h1 {
    font-size: var(--font-h1);
    text-decoration: underline;
    color: var(--text-color);
}

#explanation-text h2 {
    font-size: var(--font-h2);
    color: var(--text-color);
    margin-top: var(--spacing-xl);
}

#explanation-text h3 {
    font-size: var(--font-h3);
    font-weight: bold;
    color: var(--text-color);
    margin-top: var(--spacing-xxl);
    margin-bottom: var(--spacing-xs);
}

#explanation-text p {
    font-size: var(--font-p);
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
}

#explanation-text strong {
    font-weight: 400;
    color: var(--text-color);
}

#explanation-text hr {
    border: none;
    border-top: 1px solid var(--card-border);
    margin: var(--spacing-md) 0;
}

#explanation-text ul {
    list-style-type: disc;
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
}

#explanation-text ol {
    list-style-type: decimal;
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
}

#explanation-text li {
    font-size: var(--font-p);
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
}

#button_transcription,
#toggle-color-panel-button,
#toggle-explanation-button,
.reset-button {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px;
    border-radius: 5px;
    background-color: #0d6efd;
    color: #ffffff;
    font-size: var(--font-p);
    font-family: 'Lexend', sans-serif;
    cursor: pointer;
    margin-bottom: var(--spacing-sm);
    display: block;
    width: auto;
    transition: background-color 0.3s, color 0.3s;
}

#button_transcription:hover,
#toggle-color-panel-button:hover,
#toggle-explanation-button:hover {
    color: #ffffff;
    background-color: #0B5ED7;
}

#explanation-text {
    padding: var(--spacing-xs);
    color: var(--transcription-text-color);
    display: none;
    transition: border-color 0.3s, color 0.3s;
}

#transcription-text {
    padding: var(--spacing-xs);
    line-height: 1.6;
    font-size: var(--font-p);
    font-weight: 400;
    font-style: italic;
    display: none;
    transition: border-color 0.3s, color 0.3s;
}

#transcription-text p:last-child,
#explanation-text p:last-child {
    margin-bottom: 0;
}

.transcription-panel-expanded,
.explanation-panel-expanded {
    display: block !important;
}

/* ================================================== */
/* Controles do Modelo 3D (Loading, Animation, Color) */
/* ================================================== */

model-viewer {
    width: 100%;
    height: 500px;
    background-color: var(--model-viewer-bg);
    border-radius: 8px;
    transition: background-color 0.3s, border-color 0.3s;
    position: relative;
}

.model-loading-message {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10;
    border-radius: 8px;
    box-sizing: border-box;
}

.dark-mode .model-loading-message {
    background-color: rgba(0, 0, 0, 0.9);
    color: var(--text-color);
}

.model-loading-message p {
    font-size: var(--font-h1);
    color: var(--text-color);
    margin-top: 10px;
    margin-bottom: 0;
}

.model-loading-message img {
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    filter: invert(var(--text-icon-filter));
}

.model-animation-controls {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 11;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background-color: var(--animation-controls-bg);
    border-radius: 8px;
}

.dark-mode .model-animation-controls {
    background-color: var(--animation-controls-bg);
}

.model-animation-controls-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
}

.animation-title {
    color: var(--text-color);
    font-size: var(--font-h3);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    white-space: nowrap;
}

.playback-speed-control-3d {
    position: relative;
}

.playback-speed-control-3d select {
    font-family: 'Lexend', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--card-border);
    border-radius: 5px;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-h3);
    cursor: pointer;
    outline: none;
    transition: background-color 0.3s, border-color 0.3s, color 0.3s;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 80px;
    padding-right: 30px;
}

.playback-speed-control-3d select:hover {
    border-color: #0d6efd;
}

.dark-mode .playback-speed-control-3d select {
    background-color: var(--bg-color);
    color: var(--text-color);
    border-color: var(--card-border)
}

.playback-speed-control-3d .dropdown-arrow {
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
}

.model-animation-controls .icon-play-pause-3d {
    width: 24px;
    height: 24px;
    filter: invert(var(--text-icon-filter));
}

.color-buttons-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
}

.reset-button {
    background-color: #dc3545;
    color: #ffffff;
    font-family: 'Lexend', sans-serif;
    border: none;
}

.reset-button:hover {
    background-color: #c82333;
}

.global-color-control {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border: 1px solid var(--card-border);
    border-radius: 5px;
    background-color: var(--card-bg);
    transition: background-color 0.3s, border-color 0.3s;
}

.global-color-control .global-title-label {
    font-size: var(--font-h2);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--material-name-color);
}

.global-color-control .color-palette {
    margin-bottom: var(--spacing-sm);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xxs);
}

.global-color-control .custom-color-input-wrapper {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
}

.custom-color-label {
    font-weight: 400;
    color: var(--custom-color-label-color);
    font-size: var(--font-p);
    margin-right: var(--spacing-xs);
    flex-shrink: 0;
}

.global-color-control input[type="color"] {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background-color: transparent;
    border: 1px solid var(--custom-color-input-border);
    border-radius: 4px;
    cursor: pointer;
    padding: 0;
    box-sizing: border-box;
    transition: border 0.1s ease;
    flex-shrink: 0;
}

.global-color-control input[type="color"]::-moz-color-swatch {
    border: none;
    border-radius: 4px;
}

.global-color-control input[type="color"]:hover {
    border: 1px solid var(--custom-color-input-hover-border);
}

.global-color-control input[type="color"].selected {
    border: 2px solid #2185d0;
}

.individual-colors-section {
    border: 1px solid var(--card-border);
    border-radius: 5px;
    padding: var(--spacing-sm);
    background-color: var(--control-group-bg);
    transition: background-color 0.3s, border-color 0.3s;
    padding-bottom: var(--spacing-sm);
}

.individual-colors-section h2 {
    font-size: var(--font-h2);
    font-weight: 600;
    color: var(--text-color);
    margin-top: 0;
    margin-bottom: var(--spacing-xs);
}

.controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    box-sizing: border-box;
    padding: 0;
}

.control-group {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--control-group-border);
    border-radius: 5px;
    background-color: var(--control-group-bg);
    flex: 1 1 auto;
    min-width: unset;
    max-width: unset;
    box-sizing: border-box;
    transition: background-color 0.3s, border-color 0.3s;
}

.material-name {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--material-name-color);
    font-size: var(--font-p);
}

.color-palette {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xxs);
}

.color-square {
    width: 16px;
    height: 16px;
    border: 1px solid var(--custom-color-input-border);
    cursor: pointer;
    transition: border 0.1s ease;
    box-sizing: border-box;
    border-radius: 4px;
}

.color-square:hover {
    border: 1px solid var(--custom-color-input-hover-border);
}

.color-square.selected {
    border: 2px solid #2185d0;
}

.custom-color-control {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.custom-color-control input[type="color"] {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background-color: transparent;
    border: 1px solid var(--custom-color-input-border);
    border-radius: 4px;
    cursor: pointer;
    padding: 0;
    box-sizing: border-box;
    transition: border 0.1s ease;
    flex-shrink: 0;
}

.custom-color-control input[type="color"]:hover {
    border: 1px solid var(--custom-color-input-hover-border);
}

.custom-color-control input[type="color"].selected {
    border: 2px solid #2185d0;
}

.color-options-panel {
    display: none;
    flex-direction: column;
    gap: var(--spacing-md);
    padding-top: var(--spacing-sm);
    width: 100%;
    box-sizing: border-box;
}

.color-options-panel.expanded {
    display: flex;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* ========================================= */
/* Rodapé                                    */
/* ========================================= */

.site-footer {
    background-color: var(--footer-bg-color);
    padding: var(--spacing-xl) 0;
    width: 100%;
    box-sizing: border-box;
    transition: background-color 0.3s;
    border-radius: 8px;
    text-align: left;
    font-size: var(--font-p);
    font-weight: 400;
    color: var(--text-color);
}

.a {
    color: var(--link-color);
}

.a:hover {
    color: var(--link-hover-color);
}

.dark-mode a {
    color: var(--link-color);
}

.site-footer p {
    margin: 0;
    font-weight: 400;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.footer-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.footer-row:last-child {
    margin-bottom: 0;
}

.footer-column {
    flex: 1;
    min-width: 200px;
    padding: var(--spacing-xlm);
}

.footer-logo-container {
    height: 50px;
    display: flex;
    align-items: center;
    min-width: 0;
}

.footer-logo {
    height: 100%;
    width: auto;
    object-fit: contain;
}

.footer-logo.logo-dark {
    display: none;
}

.dark-mode .footer-logo.logo-light {
    display: none;
}

.dark-mode .footer-logo.logo-dark {
    display: block;
}

.footer-title {
    font-size: var(--font-h3);
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: var(--spacing-sm);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--link-color);
    font-size: var(--font-p);
    font-weight: 400;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--link-hover-color);
    text-decoration: underline;
}

.footer-partners {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    align-items: left;
    justify-content: left;
}

.copyright-title {
    font-size: var(--font-h1);
    font-weight: 600;
}

.partner-logo {
    height: 20px;
    width: auto;
    object-fit: contain;
    transition: opacity 0.3s;
}

.partner-logo.logo-dark {
    display: none;
}

.dark-mode .partner-logo.logo-light {
    display: none;
}

.dark-mode .partner-logo.logo-dark {
    display: block;
}

.copyright-info {
    font-size: var(--font-h3);
    font-weight: 600;
    color: var(--text-color);
    line-height: 1.6;
    margin-top: var(--spacing-xl);
}

.copyright-info h4 {
    font-size: var(--font-h4);
    font-weight: 00;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
}

.copyright-info p {
    margin-bottom: var(--spacing-xs);
    font-weight: 400;
}

.footer-row:last-child {
    margin-top: var(--spacing-xl);
    border-top: 1px solid var(--card-border);
    padding-top: var(--spacing-lg);
}

.footer-row:last-child .footer-column {
    flex: 1 0 100%;
}

.spinner-wrapper {
    overflow-x: hidden;
    overflow-y: hidden;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.0);
    backdrop-filter: saturate(100%) blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    justify-content: center;
    transition: all 10s;
}

.spinner-transparent {
    position: fixed;
    left: 50vw;
    top: 50vh;
    transform: translate(-50%, -50%);
    width: 35px;
    height: 35px;
    max-width: 50vw;
    max-height: 50vh;
}

/* ========================================= */
/* Scrollbar Personalizado                   */
/* ========================================= */

::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--placeholder-bg-color);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 10px;
    border: 3px solid var(--placeholder-bg-color);
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

::-webkit-scrollbar-corner {
    background: var(--placeholder-bg-color);
}

.dark-mode ::-webkit-scrollbar-track {
    background: var(--placeholder-bg-color);
}

.dark-mode ::-webkit-scrollbar-thumb {
    background: #bbb;
    border: 3px solid var(--placeholder-bg-color);
}

.dark-mode ::-webkit-scrollbar-thumb:hover {
    background: #eee;
}

.dark-mode ::-webkit-scrollbar-corner {
    background: var(--placeholder-bg-color);
}

/* ========================================= */
/* Media Queries                             */
/* ========================================= */

/* Desktop Specific Styles (min-width: 1024px) */
@media (min-width: 1024px) {
    .hero-section-desktop {
        display: flex;
        position: relative;
        width: 100%;
        height: auto;
        min-height: 300px;
        overflow: hidden;
        align-content: center;
        justify-content: center;
        align-items: center;
        border-radius: 8px;
    }

    .hero-section-mobile {
        display: none;
    }
}

/* Tablets and smaller desktops (max-width: 1024px) */
@media (max-width: 1024px) {
    body {
        padding: var(--spacing-sm);
    }

    .vrar-content-wrapper {
        flex-direction: column;
        align-items: center;
        width: 100%;
    }

    .left-sidebar,
    .right-sidebar,
    .center-content {
        flex: 1 1 100%;
        max-width: 100%;
        min-width: unset;
        width: 100%;
    }

    model-viewer {
        height: 400px;
        min-height: unset;
    }

    .card-body {
        padding: var(--spacing-sm);
    }

    .header-top-row {
        padding-bottom: var(--spacing-xs);
        gap: var(--spacing-xs);
    }

    .header-bottom-row {
        padding-top: var(--spacing-xs);
    }

    .main-nav {
        flex-basis: 100%;
        order: unset;
        display: none;
        flex-direction: column;
        width: 100%;
        background-color: var(--card-bg);
        position: static;
        top: auto;
        left: auto;
        z-index: 10;
        box-shadow: none;
    }

    .main-nav.is-open {
        display: flex;
    }

    .main-nav .nav-list {
        flex-direction: column;
        width: 100%;
        padding: 0;
        flex-wrap: nowrap;
        align-items: flex-start;
    }

    .main-nav .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--card-border);
    }

    .main-nav .nav-item:last-child {
        border-bottom: none;
    }

    .main-nav .nav-link {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-h3);
        justify-content: space-between;
        white-space: normal;
        text-align: left;
    }

    .main-nav .dropdown-menu {
        position: static;
        width: auto;
        max-width: calc(100% - (var(--spacing-lg) * 2));
        border: none;
        box-shadow: none;
        padding: var(--spacing-xs) 0;
        background-color: var(--card-header-bg);
        margin-left: var(--spacing-lg);
        margin-right: var(--spacing-lg);
    }

    .main-nav .dropdown-item {
        padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-sm) calc(var(--spacing-lg) + var(--spacing-md));
    }

    .main-nav .dropdown-menu.is-open-mobile {
        display: block;
    }

    .hamburger-menu {
        display: block;
    }

    .header-right-section {
        order: unset;
        margin-left: unset;
        align-items: flex-start;
        justify-content: flex-end;
        gap: var(--spacing-xs);
    }

    .theme-switch-wrapper {
        margin-left: 0;
    }

    .hero-section-desktop {
        display: none;
    }

    .hero-section-mobile {
        display: flex;
        position: relative;
        width: 100%;
        height: auto;
        min-height: 300px;
        overflow: hidden;
        align-content: center;
        justify-content: center;
        align-items: center;
        background-color: #0d6efd;
        border-radius: 8px;
    }

    :root {
        --font-hero-heading: 3.0rem;
    }

    .hero-heading {
        font-size: var(--font-hero-heading);
    }

    .section-title {
        font-size: var(--font-hero-heading);
    }

    .features-section {
        padding: var(--spacing-md);
    }

    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: var(--spacing-md);
    }
}

/* Media Queries for iPad Air 5th Generation (max-width: 1180px) */
@media (max-width: 1180px) {
    .hero-section-desktop {
        display: none;
    }

    .hero-section-mobile {
        display: flex;
        position: relative;
        width: 100%;
        height: auto;
        min-height: 300px;
        overflow: hidden;
        align-content: center;
        justify-content: center;
        align-items: center;
        background-color: #0d6efd;
        border-radius: 8px;
    }
}

/* Mobile Devices (max-width: 768px) */
@media (max-width: 768px) {
    .site-footer {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .footer-logo-container {
        height: 50px;
    }

    :root {
        --font-hero-heading: 2.2rem;
    }

    .hero-heading {
        font-size: var(--font-hero-heading);
    }

    .hero-paragraph01,
    .hero-paragraph02 {
        font-size: 1.4rem;
    }

    .section-title {
        font-size: var(--font-hero-heading);
    }

    .features-section {
        padding: var(--spacing-sm);
        margin-top: var(--spacing-xl);
        margin-bottom: var(--spacing-xl);
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .feature-item .card-header {
        padding: var(--spacing-sm);
    }

    .feature-item .card-header-title {
        font-size: var(--font-h2);
    }

    .feature-item .icon-feature {
        width: 30px;
        height: 30px;
    }

    .feature-item .card-body {
        padding: var(--spacing-sm);
    }

    .footer-column {
        flex: 1 0 45%;
        min-width: 150px;
    }
}

/* Smaller Mobile Devices (max-width: 480px) */
@media (max-width: 480px) {
    :root {
        --font-hero-heading: 2.0rem;
    }

    .section-title {
        font-size: var(--font-hero-heading);
    }

    .hero-heading {
        font-size: var(--font-hero-heading);
    }

    .features-section {
        padding: var(--spacing-xs);
    }

    .footer-column {
        flex: 1 0 100%;
    }

    .footer-row {
        gap: var(--spacing-md);
    }
}

/* Styles for the Roblox Cards Container */
.roblox-cards-container {
    display: flex;
    flex-wrap: wrap;
    /* Allows cards to wrap to the next line */
    justify-content: space-around;
    /* Distributes space evenly around items */
    gap: 20px;
    /* Space between cards */
    margin-top: 30px;
    margin-bottom: 30px;
}

/* Styles for individual Roblox Cards */
.roblox-card {
    border: 1px solid var(--card-border);
    /* Esta linha define a borda para cada card */
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    background-color: var(--card-background);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1 1 calc(33% - 40px);
    max-width: calc(33% - 40px);
    box-sizing: border-box;
}

/* QR Code Placeholder/Image Styling */
.qr-code-placeholder {
    width: 150px;
    /* Adjust as needed */
    height: 150px;
    /* Adjust as needed */
    margin-bottom: 15px;
    /* You can add a background color or border here if no image is present */
    display: flex;
    justify-content: center;
    align-items: center;
}

.qr-code-placeholder img {
    max-width: 100%;
    max-height: 100%;
    height: auto;
    border-radius: 4px;
    /* Optional: slight border-radius for the image */
}

/* Card Title */
.roblox-card-title {
    font-size: 1.5em;
    margin-bottom: 10px;
    color: var(--text-color);
    /* Use a CSS variable for text color */
}

/* Difficulty Level Text */
.difficulty-level {
    font-size: 1em;
    color: var(--text-color-light);
    /* A slightly lighter text color */
    margin-bottom: 15px;
}

/* Roblox Link Button */
.roblox-inline-link {
    color: var(--link-color);
    font-size: var(--font-h2);
    text-decoration: underline;
    transition: color 0.3s ease;
}

.roblox-inline-link:hover {
    color: var(--link-hover-color);
}

/* Responsive Adjustments */

/* For Tablets (e.g., 768px and up) */
@media (max-width: 1024px) {
    .roblox-card {
        flex: 1 1 calc(50% - 30px);
        /* 2 cards per row */
        max-width: calc(50% - 30px);
    }
}

/* For Mobile Devices (e.g., 480px and up) */
@media (max-width: 767px) {
    .roblox-card {
        flex: 1 1 100%;
        /* 1 card per row */
        max-width: 100%;
    }

    .roblox-cards-container {
        gap: 15px;
        /* Slightly less gap for smaller screens */
    }
}

/* ========================================= */
/* Botão Scroll to Top                       */
/* ========================================= */
.scroll-to-top-btn {
    display: none;
    /* Oculta o botão por padrão */
    position: fixed;
    /* Fixa o botão na tela */
    bottom: 20px;
    /* 20px da parte inferior */
    right: 20px;
    /* 20px da parte direita */
    background-color: var(--scroll-to-top-bg-color);
    /* Cor de fundo usando variável CSS */
    color: #ffffff;
    /* Cor do ícone */
    border: none;
    border-radius: 8px;
    /* Torna-o redondo */
    width: 40px;
    /* Largura do botão */
    height: 40px;
    /* Altura do botão */
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    /* Garante que o botão fique acima de outros elementos */
    opacity: 0;
    /* Inicia com opacidade 0 para a transição */
    visibility: hidden;
    /* Oculta o botão, mas permite transição de opacidade */
    transition: opacity 0.3s ease, visibility 0.3s ease, background-color 0.3s ease;
}

.scroll-to-top-btn.show {
    opacity: 1;
    /* Mostra o botão com transição */
    visibility: visible;
}

.scroll-to-top-btn:hover {
    background-color: var(--scroll-to-top-bg-hover-color);
    /* Altera a cor ao passar o mouse */
}

.scroll-to-top-btn svg {
    width: 24px;
    /* Tamanho do ícone SVG */
    height: 24px;
    /* Tamanho do ícone SVG */
    fill: #ffffff;
    /* Usa a cor do texto definida para o botão */
}

/* ========================================= */
/* Histórico de Versões                      */
/* ========================================= */

.history-title-container {
    margin-top: var(--spacing-xl);
}

/* ========================================= */
/* Panzera 3D Models Inspector               */
/* ========================================= */

.upload-container {
    width: 100%;
    border-radius: 8px;
    padding: var(----spacing-lg);
    margin-bottom: var(----spacing-lg);
    text-align: center;
}

.drop-area {
    border: 2px dashed var(--card-border);
    border-radius: 8px;
    padding: var(--spacing-sm);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: var(--spacing-xl);
    background-color: var(--card-header-bg);
}

.drop-area.highlight {
    border-color: #0066cc;
    background-color: #e6f2ff;
}

.drop-area-text {
    font-size: var(--font-p);
}

.upload-btn {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: #0d6efd;
    color: #ffffff;
    border-radius: 5px;
    border: none;
    font-size: var(--font-p);
    font-family: 'Lexend', sans-serif;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
    width: auto;
}

.upload-btn:hover {
    background-color: #0B5ED7;
}

#fileInput {
    display: none;
}

.supported-formats {
    font-size: var(--font-p);
    text-align: center;
    margin-bottom: var(--spacing-sm);

}

.loading {
    display: none;
    text-align: center;
    margin: var(--spacing-md) 0;
}

.progress-bar {
    width: 100%;
    background-color: #e0e0e0;
    border-radius: 4px;
    margin-top: var(--spacing-md);
}

.progress {
    height: 20px;
    background-color: #0066cc;
    border-radius: 4px;
    width: 0%;
    transition: width 0.3s;
}

.file-info {
    margin-top: var(--spacing-md);
    font-size: var(--font-p);
    text-align: left;
}

.model-stats {
    margin-top: var(--spacing-md);
    font-size: var(--font-p);
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: left;
}

.model-stats div {
    background-color: #f0f0f0;
    padding: 3px 8px;
    border-radius: 3px;
    margin-bottom: var(--spacing-xl);
}

.light-controls-container {
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.light-controls-content {
    padding: var(--spacing-md);
}

.light-control {
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
}

.light-control label {
    width: 120px;
    margin-right: var(--spacing-sm);
    color: #333;
    font-size: var(--font-p);
    color: var(--text-color);
    font-weight: 600;
}

.light-control input[type="range"] {
    flex-grow: 1;
    margin-right: var(--spacing-sm);
    accent-color: #0d6efd;
}

.light-control .value {
    width: 50px;
    text-align: center;
    font-family: 'Lexend', sans-serif;
    font-size: var(--font-p);
    padding: 2px;
    border: 1px solid #ccc;
    border-radius: 3px;
}

.controls-footer {
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
    gap: 10px;
}

.reset-btn {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: #dc3545;
    color: #ffffff;
    border-radius: 5px;
    border: none;
    font-size: var(--font-p);
    font-family: 'Lexend', sans-serif;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
    width: auto;
}

.reset-btn:hover {
    background-color: #c82333;
}

.error-message {
    font-size: var(--font-p);
    text-align: center;
    margin-top: 180px;
    color: red;
}

.hint {
    font-size: var(--font-p);
    text-align: center;
    color: #666;
    margin-top: var(--spacing-md);
}

.viewer-container {
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    min-height: 400px;
}

#modelViewer {
    width: 100%;
    height: 500px;
    border-radius: 8px;
    margin-top: var(--spacing-xxs);
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.loading-status-text {
    text-align: center;
    margin-top: 180px;
    font-size: var(--font-p)
}

#threejs-container {
    width: 100%;
    height: 100%;
}

.dark-mode .viewer-container,
.dark-mode .instructions-container,
.dark-mode .light-controls-container {
    background-color: #1e1e1e;
    border-color: #444;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.dark-mode #modelViewer {
    border-color: #444;
}

.dark-mode .model-stats div {
    background-color: var(--card-header-bg);
}

.dark-mode .drop-area.highlight {
    background-color: #1a2a3a;
}

.dark-mode .progress-bar {
    background-color: var(--card-header-bg);
}

.dark-mode .light-control .value {
    background-color: #2a2a2a;
    color: #e0e0e0;
    border-color: #444;
}

/* ========================================= */
/* History Versions Tabs              */
/* ========================================= */

.tab-buttons-container {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    width: 100%;
}

.tab-button {
    font-size: var(--font-h1);
    font-weight: 600;
    font-family: 'Lexend', sans-serif;
    color: var(--text-color);
    background-color: transparent;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: color 0.3s, background-color 0.3s;
    border-bottom: 2px solid transparent;
}

.tab-button.active {
    color: var(--link-color);
    border-bottom: 2px solid var(--link-color);
}

.tab-button:hover:not(.active) {
    color: var(--link-hover-color);
}

.tab-content {
    display: none;
    width: 100%;
}

.tab-content.active {
    display: block;
}

.tab-content .history-title-container {
    margin-top: 0;
}