body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, rgba(30, 3, 64, 0.7), rgba(13, 26, 79, 0.7)), url('background-retro.png');
    color: #ffffff;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

header {
    text-align: center;
    padding: 20px;
    background-color: rgba(45, 45, 68, 0.9);
}

.header-content {
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    flex-wrap: wrap;
}

header h1 {
    margin: 0;
    flex-grow: 1;
    text-align: center;
}

.nav-toggle {
    background: #c2410c;
    color: #ffffff;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 1em;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
    margin-right: 10px;
}

.nav-toggle:hover, .nav-toggle:focus {
    background: #ea580c;
    transform: scale(1.05);
    outline: 2px solid #ffffff;
}

.nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 20px;
    background: rgba(45, 45, 68, 0.95);
    border-radius: 8px;
    padding: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

.nav-menu a {
    display: block;
    color: #ffffff;
    text-decoration: none;
    padding: 10px;
    font-size: 1em;
    transition: background 0.2s ease;
}

.nav-menu a:hover {
    background: #5b21b6;
    border-radius: 5px;
}

.container {
    flex: 1;
    padding: 15px;
    text-align: center;
    max-width: 800px;
    margin: 20px auto;
    background: rgba(30, 41, 59, 0.9);
    border-radius: 10px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
}

.container a:not(.btn):not(.back-btn):not(.file-label-custom):not(.share-btn) {
    color: #f97316;
    text-decoration: underline;
}

.container a:not(.btn):not(.back-btn):not(.file-label-custom):not(.share-btn):hover {
    color: #ffaa33;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    margin: 8px;
    background: #c2410c;
    color: #ffffff;
    text-decoration: none;
    border: none;
    border-radius: 25px;
    font-size: 1.2em;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(194, 65, 12, 0.4);
    transition: transform 0.2s ease, background 0.2s ease;
}

.btn:hover, .btn:focus {
    background: #ea580c;
    transform: scale(1.1);
    outline: 2px solid #ffffff;
}

.back-btn {
    display: inline-block;
    padding: 12px 30px;
    margin: 8px;
    background: #5b21b6;
    color: #ffffff;
    text-decoration: none;
    border: none;
    border-radius: 25px;
    font-size: 1.2em;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(91, 33, 182, 0.4);
    transition: transform 0.2s ease, background 0.2s ease;
}

.back-btn:hover, .back-btn:focus {
    background: #7c3aed;
    transform: scale(1.1);
    outline: 2px solid #ffffff;
}

nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.inteligencias-list, .tutorial-list {
    list-style-type: none;
    padding: 0;
    margin: 20px 0;
    text-align: left;
}

.inteligencias-list li {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.inteligencias-list .intel-icon {
    width: 24px;
    height: 24px;
    margin-right: 15px;
    background: rgba(91, 33, 182, 0.8);
    padding: 3px;
    border-radius: 5px;
    border: 1px solid #c2410c;
    vertical-align: middle;
}

.inteligencias-list span {
    flex: 1;
    text-align: left;
    line-height: 1.5;
}

.tutorial-list {
    margin-top: 15px;
}

.intel-icon {
    vertical-align: middle;
    margin-right: 10px;
    width: 24px;
    height: 24px;
    background: rgba(91, 33, 182, 0.8);
    padding: 3px;
    border-radius: 5px;
    border: 1px solid #c2410c;
}

.intro-text {
    margin: 10px 0;
}

.file-label {
    display: inline-flex;
    align-items: center;
    background: rgba(30, 41, 59, 0.9);
    color: #ffffff;
    padding: 12px 20px;
    border: 1px solid #c2410c;
    border-radius: 8px;
    cursor: pointer;
    margin: 15px 0;
}

.file-label-custom {
    display: inline-block;
    background: rgba(30, 41, 59, 0.9);
    color: #ffffff;
    padding: 12px 20px;
    border: 1px solid #c2410c;
    border-radius: 8px;
    cursor: pointer;
    margin: 8px;
    text-decoration: none;
    font-size: 1.2em;
    transition: transform 0.2s ease, background 0.2s ease;
}

.file-label-custom:hover, .file-label-custom:focus {
    background: rgba(45, 45, 68, 0.9);
    transform: scale(1.1);
    outline: 2px solid #ffffff;
}

#fileInput {
    display: none;
}

#fileFeedback {
    margin-top: 15px;
    font-size: 1.1em;
    background: rgba(30, 41, 59, 0.9);
    padding: 12px;
    border-radius: 8px;
}

.result-buttons {
    margin-top: 15px;
}

.share-btn {
    padding: 12px 30px;
    background: #f97316;
    color: #ffffff;
    border: none;
    border-radius: 25px;
    font-size: 1.2em;
    margin-top: 15px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.4);
    transition: transform 0.2s ease, background 0.2s ease;
}

.share-btn:hover, .share-btn:focus {
    background: #ea580c;
    transform: scale(1.1);
    outline: 2px solid #ffffff;
}

.nav-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.tutorial-item {
    margin-bottom: 20px;
}

.tutorial-description {
    margin-top: 15px;
    padding: 12px;
    background-color: rgba(45, 45, 68, 0.9);
    border-radius: 8px;
    border: 1px solid #3d3d5a;
    text-align: left;
    display: block;
}

.tutorial-description h4 {
    margin-top: 0;
    font-size: 16px;
    color: #ecf0f1;
    margin-bottom: 8px;
}

.tutorial-description p {
    margin: 5px 0;
    font-size: 1em;
    line-height: 1.5;
}

.tutorial-description ol {
    margin: 8px 0;
    padding-left: 18px;
}

.tutorial-description ul {
    list-style-type: none;
    padding-left: 18px;
}

.tutorial-description li {
    margin: 4px 0;
    font-size: 1em;
}

.tutorial-description li strong {
    color: #ecf0f1;
}

.tutorial-description a {
    color: #c2410c;
    text-decoration: underline;
}

.tutorial-description a:hover {
    color: #ea580c;
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.copy-btn {
    margin-top: 10px;
    background-color: #2ecc71;
    padding: 10px 25px;
    border-radius: 25px;
    font-size: 1.1em;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease;
}

.copy-btn:hover {
    background-color: #27ae60;
    transform: scale(1.1);
    outline: 2px solid #ffffff;
}

.title-icon {
    vertical-align: middle;
    margin-right: 8px;
}

.note {
    font-style: italic;
    color: #ffffff;
    background: rgba(91, 33, 182, 0.7);
    padding: 8px;
    border-radius: 8px;
    margin: 12px 0;
    font-size: 1.2em;
    text-align: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.note strong {
    color: #f97316;
}

.intelligence-selection {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin: 15px 0;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.intel-option {
    display: flex;
    align-items: center;
    padding: 10px;
    background-color: rgba(45, 45, 68, 0.9);
    border-radius: 8px;
    transition: background-color 0.2s ease;
    cursor: pointer;
}

.intel-option:hover {
    background-color: #3d3d5a;
}

.intel-option input[type="checkbox"] {
    margin-right: 10px;
    transform: scale(1.4);
    cursor: pointer;
    accent-color: #c2410c;
}

.intel-option span {
    font-size: 14px;
    margin-left: 5px;
}

#resultsChart {
    max-height: 200px;
    max-width: 100%;
    margin: 15px auto;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
    padding: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.hidden-buttons {
    display: none;
}

@media (max-width: 768px) {
    .intelligence-selection {
        grid-template-columns: 1fr;
    }
    .tutorial-description {
        font-size: 0.9em;
    }
    .button-group {
        flex-direction: column;
        gap: 5px;
    }
    .header-content {
        flex-direction: column;
        align-items: center;
    }
    .nav-toggle {
        margin-right: 0;
        margin-bottom: 10px;
    }
    .nav-menu {
        top: 120px;
        left: 10px;
        width: 200px;
    }
}

@media (max-width: 600px) {
    .container { 
        max-width: 95%; 
        padding: 10px; 
    }
    h1 { font-size: 1.8em; }
    h2 { font-size: 1.4em; }
    .btn, .share-btn, .back-btn, .copy-btn { 
        font-size: 1em; 
        padding: 8px 15px; 
        margin: 5px; 
    }
    .nav-buttons, .result-buttons { 
        flex-direction: column; 
        gap: 5px; 
    }
    .tutorial-item {
        margin-bottom: 15px;
    }
    video {
        width: 100%;
        max-width: 100%;
    }
    .tutorial-description {
        padding: 10px;
    }
    .tutorial-description h4 { font-size: 14px; }
    .tutorial-description li { margin: 3px 0; }
    .inteligencias-list li {
        flex-direction: column;
        padding: 8px;
    }
    .inteligencias-list img.intel-icon {
        margin-bottom: 8px;
    }
    .inteligencias-list span { font-size: 0.9em; }
    input[type="radio"] { margin: 3px; }
    #resultsChart { max-height: 150px; padding: 8px; }
    .file-label { padding: 8px 12px; margin: 10px 0; }
    .file-label-custom { 
        padding: 8px 12px; 
        margin: 5px 0; 
        font-size: 1em; 
    }
    .note { font-size: 1em; padding: 6px; margin: 10px 0; }
    .intelligence-selection { gap: 8px; }
    .intel-option { padding: 8px; }
    .intel-option span { font-size: 12px; }
}

@media (max-width: 480px) {
    .banner {
        width: 100%;
        height: auto;
        max-height: 200px;
        object-fit: contain;
    }
}

@media (max-width: 320px) {
    .banner {
        width: 100%;
        height: auto;
        max-height: 150px;
        object-fit: contain;
    }
    .container {
        padding: 5px;
        margin: 10px auto;
    }
    h1 {
        font-size: 1.5em;
    }
    nav {
        gap: 5px;
    }
    .btn, .back-btn {
        font-size: 0.9em;
        padding: 6px 10px;
    }
}

.banner {
    width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.text-link-intro {
    margin: 10px 0;
    font-size: 1em;
    color: #ecf0f1;
    text-align: center;
}

.text-link {
    margin-top: 15px;
    text-align: center;
}

.accessibility-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: #c2410c;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(194, 65, 12, 0.4);
    transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
    z-index: 1000;
    font-size: 1.5em;
    color: #ffffff;
}

.accessibility-btn:hover, .accessibility-btn:focus {
    background: #ea580c;
    transform: scale(1.1);
    box-shadow: 0 6px 15px rgba(234, 88, 12, 0.6);
    outline: 2px solid #ffffff;
}

.accessibility-btn:focus {
    outline: 3px solid #ffffff;
}

.accessibility-menu {
    display: none;
    position: fixed;
    top: 80px;
    right: 20px;
    background: rgba(45, 45, 68, 0.9);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    padding: 10px;
    max-height: 200px;
    overflow-y: auto;
}

.accessibility-menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.accessibility-menu li {
    margin: 5px 0;
}

.accessibility-menu button {
    background: #5b21b6;
    color: #ffffff;
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    width: 100%;
    transition: background 0.2s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 1em;
}

.accessibility-menu button:hover {
    background: #7c3aed;
}

.accessibility-menu button:focus {
    outline: 2px solid #ffffff;
}

.high-contrast body {
    background: #000000;
    color: #ffffff;
}

.high-contrast .container {
    background: rgba(30, 41, 59, 1);
}

.high-contrast .btn, .high-contrast .back-btn, .high-contrast .accessibility-btn {
    background: #ff4500;
}

.high-contrast .btn:hover, .high-contrast .back-btn:hover, .high-contrast .accessibility-btn:hover {
    background: #ff6347;
}

.large-text body {
    font-size: 1.2em;
}

.distraction-free .banner {
    display: none !important;
}

.hidden {
    display: none !important;
}

footer {
    text-align: center;
    padding: 10px;
    background: rgba(45, 45, 68, 0.9);
    margin-top: auto;
    font-size: 0.9em;
}

footer a {
    color: #c2410c;
    text-decoration: none;
}

footer a:hover {
    color: #ea580c;
}

@media (max-width: 600px) {
    .accessibility-btn {
        width: 40px;
        height: 40px;
        font-size: 1.2em;
        top: 10px;
        right: 10px;
    }
    .accessibility-menu {
        top: 60px;
        right: 10px;
        max-width: 200px;
    }
}

.tutorial-item p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.tutorial-item ol {
    margin: 20px 0;
    padding-left: 25px;
}

.tutorial-item ol li {
    margin-bottom: 15px;
}

.tutorial-item ul {
    margin: 15px 0;
    padding-left: 30px;
}

.tutorial-item ul li {
    margin-bottom: 10px;
}

.info-box {
    margin: 20px 0;
    padding: 15px;
}

.info-box p {
    margin-bottom: 15px;
}

.steps-nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    max-width: 400px;
    margin: 0 auto;
}

.step-btn, .extra-btn {
    width: 100%;
    max-width: 350px;
    text-align: center;
    padding: 12px 20px;
    box-sizing: border-box;
}

.step-btn {
    background: #c2410c;
    box-shadow: 0 4px 12px rgba(194, 65, 12, 0.4);
}

.step-btn:hover, .step-btn:focus {
    background: #ea580c;
    transform: scale(1.1);
    outline: 2px solid #ffffff;
}

.extra-btn {
    background: #5b21b6;
    box-shadow: 0 4px 12px rgba(91, 33, 182, 0.4);
}

.extra-btn:hover, .extra-btn:focus {
    background: #7c3aed;
    transform: scale(1.1);
    outline: 2px solid #ffffff;
}

@media (max-width: 600px) {
    .steps-nav {
        gap: 10px;
    }
    .step-btn, .extra-btn {
        max-width: 300px;
        font-size: 1em;
        padding: 10px 15px;
    }
}

/* Estilo para os botões extras no index.html */
.extra-buttons {
    display: none; /* Oculta por padrão */
}