/* RESET E PADRÕES GERAIS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #1a4e95, #2e7d32);
    color: #333;
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    overflow: hidden;
}

/* CABEÇALHO */
header {
    background: linear-gradient(to right, #1a4e95, #2e7d32);
    color: white;
    padding: 25px 40px;
    text-align: center;
    border-bottom: 5px solid #f9a825;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* NAVEGAÇÃO */
nav {
    display: flex;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    gap: 20px;
    flex-wrap: wrap;
}

.nav-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid white;
    color: white;
    padding: 12px 25px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: block;
    text-align: center;
}

.nav-btn:hover, .nav-btn.active {
    background: white;
    color: #1a4e95;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* CONTEÚDO PRINCIPAL */
.content {
    padding: 30px 40px;
}

.module {
    margin-bottom: 40px;
    background: #f9f9f9;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    border: 1px solid #eee;
}

.module-header {
    background: linear-gradient(90deg, #2e7d32, #1a4e95);
    color: white;
    padding: 20px;
    display: flex;
    align-items: center;
}

.module-number {
    background: #f9a825;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin-right: 20px;
}

.module-title {
    font-size: 24px;
    font-weight: 600;
}

.module-content {
    padding: 25px;
}

.section {
    margin-bottom: 30px;
}

.section h3 {
    color: #1a4e95;
    border-bottom: 2px solid #f9a825;
    padding-bottom: 10px;
    margin-bottom: 20px;
    font-size: 20px;
}

/* CARDS DE FERRAMENTAS */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 20px;
}

.tool-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s ease;
    border: 1px solid #eee;
}

.tool-card:hover {
    transform: translateY(-5px);
}

.tool-header {
    background: #1a4e95;
    color: white;
    padding: 15px;
    display: flex;
    align-items: center;
}

.tool-icon {
    font-size: 24px;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
}

.tool-name {
    font-size: 18px;
    font-weight: 600;
}

.tool-body {
    padding: 20px;
}

.tool-body ul {
    padding-left: 20px;
}

.tool-body li {
    margin-bottom: 10px;
}

/* RODAPÉ */
footer {
    background: #1a4e95;
    color: white;
    text-align: center;
    padding: 30px;
    border-top: 5px solid #f9a825;
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 20px 0;
    flex-wrap: wrap;
}

.footer-nav a {
    color: #f9a825;
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    transition: color 0.3s;
}

.footer-nav a:hover {
    color: white;
    text-decoration: underline;
}

.copyright {
    margin-top: 20px;
    font-size: 14px;
    opacity: 0.8;
}

/* PÁGINA DAS AULAS */
.aula-content {
    padding: 30px 40px;
}

.aula-section {
    margin-bottom: 40px;
}

.aula-section h2 {
    color: #1a4e95;
    border-bottom: 2px solid #f9a825;
    padding-bottom: 15px;
    margin-bottom: 25px;
    font-size: 28px;
}

.aula-content p {
    margin-bottom: 20px;
    text-align: justify;
}

.aula-content ul {
    padding-left: 30px;
    margin: 20px 0;
}

.aula-content ol {
    margin-bottom: 15px;
    position: relative;
    padding-left: 20px;
}

.aula-content li {
    margin-bottom: 15px;
    position: relative;
    padding-left: 20px;
}
/*
.aula-content li:before {
    content: "•";
    color: #2e7d32;
    font-size: 24px;
    position: absolute;
    left: 0;
    top: -5px;
}*/

/* FORMULÁRIO DE ATIVIDADES */
.activity-form {
    background: #f5f9ff;
    padding: 25px;
    border-radius: 10px;
    margin-top: 30px;
    border: 1px dashed #1a4e95;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #1a4e95;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.btn-submit {
    background: #2e7d32;
    color: white;
    border: none;
    padding: 14px 30px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
    display: block;
    width: 100%;
    max-width: 250px;
    margin: 20px auto 0;
    text-align: center;
}

.btn-submit:hover {
    background: #1a4e95;
}

/* GALERIA DE IMAGENS */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.gallery-item {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-5px);
}

.gallery-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}

.gallery-caption {
    padding: 15px;
    background: white;
    font-size: 14px;
    text-align: center;
    color: #555;
}

/* RESPONSIVIDADE */
@media (max-width: 768px) {
    .container {
        border-radius: 0;
    }
  
    header {
        padding: 20px 15px;
    }
  
    .content, .aula-content {
        padding: 20px;
    }
  
    .module-header {
        flex-direction: column;
        text-align: center;
    }
  
    .module-number {
        margin: 0 auto 15px;
    }
  
    .nav-btn {
        padding: 10px 15px;
        font-size: 14px;
    }
  
    .gallery {
        grid-template-columns: 1fr;
    }
}

/* === EXTENSÕES PARA AULAS === */

/* Abas de navegação (Aula 1 e 2) */
.tab-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 20px 0 30px;
    padding: 10px;
    background: #f0f5ff;
    border-radius: 10px;
}

.tab-btn {
    padding: 10px 20px;
    background: #e0e7ff;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    color: #1a4e95;
    cursor: pointer;
    transition: all 0.2s;
}

.tab-btn:hover,
.tab-btn.active {
    background: #1a4e95;
    color: white;
}

/* Cards de IA (Aula 1) */
.ai-card {
    background: #f8fdff;
    border-left: 4px solid #2e7d32;
    padding: 20px;
    border-radius: 0 8px 8px 0;
    margin: 15px 0;
}

.ai-card h4 {
    color: #2e7d32;
    margin-bottom: 8px;
}


    
        :root {
            --primary: #2c6fbb;
            --secondary: #34a853;
            --accent: #fbbc05;
            --dark: #202124;
            --light: #f8f9fa;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #f0f2f5;
            color: #333;
            line-height: 1.6;
        }
        header {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            padding: 2rem 1rem;
            text-align: center;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem 1rem;
        }
        .nav-container {
            background: white;
            border-radius: 10px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
            margin-bottom: 2rem;
            overflow: hidden;
        }
        .timeline {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2px;
            background: #e0e0e0;
        }
        .timeline-item {
            flex: 1;
            min-width: 150px;
            padding: 1.2rem;
            background: white;
            border-left: 4px solid var(--accent);
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
        }
        .timeline-item:hover {
            background: #f0f7ff;
            transform: translateY(-3px);
        }
        .timeline-item.active {
            background: #e8f5e9;
            border-left: 4px solid var(--secondary);
            font-weight: bold;
        }
        .module-card {
            background: white;
            border-radius: 10px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
            margin-bottom: 2rem;
            transition: transform 0.3s ease;
            overflow: hidden;
        }
        .module-card:hover {
            transform: translateY(-5px);
        }
        .card-header {
            background: linear-gradient(135deg, var(--primary), #1a4d8c);
            color: white;
            padding: 1.5rem;
            font-size: 1.4rem;
            font-weight: 600;
        }
        .card-content {
            padding: 2rem;
        }
        .card-content h3 {
            color: var(--primary);
            margin: 1.5rem 0 1rem;
            border-bottom: 2px solid #e0e0e0;
            padding-bottom: 0.5rem;
        }
        .tool-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .tool-card {
            background: #f8f9fa;
            border-radius: 8px;
            padding: 1.2rem;
            border: 1px solid #e0e0e0;
            transition: all 0.2s ease;
        }
        .tool-card:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        .step {
            display: flex;
            margin: 1.2rem 0;
            align-items: flex-start;
        }
        .step-number {
            background: var(--accent);
            color: var(--dark);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            margin-right: 1rem;
            flex-shrink: 0;
        }
        .ethics-box {
            background: #fff8e1;
            border-left: 4px solid var(--accent);
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .activity {
            background: #e8f5e9;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        .prompt-example {
            background: #e3f2fd;
            padding: 1rem;
            border-radius: 8px;
            margin: 1rem 0;
            border-left: 4px solid var(--primary);
        }
        .account-steps {
            counter-reset: step-counter;
            margin: 1.5rem 0;
        }
        .account-step {
            position: relative;
            padding-left: 60px;
            margin-bottom: 1.5rem;
        }
        .account-step:before {
            counter-increment: step-counter;
            content: counter(step-counter);
            position: absolute;
            left: 0;
            top: 0;
            width: 40px;
            height: 40px;
            background: var(--accent);
            color: var(--dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }
        .copilot-steps {
            counter-reset: copilot-counter;
            margin: 1.5rem 0;
        }
        .copilot-step {
            position: relative;
            padding-left: 60px;
            margin-bottom: 1.5rem;
        }
        .copilot-step:before {
            counter-increment: copilot-counter;
            content: counter(copilot-counter);
            position: absolute;
            left: 0;
            top: 0;
            width: 40px;
            height: 40px;
            background: var(--secondary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }
        .ai-tool {
            background: #f0f4f8;
            border-radius: 8px;
            padding: 1.2rem;
            margin: 1rem 0;
            border: 1px solid #d1e3f6;
        }
        .ai-tool h4 {
            color: var(--secondary);
            margin-bottom: 0.5rem;
        }
        footer {
            background: var(--dark);
            color: white;
            text-align: center;
            padding: 2rem;
            margin-top: 2rem;
        }
        @media (max-width: 768px) {
            .timeline {
                flex-direction: column;
            }
            .tool-list {
                grid-template-columns: 1fr;
            }
        }
      
        .footer {
            background: white;
            text-align: center;
            padding: 20px;
            margin-top: 40px;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
      
        .footer-nav {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin: 15px 0;
            flex-wrap: wrap;
        }
      
        .footer-nav a {
            color: #ffffff;
            text-decoration: none;
            font-weight: 600;
            transition: color 0.3s;
        }
      
        .footer-nav a:hover {
            color: #ffffff;
            text-decoration: underline;
        }
      
        .copyright {
            color: #666;
            margin-top: 15px;
            font-size: 0.9rem;
        }
          
        .nav-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin: 40px 0;
        }
        .nav-button {
            padding: 12px 30px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 50px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            text-align: center;
        }
      
        .nav-button:hover {
            background: var(--secondary);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }
  
            :root {
            --primary: #1a4e95;
            --secondary: #2e7d32;
            --accent: #f9a825;
            --light: #f8f9fa;
            --dark: #202124;
        }
      
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
      
        body {
            background-color: #f0f2f5;
            color: #333;
            line-height: 1.6;
        }
      
        .header {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            padding: 2rem 1rem;
            text-align: center;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }
      
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem 1rem;
        }
      
        .navigation {
            display: flex;
            justify-content: center;
            background: white;
            border-radius: 8px;
            padding: 0.5rem;
            margin: 1.5rem 0;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }
      
        .nav-item {
            padding: 0.75rem 1.5rem;
            margin: 0 0.25rem;
            background: var(--light);
            border: none;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
        }
      
        .footer {
            background: white;
            text-align: center;
            padding: 20px;
            margin-top: 40px;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
      
        .footer-nav {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin: 15px 0;
            flex-wrap: wrap;
        }
      
        .footer-nav a {
            color: #1a4e95;
            text-decoration: none;
            font-weight: 600;
            transition: color 0.3s;
        }
      
        .footer-nav a:hover {
            color: #2e7d32;
            text-decoration: underline;
        }
      
        .copyright {
            color: #666;
            margin-top: 15px;
            font-size: 0.9rem;
        }
            
        .nav-item:hover {
            background: #e9ecef;
        }
      
        .nav-item.active {
            background: var(--primary);
            color: white;
        }
      
        .content-section {
            display: none;
            background: white;
            border-radius: 8px;
            padding: 2rem;
            margin-top: 1.5rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
      
        .content-section.active {
            display: block;
            animation: fadeIn 0.5s ease;
        }

        .nav-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin: 40px 0;
        }
        .nav-button {
            padding: 12px 30px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 50px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            text-align: center;
        }
      
        .nav-button:hover {
            background: var(--secondary);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }
        
      
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
      
        h2 {
            color: var(--primary);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e0e0e0;
        }
      
        h3 {
            color: var(--secondary);
            margin: 1.2rem 0 0.8rem;
        }
      
        .card {
            background: var(--light);
            border-radius: 8px;
            padding: 1.5rem;
            margin: 1.2rem 0;
            border-left: 4px solid var(--accent);
        }
      
        .step {
            display: flex;
            margin: 1.2rem 0;
            align-items: flex-start;
        }
      
        .step-number {
            background: var(--accent);
            color: var(--dark);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            margin-right: 1rem;
            flex-shrink: 0;
        }
      
        .editor-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
            margin: 1.5rem 0;
        }
      
        .editor-card {
            background: white;
            border-radius: 8px;
            padding: 1.5rem;
            box-shadow: 0 2px 6px rgba(0,0,0,0.05);
            border: 1px solid #e0e0e0;
            transition: all 0.3s ease;
        }
      
        .editor-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
            border-color: var(--primary);
        }
      
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
      
        .comparison-table th, .comparison-table td {
            padding: 12px 15px;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }
      
        .comparison-table th {
            background-color: #f5f7fa;
            font-weight: 600;
        }
      
        .comparison-table tr:hover {
            background-color: #f9f9f9;
        }
      
        .activity-card {
            background: #e8f5e9;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
      
        .resource-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
      
        .resource-card {
            background: #e3f2fd;
            border-radius: 8px;
            padding: 1rem;
            text-align: center;
        }
      
        .footer {
            text-align: center;
            padding: 2rem 0;
            color: #666;
            margin-top: 2rem;
            border-top: 1px solid #e0e0e0;
        }
      
        .infographic {
            max-width: 100%;
            border-radius: 8px;
            margin: 1.5rem 0;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
      
        .qr-code {
            width: 120px;
            height: 120px;
            margin: 15px auto;
            background: #f5f5f5;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px dashed #ccc;
            font-size: 0.8rem;
            color: #666;
        }

                :root {
            --primary: #1a4e95;
            --secondary: #2e7d32;
            --accent: #f9a825;
            --light: #f8f9fa;
            --dark: #202124;
        }
      
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
      
        .footer {
            background: white;
            text-align: center;
            padding: 20px;
            margin-top: 40px;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
      
        .footer-nav {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin: 15px 0;
            flex-wrap: wrap;
        }
      
        .footer-nav a {
            color: #1a4e95;
            text-decoration: none;
            font-weight: 600;
            transition: color 0.3s;
        }
      
        .footer-nav a:hover {
            color: #2e7d32;
            text-decoration: underline;
        }
      
        .copyright {
            color: #666;
            margin-top: 15px;
            font-size: 0.9rem;
        }
            
        body {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: var(--dark);
            line-height: 1.6;
            padding: 20px;
        }
       .header {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            padding: 2rem 1rem;
            text-align: center;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }
      
        .header1 {
            background: white;
            border-radius: 15px;
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            text-align: center;
            border: 2px solid var(--accent);
        }
      
        .header1 h1 {
            color: var(--primary);
            font-size: 2.5rem;
            margin-bottom: 10px;
        }
      
        .header1 p {
            color: var(--secondary);
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
        }
      
        .container {
            max-width: 1200px;
            margin: 0 auto;
        }
      
        .module {
            background: white;
            border-radius: 15px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            transition: transform 0.3s ease;
        }
      
        .module:hover {
            transform: translateY(-5px);
        }
      
        .module h2 {
            color: var(--primary);
            border-bottom: 3px solid var(--accent);
            padding-bottom: 15px;
            margin-bottom: 25px;
            display: flex;
            align-items: center;
        }
      
        .module h2::before {
            content: "•";
            color: var(--accent);
            font-size: 2rem;
            margin-right: 15px;
        }
      
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
      
        .theory, .practice {
            padding: 20px;
            border-radius: 10px;
        }
      
        .theory {
            background: #e8f4fc;
            border-left: 5px solid var(--primary);
        }
      
        .practice {
            background: #e8f5e9;
            border-left: 5px solid var(--secondary);
        }
      
        h3 {
            color: var(--primary);
            margin-bottom: 15px;
            display: flex;
            align-items: center;
        }
      
        h3::after {
            content: "";
            flex: 1;
            height: 2px;
            background: linear-gradient(to right, var(--accent), transparent);
            margin-left: 15px;
        }
      
        ul {
            padding-left: 25px;
            margin: 15px 0;
        }
      
        li {
            margin-bottom: 12px;
            line-height: 1.6;
        }
      
        .tip {
            background: #fff8e1;
            border-left: 4px solid var(--accent);
            padding: 15px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
      
        .exercise {
            background: #f5f5f5;
            padding: 20px;
            border-radius: 10px;
            margin: 25px 0;
            border: 1px dashed var(--primary);
        }
      
        .exercise h4 {
            color: var(--secondary);
            margin-bottom: 15px;
        }
      
        .nav-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin: 40px 0;
        }
      
        .nav-button {
            padding: 12px 30px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 50px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            text-align: center;
        }
      
        .nav-button:hover {
            background: var(--secondary);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }
      
        .screenshots {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 20px;
            margin: 30px 0;
        }
      
        .screenshot {
            width: 45%;
            min-width: 300px;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
        }
      
        .screenshot img {
            width: 100%;
            height: auto;
            display: block;
        }
      
        .screenshot-caption {
            text-align: center;
            font-style: italic;
            color: #555;
            margin-top: 10px;
        }
      
        .keyboard-shortcuts {
            background: #f1f8e9;
            padding: 20px;
            border-radius: 10px;
            margin: 25px 0;
        }
      
        .footer {
            text-align: center;
            padding: 30px;
            color: black;
            margin-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.2);
        }
      
        @media (max-width: 768px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
          
            .screenshot {
                width: 100%;
            }
          
            .nav-buttons {
                flex-direction: column;
                align-items: center;
            }
        }


            .atalhos {
      background-color: #eef;
      padding: 15px;
      border-radius: 8px;
      margin-top: 20px;
    }
    .atalhos h2 {
      margin-top: 0;
    }

     .dicas {
      background-color: #fff;
      padding: 20px;
      margin-bottom: 20px;
      border-radius: 8px;
      box-shadow: 0 0 5px rgba(0,0,0,0.1);
    }