/* Importa a fonte 'Inter' do Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700&display=swap');

/* Variáveis de Cor para fácil customização */
:root {
    --primary-red: #E53935; /* Vermelho inspirado no projeto */
    --dark-gray: #212121;
    --medium-gray: #424242;
    --light-gray: #f5f5f5;
    --border-color: #e0e0e0;
    --background-color: #ffffff;
    --link-color: #0D47A1;
}

/* Reset básico e Estilos Globais */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
    line-height: 1.7;
    background-color: var(--light-gray);
    color: var(--dark-gray);
}

.container {
    max-width: 850px;
    margin: 30px auto;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px 40px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

/* Cabeçalho e Títulos */
h1, h2, h3 {
    line-height: 1.3;
    margin-bottom: 0.5em;
}

header p {
    margin-bottom: 1.5em;
}

h1 { font-size: 2.2em; color: var(--dark-gray); border-bottom: 2px solid var(--primary-red); padding-bottom: 0.3em; }
h2 { font-size: 1.6em; color: var(--medium-gray); border-bottom: 1px solid var(--border-color); padding-bottom: 0.3em; }
h3 { font-size: 1.25em; border-bottom: none; color: var(--primary-red); }

main > section {
    margin-bottom: 50px;
}

/* --- Seletor de Idiomas (Language Switcher) --- */
.language-switcher {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-bottom: 20px;
}

.language-switcher a,
.language-switcher span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85em;
    text-decoration: none;
    transition: all 0.2s ease;
}

.language-switcher a {
    color: var(--medium-gray);
    border: 1px solid transparent;
}

.language-switcher a:hover {
    background-color: var(--light-gray);
    color: var(--primary-red);
    text-decoration: none;
}

.language-switcher span.active {
    background-color: var(--light-gray);
    color: var(--dark-gray);
    font-weight: 700;
    border: 1px solid var(--border-color);
    cursor: default;
}

/* Links e Navegação */
a { color: var(--link-color); text-decoration: none; }
a:hover { text-decoration: underline; }

.assembly-intro {
    background-color: var(--light-gray);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 30px 20px;
    margin: 50px -40px;
    text-align: center;
}
.assembly-intro h2 {
    border-bottom: none;
    margin-bottom: 20px;
}

nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    padding: 0;
    margin: 0;
}
nav a {
    background-color: #fff;
    border: 1px solid var(--border-color);
    padding: 10px 20px;
    border-radius: 25px;
    margin: 0;
    font-weight: bold;
    color: var(--medium-gray);
    transition: all 0.2s ease-in-out;
    text-decoration: none;
}
nav a:hover {
    background-color: var(--primary-red);
    color: #fff;
    border-color: var(--primary-red);
    text-decoration: none;
}

/* Elementos do Manual */
img { max-width: 100%; height: auto; border-radius: 8px; display: block; margin: 1.5em 0; }
table { border-collapse: collapse; width: 100%; margin: 1.5em 0; }
th, td { border: 1px solid var(--border-color); padding: 12px; text-align: left; }
th { background-color: var(--light-gray); font-weight: bold; }

.step { border-top: 2px solid var(--border-color); padding-top: 30px; margin-top: 40px; }

/* Remove a margem superior do primeiro passo para um espaçamento mais limpo após a navegação */
.assembly-intro + .step {
    margin-top: 0;
}

/* Alertas Visuais */
.warning { background-color: #FFF3E0; border-left: 4px solid #FF9800; padding: 15px 20px; margin: 1.5em 0; border-radius: 0 4px 4px 0; }
.important { background-color: #E3F2FD; border-left: 4px solid #2196F3; padding: 15px 20px; margin: 1.5em 0; border-radius: 0 4px 4px 0; }

.image-table td { border: none; text-align: center; padding: 5px; }

/* Rodapé */
footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--medium-gray);
}
/* Remove border from H2 inside the footer */
footer h2 {
    border-bottom: none;
}

/* --- Responsividade para Smartphones --- */
@media (max-width: 768px) {
    .container {
        margin: 0;
        padding: 15px 20px;
        border-radius: 0;
        border: none;
    }

    .assembly-intro {
        margin: 40px -20px;
    }

    h1 { font-size: 1.8em; }
    h2 { font-size: 1.4em; }

    nav {
        padding: 0;
    }
    nav a {
        /* No need to stack them anymore with flex-wrap */
        margin: 0;
    }
}