/* ===== Variáveis de cores ===== */
:root {
    --primary-color: #4a90e2;
    --secondary-color: #f5f5f5;
    --text-color: #4e4e4e;
    --bg-color: #ffffff;
    --btn-color: #4a90e2;
    --btn-hover: #357ABD;
}

/* ===== Reset básico ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
    transition: background 0.3s, color 0.3s;
}

/* ===== Dark mode ===== */
body.dark-mode {
    background-color: #1e1e1e;
    color: #f5f5f5;
}
.class-card{
    border: #fff2f2;
    border-style: groove;
    
}
h1 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    text-transform: uppercase;
}

/* ===== Imagem ===== */
img {
    display: block;
    max-width: 400px;
    width: 100%;
    margin: 20px auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    transition: transform 0.3s;
}

img:hover {
    transform: scale(1.05);
}

/* ===== Parágrafo ===== */
p {
    max-width: 800px;
    margin: 0 auto 30px;
    font-size: 1.1rem;
    text-align: justify;
    line-height: 1.8;
}

/* ===== Seção do botão ===== */
section {
    text-align: center;
    margin-bottom: 50px;
}

a.btn-veja-mais {
    display: inline-block;
    padding: 12px 25px;
    background-color: var(--btn-color);
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    border-radius: 8px;
    transition: background 0.3s, transform 0.3s;
}

a.btn-veja-mais:hover {
    background-color: var(--btn-hover);
    transform: scale(1.05);
}

/* ===== Botão de dark mode ===== */
#toggle-dark {
    position: fixed;
    top: 20px;
    right: 20px; /* Alterado de left para right */
    background: transparent;
    border: none;
    color: #fff;
    padding: 10px 15px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: background 0.3s, transform 0.3s;
    z-index: 1000;
}

#toggle-dark:hover {
    background: transparent;
    transform: scale(1.1);
}


/* ===== Responsividade ===== */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    p {
        font-size: 1rem;
        padding: 0 10px;
    }

    img {
        max-width: 90%;
    }
}