/* Estilos Gerais do Body */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    transition: background-color 0.5s ease, color 0.5s ease;
}

/* Variáveis para o Tema Claro (Padrão) */
:root {
    --background-color: #e9ebee;
    --card-background: #fff;
    --text-color: #444;
    --primary-color: #007bff;
    --border-color: #ddd;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

/* Variáveis para o Tema Escuro */
body.dark-mode {
    --background-color: #121212;
    --card-background: #1e1e1e;
    --text-color: #e0e0e0;
    --primary-color: #61dafb;
    --border-color: #333;
    --shadow-color: rgba(0, 0, 0, 0.5);
}

/* Estilos para o Conteúdo Principal */
.container {
    max-width: 960px;
    margin: 20px auto;
    padding: 20px;
    background: var(--card-background);
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-color);
}

/* Estilos do Cabeçalho */
header {
    text-align: center;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

header img {
    border-radius: 50%;
    width: 150px;
    height: 150px;
    border: 5px solid var(--primary-color);
    object-fit: cover;
}

header h1 {
    margin: 10px 0;
    font-size: 2.8em;
    color: var(--text-color);
}

header p {
    color: var(--text-color);
    font-style: italic;
}

/* Estilos do Botão */
#theme-toggle {
    display: block;
    margin: 20px auto;
    padding: 10px 20px;
    font-size: 1rem;
    font-weight: bold;
    color: var(--background-color);
    background-color: var(--text-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease, color 0.3s ease;
}

#theme-toggle:hover {
    opacity: 0.8;
}

/* Estilos para as Seções */
section {
    padding: 20px 0;
}

h2 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 5px;
    margin-bottom: 20px;
}

ul {
    list-style: none;
    padding: 0;
}

li {
    background: var(--card-background);
    color: var(--text-color);
    margin-bottom: 8px;
    padding: 10px;
    border-left: 5px solid var(--primary-color);
    border-radius: 4px;
}

/* Estilos do Rodapé */
footer {
    text-align: center;
    padding-top: 20px;
    color: var(--text-color);
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

footer a:hover {
    color: var(--primary-color);
}

/* Estilos Responsivos (para telas menores que 600px) */
@media (max-width: 600px) {
    .container {
        width: 100%;
        padding: 10px;
        margin: 10px auto;
    }

    header {
        padding: 1rem 0;
    }
    
    header h1 {
        font-size: 1.8em;
    }

    header p {
        font-size: 0.9em;
    }

    header img {
        width: 100px;
        height: 100px;
    }

    section {
        padding: 1rem;
    }
}
/* Estilos para o Formulário de Contato */
#contato {
    background-color: var(--card-background);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: var(--text-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    box-sizing: border-box; /* Garante que padding e borda não aumentem o tamanho total do elemento */
    background-color: var(--card-background);
    color: var(--text-color);
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

#contato button {
    display: block;
    width: 100%;
    padding: 12px;
    font-size: 1rem;
    font-weight: bold;
    color: var(--background-color);
    background-color: var(--primary-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#contato button:hover {
    background-color: var(--text-color);
    color: var(--background-color);
}
/* Estilos da Lista de Tarefas */
#lista-de-tarefas {
    background-color: var(--card-background);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-color);
    margin-top: 2rem;
}

.todo-input {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}

#nova-tarefa {
    flex-grow: 1;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: var(--card-background);
    color: var(--text-color);
    font-family: inherit;
    transition: border-color 0.3s ease;
}

#nova-tarefa:focus {
    outline: none;
    border-color: var(--primary-color);
}

#adicionar-tarefa {
    padding: 10px 15px;
    border: none;
    background-color: var(--primary-color);
    color: #fff;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#adicionar-tarefa:hover {
    opacity: 0.9;
}

#lista {
    list-style: none;
    padding: 0;
    margin-top: 20px;
}

#lista li {
    background-color: var(--background-color);
    border-radius: 5px;
    padding: 15px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

#lista li:hover {
    background-color: var(--border-color);
}

.tarefa-texto {
    flex-grow: 1;
    color: var(--text-color);
}

.remover-btn {
    background-color: #e74c3c;
    color: #fff;
    border: none;
    padding: 5px 10px;
    border-radius: 50%;
    cursor: pointer;
}