/* ============================================== */
/* ESTILOS GLOBAIS E FINAIS DO PROJETO            */
/* ============================================== */

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    color: #333;
    margin: 0;
    padding: 0;
}

/* --- BARRA DE NAVEGAÇÃO PRINCIPAL (CORRIGIDA) --- */

/* A faixa de fundo verde que ocupa 100% da largura */
.nav-background {
    background-color: #2E7D32;
    padding: 10px 0; /* Espaçamento vertical */
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    color: white;
}

/* O contêiner que centraliza o conteúdo da navegação */
.nav-container {
    max-width: 1400px;  /* Mesma largura máxima do conteúdo principal */
    margin: 0 auto;     /* Centraliza o contêiner */
    padding: 0 20px;    /* Alinha com o padding lateral do conteúdo */
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 15px;
}
.nav-logo {
    height: 40px;
}
.nav-brand a {
    color: white;
    text-decoration: none;
    font-size: 1.5em;
    font-weight: bold;
}

.nav-links-menu a {
    color: white;
    text-decoration: none;
    padding: 10px 15px;
    border-radius: 5px;
    transition: background-color 0.2s;
}
.nav-links-menu a:hover {
    background-color: #1B5E20;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 15px;
}
.nav-user a {
    background-color: #A5D6A7;
    color: #1B5E20;
    font-weight: bold;
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 20px;
    transition: background-color 0.2s;
}
.nav-user a:hover {
    background-color: #81C784;
}


/* --- LAYOUTS DE PÁGINA --- */

/* Contêiner principal para as páginas com colunas */
.container, .container-livro {
    display: flex;
    gap: 20px;
    max-width: 1400px;
    margin: 20px auto;
    padding: 0 20px;
    flex-wrap: wrap;
}

/* Coluna genérica */
.coluna {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

/* --- PÁGINA HOME --- */

.home-container {
    max-width: 900px;
    margin: 40px auto;
    padding: 20px;
    text-align: center;
}
.home-container h1 { color: #2E7D32; }
.home-container .nav-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
    flex-wrap: wrap;
}
.card-link {
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 30px;
    width: 300px;
    text-decoration: none;
    color: #333;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    transition: all 0.3s;
}
.card-link:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    border-color: #2E7D32;
}
.card-link h2 {
    margin-top: 0;
    color: #2E7D32;
}

/* --- PÁGINA DE LOGIN --- */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
.login-form {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}
.login-logo {
    height: 60px;
    margin-bottom: 20px;
    background-color: #2E7D32;
    padding: 10px;
    border-radius: 5px;
}
.login-form h2 {
    color: #2E7D32;
    margin-bottom: 20px;
}
.input-group {
    margin-bottom: 15px;
    text-align: left;
}
.input-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}
.input-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-sizing: border-box;
}
.login-form button {
    width: 100%;
    padding: 12px;
    border: none;
    background-color: #2E7D32;
    color: white;
    font-size: 1.1em;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}
.login-form button:hover {
    background-color: #1B5E20;
}
.error-message {
    color: #dc3545;
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 15px;
}