/* Reset básico */
body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f4f6f8; /* Cinza muito claro */
    color: #2c3e50; /* Azul escuro forte */
}

/* Header estilizado com degradê suave e espaçamento */
header {
    background: linear-gradient(135deg, #1e3a8a, #2563eb); /* Azul escuro para azul vibrante */
    color: white;
    padding: 60px 20px;
    text-align: center;
    box-shadow: 0 4px 10px rgba(30, 58, 138, 0.4);
}

header h1 {
    font-size: 3rem;
    margin-bottom: 15px;
    font-weight: 700;
}

header p.lead {
    font-size: 1.25rem;
    font-weight: 500;
    letter-spacing: 0.03em;
}

/* Container principal */
.container {
    max-width: 800px;
    margin: 40px auto;
    background: white;
    padding: 30px 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(44, 62, 80, 0.1);
    text-align: center;
}

/* Títulos e textos do container */
.container h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #1e3a8a;
    font-weight: 700;
}

.container p {
    font-size: 1.15rem;
    margin-bottom: 40px;
    color: #34495e;
}

/* Grupo de botões */
.button-group {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
}

.button-group .btn {
    background-color: #2563eb; /* azul padrão */
    color: #fff;
    padding: 14px 28px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    box-shadow: 0 3px 8px rgba(37, 99, 235, 0.4);
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
}

.button-group .btn:hover {
    background-color: #1e40af; /* azul escuro hover */
    transform: scale(1.06);
    box-shadow: 0 5px 15px rgba(30, 64, 175, 0.6);
}

/* Rodapé */
footer {
    background-color: #1e293b; /* Azul escuro quase preto */
    color: #cbd5e1; /* Cinza claro */
    text-align: center;
    padding: 15px 10px;
    font-size: 0.9rem;
    box-shadow: 0 -3px 6px rgba(30, 41, 59, 0.7);
}