/* Reset e estrutura base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    color: #1e293b;
    min-height: 100vh;
}

/* Fade-in suave */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.7s ease-in-out;
}

/* Cabeçalho */
.header {
    background-color: #1e293b;
    padding: 16px 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: flex-end;
}

.nav a {
    color: #cbd5e1;
    text-decoration: none;
    margin-left: 20px;
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.nav a:hover {
    color: #ffffff;
}

/* Conteúdo principal */
.main-content {
    width: 90%;
    max-width: 1200px;
    margin: 40px auto;
    text-align: center;
}

/* Título */
.page-title {
    font-size: 2rem;
    margin-bottom: 30px;
    color: #1e3a8a;
}

/* Grid responsivo */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

/* Cards */
.card {
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.card-body p {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1e3a8a;
    text-align: center;
}

/* Botões */
.card-footer {
    margin-top: 20px;
    text-align: center;
}

.card-btn {
    background-color: #3b82f6;
    color: #ffffff;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    transition: background-color 0.3s ease;
}

.card-btn:hover {
    background-color: #2563eb;
}

/* Responsividade adicional */
@media (max-width: 500px) {
    .nav {
        justify-content: center;
        flex-wrap: wrap;
    }

    .page-title {
        font-size: 1.6rem;
    }

    .card-body p {
        font-size: 1rem;
    }

    .card-btn {
        font-size: 0.9rem;
        padding: 8px 16px;
    }
}