/* Variáveis de cores para facilitar mudanças */
:root {
    --primary-color: #003366;
    --accent-color: #00a8e8;
    --bg-color: #f4f7f9;
    --card-bg: #ffffff;
    --text-color: #333;
}

body {
    background-color: var(--bg-color);
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
}

header {
    width: 100%;
    padding: 40px 20px;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    margin-bottom: 40px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

header h1 {
    margin: 0;
    font-weight: 800;
    letter-spacing: -1px;
    font-size: 2.2rem;
}

header h1 span {
    font-weight: 400;
    opacity: 0.9;
}

.container {
    max-width: 1000px;
    width: 90%;
    margin-bottom: 50px;
}

.grid-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
}

.card {
    background: var(--card-bg);
    text-decoration: none;
    color: var(--text-color);
    padding: 20px;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 20px rgba(0,0,0,0.08);
    border-color: var(--accent-color);
}

.card img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: 15px;
    border-radius: 8px;
}

.card span {
    font-weight: 600;
    font-size: 0.95rem;
}

/* Ajuste para telas pequenas */
@media (max-width: 600px) {
    header h1 {
        font-size: 1.5rem;
    }
    .grid-links {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    }
}