* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", Arial, sans-serif;
}

html, body {
    height: 100%;
    overflow: hidden; /* 🔒 Sem scroll */
}

body {
    background: url("../img/fundo.jpg") no-repeat center center;
    background-size: cover;
    position: relative;
    color: #fff;
}

/* Overlay escuro */
.overlay {
    position: absolute;
    inset: 0;
    background: rgba(5, 20, 40, 0.78);
    z-index: 1;
}

/* Cabeçalho */
.topo {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 60px 20px 40px;
}

.topo h1 {
    font-size: 40px;
    font-weight: 700;
    letter-spacing: 1px;
}

.topo span {
    font-size: 18px;
    opacity: 0.9;
}

/* Cards */
.cards-container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-rows: repeat(3, 1fr); /* 3 botões grandes */
    gap: 30px;
    height: calc(100% - 260px);
    padding: 0 60px;
}

.card {
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    border-radius: 24px;
    text-align: center;
    text-decoration: none;
    color: #fff;

    display: flex;
    flex-direction: column;
    justify-content: center;

    transition: transform 0.2s ease, background 0.2s ease;
    border: 2px solid rgba(255,255,255,0.18);
}

.card h2 {
    font-size: 32px;
    margin-bottom: 10px;
}

.card p {
    font-size: 20px;
    opacity: 0.95;
}

/* Feedback ao toque */
.card:active {
    transform: scale(0.97);
    background: rgba(255,255,255,0.25);
}

/* Card em destaque */
.card.destaque {
    border: 3px solid #ff8a00;
    box-shadow: 0 0 35px rgba(255,138,0,0.6);
}

/* Rodapé */
.rodape {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 25px;
    font-size: 16px;
    opacity: 0.9;
}