/* ===== RESET BÁSICO ===== */

body {
    padding-top: var(--nav-height);
}

html, body {
    width: 100%;
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: #f4f4f4;
    color: #333;
}

/* ===== HEADER ===== */
header {
     background:
      linear-gradient(rgba(10,26,42,.75), rgba(10,26,42,.75));
    color: #fff;

    min-height: calc(100vh - var(--nav-height));
    margin-top: var(--nav-height);

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

    padding: 20px 16px;
    text-align: center;
}


header h1 {
    font-size: 36px;
    margin-bottom: 10px;
}

/* ===== CONTEÚDO ===== */
section {
    max-width: 1000px;
    margin: 40px auto;
    padding: 0 16px;
}

.spaced {
    margin-top: 40px;
}

/* ===== CARDS ===== */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.card {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,.08);
}

/* ===== BOTÃO ===== */
.btn {
    display: inline-block;
    margin-top: 20px;
    background: #1a73e8;
    color: #fff;
    padding: 14px 22px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
}

/* ===== FOOTER ===== */
footer {
    background: #0a1a2a;
    color: #fff;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}

footer a {
    color: #fff;
    text-decoration: none;
}