* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    min-height: 100vh;
}

.background {
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, #1a3a6b, #1e4d92, #2d5a9f);
    z-index: -1;
}

.container {
    min-height: 100vh;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.header {
    text-align: center;
    color: #fff;
    animation: fadeDown 1s ease;
}

.header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
}

.header p {
    opacity: 0.85;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
    animation: fadeUp 1.2s ease;
    margin: 30px 0;
}

.card {
    backdrop-filter: blur(15px);
    background: rgba(255, 255, 255, 0.12);
    border-radius: 20px;
    padding: 35px;
    text-align: center;
    color: #fff;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 30px 60px rgba(0,0,0,0.5);
}

.icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

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

.card p {
    opacity: 0.85;
    margin-bottom: 25px;
}

.card button {
    padding: 12px 30px;
    border-radius: 30px;
    border: none;
    background: linear-gradient(135deg, #00c6ff, #0072ff);
    color: #fff;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card button:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 25px rgba(0,114,255,0.6);
}

.footer {
    text-align: center;
    color: #fff;
    font-size: 14px;
    margin-top: 40px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.footer span {
    color: #fff !important;
    font-weight: 600;
}

/* animações */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Media Queries para Responsividade */

/* Tablets (768px até 1024px) */
@media (max-width: 1024px) {
    .container {
        padding: 30px;
    }

    .header h1 {
        font-size: 2.2rem;
    }

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

    .card {
        padding: 25px;
    }

    .icon {
        font-size: 2.5rem;
    }
}

/* Celulares (até 768px) */
@media (max-width: 768px) {
    .container {
        padding: 20px;
        min-height: auto;
    }

    .header h1 {
        font-size: 1.8rem;
        margin-bottom: 8px;
    }

    .header p {
        font-size: 0.95rem;
    }

    .cards {
        grid-template-columns: 1fr;
        gap: 15px;
        margin: 20px 0;
    }

    .card {
        padding: 20px;
        border-radius: 15px;
    }

    .card:hover {
        transform: translateY(-8px) scale(1.01);
    }

    .icon {
        font-size: 2.2rem;
        margin-bottom: 12px;
    }

    .card h2 {
        font-size: 1.1rem;
        margin-bottom: 8px;
    }

    .card p {
        font-size: 0.9rem;
        margin-bottom: 15px;
    }

    .card button {
        padding: 10px 20px;
        font-size: 14px;
    }

    .footer {
        font-size: 12px;
        margin-top: 20px;
    }
}

/* Celulares pequenos (até 480px) */
@media (max-width: 480px) {
    .container {
        padding: 15px;
    }

    .header h1 {
        font-size: 1.5rem;
        margin-bottom: 5px;
    }

    .header p {
        font-size: 0.85rem;
    }

    .cards {
        gap: 12px;
        margin: 15px 0;
    }

    .card {
        padding: 15px;
        border-radius: 12px;
    }

    .icon {
        font-size: 2rem;
        margin-bottom: 10px;
    }

    .card h2 {
        font-size: 1rem;
        margin-bottom: 6px;
    }

    .card p {
        font-size: 0.8rem;
        margin-bottom: 12px;
    }

    .card button {
        padding: 8px 16px;
        font-size: 13px;
    }

    .footer {
        font-size: 11px;
    }
}