@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;600;700;900&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
}

body {
    min-height: 100vh;
    background: url("imagens/sentryx2.jpeg") no-repeat center center;
    background-size: cover;
    background-attachment: fixed;
    color: white;
    overflow-x: hidden;
}

.topo {
    width: 100%;
    position: relative;
    padding: 60px 20px 70px;
    text-align: center;
}

.logo {
    position: absolute;
    top: 25px;
    left: 20px;
    width: 265px;
    height: 70px;
    object-fit: cover;
    border-radius: 8px;
    opacity: 0.65;
    filter: drop-shadow(0 0 14px #00eaff);
    animation: glowLogo 4s infinite ease-in-out;
}

.titulo-principal {
    font-size: 48px;
    font-weight: 900;
    line-height: 1.2;
    text-shadow: 0 0 20px #00eaff;
}

.titulo-principal span {
    color: #6fffd9;
    text-shadow: 0 0 20px #6fffd9;
}

.planos-container {
    width: 100%;
    max-width: 1800px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: stretch;
    gap: 35px;
    padding: 40px 20px 80px;
}

.plano {
    width: 330px;
    min-height: 640px;
    background: rgba(0,0,0,0.75);
    border-radius: 20px;
    padding: 25px 0 35px;
    box-shadow: 0 0 25px rgba(0,0,0,0.8);
    backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
}

.plano-header {
    text-align: center;
    padding: 14px;
    font-size: 24px;
    font-weight: 800;
    border-radius: 20px 20px 0 0;
    letter-spacing: 1px;
}

.basic .plano-header { background: #01ff3f; }
.inter .plano-header { background: #8b00ff; }
.prof .plano-header { background: #004cff; }
.premium .plano-header { background: #ff0000; }

.plano-img {
    display: flex;
    justify-content: center;
    margin-top: 22px;
}

.plano-img img {
    width: 165px;
    height: 165px;
    border-radius: 50%;
    object-fit: cover;
    animation: glowPulse 3.5s infinite ease-in-out;
}

.basic .plano-img img { box-shadow: 0 0 35px #01ff3f; }
.inter .plano-img img { box-shadow: 0 0 35px #8b00ff; }
.prof .plano-img img { box-shadow: 0 0 35px #004cff; }
.premium .plano-img img { box-shadow: 0 0 35px #ff0000; }

.preco {
    margin-top: 20px;
    text-align: center;
    font-size: 30px;
    font-weight: 900;
}

ul {
    margin-top: 20px;
    padding: 0 25px;
    flex-grow: 1;
}

ul li {
    margin: 8px 0;
    font-size: 15px;
    line-height: 1.4;
}

button {
    width: 85%;
    margin: 25px auto 0;
    padding: 15px 0;
    border-radius: 12px;
    border: none;
    font-size: 15px;
    font-weight: 900;
    color: white;
    letter-spacing: 1px;
    cursor: pointer;
    transition: 0.3s;
}

.btn-basic { background: #01ff3f; box-shadow: 0 0 20px #01ff3f; }
.btn-inter { background: #8b00ff; box-shadow: 0 0 20px #8b00ff; }
.btn-prof { background: #004cff; box-shadow: 0 0 20px #004cff; }
.btn-premium { background: #ff0000; box-shadow: 0 0 20px #ff0000; }

button:hover {
    transform: scale(1.07);
    box-shadow: 0 0 40px white;
}

.copy {
    width: 100%;
    text-align: center;
    padding: 25px 0;
    font-size: 14px;
    color: #6fffd9;
    text-shadow: 0 0 12px #00eaff;
    margin-top: 40px;
}

@media (max-width: 1024px) {
    .planos-container {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .logo {
        position: relative;
        left: 0;
        top: 0;
        margin: 0 auto 20px;
        display: block;
    }

    .titulo-principal {
        font-size: 34px;
    }

    .planos-container {
        flex-direction: column;
        align-items: center;
    }

    .plano {
        width: 95%;
        max-width: 360px;
    }
}

@keyframes glowPulse {
    0% { filter: brightness(0.8); }
    50% { filter: brightness(1.25); }
    100% { filter: brightness(0.8); }
}

@keyframes glowLogo {
    0% { filter: drop-shadow(0 0 8px #00eaff); opacity: .55; }
    50% { filter: drop-shadow(0 0 22px #00eaff); opacity: .85; }
    100% { filter: drop-shadow(0 0 8px #00eaff); opacity: .55; }
}