:root {
    --dark-blue: #071E57;
    --light-blue: #35B7DE;
    --white: #ffffff;
}

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

body {
    background-color: var(--dark-blue);
    color: var(--white);
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Fundo Animado e Partículas */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: radial-gradient(circle at top right, #0d2c7a 0%, var(--dark-blue) 70%);
    z-index: -1;
}

.bg-animation::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"><circle cx="100" cy="100" r="1" fill="%2335B7DE" opacity="0.15"/></svg>') repeat;
    animation: rotateBg 150s linear infinite;
}

@keyframes rotateBg {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* Header */
header {
    padding: 30px 0;
    border-bottom: 1px solid rgba(53, 183, 222, 0.15);
    background: rgba(7, 30, 87, 0.6);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -1px;
}

.logo .nva { color: var(--white); }
.logo .fibra { color: var(--light-blue); font-weight: 600; margin-left: 5px; }

.btn-client {
    text-decoration: none;
    color: var(--dark-blue);
    background-color: var(--light-blue);
    padding: 10px 24px;
    border-radius: 30px;
    font-weight: 700;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(53, 183, 222, 0.2);
}

.btn-client:hover {
    background-color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(53, 183, 222, 0.4);
}

/* Hero Section */
main {
    flex: 1;
}

.hero {
    text-align: center;
    padding: 80px 0 50px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
}

/* A cor original ficava no span global, removi para focar no destaque-3d abaixo para evitar conflito */
/* .hero h1 span { color: var(--light-blue); } */

.hero p {
    font-size: 1.2rem;
    color: #b0c4de;
    max-width: 600px;
    margin: 0 auto;
    font-weight: 400;
}

/* Cards de Serviços */
.services {
    padding-bottom: 80px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
    justify-content: center;
}

.card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(53, 183, 222, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 40px 25px;
    text-align: center;
    text-decoration: none;
    color: var(--white);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(53, 183, 222, 0.15) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--light-blue);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3), 0 0 20px rgba(53, 183, 222, 0.2);
}

.card:hover::before {
    opacity: 1;
}

.card-icon {
    font-size: 2.8rem;
    color: var(--light-blue);
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.card:hover .card-icon {
    transform: scale(1.15) rotate(5deg);
}

.card h2 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.card p {
    font-size: 0.9rem;
    color: #a3b8cc;
    line-height: 1.5;
}

/* Footer */
footer {
    text-align: center;
    padding: 25px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: #6b88a8;
    font-size: 0.85rem;
    background: rgba(0, 0, 0, 0.2);
}

/* Animações Iniciais */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }
.delay-6 { transition-delay: 0.6s; }

/* Responsividade */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.2rem; }
    header .container { flex-direction: column; gap: 15px; }
    .grid { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
}

/* ------------------------------------- */
/* ANIMAÇÕES 3D (ADICIONADAS AQUI)       */
/* ------------------------------------- */

/* Cria o ambiente de perspectiva para o 3D funcionar no container */
.container-3d {
    perspective: 1000px;
    transform-style: preserve-3d;
}

/* Aplica a animação de flutuação nos textos */
.texto-3d {
    display: inline-block;
    animation: flutuar3D 4s ease-in-out infinite alternate;
}

/* Efeito de profundidade pesada (texto saltando) para a marca */
.destaque-3d {
    display: inline-block;
    color: var(--light-blue); /* Usa a cor padrão do site */
    transform: translateZ(30px); /* Joga o texto para "frente" da tela */
    text-shadow:
        1px 1px 0px #2284a1, /* Sombra um pouco mais escura que o --light-blue para o bloco 3D */
        2px 2px 0px #2284a1,
        3px 3px 0px #2284a1,
        4px 4px 0px #2284a1,
        5px 5px 15px rgba(0, 0, 0, 0.5); /* Sombra difusa projetada no fundo */
}

/* A animação que faz o texto girar levemente nos eixos X e Y */
@keyframes flutuar3D {
    0% {
        transform: rotateX(5deg) rotateY(-5deg) translateZ(0px);
    }
    100% {
        transform: rotateX(-5deg) rotateY(5deg) translateZ(15px);
    }
}