/* Variáveis de Cores (Tema Escuro & Neon Miku) */
:root {
    --miku-cyan: #39C5BB;
    --miku-cyan-glow: rgba(57, 197, 187, 0.6);
    --miku-pink: #ff5ea7;
    --miku-pink-glow: rgba(255, 94, 167, 0.5);
    --dark-bg: #070b12;
    --card-bg: rgba(15, 23, 42, 0.75);
    --text-color: #e2e8f0;
    --text-muted: #94a3b8;
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset Global */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--dark-bg);
    /* Fundo tecnológico animado com gradientes em movimento */
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(57, 197, 187, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(255, 94, 167, 0.1) 0%, transparent 40%);
    background-attachment: fixed;
    color: var(--text-color);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Container padrão */
.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Cabeçalho Animado com Estilo Cyber/Neon */
header {
    background: linear-gradient(135deg, #091322 0%, #0d2137 100%);
    color: #ffffff;
    padding: 90px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom: 2px solid var(--miku-cyan);
    box-shadow: 0 0 30px rgba(57, 197, 187, 0.15);
}

/* Linha de luz brilhante animada no topo */
header::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--miku-cyan), var(--miku-pink), transparent);
    animation: lightBeam 4s infinite linear;
}

@keyframes lightBeam {
    0% { left: -100%; }
    100% { left: 100%; }
}

header h1 {
    font-size: 3.8rem;
    margin-bottom: 15px;
    letter-spacing: 4px;
    font-weight: 700;
    color: #fff;
    /* Efeito de brilho de néon no título */
    text-shadow: 0 0 10px var(--miku-cyan-glow), 0 0 20px var(--miku-cyan-glow), 0 0 40px var(--miku-cyan-glow);
    animation: titlePulse 3s infinite alternate;
}

@keyframes titlePulse {
    0% { text-shadow: 0 0 10px var(--miku-cyan-glow), 0 0 20px var(--miku-cyan-glow); }
    100% { text-shadow: 0 0 15px var(--miku-cyan-glow), 0 0 30px var(--miku-cyan-glow), 0 0 50px var(--miku-cyan); }
}

header p {
    font-size: 1.3rem;
    font-weight: 300;
    color: var(--miku-cyan);
    letter-spacing: 1px;
}

/* Seção Hero / Apresentação */
.hero {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin: 80px 0;
    align-items: center;
}

.hero-text {
    flex: 1;
    min-width: 300px;
}

.hero-text h2 {
    color: var(--miku-cyan);
    margin-bottom: 20px;
    font-size: 2.4rem;
    font-weight: 600;
    position: relative;
    text-shadow: 0 0 8px rgba(57, 197, 187, 0.3);
}

.hero-text h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--miku-pink);
    margin-top: 8px;
    border-radius: 2px;
    box-shadow: 0 0 10px var(--miku-pink-glow);
}

.hero-text p {
    margin-bottom: 18px;
    color: var(--text-muted);
    font-size: 1.05rem;
}

.hero-text strong {
    color: var(--miku-cyan);
}

/* Card de Ficha Técnica (Glassmorphism Escuro) */
.hero-card {
    flex: 1;
    min-width: 280px;
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 35px;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(57, 197, 187, 0.3);
    position: relative;
    transition: var(--transition);
    animation: floatCard 6s ease-in-out infinite;
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.hero-card:hover {
    border-color: var(--miku-cyan);
    box-shadow: 0 20px 45px var(--miku-cyan-glow);
}

.hero-card h3 {
    margin-bottom: 20px;
    color: var(--miku-cyan);
    font-size: 1.4rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 10px;
}

.hero-card ul {
    list-style: none;
}

.hero-card ul li {
    padding: 10px 0;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
    font-size: 0.95rem;
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
}

.hero-card ul li strong {
    color: var(--text-color);
}

.hero-card ul li:last-child {
    border-bottom: none;
}

/* Seção de Recursos / Cards Grid Animados */
.features {
    margin: 80px 0;
    text-align: center;
}

.features h2 {
    font-size: 2.6rem;
    color: #fff;
    margin-bottom: 50px;
    font-weight: 700;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
    gap: 30px;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: var(--transition);
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

/* Borda superior que brilha ao passar o mouse */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--miku-cyan);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px var(--miku-cyan-glow);
    border-color: var(--miku-cyan);
}

.card:hover::before {
    height: 6px;
    background: var(--miku-pink);
    box-shadow: 0 0 15px var(--miku-pink-glow);
}

.card h3 {
    color: var(--miku-cyan);
    margin-bottom: 15px;
    font-size: 1.3rem;
    transition: var(--transition);
}

.card:hover h3 {
    color: var(--miku-pink);
    text-shadow: 0 0 8px var(--miku-pink-glow);
}

.card p {
    color: var(--text-muted);
    font-size: 0.98rem;
}

/* Rodapé */
footer {
    background-color: #04070c;
    color: var(--text-muted);
    text-align: center;
    padding: 40px 0;
    font-size: 0.95rem;
    margin-top: auto;
    border-top: 1px solid rgba(57, 197, 187, 0.15);
}

footer p {
    opacity: 0.9;
    letter-spacing: 0.5px;
}