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

body {
    font-family: 'Roboto', sans-serif;
    background-color: #000;
    color: #fff;
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Header */
header {
    padding: 20px 0;
    border-bottom: 1px solid #333;
    position: fixed;
    width: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    top: 0;
}

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

.logo img { height: 50px; }
.logo span { font-weight: 900; font-size: 24px; color: #FFD700; letter-spacing: 1px; }

.btn-login {
    text-decoration: none;
    color: #FFD700;
    border: 1px solid #FFD700;
    padding: 8px 20px;
    border-radius: 4px;
    font-weight: bold;
    transition: 0.3s;
}

.btn-login:hover { background: #FFD700; color: #000; }

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1550751827-4bd374c3f58b?auto=format&fit=crop&w=1920&q=80'); /* Imagem de fundo genérica de tecnologia */
    background-size: cover;
    background-position: center;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 20px;
    color: #fff;
    text-transform: uppercase;
}

.hero p {
    font-size: 1.2rem;
    color: #ccc;
    max-width: 700px;
    margin: 0 auto 40px auto;
}

.btn-cta {
    background-color: #FFD700;
    color: #000;
    padding: 15px 40px;
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: bold;
    border-radius: 5px;
    transition: transform 0.2s;
    display: inline-block;
}

.btn-cta:hover {
    transform: scale(1.05);
    background-color: #e6c200;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.4);
}

/* Features */
.features {
    padding: 80px 0;
    background-color: #111;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #FFD700;
    margin-bottom: 50px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: #1a1a1a;
    padding: 30px;
    border-radius: 10px;
    border: 1px solid #333;
    text-align: center;
    transition: 0.3s;
}

.card:hover { border-color: #FFD700; transform: translateY(-5px); }

.icon { font-size: 3rem; margin-bottom: 20px; }

.card h3 { margin-bottom: 15px; color: #fff; }
.card p { color: #aaa; font-size: 0.95rem; }

/* Footer */
footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid #333;
    color: #666;
}

footer strong { color: #FFD700; }
.contact { margin-top: 10px; font-size: 0.9rem; }

/* Mobile */
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1rem; }
}