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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #121212;
    color: #e0e0e0;
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

a { text-decoration: none; color: inherit; }

/* Header */
header {
    background-color: #1e1e1e;
    padding: 1rem 0;
    border-bottom: 1px solid #333;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #00e676; /* Verde Crypto */
}

nav ul { list-style: none; display: flex; gap: 20px; }
nav a:hover { color: #00e676; }

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://source.unsplash.com/random/1600x900/?server,technology');
    background-size: cover;
    background-position: center;
    height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero h1 { font-size: 3rem; margin-bottom: 1rem; color: #fff; }
.btn {
    background-color: #00e676;
    color: #000;
    padding: 10px 25px;
    border-radius: 5px;
    font-weight: bold;
    transition: 0.3s;
    display: inline-block;
    margin-top: 20px;
}
.btn:hover { background-color: #00c853; }

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background-color: #1e1e1e;
    border-radius: 8px;
    overflow: hidden;
}

th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #333;
}

th { background-color: #2c2c2c; color: #00e676; }
tr:hover { background-color: #252525; }

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
    text-align: center;
}

.feature-box {
    background: #1e1e1e;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #333;
}

.feature-box i {
    font-size: 2rem;
    color: #00e676;
    margin-bottom: 10px;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    background-color: #000;
    margin-top: 50px;
    font-size: 0.9rem;
    color: #888;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    header .container { flex-direction: column; gap: 10px; }
    .table-responsive { overflow-x: auto; }
}