body {
    background-color: #000;
    color: #0ff;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    text-align: center;
    overflow-x: hidden;
}
canvas#stars {
    position: fixed;
    top: 0;
    left: 0;
    z-index: -1;
}
header {
    padding: 20px;
    border-bottom: 1px solid #0ff;
    background: rgba(0, 0, 0, 0.8);
}
header input, header select {
    margin-top: 10px;
    padding: 8px;
    width: 250px;
    border-radius: 5px;
    border: none;
    outline: none;
    font-size: 16px;
    text-align: center;
    background: rgba(0,255,255,0.1);
    color: #0ff;
    display: block;
    margin-left: auto;
    margin-right: auto;
}
header input:focus, header select:focus {
    box-shadow: 0 0 10px #0ff;
}
.container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 20px;
}
.card {
    background: rgba(0, 255, 255, 0.05);
    border: 1px solid #0ff;
    border-radius: 8px;
    padding: 15px;
    margin: 10px;
    width: 250px;
    transition: transform 0.3s, box-shadow 0.3s;
}
.card:hover {
    transform: scale(1.05);
    box-shadow: 0 0 15px #0ff;
}
.ai-btn {
    background: #0ff;
    color: #000;
    border: none;
    border-radius: 5px;
    padding: 5px 10px;
    cursor: pointer;
    margin-top: 5px;
    font-weight: bold;
}
.ai-btn:hover {
    background: #ff0;
}
a {
    color: #ff0;
    text-decoration: none;
    font-weight: bold;
}
a:hover {
    text-decoration: underline;
}

header {
    background: url('header-bg.png') no-repeat center center/cover;
    color: #fff;
    text-shadow: 0 0 5px #000;
}
header h1, header p {
    background: rgba(0,0,0,0.5);
    display: inline-block;
    padding: 5px 10px;
    border-radius: 5px;
}

header {
    text-align: left;
    padding-left: 40px;
}
header input, header select {
    display: inline-block;
    width: 200px;
    margin: 5px 10px 5px 0;
    background: rgba(0,0,0,0.6);
    color: #0ff;
    border: 1px solid #0ff;
}
header h1, header p {
    background: rgba(0,0,0,0.6);
    color: #fff;
    text-shadow: 0 0 10px #0ff;
}
header select:focus, header input:focus {
    box-shadow: 0 0 10px #ff0;
}