body {
    margin: 0;
    font-family: 'Consolas', monospace;
    background-color: #050a14;
    color: #e0f2ff;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    box-sizing: border-box;
    background-image: url('data:image/svg+xml;utf8,<svg width="100%" height="100%" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 L 0 20" fill="none" stroke="%231b2735" stroke-width="0.5"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)" /></svg>');
}

.container {
    background-color: #0d1624;
    border: 1px solid #1e3a5f;
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 150, 255, 0.2);
    max-width: 500px;
    width: 100%;
}

header h1 {
    color: #00d4ff;
    margin-bottom: 10px;
    font-size: 2.5em;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.6);
}

header p {
    font-size: 1.1em;
    color: #8ab4d9;
    margin-bottom: 30px;
}

main form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

label {
    font-size: 1.2em;
    color: #00d4ff;
    text-align: left;
    display: block;
}

input[type="text"] {
    width: 100%;
    padding: 15px;
    border: 1px solid #1e3a5f;
    border-radius: 5px;
    background-color: #050a14;
    color: #00d4ff;
    font-size: 1.1em;
    box-sizing: border-box;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
}

input[type="text"]::placeholder {
    color: #4a5e7d;
}

input[type="text"]:focus {
    border-color: #00d4ff;
    box-shadow: 0 0 8px rgba(0, 212, 255, 0.4);
}

button[type="submit"] {
    background-color: #00d4ff;
    color: #050a14;
    padding: 15px 25px;
    border: none;
    border-radius: 5px;
    font-size: 1.2em;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
    font-weight: bold;
}

button[type="submit"]:hover {
    background-color: #00b4db;
    transform: translateY(-2px);
}

footer {
    margin-top: 40px;
    font-size: 0.9em;
    color: #4a5e7d;
}

.error-message {
    color: #ff6b6b;
    margin-top: 15px;
    font-weight: bold;
}