body {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #ff00cc, #3333ff);
    color: white;
    text-align: center;
}

/* Header */
header {
    padding: 30px;
    font-size: 22px;
    font-weight: bold;
    letter-spacing: 1px;
}

/* Device Info */
.device-info {
    display: flex;
    justify-content: center;
    gap: 15px;
    font-size: 13px;
    margin-bottom: 20px;
}

/* Glass Card */
.card {
    backdrop-filter: blur(15px);
    background: rgba(255, 255, 255, 0.15);
    border-radius: 15px;
    padding: 25px;
    width: 350px;
    margin: 20px auto;
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

.input-group {
    text-align: left;
    margin-bottom: 20px;
}

input {
    width: 100%;
    padding: 12px;
    border-radius: 10px;
    border: none;
    font-size: 14px;
}

/* Buttons */
.btn-group {
    display: flex;
    justify-content: space-between;
}

button {
    padding: 12px 20px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-weight: bold;
    transition: 0.3s;
}

.ban-btn {
    background: #ff4b5c;
    color: white;
}

.unban-btn {
    background: #00c9a7;
    color: white;
}

button:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.hidden {
    display: none;
}

.letter-box {
    background: rgba(0,0,0,0.2);
    padding: 10px;
    border-radius: 10px;
    margin-bottom: 15px;
    font-size: 12px;
}