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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 100%;
    overflow: hidden;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px 20px;
    text-align: center;
}

.icon {
    font-size: 60px;
    margin-bottom: 15px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.header h1 {
    font-size: 28px;
    margin-bottom: 10px;
    font-weight: 700;
}

.header h2 {
    font-size: 22px;
    font-weight: 500;
    opacity: 0.95;
}

.content {
    padding: 40px 30px;
}

.instruction {
    text-align: center;
    font-size: 18px;
    color: #333;
    margin-bottom: 30px;
    font-weight: 500;
}

.operators {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.operator-form {
    margin: 0;
    padding: 0;
    width: 100%;
}

.operator-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 25px;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    position: relative;
    overflow: hidden;
    width: 100%;
    font-family: inherit;
    text-align: left;
}

.operator-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: left 0.3s ease;
}

.operator-card:hover::before {
    left: 100%;
}

.operator-card:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.operator-card:active {
    transform: scale(0.98);
}

.mtn {
    background: linear-gradient(135deg, #ffcc00 0%, #ffaa00 100%);
    border-color: #ffaa00;
}

.mtn:hover {
    background: linear-gradient(135deg, #ffaa00 0%, #ff9900 100%);
}

.glo {
    background: linear-gradient(135deg, #00b140 0%, #008f33 100%);
    border-color: #008f33;
}

.glo:hover {
    background: linear-gradient(135deg, #008f33 0%, #007a2b 100%);
}

.airtel {
    background: linear-gradient(135deg, #ff0000 0%, #cc0000 100%);
    border-color: #cc0000;
}

.airtel:hover {
    background: linear-gradient(135deg, #cc0000 0%, #aa0000 100%);
}

.operator-logo {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 10px;
    padding: 5px;
}

.operator-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.operator-text {
    font-size: 20px;
    font-weight: bold;
    color: #333;
}

.operator-name {
    flex: 1;
    margin-left: 20px;
    font-size: 24px;
    font-weight: 700;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.operator-arrow {
    font-size: 30px;
    color: white;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.operator-card:hover .operator-arrow {
    transform: translateX(5px);
}

.footer {
    padding: 20px;
    text-align: center;
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
}

.disclaimer {
    font-size: 12px;
    color: #6c757d;
}

/* Responsive Design */
@media (max-width: 480px) {
    .container {
        border-radius: 15px;
    }

    .header {
        padding: 30px 15px;
    }

    .header h1 {
        font-size: 24px;
    }

    .header h2 {
        font-size: 18px;
    }

    .icon {
        font-size: 50px;
    }

    .content {
        padding: 30px 20px;
    }

    .instruction {
        font-size: 16px;
    }

    .operator-card {
        padding: 15px 20px;
    }

    .operator-name {
        font-size: 20px;
        margin-left: 15px;
    }

    .operator-logo {
        width: 40px;
        height: 40px;
    }

    .operator-arrow {
        font-size: 24px;
    }
}