body {
    background: #f0f2f5;
    font-family: Arial, sans-serif;
}

.container {
    padding: 0 16px;
}

.banner-card {
    text-align: center;
    margin-bottom: 20px;
}

.banner-img {
    width: 100%;
    max-height: 180px;
    object-fit: cover;
}

.email-input {
    width: 100%;
    padding: 12px;
    margin-bottom: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
}

.login-btn {
    width: 100%;
    padding: 12px;
    background: #4CAF50;
    color: #fff;
    border: none;
    border-radius: 8px;
}

.otp-option {
    padding: 10px;
    /*margin-bottom: 8px;*/
    margin-bottom: 10px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
}

.otp-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.otp-input {
    width: 100%;
    padding: 12px;
    margin-bottom: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
}
.otp-message {
    display: block;
    margin-bottom: 12px;
    color: #d9534f; /* red warning */
    font-size: 14px;
}

.banner-card, .login-card, .otp-card {
    margin-bottom: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    background: #fff;
    padding: 20px;
}

.send-btn {
    flex: 1;
    margin-right: 10px;
    background: #4CAF50;
    color: #fff;
    border: none;
    padding: 12px;
    border-radius: 8px;
}

.back-btn {
    flex: 1;
    background: #ccc;
    border: none;
    padding: 12px;
    border-radius: 8px;
}

.login-card {
    display: flex;
    flex-direction: column;
    align-items: center; /* centers horizontally */
    justify-content: center; /* centers vertically if parent has height */
}